19-1380; Rev 3; 10/02 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps ____________________________Features 6-Bump UCSP Package (MAX4323) With their rail-to-rail input common-mode range and output swing, these amplifiers are ideal for low-voltage, single-supply operation. In addition, low offset voltage and high speed make them the ideal signal-conditioning stages for precision, low-voltage data-acquisition systems. The MAX4323 is offered in a small 6-bump chip-scale package (UCSPTM). The MAX4322/MAX4323 are also available in space-saving SOT23 packages. Drive 250 Loads 2.4V to 6.5V Single-Supply Operation Rail-to-Rail Input Common-Mode Voltage Range Rail-to-Rail Output Voltage Swing 5MHz Gain-Bandwidth Product 650A Quiescent Current per Amplifier 700V Offset Voltage No Phase Reversal for Overdriven Inputs 25A Shutdown Mode (MAX4323/MAX4327) Unity-Gain Stable for Capacitive Loads Up to 500pF Ordering Information TEMP RANGE PART Selector Guide PART BW (MHz) NO. OF AMPS PIN/BUMPPACKAGE MAX4322 5 1 5 SOT23, 8 MAX/SO MAX4323 5 1 6 SOT23/UCSP, 8 MAX/SO MAX4326 5 2 8 MAX/SO MAX4327 5 2 10 MAX, 14 SO MAX4329 5 4 14 SO SHUTDOWN MAX4322EUK-T -40oC to +85oC o o PIN/BUMPPACKAGE TOP MARK 5 SOT23-5 ACGE MAX4322EUA -40 C to +85 C 8 MAX -- MAX4322ESA -40oC to +85oC 8 SO -- Ordering Information continued at end of data sheet. -- Pin Configurations Yes -- TOP VIEW (BUMPS ON BOTTOM) Yes -- 1 B A IN+ VEE ________________________Applications Battery-Powered Instruments RSSI Systems Data-Acquisition Systems Signal Conditioning PA Biasing Low-Power, Low-Voltage Applications Portable Equipment Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. UCSP is a trademark of Maxim Integrated Products, Inc. MAX4323 2 IN- OUT 3 SHDN VCC UCSP Pin Configurations continued at end of data sheet. ________________________________________________________________ Maxim Integrated Products For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at 1-888-629-4642, or visit Maxim's website at www.maxim-ic.com. 1 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 General Description The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 family of operational amplifiers combines wide bandwidth and excellent DC accuracy with Rail-to-Rail(R) operation at the inputs and outputs. These devices consume only 650A per amplifier and operate from either a single supply (2.4V to 6.5V) or dual supplies (1.2V to 3.25V). These unity-gain-stable amplifiers are capable of driving 250 loads and have a 5MHz gain-bandwidth product. The MAX4323 and MAX4327 feature a low-power shutdown mode that reduces supply current to 25A and places the outputs in a high-impedance state. MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC - VEE) ...................................................7.5V All Other Pins ...................................(VCC + 0.3V) to (VEE - 0.3V) Output Short-Circuit Duration.....................................Continuous (Short to Either Supply) Continuous Power Dissipation (TA = +70C) 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW 6-Bump UCSP (derate 3.9mW/C above +70C).........308mW 6-Pin SOT23 (derate 7.1mW/C Above + 70C) ..........571mW 8-Pin SO (derate 5.88mW/C above +70C)................471mW 8-Pin MAX (derate 4.10mW/C above +70C) ...........330mW 10-Pin MAX (derate 5.6mW/C above +70C) ...........444mW 14-Pin SO (derate 8.00mW/C above +70C)..............640mW Operating Temperature Range MAX432_E__ ...................................................-40C to +85C Maximum Junction Temperature .....................................