19-2932; Rev 2; 5/04 KIT ATION EVALU E L B AVAILA Audio Click-Pop Suppressor The MAX9890 provides click-and-pop suppression for devices such as CODECs with integrated headphone amplifiers that lack a clickless/popless startup/powerup or shutdown/power-down. The device controls the ramping of the DC bias voltage on the output-coupling capacitors and the application of the audio signal to ensure that no audible transients are present at the headphones. The MAX9890A features a 200ms startup time for use with up to 100F coupling capacitors. The MAX9890B features a 330ms startup time for use with greater than 100F coupling capacitors. The MAX9890 consumes 14A of supply current and 0.001A in shutdown, while contributing less than 0.003% THD+N into a 32 load. ESD (Human Body Model) protection circuitry on the outputs protect the MAX9890 and devices further up the signal chain from ESD strikes up to 8kV. The MAX9890 is available in a miniature (1.5mm 1.5mm 0.6mm) 9-bump chip-scale package (UCSPTM), as well as an 8-pin TDFN package (3mm 3mm 0.8mm), and is specified for operation over the -40C to +85C extended temperature range. Applications Features 36dB Click-Pop Suppression 2.7V to 5.5V Single-Supply Operation Clickless/Popless Startup/Power-Up and Shutdown/Power-Down 0.001A Low-Power Shutdown Mode THD+N < 0.003% Into 32 8kV ESD Protected Outputs (Human Body Model) Requires Only One 0.1F Capacitor to Complete the Circuit Low 14A Supply Current Tiny Packaging 9-Bump UCSP (1.5mm x 1.5mm x 0.6mm) 8-Pin TDFN (3mm x 3mm x 0.8mm) Ordering Information PART TEMP RANGE PINPACKAGE TOP MARK MAX9890AEBL-T -40C to +85C 9 UCSP-9 High-End Notebook Audio PDAs MAX9890AETA -40C to +85C 8 TDFN-EP** AHA Portable DVD Players Cell Phones MAX9890BEBL-T -40C to +85C 9 UCSP-9 ADW MAX9890BETA -40C to +85C 8 TDFN-EP** AHB Portable MP3 Players ADV **EP = Exposed pad. Simplified Block Diagram Selector Guide SINGLE SUPPLY 2.7V TO 5.5V OUTL INL RAMP UP INR RAMP DOWN PART PIN-PACKAGE SWITCH TURN-ON TIME (ms) MAX9890AEBL-T 9 UCSP-9 200 MAX9890AETA 8 TDFN-EP 200 MAX9890BEBL-T 9 UCSP-9 330 MAX9890BETA 8 TDFN-EP 330 OUTR MAX9890 Typical Application Circuit and Pin Configurations appear at end of data sheet. UCSP is a trademark of Maxim Integrated Products, Inc. ________________________________________________________________ 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 MAX9890 General Description MAX9890 Audio Click-Pop Suppressor ABSOLUTE MAXIMUM RATINGS (All Voltages are Referenced to GND) VCC ........................................................................................+6V CEXT, SHDN, OUT_ .................................................-0.3V to +6V IN_ ..............................................................-0.3V to (VCC + 0.3V) Continuous Current (IN_, OUT_).....................................150mA Continuous Current (All Other Pins) .................................20mA Continuous Power Dissipation (TA = +70C) 8-Pin TDFN (derate 24.4mW/C above +70C) ..........1951mW 9-Bump UCSP (derate 4.7mW/C above +70C)..........379mW Operating Temperature Range ...........................