19-2322; Rev 0; 1/02 230 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable The MAX4389 single, MAX4393 dual, MAX4394 triple, and MAX4396 quad include disable capabilities. The MAX4389 and MAX4390 are available in ultra-small, 6-pin SC70 packages. Applications Features Low Cost High Speed 145MHz -3dB Bandwidth 35MHz 0.1dB Gain Flatness 200V/s Slew Rate Single 4.5V to 11V or Dual 2.25V to 5.5V Operation Rail-to-Rail Outputs Input Common-Mode Range Extends to VEE Low Differential Gain/Phase: 0.015%/0.015 Low Distortion at 5MHz -59dBc Spurious-Free Dynamic Range High Output Drive: 50mA 450A Disable Capability (MAX4389/MAX4393/MAX4394/MAX4396) Space-Saving SC70, SOT23, MAX, or TSSOP Packages Set-Top Boxes Ordering Information Surveillance Video Systems Analog-to-Digital Converter Interface PART TEMP RANGE PINPACKAGE Digital Cameras MAX4389EXT-T -40C to +85C 6 SC70-6 Video-on-Demand MAX4389EUT-T -40C to +85C 6 SOT23-6 Video Line Driver MAX4390EXT-T -40C to +85C 6 SC70-6 MAX4390EUK-T -40C to +85C 5 SOT23-5 CCD Imaging Systems Typical Operating Circuit TOP MARK ABF ABDC ABE ADZM Ordering Information continued at end of data sheet. Selector Guide appears at end of data sheet. Pin Configurations DISABLE IN TOP VIEW 75 OUT Zo = 75 MAX4389 OUT 1 6 VCC 5 DISABLE 4 IN- 75 VEE 2 200 200 MAX4389 IN+ 3 VIDEO LINE DRIVER Rail-to-Rail is a registered trademark of Nippon Motorola, Ltd. SC70/SOT23 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 MAX4389/MAX4390/MAX4392-MAX4396 General Description The MAX4389/MAX4390/MAX4392-MAX4396 family of op amps are unity-gain stable devices that combine high-speed performance, Rail-to-Rail(R) outputs, and disable mode. These devices are targeted for applications where an input or an output is exposed to the outside world, such as video and communications. The MAX4389/MAX4390/MAX4392-MAX4396 operate from a single 4.5V to 11V supply or from dual 2.25V to 5.5V supplies. The common-mode input voltage range extends to the negative power-supply rail (ground in single-supply applications). The MAX4389/MAX4390/ MAX4392-MAX4396 consume only 5.5mA of quiescent supply current per amplifier while achieving a 145MHz -3dB bandwidth, 35MHz 0.1dB gain flatness, and a 200V/s slew rate. Disable mode sets the outputs to high impedance while consuming only 450A of current. MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable ABSOLUTE MAXIMUM RATINGS Supply Voltage (VCC to VEE) ..................................-0.3V to +12V IN_+, IN_-, OUT_, DISABLE.............(VEE - 0.3V) to (VCC + 0.3V) Differential Input Voltage ....................................................2.5V Current into Input Pins ......................................................20mA Output Short-Circuit Duration to VCC or VEE (Note 1)................................................Continuous Continuous Power Dissipation (TA = +70C) 5-Pin SOT23 (derate 7.1mW/C above +70C)............571mW 6-Pin SOT23 (derate 8.7mW/C above +70C)............696mW 6-Pin SC70 (derate 3.1mW/C above +70C) ..............245mW 8-Pin SO (derate 5.88mW/C above +70C)................471mW 8-Pin MAX (derate 4.5mW/C above +70C) .............362mW 10-Pin MAX (derate 5.6mW/C above +70C) ...........444mW 14-Pin SO (derate 8.33mW/C above +70C)..............667mW 14-Pin TSSOP (derate 10mW/C above +70C) ..........727mW 20-Pin TSSOP (derate 10.9mW/C above +70C) .......879mW Operating Temperature Range ...........................