+150C Storage Temperature Range .............................-65C to +160C Bump Reflow Temperature ..............................................+235C Lead Temperature (soldering, 10s) .................................+300C Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. DC ELECTRICAL CHARACTERISTICS--TA = +25C (VCC = 5.0V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.) PARAMETER Input Offset Voltage SYMBOL CONDITIONS MIN TYP MAX MAX432_ESA/ MAX4327ESD 0.7 2.0 All other packages UNITS mV VOS VCM = VEE or VCC 1.2 2.50 IB VCM = VEE or VCC 50 150 nA Input Offset Current IOS VCM = VEE or VCC 1 12 nA Differential Input Resistance RIN -1.5V < VDIFF < +1.5V 500 Input Bias Current Common-Mode Input Voltage Range Common-Mode Rejection Ratio CMVR CMRR Inferred from CMRR test VEE VCM VCC VCC VEE MAX432_ESA/ MAX4327ESD 62 k V 94 dB All other packages 60 91 66 Power-Supply Rejection Ratio PSRR VCC = 2.4V to 6.5V 100 dB Output Resistance ROUT AV = +1V/V 0.1 VOUT = 0.25V to 4.75V, RL = 100k 106 Large-Signal Voltage Gain AV VOUT = 0.4V to 4.6V, RL = 250 MAX4322/ MAX4323 RL = 100k RL = 250 Output Voltage Swing VO MAX4326/ MAX4327/ MAX4329 Output Short-Circuit Current SHDN Logic Threshold SHDN Input Current 2 RL = 100k RL = 250 70 VCC - VOH 12 VOL - VEE 20 VCC - VOH 200 300 VOL - VEE 100 200 VCC - VOH 15 VOL - VEE 25 VCC - VOH 220 350 VOL - VEE 120 250 ISC VIL VIH dB 86 50 MAX4323/MAX4327 MAX4323/MAX4327 Low High mA 0.8 2.0 1 _______________________________________________________________________________________ mV 4 V A Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps (VCC = 5V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.) PARAMETER SYMBOL Operating Supply Voltage Range VCC Inferred from PSRR test Supply Current per Amplifier ICC VCM = VOUT = VCC/2 I SHDN V SHDN 0.8V, MAX4323/MAX4327 Shutdown Supply Current per Amplifier CONDITIONS MIN TYP 2.4 VCC = 2.4V 650 VCC = 5V 725 VCC = 2.4V 25 VCC = 5V 40 MAX UNITS 6.5 V 1100 60 A A DC ELECTRICAL CHARACTERISTICS--TA = -40C to +85C (VCC = 5V, VEE = 0V, VCM = 0V, VOUT = VCC/2, SHDN = VCC, RL connected to VCC/2, unless otherwise noted.) (Note 1) PARAMETER Input Offset Voltage SYMBOL VOS CONDITIONS VCM = VEE or VCC MIN TYP MAX432_ESA/ MAX4327ESD 3.0 All other packages Input Offset Voltage Tempco Input Bias Current Input Offset Current 2 180 nA IOS VCM = VEE or VCC 20 nA VCC V Common-Mode Rejection Ratio CMRR VEE VCM VCC SHDN Logic Threshold PSRR AV VO VIL VIH SHDN Input Current VEE MAX432_ESA/ MAX4327ESD 59 All other packages 54 Operating Supply Voltage Range VCC Supply Current per Amplifier ICC I SHDN dB VCC = 2.4V to 6.5V 62 dB VOUT = 0.4V to 4.6V, RL = 250 66 dB MAX4322/ MAX4323 RL = 250 MAX4326/ MAX4327/ MAX4329 RL = 250 MAX4323/MAX4327 VCC - VOH 350 VOL - VEE 250 VCC - VOH 400 VOL - VEE 300 Low High 0.8 2.0 MAX4323/MAX4327 Shutdown Supply Current per Amplifier V/C VCM = VEE or VCC Inferred from CMRR test Output Voltage Swing mV IB CMVR Large-Signal Voltage Gain UNITS 6.0 TCVOS Common-Mode Input Voltage Range Power-Supply Rejection Ratio MAX 5 2.4 VCM = VOUT = VCC/2 V SHDN 0.8V, MAX4323/MAX4327 mV V A 6.5 V 1200 A 70 A _______________________________________________________________________________________ 3 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 DC ELECTRICAL CHARACTERISTICS--TA = +25C (continued) MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps AC ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = 0V, VCM = VOUT = VCC/2, SHDN = VCC, TA = +25C, unless otherwise noted.) PARAMETER Gain-Bandwidth