-40C to +85C Storage Temperature Range .............................-65C to +150C Junction Temperature ......................................................+150C Lead Temperature (soldering, 10s) .................................+300C Bump Temperature (soldering) Reflow ...........................................................................+235C 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. ELECTRICAL CHARACTERISTICS (VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS Supply Voltage Range VCC Inferred from RON test Supply Current ICC (Note 2) Shutdown Supply Current ISHDN Input Voltage Range On-Resistance On-Resistance Flatness RFLAT(ON) Output Discharge Resistance ROUT(DIS) 0.001 0 VUVLO V 22 A 1 A VCC V 1 VCC = 2.7V 0.7 1.5 Over input voltage range 2 VCC falling m 220 0.001 UNITS 5.5 0.4 Click-Pop Reduction ESD Protection MAX VCC = 5.5V SHDN = GND Input Off-Leakage Current VCC Power-Down Threshold (Note 3) 14 SHDN = GND Over input voltage range TYP 2.7 Inferred from RON test RON MIN k 1 A 2.5 V 36 dB OUT_, Human Body Model 8 kV MAX9890A 200 MAX9890B 330 DYNAMIC Turn-On Time (Note 4) tON Turn-Off Time tOFF (Note 5) ms 120 ns >100 kHz RL = 32, 30mW, f = 1kHz 0.003 % Off-Isolation, IN_ to OUT_ f = 20kHz, SHDN = GND, RL = 32 -108 dB Crosstalk (Switches ON) f = 20kHz -100 dB VRIPPLE = 0.5VP-P at 20Hz, fIN = 3kHz at 1VP-P, RL = 32 -100 VRIPPLE = 0.5VP-P at 1kHz, fIN = 3kHz at 1VP-P, RL = 32 -100 VRIPPLE = 0.5VP-P at 20kHz, fIN = 3kHz at 1VP-P, RL = 32 -84 Bandwidth Total Harmonic Distortion Plus Noise Power-Supply Rejection Ratio (Note 6) 2 THD+N PSRR _______________________________________________________________________________________ dB Audio Click-Pop Suppressor (VCC = 3V, SHDN = VCC, GND = 0, CCEXT = 0.1F, TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25C.) (Note 1) PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS LOGIC INPUT (SHDN) Logic-Input High Voltage VIH VCC = 2.7V to 5.5V Logic-Input Low Voltage VIL VCC = 2.7V to 5.5V Logic-Input Current IIN Note 1: Note 2: Note 3: Note 4: Note 5: Note 6: 2.0 V 0.8 V 1 A All devices are 100% tested at TA = +25C. All temperature limits are guaranteed by design. Supply current is measured when switch is on (i.e., SHDN = VCC, t > tON). Supply voltage level where the device enters its power-down cycle. Turn-on time is measured from the time VCC = 3V and SHDN > VIH until the RON specification is met. Switch turn-off time is measured from the time SHDN < VIL or VCC < VUVLO until the off-isolation specification is met. See the Power-Supply Rejection Ratio section for test method. Typical Operating Characteristics (VCC = 3V, CCEXT = 0.1F, typical values are at TA = +25C, unless otherwise noted.) SUPPLY CURRENT vs. TEMPERATURE VCC = 3V 0.5 0.4 VCC = 5V VCC = 5.5V 30 25 20 15 10 0.3 0.2 1 2 3 IN_ VOLTAGE (V) 4 5 800 700 600 500 400 VCC = 5.5V 300 VCC = 2.7V 100 0 0 SHDN = 0V 200 VCC = 2.7V 5 900 SHUTDOWN CURRENT (pA) 35 SUPPLY CURRENT (A) 0.6 SHUTDOWN CURRENT