-40C to +85C Junction Temperature ......................................................+150C Storage Temperature Range .............................-65C to +150C Lead Temperature (soldering, 10s) .................................+300C Note 1: Continuous power dissipation must also be observed. 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 (VCC = 5V, VEE = -5V, RL = to GND, VCM = 0, VOUT = GND, GND = 0, DISABLE = VCC, and TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER Supply Voltage Range Quiescent Supply Current Input Offset Voltage Input Offset Voltage Temperature Coefficient SYMBOL VCC, VEE ICC VOS Input Bias Current Input Offset Current MAX UNITS 5.5 V mA Per amplifier, DISABLE = VCC 6.5 10 TA = +25C 6.5 20 TA = -40C to +85C 28 MAX4392-MAX4396 VCM TYP Inferred from the CMRR test 8 V/C 1 mV VCC 2.25 V 6.5 20 A VEE IB 0.5 7 A IIL 25 60 A IIH MAX4389/MAX4393/MAX4394/MAX4396, DISABLE = VCC 10 40 A ISHDN MAX4389/MAX4393/MAX4394/MAX4396, DISABLE = 0 450 800 A Disable_ Voltage OFF VIL MAX4389/MAX4393/MAX4394/MAX4396 VCC 3 V Disable_ Voltage ON VIH MAX4389/MAX4393/MAX4394/MAX4396 Input Resistance RIN Disable_ Logic Input High Current IOS mV MAX4389/MAX4393/MAX4394/MAX4396, DISABLE = 0 Disable_ Logic Input Low Current Disable_ Supply Current 2 MIN 2.25 TCVOS Input Offset Voltage Match Input Common-Mode Range CONDITIONS Inferred from PSRR test VCC 1.25 V Common mode (VEE < VCM < VCC - 2.25V) 1.5 M Differential mode (-1V < VIN < 1V) 100 k Common-Mode Rejection Ratio CMRR VEE < VCM < VCC - 2.25V 66 75 dB Open-Loop Gain AVOL VEE + 1V < VOUT < VCC - 1V, RL = 150 50 63 dB Power-Supply Rejection Ratio PSRR -5.5V < VEE < -4.5V, 5.5V > VCC > 4.5V 48 62 dB _______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable (VCC = 5V, VEE = -5V, RL = to GND, VCM = 0, VOUT = GND, GND = 0, DISABLE = VCC, and TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 2) PARAMETER SYMBOL CONDITIONS RL = 150 to GND Output-Voltage Swing VOUT RL = 1k to GND Output Source/Sink Current IOUT RL = 20 to GND TYP MAX VCC - VOH MIN 0.6 1 VOL - VEE 0.4 0.8 VCC - VOH 0.2 0.3 VOL - VEE 0.125 0.25 Sourcing 35 50 Sinking 70 90 Output Short-Circuit Current UNITS V mA 100 mA AC ELECTRICAL CHARACTERISTICS (VCC = 5V, VEE = -5V, RL = to GND, GND = 0, VOUT = 0, Gain = 1V/V, DISABLE = VCC, and TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS Small-Signal -3dB Bandwidth BWSS VOUT = 100mVP-P 145 MHz Large-Signal -3dB Bandwidth BWLS VOUT = 2VP-P 127 MHz Small-Signal Bandwidth for 0.1dB Gain Flatness BW0.1dBss VOUT = 100mVP-P 35 MHz Large-Signal Bandwidth for 0.1dB Gain Flatness BW0.1dBLS VOUT = 2VP-P 27 MHz SR VOUT = 2V step 200 V/s tS VOUT = 2V step 12 ns VOUT = 100mVP-P 3 ns fC = 5MHz, VOUT = 2VP-P -59 dBc Degrees Slew Rate Settling Time to 0.1% Rise/Fall Time tR/tF Spurious-Free Dynamic Range SFDR Differential Phase Error DP NTSC, RL = 150 0.015 Differential Gain Error DG NTSC, RL = 150 0.015 % Input Noise-Voltage Density en f = 10kHz 13 nV/Hz Input Noise-Current Density in f = 10kHz 2.1 pA/Hz 1 pF f = 5MHz 0.6 Disable OFF