Product SYMBOL CONDITIONS MIN TYP MAX UNITS GBWP 5 MHz Phase Margin M 64 Degrees Gain Margin GM 12 dB Total Harmonic Distortion THD Slew Rate SR Settling Time to 0.01% tS Turn-On Time tON SHDN Delay f = 10kHz, VOUT = 2VP-P, AV = +1V/V AV = +1V/V, VOUT = 2V step VCC = 0 to 3V step MAX4323/MAX4327 0.003 % 2 V/s 2.0 s 1 s Enable 1 Disable 0.2 s Input Capacitance CIN 3 pF Input Noise-Voltage Density en f = 1kHz 22 nV/Hz Input Noise-Current Density in f = 1kHz 0.4 pA/Hz 135 dB CL AV = +1V/V 250 pF Amp-Amp Isolation Capacitive-Load Stability Note 1: All devices are 100% tested at TA = +25C. All temperature limits are guaranteed by design. 4 _______________________________________________________________________________________ Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps GAIN AND PHASE vs. FREQUENCY (WITH CLOAD) 60 180 144 144 72 20 36 0 -36 PHASE GAIN 72 20 36 0 0 -36 PHASE -40 100 1k AV = +1000 RL = CL = 500pF -20 -108 AV = +1000 NO LOAD -144 10k 100k 1M -40 100 -180 100M 10M 1k MAX4326/MAX4327/MAX4329 CHANNEL SEPARATION vs. FREQUENCY 100k 1M 10M -100 -180 100M 10 100 1k 100 AV = +1 OUTPUT IMPEDANCE () 110 100 90 80 70 100k 1M 10M 100M MAX4323/MAX4327 SHUTDOWN SUPPLY CURRENT vs. TEMPERATURE MAX4322/26/29-05 120 10k FREQUENCY (Hz) OUTPUT IMPEDANCE vs. FREQUENCY MAX4322/26/29-04 130 10 1 0.1 60 60 50 VCC = 6.5V 40 30 VCC = 2.7V 20 10 VSHDN = 0V 50 0 0.01 10k 100k FREQUENCY (Hz) 1M 10M 100 1k 10k 100k SUPPLY CURRENT PER AMPLIFIER vs. TEMPERATURE 850 800 700 VCC = 2.7V 650 600 0.75 0 -0.75 -1.50 550 -2.25 500 -3.00 35 50 TEMPERATURE (C) 65 80 95 20 35 50 65 80 95 INPUT BIAS CURRENT vs. COMMON-MODE VOLTAGE SOT23-5/6 PACKAGE 2.25 5 TEMPERATURE (C) 3.00 VOLTAGE (mV) 750 20 -40 -25 -10 100M 1.50 VCC = 6.5V 5 10M INPUT OFFSET VOLTAGE vs. TEMPERATURE MAX4322/26/29-07 900 -40 -25 -10 1M FREQUENCY (Hz) SO PACKAGE 50 40 INPUT BIAS CURRENT (nA) 1k MAX4322/26/29-08 100 MAX4322/26/29-09 CHANNEL SEPARATION (dB) -144 FREQUENCY (Hz) FREQUENCY (Hz) SUPPLY CURRENT (A) -60 -80 -108 10k -40 -72 -72 -20 -20 SHUTDOWN SUPPLY CURRENT (A) 0 GAIN (dB) GAIN (dB) GAIN PHASE (DEGREES) 108 40 AV = +1 0 108 40 MAX4323-06 180 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY PSRR (dB) 60 MAX4322/26/29-02 PHASE (DEGREES) MAX4322/26/29-01 MAX4322/26/29-03 GAIN AND PHASE vs. FREQUENCY VCC = 2.7V 30 VCC = 6.5V 20 10 0 -10 -20 -30 -40 -50 -40 -25 -10 5 20 35 50 TEMPERATURE (C) 65 80 95 0 1 2 3 4 5 6 COMMON-MODE VOLTAGE (V) _______________________________________________________________________________________ 5 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 __________________________________________Typical Operating Characteristics (VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25C, unless otherwise noted.) _____________________________Typical Operating Characteristics (continued) (VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25C, unless otherwise noted.) COMMON-MODE REJECTION RATIO vs. TEMPERATURE VCC = 2.7V, VCM = VCC 110 10 0 -10 -20 VCM = 0 TO 5.0V 105 100 95 VCC = 2.7V, VCM = VEE -30 250 RL TO VCC 200 VCM = -0.2V TO 5.2V 80 5 20 35 50 65 80 95 VCC = 2.7V, RL = 100k 0 -40 -25 -10 5 20 35 50 65 80 95 -40 -25 -10 5 20 35 50 65 TEMPERATURE (C) TEMPERATURE (C) TEMPERATURE (C) MAXIMUM OUTPUT VOLTAGE vs. TEMPERATURE LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE VCC = 6.5V, RL = 500 VCC = 2.7V RL TO VEE 110 RL = 100k 100 GAIN (dB) 200 VCC = 2.7V, RL = 500 100 RL = 2k RL = 500 80 95 VCC = 6.5V RL TO VEE 110 RL = 100k 100 RL = 10k 90 120 GAIN (dB) 250 120 MAX4322/26/29-14 RL TO VEE MAX4322/26/29-13 300 VCC - VOUT (mV) VCC = 6.5V, RL = 100k 50 -40 -25 -10 50 VCC = 2.7V, RL = 500 100 85 VCC = 6.5V, VCM = VEE -60 150 150 90 -40 -50 VCC = 6.5V, RL = 500 RL = 10k RL = 2k 90 80 80 70 70 MAX4322/26/29-15 20 115 VOUT - VEE (mV) 30 120 MAX4322/26/29-11 VCC = 6.5V, VCM = VCC CMRR (dB) INPUT BIAS CURRENT (nA) 40 MAX4322/26/29-10 50 MINIMUM OUTPUT VOLTAGE vs. TEMPERATURE MAX4322/26/29-12 INPUT BIAS CURRENT vs. TEMPERATURE RL = 500 VCC = 6.5V, RL = 100k (TOP) VCC = 2.7V, RL = 100k (BOTTOM) -40 -25 -10 35 50 65 80 100 200 300 400 500 600 0 100 200 300 400 500 TEMPERATURE (C) OUTPUT VOLTAGE: FROM VCC (mV) OUTPUT VOLTAGE: FROM VCC (mV) LARGE-SIGNAL GAIN vs. TEMPERATURE LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE LARGE-SIGNAL GAIN vs. OUTPUT VOLTAGE VCC = 2.7V, RL TO VEE 110 105 VCC = 6.5V, RL TO VCC 90 RL = 100k VCC = 2.7V RL TO VCC 110 VCC = 6.5V RL TO VCC 110 RL = 100k RL = 10k RL = 10k RL = 2k 90 RL = 500 600 RL = 2k 100 80 85 90 RL = 500 80 70 70 80 120 100 100 95 120 GAIN (dB) VCC = 6.5V, RL TO VEE MAX4322/26/29-17 RL = 500 VOUT(P-P) = VCC - 1V 115 VCC = 2.7V, RL TO VCC 60 60 75 -40 -25 -10 5 20 35 50 TEMPERATURE (C) 6 60 0 95 GAIN (dB) 120 20 MAX4322/26/29-16 125 5 MAX4322/26/29-18 60 0 GAIN (dB) MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps 65 80 95 0 100 200 300 400 500 OUTPUT VOLTAGE: FROM VEE (mV) 600 0 100 200 300 400 500 OUTPUT VOLTAGE: FROM VEE (mV) _______________________________________________________________________________________ 600 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps (VCC = 5V, VEE = 0V, VCM = VCC/2, SHDN = VCC, TA = +25C, unless otherwise noted.) VCC = 2.7V, RL TO VEE 95 VCC = 2.7V, RL TO VCC 90 85 VOUT(P-P) = VCC - 600mV RL = 100k 80 -40 -25 -10 5 20 35 50 65 80 1.4 5 20 35 50 65 80 SMALL-SIGNAL TRANSIENT RESPONSE (NONINVERTING) MAX4322/26/29-22 TOTAL HARMONIC DISTORTION PLUS NOISE vs. PEAK-TO-PEAK SIGNAL AMPLITUDE 95 10 VOLTAGE (50mV/div) IN 4.2 4.4 4.6 4.8 100k IN OUT RL = 100k 0.001 200ns/div 5.0 200ns/div PEAK-TO-PEAK SIGNAL AMPLITUDE (V) LARGE-SIGNAL TRANSIENT RESPONSE (INVERTING) LARGE-SIGNAL TRANSIENT RESPONSE (NONINVERTING) MAX4322/26/29-25 AV = +1 AV = -1 IN IN VOLTAGE (2V/div) 4.0 1k 10k FREQUENCY (Hz) AV = -1 OUT RL = 10k 100 SMALL-SIGNAL TRANSIENT RESPONSE (INVERTING) AV = +1 VOLTAGE (50mV/div) RL = 2k RL = 250 0.015 0 -40 -25 -10 TEMPERATURE (C) 0.01 0.020 0.005 TEMPERATURE (C) AV = +1 10kHz SINE WAVE RL TO VCC/2 500kHz LOWPASS FILTER 0.025 0.010 1.3 95 VOLTAGE (2V/div) THD + N (%) 1.5 1.2 75 0.1 1.6 MAX4322/26/29-26 100 0.030 1.7 MAX4322/26/29-24 105 AV = +1 2VP-P SIGNAL 500kHz LOWPASS FILTER RL = 10k TO VCC/2 0.035 MAX4322/26/29-23 GAIN (dB) 110 1.8 0.040 THD + N (%) VCC = 6.5V, RL TO VCC 115 1.9 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY MAX4322/26/29-20 VCC = 6.5V, RL TO VEE 120 MINIMUM OPERATING VOLTAGE (V) MAX4322/26/29-19 125 MINIMUM OPERATING VOLTAGE vs. TEMPERATURE MAX4322/26/29-21 LARGE-SIGNAL GAIN vs. TEMPERATURE OUT OUT 2s/div 2s/div _______________________________________________________________________________________ 7 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 _____________________________Typical Operating Characteristics (continued) Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Pin Description PIN MAX4322 MAX4323 SOT23 SO/MAX 8 SOT23 SO/MAX NAME MAX4327 MAX4326 UCSP FUNCTION MAX4329 MAX SO 1 6 1 6 A2 -- -- -- -- OUT Output 2 4 2 4 A1 4 4 4 11 VEE Negative Supply. Ground for singlesupply operation. 