Time MAX4389/MAX4393/MAX4394/MAX4396 0.65 s Disable ON Time MAX4389/MAX4393/MAX4394/MAX4396 0.35 s Channel-to-Channel Isolation MAX4392/MAX4393/MAX4394/MAX4395/ MAX4396, specified at DC -97 dB Input Capacitance CIN Output Impedance ZOUT CHISO Note 2: All devices are 100% production tested at TA = +25C. Specifications over temperature limits are guaranteed by design. _______________________________________________________________________________________ 3 MAX4389/MAX4390/MAX4392-MAX4396 DC ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (VCC = 5V, VEE = -5V, VCM = 0, AVCL = 1V/V, RL = 100 to GND, GND = 0, TA = +25C, unless otherwise noted.) 3 2 1 0 0 GAIN (dB) 1 -1 -2 VOUT = 2VP-P 0.2 0.1 -1 -2 -0.2 -0.3 -4 -4 -0.4 -5 -5 -0.5 -6 -6 10M 1G 100M -0.6 1M 100k FREQUENCY (Hz) 1G 100k OUTPUT IMPEDANCE vs. FREQUENCY OUTPUT IMPEDANCE () 0.1 0 -0.1 -0.2 -0.3 -0.4 -10 -20 10 1 100M 1G VOUT = 2VP-P AVCL = 1V/V -30 -40 -50 3RD HARMONIC -60 -70 0.1 2ND HARMONIC -80 -0.5 -90 0.01 10M 1G 100M 1M 100k FREQUENCY (Hz) 10M 100M 1G 100k DISTORTION vs. FREQUENCY MAX4389 toc07 0 AVCL = 2V/V -20 -10 VOUT = 2VP-P AVCL = 5V/V -20 DISTORTION (dBc) -30 -40 -50 3RD HARMONIC -60 DISTORTION vs. RESISTIVE LOAD -30 -40 3RD HARMONIC -50 -60 0 2ND HARMONIC -40 -50 -60 -90 -90 -100 FREQUENCY (Hz) 100M 2ND HARMONIC -70 -80 10M AVCL = 1V/V -30 -70 1M VOUT = 2VP-P -20 -80 2ND HARMONIC fo = 5MHZ -10 -70 -90 100M 10M FREQUENCY (Hz) DISTORTION vs. FREQUENCY VOUT = 2VP-P 100k 1M FREQUENCY (Hz) DISTORTION (dBc) 1M MAX4389 toc08 100k -100 MAX4389 toc09 -0.6 -10 10M DISTORTION vs. FREQUENCY 0 DISTORTION (dBc) VOUT = 2VP-P 0.2 0 1M FREQUENCY (Hz) MAX4389 toc05 0.3 100M 100 MAX4389 toc04 0.4 10M FREQUENCY (Hz) LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY 4 0 -0.1 -3 1M VOUT = 100mVP-P 0.3 -3 100k GAIN (dB) 0.4 MAX4389 toc03 2 GAIN (dB) 4 GAIN (dB) VOUT = 100mVP-P MAX4389 toc02 3 MAX4389 toc01 4 SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY LARGE-SIGNAL GAIN vs. FREQUENCY MAX4389 toc06 SMALL-SIGNAL GAIN vs. FREQUENCY DISTORTION (dBc) MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable -80 100k 1M 10M FREQUENCY (Hz) 100M 3RD HARMONIC 0 200 400 600 RLOAD () _______________________________________________________________________________________ 800 1000 1200 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable -50 DIFF PHASE () 3RD HARMONIC -60 -70 2ND HARMONIC -80 -90 1.0 0.5 1.5 -10 -20 0 -0.005 -0.010 0.020 0.015 0.010 0.005 0 -0.005 -0.010 -40 -50 -60 -70 -80 0 2.0 -30 10 20 30 40 50 60 70 80 90 100 100k 1M 10M 100M VOLTAGE SWING (VP-P) IRE FREQUENCY (Hz) POWER-SUPPLY REJECTION vs. FREQUENCY OUTPUT VOLTAGE SWING vs. RESISTIVE LOAD SMALL-SIGNAL PULSE RESPONSE -10 -20 -30 -40 -50 1.6 MAX4389 toc14 MAX4389 toc13 0 PSR (dB) 0 1.4 1.2 AVCL = 1V/V INPUT 50mV/div 1G MAX4389 toc15 -40 0.005 OUTPUT VOLTAGE SWING (V) DISTORTION (dBc) -30 0.010 CMR (dB) AVCL = 1V/V -20 0.015 MAX4389 toc11 fo = 5MHZ DIFF GAIN (%) -10 MAX4389 toc10 0 COMMON-MODE REJECTION vs. FREQUENCY DIFFERENTIAL GAIN AND PHASE MAX4389 toc12 DISTORTION vs. VOLTAGE SWING 1.0 0.8 0.6 VCC - VOH OUTPUT 50mV/div 0.4 -60 0.2 -70 0 VOL- VEE 10M 100M 0 1G 100 200 300 400 500 RLOAD () SMALL-SIGNAL PULSE RESPONSE SMALL-SIGNAL PULSE RESPONSE 600 20ns/div