3 -- 3 3 B1 -- -- -- -- IN+ Noninverting Input 4 -- 4 2 B2 -- -- -- -- IN- Inverting Input 5 7 6 7 A3 8 10 14 4 VCC Positive Supply -- 1, 5, 8 -- 1, 5 -- -- -- 5, 7, 8 , 10 -- N.C. No Connection. Not internally connected. -- -- SHDN Shutdown Control. Connected high or leave floating to enable amplifier. 1, 9 1, 13 1, 7 OUT1, OUT2 Outputs for Amps 1 and 2 2, 6 2, 8 2, 12 2, 6 IN1-, IN2- Inverting Inputs for Amps 1 and 2 3, 5 3, 7 3, 11 3, 5 IN1+, IN2+ Noninverting Inputs for Amps 1 and 2 -- -- 5 8 B3 -- -- -- -- -- -- 1, 7 -- 2 -- -- -- -- 3 -- -- -- Shutdown Control for Amps 1 and 2. Connected high or leave floating to enable amplifier. -- -- -- -- -- -- 5, 6 5, 9 -- SHDN1, SHDN2 -- -- -- -- -- -- -- -- 8, 14 OUT3, OUT4 Outputs for Amps 3 and 4 -- -- -- -- -- -- -- -- 9, 13 IN3-, IN4- Inverting Inputs for Amps 3 and 4 -- -- -- -- -- -- -- -- 10, 12 IN3+, IN4+ Noninverting Inputs for Amps 3 and 4 _______________________________________________________________________________________ Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps Rail-to-Rail Input Stage Devices in the MAX4322/MAX4323/MAX4326/MAX4327/ MAX4329 family of high-speed amplifiers have rail-torail input and output stages designed for low-voltage, single-supply operation. The input stage consists of separate NPN and PNP differential stages, which combine to provide an input common-mode range extending to the supply rails. The PNP stage is active for input voltages close to the negative rail, and the NPN stage is active for input voltages near the positive rail. The input offset voltage is typically below 250V. The switchover transition region, which occurs near VCC/2, has been extended to minimize the slight degradation in CMRR caused by the mismatch of the input pairs. Their low offset voltage, high bandwidth, and rail-to-rail common-mode range make these op amps excellent choices for precision, low-voltage, data-acquisition systems. Since the input stage switches between the NPN and PNP pairs, the input bias current changes polarity as the input voltage passes through the transition region. To reduce the offset error caused by input bias currents flowing through external source impedances, match the effective impedance seen by each input (Figures 1a, 1b). High-source impedances, together with the input capacitance, can create a parasitic pole that produces an underdamped signal response. Reducing the input impedance or placing a small (2pF to 10pF) capacitor across the feedback resistor improves the response. The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329s' inputs are protected from large differential input voltages by 1k series resistors and back-to-back triple diodes across the inputs (Figure 2). For differential input voltages less than 1.8V, the input resistance is typically 500k. For differential input voltages greater than 1.8V, the input resistance is approximately 2k, and the input bias current is determined by the following equation: R3 R3 MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 R1 R3 = R1 R2 R2 R1 R3 = R1 Figure 1a. Reducing Offset Error Due to Bias Current (Noninverting) R2 R2 Figure 1b. Reducing Offset Error Due to Bias Current (Inverting) 1k 1k Figure 2. Input Protection Circuit _______________________________________________________________________________________ 9 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 __________ Applications Information IBIAS = VDIFF - 1.8V 2k Rail-to-Rail Output Stage The minimum output voltage is within millivolts of ground for single-supply operation where the load is referenced to ground (VEE). Figure 3 shows the input voltage range and output voltage swing of a MAX4322 connected as a voltage follower. With a 3V supply and the load tied to ground, the output swings from 0 to 2.90V. The maximum output voltage swing depends on the load, but is within 350mV of a 5V supply, even with the maximum load (500 to ground). Driving a capacitive load can cause instability in most high-speed op amps, especially those with low quiescent current. The MAX4322/MAX4323/MAX4326/ MAX4327/MAX4329 have a high tolerance for capacitive loads. They are stable with capacitive loads up to 500pF. Figure 4 gives the stable operating region for capacitive loads. Figures 5 and 6 show the response with capacitive loads and the results of adding an isolation resistor in series with the output (Figure 7). The resistor improves the circuit's phase margin by isolating the load capacitor from the op amp's output. Power-Up and Shutdown Mode The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 amplifiers typically settle within 1s after power-up. 10,000 VCC = 3V AV = +1 CAPACITIVE LOAD (pF) VOLTAGE (1V/div) IN OUT UNSTABLE REGION 1000 RL TO VEE VOUT = VCC / 2 100 100 2s/div Figure 3. Rail-to-Rail Input/Output Voltage Range IN AV = +1 CL = 1000pF RS = 39 OUT OUT 400ns/div Figure 5. Small-Signal Transient Response with Capacitive Load 10 100k VOLTAGE (50mV/div) IN 1k 10k RESISTIVE LOAD () Figure 4. Capacitive-Load Stability AV = +1 CL = 500pF VOLTAGE (50mV/div) MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps 400ns/div Figure 6. Transient Response to Capacitive Load with Isolation Resistor ______________________________________________________________________________________ Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 0 TO 2.7V STEP FOR POWER-UP TEST 2k RS VOUT CL MAX4322/MAX4323 MAX4326/MAX4327 MAX4329 SUPPLY-CURRENT 10 MONITORING POINT 2k 10k Figure 7. Capacitive-Load-Driving Circuit Figure 8. Power-Up Test Circuit Figures 9 and 10 show the output voltage and supply current on power-up of the test circuit in Figure 8. 0.33mm (13mil). Round or square pads are permissible. Connect multiple vias from the ground plane as close to the ground connections as possible. The MAX4323 and MAX4327 have a shutdown option. When shutdown (SHDN) is pulled low, the supply current drops to 25A per amplifier and the amplifiers are disabled with the outputs in a high-impedance state. Pulling SHDN high or leaving it floating (1A internal pullup) enables the amplifier. In the dual-amplifier MAX4327, the shutdown functions operate independently. Figures 11 and 12 show the output voltage and supply current responses of the MAX4323 to a shutdown pulse. Power Supplies and Layout The MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 operate from a single 2.4V to 6.5V power supply, or from dual supplies of 1.2V to 3.25V. For single-supply operation, bypass the power supply with a 0.1F ceramic capacitor in parallel with at least 1F. For dual supplies, bypass each supply to ground. Good layout improves performance by decreasing the amount of stray capacitance at the op amp's inputs and outputs. To decrease stray capacitance, minimize trace lengths and resistor leads by placing external components close to the op amp. UCSP Information Layout Issues Design the layout for the device to be as compact as possible to minimize parasitics. The UCSP uses a bump pitch of 0.5mm (19.7mil) and a bump diameter of 0.33mm (~12mil). Therefore, lay out the solder-pad spacing on 0.5mm (19.7mil) centers, using a pad size of 0.25mm (~10mil) and a solder