LARGE-SIGNAL PULSE RESPONSE AVCL = 1V/V MAX4389 toc18 FREQUENCY (Hz) _______________________________________________________________________________________ 5 AAVCL = 2V/V VCL = +2V/V RRFF == 200 200 INPUT 25mV/div AVCL = 5V/V RF = 250 INPUT 10mV/div 20ns/div INPUT 500mV/div OUTPUT 500mV/div OUTPUT 50mV/div OUTPUT 50mV/div MAX4389 toc17 1M MAX4389 toc16 100k 20ns/div 20ns/div MAX4389/MAX4390/MAX4392-MAX4396 Typical Operating Characteristics (continued) (VCC = 5V, VEE = -5V, VCM = 0, AVCL = 1V/V, RL = 100 to GND, GND = 0, TA = +25C, unless otherwise noted.) Typical Operating Characteristics (continued) (VCC = 5V, VEE = -5V, VCM = 0, AVCL = 1V/V, RL = 100 to GND, GND = 0, TA = +25C, unless otherwise noted.) LARGE-SIGNAL PULSE RESPONSE INPUT 100mV/div OUTPUT 500mV/div OUTPUT 500mV/div RL = 100 100 10 1 20ns/div 20ns/div MAX4389 toc21 INPUT 250mV/div AVCL = 5V/V RF = 250 VOLTAGE NOISE (nV/Hz) AVCL = 2V/V RF = 200 VOLTAGE NOISE vs. FREQUENCY 1000 MAX4389 toc20 MAX4389 toc19 LARGE-SIGNAL PULSE RESPONSE 1 10 100 1k 10k 100k FREQUENCY (Hz) ISOLATION RESISTANCE vs. CAPACITIVE LOAD 15 LARGE SIGNAL VOUT = 2VP-P BANDWIDTH (MHz) 13 12 SMALL SIGNAL VOUT = 100mVP-P 11 100 1k 10k 0 0 50 100 150 200 250 300 350 400 450 500 550 100k OPEN-LOOP GAIN vs. RESISTIVE LOAD CROSSTALK vs. FREQUENCY DISABLE RESPONSE 40 30 MAX4389 toc26 -20 CROSSTALK (dB) 50 5V DISABLE -30 0 -40 -50 -60 1.5V -70 20 VOUT -80 10 -90 0 -100 100 1k RLOAD () 6 -10 60 100 200 300 400 500 600 700 800 RLOAD (k) 0 MAX4389 toc25 70 0 CLOAD (pF) FREQUENCY (Hz) 80 75 MAX4389 toc27 10 100 25 9 1 125 50 10 1 175 150 14 10 200 MAX4389 toc23 16 RISO () CURRENT NOISE (pA/Hz) RL = 100 MAX4389 toc22 100 SMALL-SIGNAL BANDWIDTH vs. LOAD RESISTANCE MAX4389 toc24 CURRENT NOISE vs. FREQUENCY OPEN-LOOP GAIN (dBc) MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable 10k 0 100k 1M 10M 100M 1G 200ns/div FREQUENCY (Hz) _______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable INPUT BIAS CURRENT vs. TEMPERATURE 5 4 3 2 1 6 5 4 3 -50 -25 0 25 50 TEMPERATURE (C) 75 100 6 5 4 3 2 2 1 1 0 0 7 SUPPLY CURRENT (mA) 6 8 MAX4389 toc29 7 INPUT BIAS CURRENT (A) 7 INPUT OFFSET VOLTAGE (mV) 8 MAX4389 toc28 8 SUPPLY CURRENT vs. TEMPERATURE MAX4389 toc30 INPUT OFFSET VOLTAGE vs. TEMPERATURE 0 -50 -25 0 25 50 TEMPERATURE (C) 75 100 -50 -25 0 25 50 75 100 TEMPERATURE (C) _______________________________________________________________________________________ 7 MAX4389/MAX4390/MAX4392-MAX4396 Typical Operating Characteristics (continued) (VCC = 5V, VEE = -5V, VCM = 0, AVCL = 1V/V, RL = 100 to GND, GND = 0, TA = +25C, unless otherwise noted.) Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable MAX4389/MAX4390/MAX4392-MAX4396 Pin Description PIN MAX4389 8 MAX4390 MAX4392 MAX4393 MAX4394 MAX4395 MAX4396 SC70/SOT23 SC70 SOT23 MAX/SO MAX SO/TSSOP SO/TSSOP TSSOP 1 1 1 -- -- -- -- -- NAME FUNCTION OUT Amplifier Output 2 2 2 4 4 11 11 16 VEE Negative Power Supply. Connect a 0.1F Capacitor to GND. 3 3 3 -- -- -- -- -- IN+ Noninverting Input 4 4 4 -- -- -- -- -- IN- Inverting Input 5 -- -- -- -- -- -- -- DISABLE Disable. Connect to VCC to Enable. 