mask opening of Install capacitors as close as possible to the device supply voltage input. Place the ground end of these capacitors near the ground plane to provide a lowimpedance return path for the signal current. Prototype Chip Installation Alignment keys on the PC board, around the area where the chip is located, are helpful in the prototype assembly process. It is better to align the chip on the board before any other components are placed, and then place the board on a hot plate or hot surface until the solder starts melting. Remove the board from the hot plate without disturbing the position of the chip and let it cool down to room temperature before processing the board further. MAX4323EBT (UCSP) Marking Information TOP VIEW (BUMPS ON BOTTOM) A1 A2 A3 ORIENTATION PRODUCT ID CODE LOT CODE AAA AAA ______________________________________________________________________________________ 11 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 VCC VCC VCC 1V/div VOLTAGE (1V/div) MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps OUT ICC 500A/div 5s/div 5s/div Figure 9. Power-Up Output Voltage Figure 10. Power-Up Supply Current VCC = 2.7V RL = 10k VCC = 2.7V SHDN 1V/div SHDN 1V/div OUT 0.5V/div ICC 500A/div 2s/div Figure 11. Shutdown Output Voltage 12 2s/div Figure 12. Shutdown Enable/Disable Supply Current ______________________________________________________________________________________ Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps TOP VIEW OUT 1 VEE 2 5 VCC IN1- 2 MAX4322 IN+ 3 N.C. 1 IN- 4 IN1- 2 IN1+ 3 7 5 SO/MAX VCC 6 OUT VEE 4 5 N.C. VCC VEE 2 OUT2 IN2- 14 VCC IN1- 2 13 OUT2 IN2+ VEE 4 MAX4327 N.C. 5 MAX4323 IN+ 3 6 VCC 5 SHDN 4 IN- N.C. 1 8 SHDN 7 VCC IN1+ 3 6 OUT VEE 4 5 N.C. IN1- 2 OUT1 1 IN1- 12 IN2- IN1+ 3 11 IN2+ VEE 4 10 N.C. SHDN1 6 9 SHDN2 N.C. 7 8 N.C. SHDN1 OUT1 1 14 OUT4 OUT2 IN1- 2 13 IN4- 8 IN2- IN1+ 3 7 IN2+ VCC 4 SHDN2 IN2+ 5 10 VCC 2 9 MAX4327 5 MAX4323 SO/MAX SOT23 OUT1 1 IN1+ 3 6 VEE 4 7 OUT 1 SO/MAX 8 MAX4326 N.C. IN1+ 3 SOT23-5 OUT1 1 MAX4322 8 6 MAX 12 IN4+ MAX4329 10 IN3+ IN2- 6 9 IN3- OUT2 7 8 OUT3 SO UCSP Reliability The UCSP represents a unique packaging form factor that may not perform as well as a packaged product through traditional mechanical reliability tests. UCSP reliability is integrally linked to the user's assembly methods, circuit board material, and usage environment. The user should closely review these areas when considering use of a UCSP. Performance through operating-life test and moisture resistance remains uncompromised. The wafer-fabrication process primarily determines the performance. Mechanical stress performance is a greater consideration for UCSPs. UCSPs are attached through direct solder contact to the user's PC board, foregoing the inherent stress relief of a packaged product lead frame. Solder-joint contact integrity must be considered. Comprehensive reliability tests have been performed and are available upon request. In conclusion, the UCSP performs reliably through environmental stresses. 