6 6 5 8 10 4 4 5 VCC Positive Power Supply. Connect a 0.1F Capacitor to GND. -- 5 -- -- -- -- -- 10, 11 N.C. No Connection. Not Internally Connected. -- -- -- 3 3 5 3 4 INA+ Amplifier A Noninverting Input -- -- -- 2 2 6 2 3 INA- Amplifier A Inverting Input -- -- -- 1 1 7 1 2 OUTA Amplifier A Output Shutdown Amplifier A. Connect to VCC to Enable. -- -- -- -- 5 1 -- 1 DISABLEA -- -- -- 5 7 10 5 6 INB+ Amplifier B Noninverting Input -- -- -- 6 8 9 6 7 INB- Amplifier B Inverting Input -- -- -- 7 9 8 7 8 OUTB _______________________________________________________________________________________ Amplifier B Output Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable PIN MAX4389 SC70/SOT23 MAX4390 SC70 SOT23 MAX4392 MAX4393 MAX4394 MAX4395 MAX4396 MAX/SO MAX SO/TSSOP SO/TSSOP TSSOP NAME FUNCTION Shutdown Amplifier B. Connect to VCC to Enable. -- -- -- -- 6 3 -- 9 DISABLEB -- -- -- -- -- 12 10 15 INC+ Amplifier C Noninverting Input -- -- -- -- -- 13 9 14 INC- Amplifier C Inverting Input -- -- -- -- -- 14 8 13 OUTC Amplifier C Output Shutdown Amplifier C. Connect to VCC to Enable. -- -- -- -- -- 2 -- 12 DISABLEC -- -- -- -- -- -- 12 17 IND+ Amplifier D Noninverting Input -- -- -- -- -- -- 13 18 IND- Amplifier D Inverting Input -- -- -- -- -- -- 14 19 OUTD -- -- -- -- -- Detailed Description The MAX4389/MAX4390/MAX4392-MAX4396 are dualsupply, rail-to-rail, voltage-feedback amplifiers that employ current-feedback techniques to achieve 200V/s slew rates and 145MHz bandwidths. Excellent harmonic distortion and differential gain/phase performance make these amplifiers an ideal choice for a wide variety of video and RF signal-processing applications. Applications Information The output voltage swings to within 200mV of each supply rail. Local feedback around the output stage ensures low open-loop output impedance to reduce -- -- 20 DISABLED Amplifier D Output Shutdown Amplifier D. Connect to VCC to Enable. gain sensitivity to load variations. The input stage permits common-mode voltages to the negative supply and to within 2.25V of the positive supply rail. Choosing Resistor Values Unity-Gain Configuration The MAX4389/MAX4390/MAX4392-MAX4396 are internally compensated for unity gain. When configured for unity gain, a 24 resistor (RF) in series with the feedback path optimizes AC performance. This resistor improves AC response by reducing the Q of the parallel LC circuit formed by the parasitic feedback capacitance and inductance. _______________________________________________________________________________________ 9 MAX4389/MAX4390/MAX4392-MAX4396 Pin Description (continued) MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable Video Line Driver The MAX4389/MAX4390/MAX4392-MAX4396 are lowpower, voltage-feedback amplifiers featuring bandwidths up to 100MHz, 0.1dB gain flatness to 15MHz. They are designed to minimize differential-gain error and differential-phase error to 0.015% and 0.015, respectively. They have a 12ns settling time to 0.1%, 200V/s slew rates, and output-current-drive capability of up to 50mA making them ideal for driving video loads. Inverting and Noninverting Configurations Select the gain-setting feedback (RF) and input (RG) resistor values to fit your application. Large resistor values increase voltage noise and interact with the amplifier's input and PC board capacitance. This can generate undesirable