11 VEE SO Ordering Information (continued) TEMP RANGE PART PIN/BUMPPACKAGE MAX4323EBT-T* -40oC to +85oC TOP MARK 6 UCSP-6 AAW MAX4323EUT-T -40oC to +85oC 6 SOT23-6 AAEC MAX4323EUA -40oC to +85oC 8 MAX -- o o MAX4323ESA -40 C to +85 C 8 SO -- MAX4326EUA -40oC to +85oC 8 MAX -- MAX4326ESA -40oC to +85oC 8 SO -- o o MAX4327EUB -40 C to +85 C 10 MAX -- MAX4327ESD -40oC to +85oC 14 SO -- MAX4329ESD -40oC to +85oC 14 SO -- *UCSP reliability is integrally linked to the user's assembly methods, circuit board material, and environment. See the UCSP Reliability Notice in the UCSP Reliability section of this data sheet for more information. ______________________________________________________________________________________ 13 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Pin Configurations (continued) Typical Operating Circuit MAX4322 TRANSISTOR COUNT: 170 MAX4323 TRANSISTOR COUNT: 170 MAX4326 TRANSISTOR COUNT: 340 MAX4327 TRANSISTOR COUNT: 340 MAX4329 TRANSISTOR COUNT: 680 PROCESS: Bipolar SUBSTRATE CONNECTED TO VEE +5V MAX187 3 6 SERIAL INTERFACE 8 7 SHDN VDD DOUT AIN SCLK VREF CS GND Chip Information 1 2 MAX4322 4 5 Package Information (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) e 10LUMAX.EPS MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps 4X S 10 INCHES 10 H y 0.500.1 0.60.1 1 1 0.60.1 BOTTOM VIEW TOP VIEW D2 MILLIMETERS MAX DIM MIN 0.043 A 0.006 A1 0.002 A2 0.030 0.037 D1 0.116 0.120 D2 0.114 0.118 E1 0.116 0.120 E2 0.114 0.118 H 0.187 0.199 L 0.0157 0.0275 L1 0.037 REF b 0.007 0.0106 e 0.0197 BSC c 0.0035 0.0078 0.0196 REF S 0 6 MAX MIN 1.10 0.05 0.15 0.75 0.95 2.95 3.05 2.89 3.00 3.05 2.95 2.89 3.00 4.75 5.05 0.40 0.70 0.940 REF 0.177 0.270 0.500 BSC 0.090 0.200 0.498 REF 0 6 E2 GAGE PLANE A2 c A b D1 FRONT VIEW A1 E1 L L1 SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 10L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. 21-0061 14 ______________________________________________________________________________________ REV. I 1 1 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps 6L, UCSP.EPS SOT5L.EPS ______________________________________________________________________________________ 15 MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) Package Information (continued) 6LSOT.EPS (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.) 4X S 8 E y 0.500.1 8 INCHES DIM A A1 A2 b H c D e E H 0.60.1 1 L 1 0.60.1 S BOTTOM VIEW D MIN 0.002 0.030 MAX 0.043 0.006 0.037 0.010 0.014 0.005 0.007 0.116 0.120 0.0256 BSC 0.116 0.120 0.188 0.198 0.016 0.026 6 0 0.0207 BSC 8LUMAXD.EPS MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Single/Dual/Quad, Low-Cost, UCSP/SOT23, Low-Power, Rail-to-Rail I/O Op Amps MILLIMETERS MAX MIN 0.05 0.75 1.10 0.15 0.95 0.25 0.36 0.13 0.18 2.95 3.05 0.65 BSC 2.95 3.05 5.03 4.78 0.41 0.66 0 6 0.5250 BSC TOP VIEW A1 A2 e FRONT VIEW A c b L SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, 8L uMAX/uSOP APPROVAL DOCUMENT CONTROL NO. 21-0036 16 REV. J 1 1 ______________________________________________________________________________________ Single/Dual/Quad, Low-Cost, SOT23, Low-Power, Rail-to-Rail I/O Op Amps N E H INCHES MILLIMETERS MAX MIN 0.053 0.069 0.004 0.010 0.014 0.019 0.007 0.010 0.050 BSC 0.150 0.157 0.228 0.244 0.016 0.050 MAX MIN 1.35 1.75 0.10 0.25 0.35 0.49 0.19 0.25 1.27 BSC 3.80 4.00 5.80 6.20 0.40 SOICN .EPS DIM A A1 B C e E H L 1.27 VARIATIONS: 1 INCHES TOP VIEW DIM D D D MIN 0.189 0.337 0.386 MAX 0.197 0.344 0.394 MILLIMETERS MIN 4.80 8.55 9.80 MAX 5.00 8.75 10.00 N MS012 8 AA 14 AB 16 AC D A B e C 0-8 A1 L FRONT VIEW SIDE VIEW PROPRIETARY INFORMATION TITLE: PACKAGE OUTLINE, .150" SOIC APPROVAL DOCUMENT CONTROL NO. 21-0041 REV. B 1 1 Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 ____________________ 17 (c) 2002 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products. MAX4322/MAX4323/MAX4326/MAX4327/MAX4329 Package Information (continued) (The package drawing(s) in this data sheet may not reflect the most current specifications. For the latest package outline information, go to www.maxim-ic.com/packages.)