poles and zeros and decrease bandwidth or cause oscillations. For example, a noninverting gain-of-two configuration (RF = RG) using 2k resistors, combined with 1pF of amplifier input capacitance and 1pF of PC board capacitance, causes a pole at 79.6MHz. Since this pole is within the amplifier bandwidth, it jeopardizes stability. Reducing the 2k resistors to 100 extends the pole frequency to 1.59GHz, but could limit output swing by adding 200 in parallel with the amplifier's load resistor (Figures 1a and 1b). RF RG VOUT MAX43_ _ VIN VOUT = [1 + (RF / RG)] VIN Layout and Power-Supply Bypassing The MAX4389/MAX4390/MAX4392-MAX4396 operate from single 4.5V to 11V or from dual 2.25V to 5.5V supplies. Bypass each supply with a 0.1F capacitor as close to the pin as possible. Maxim recommends using microstrip and stripline techniques to obtain full bandwidth. To ensure that the PC board does not degrade the amplifier's performance, design it for a frequency greater than 1GHz. Pay careful attention to inputs and outputs to avoid large parasitic capacitance. Whether or not you use a constant-impedance board, observe the following design guidelines: * Do not use wire-wrap boards; they are too inductive. * Do not use IC sockets; they increase parasitic capacitance and inductance. * Use surface-mount instead of through-hole components for better, high-frequency performance. * Use a PC board with at least two layers; it should be as free from voids as possible. * Keep signal lines as short and as straight as possible. Do not make 90 turns; round all corners. Low-Power Disable Mode The MAX4389/MAX4393/MAX4394/MAX4396 feature a disable function that allows the amplifiers to be placed in a low-power, high-output-impedance state. When the disable pin (DISABLE) is active, the amplifier's output impedance is 95k. This high resistance and the low 2pF output capacitance make the MAX4389/ MAX4390/MAX4392-MAX4396 in RF/video multiplexer or switch applications. For larger arrays, pay careful attention to capacitive loading (see the Output Capacitive Loading and Stability section). Output Capacitive Loading and Stability Figure 1a. Noninverting Gain Configuration RG RF VIN MAX43_ _ VOUT VOUT = -(RF / RG) VIN Figure 1b. Inverting Gain Configuration 10 The MAX4389/MAX4390/MAX4392-MAX4396 are optimized for AC performance. They are not designed to drive highly reactive loads, which decrease phase margin and may produce excessive ringing and oscillation. Figure 2 shows a circuit that eliminates this problem. Figure 3 is a graph of the Optimal Isolation Resistor (RS) vs. Capacitive Load. Figure 4 shows how a capacitive load causes excessive peaking of the amplifier's frequency response if the capacitor is not isolated from the amplifier by a resistor. A small isolation resistor (usually 10 to 15) placed before the reactive load prevents ringing and oscillation. At higher capacitive loads, AC performance is controlled by the interaction of the load capacitance and the isolation resistor. Figure 5 shows the effect of a 15 isolation resistor on closed-loop response. ______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable 4 3 RISO = 27 2 RISO VOUT VIN CL Figure 2. Driving a Capacitive Load Through an Isolation Resistor 68pF 47pF 1 GAIN (dB) MAX438 _ 0 -1 120pF -2 -3 -4 -5 -6 100k 16 10M 100M 1G FREQUENCY (Hz) LARGE SIGNAL (VOUT = 2VP-P) 15 Figure 5. Small-Signal Gain vs. Frequency with Load Capacitance and 27 Isolation Resistor 14 RISO () 1M 13 12 Chip Information SMALL SIGNAL (VOUT = 100mVP-P) 11 MAX4389 TRANSISTOR COUNT: 70 MAX4390 TRANSISTOR COUNT: 70 10 MAX4392 TRANSISTOR COUNT: 204 MAX4393 TRANSISTOR COUNT: 204 9 0 50 100 150 200 250 300 350 400 450 500 550 CLOAD (pF) Figure 3. Isolation Resistance vs. Capacitive Load MAX4394 TRANSISTOR COUNT: 298 MAX4395 TRANSISTOR COUNT: 396 MAX4396 TRANSISTOR COUNT: 396 PROCESS: BiCMOS 4 15pF 3 10pF 2 GAIN (dB) 1 0 -1 -2 5pF -3 -4 -5 -6 100k 1M 10M 100M 1G FREQUENCY (Hz) Figure 4. Small-Signal Gain vs. Frequency with Load Capacitance and No Isolation Resistor ______________________________________________________________________________________ 11 MAX4389/MAX4390/MAX4392-MAX4396 RF RG MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable Pin Configurations (continued) TOP VIEW TOP VIEW OUT 1 VEE 2 MAX4390 IN+ 3 6 VCC OUT 1 5 N.C. VEE 2 4 IN- IN+ 3 VCC 4 IN- MAX4390 SOT23 SC70 TOP VIEW TOP VIEW OUTA 1 INA- 2 INA+ 3 VEE 4 MAX4392 OUTA 1 10 VCC 8 VCC 7 OUTB INA- 2 9 OUTB 6 INB- INA+ 3 8 INB- 5 INB+ VEE 4 7 INB+ DISABLEA 5 6 DISABLEB MAX/SO MAX4393 MAX TOP VIEW TOP VIEW DISABLEA 1 14 OUTC DISABLEC 2 13 INC- INA- 2 13 IND- DISABLEB 3 12 INC+ INA+ 3 12 IND+ VCC 4 MAX4394 OUTA 1 14 OUTD 11 VEE VCC 4 10 INB+ INB+ 5 10 INC+ INA- 6 9 INB- INB- 6 9 INC- OUTA 7 8 OUTB OUTB 7 8 OUTC INA+ 5 SO/TSSOP 12 5 MAX4395 11 VEE SO/TSSOP ______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable Ordering Information (continued) PART TOP VIEW TEMP RANGE PINPACKAGE TOP MARK MAX4392EUA -40C to +85C 8 MAX -- 20 DISABLED MAX4392ESA -40C to +85C 8 SO -- OUTA 2 19 OUTD MAX4393EUB -40C to +85C 10 MAX -- INA- 3 18 IND- MAX4394ESD -40C to +85C 14 SO -- INA+ 4 17 IND+ MAX4394EUD -40C to +85C 14 TSSOP -- 16 VEE MAX4395ESD -40C to +85C 14 SO -- INB+ 6 15 INC+ MAX4395EUD -40C to +85C 14 TSSOP -- INB- 7 14 INC- MAX4396EUP -40C to +85C 20 TSSOP -- OUTB 8 13 OUTC DISABLEA 1 VCC 5 MAX4396 DISABLEB 9 Selector Guide 12 DISABLEC N.C. 10 11 N.C. TSSOP PART NO. OF AMPS DISABLE MAX4389 1 Yes MAX4390 1 No MAX4392 2 No MAX4393 2 Yes MAX4394 3 Yes MAX4395 4 No MAX4396 4 Yes ______________________________________________________________________________________ 13 MAX4389/MAX4390/MAX4392-MAX4396 Pin Configurations (continued) MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable 6LSOT.EPS SC70, 6L.EPS Package Information 14 ______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable SOT5L.EPS 8LUMAXD.EPS ______________________________________________________________________________________ 15 MAX4389/MAX4390/MAX4392-MAX4396 Package Information (continued) MAX4389/MAX4390/MAX4392-MAX4396 Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable SOICN.EPS 10LUMAX.EPS Package Information (continued) 16 ______________________________________________________________________________________ Ultra-Small, Low-Cost, 145MHz Op Amps with Rail-to-Rail Outputs and Disable TSSOP,NO PADS.EPS 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. MAX4389/MAX4390/MAX4392-MAX4396 Package Information (continued)