vs. TEMPERATURE 1000 MAX9890 toc02 MAX9890 toc01 0.7 ON-RESISTANCE () 40 MAX9890 toc03 ON-RESISTANCE vs. IN_ VOLTAGE 0.8 0 -40 -15 10 35 TEMPERATURE (C) 60 85 -40 -15 10 35 60 85 TEMPERATURE (C) _______________________________________________________________________________________ 3 MAX9890 ELECTRICAL CHARACTERISTICS (continued) Typical Operating Characteristics (continued) (VCC = 3V, CCEXT = 0.1F, typical values are at TA = +25C, unless otherwise noted.) PHASE SHIFT vs. FREQUENCY 0.2 RL = 32 -0.2 -0.4 RL = 16 -0.6 0 RL = 16 -1 -10 -2 -3 10 100 1k 10k 100k -50 -70 RL = 32 -90 RL = 16 -130 -5 -1.0 -30 -110 -4 -0.8 -150 10 1k 100 10k 100k 10 100 1k 10k 100k FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) CROSSTALK vs. FREQUENCY TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER -70 VCC = 5V RL = 16 f = 1kHz 10 -80 100 -110 -120 -130 1 THD+N (%) THD+N (%) -100 VCC = 5V RL = 32 f = 1kHz 10 1 -90 MAX9890toc09 -60 MAX9890 toc08 100 MAX9890 toc07 -50 CROSSTALK (dB) RL = 32 OFF-ISOLATION (dB) PHASE SHIFT (DEGREES) ON-LOSS (dB) 0.4 0 1 10 MAX9890 toc05 MAX9890 toc04 0.8 0.6 OFF-ISOLATION vs. FREQUENCY 2 MAX9890 toc06 ON-LOSS vs. FREQUENCY 1.0 0.1 0.1 0.01 0.01 0.001 0.001 -140 0.0001 -150 10 100 1k 10k 25 50 75 100 125 150 175 200 225 250 0 20 40 60 80 100 120 140 160 FREQUENCY (Hz) OUTPUT POWER (mW) OUTPUT POWER (mW) TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. OUTPUT POWER TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY THD+N (%) 0.1 0.1 0.01 0.01 0.001 0.001 VCC = 5V RL = 16 0.1 1 THD+N (%) 1 MAX9890toc12 VCC = 3V RL = 32 f = 1kHz 10 1 MAX9890toc11 100 MAX9890toc10 VCC = 3V RL = 16 f = 1kHz 10 0.0001 0 100k 100 THD+N (%) MAX9890 Audio Click-Pop Suppressor 0.01 OUTPUT POWER = 150mW 0.001 0.0001 0.0001 0 25 50 75 100 OUTPUT POWER (mW) 4 OUTPUT POWER = 25mW 0.0001 125 150 0 10 20 30 40 50 OUTPUT POWER (mW) 60 70 80 10 100 1k FREQUENCY (Hz) _______________________________________________________________________________________ 10k 100k Audio Click-Pop Suppressor VCC = 5V RL = 32 VCC = 3V RL = 16 1 VCC = 3V RL = 32 0.01 OUTPUT POWER = 70mW 0.1 THD+N (%) 0.1 THD+N (%) THD+N (%) 0.1 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY MAX9890toc14 1 MAX9890toc13 1 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY OUTPUT POWER = 60mW 0.01 0.001 0.001 OUTPUT POWER = 15mW OUTPUT POWER = 20mW OUTPUT POWER = 20mW 0.0001 0.0001 100 0.01 OUTPUT POWER = 30mW 0.001 10 MAX9890toc14 TOTAL HARMONIC DISTORTION PLUS NOISE vs. FREQUENCY 1k 10k 100k 0.0001 10 FREQUENCY (Hz) 100 1k 10k 100k 10 100 FREQUENCY (Hz) 1k 10k 100k FREQUENCY (Hz) SHUTDOWN WAVEFORM (DC) STARTUP WAVEFORM (DC) MAX9890 toc17 MAX9890 toc16 SHDN 2V/div SHDN 2V/div VOUT 1V/div VOUT 1V/div VHEADPHONE 10mV/div VHEADPHONE 10mV/div 10s/div 40ms/div SHUTDOWN WAVEFORM (AC) STARTUP WAVEFORM (AC) MAX9890 toc19 MAX9890 toc18 SHDN 2V/div SHDN 2V/div VOUT 1V/div VOUT 1V/div VHEADPHONE 1V/div VHEADPHONE 1V/div 40ms/div 1s/div _______________________________________________________________________________________ 5 MAX9890 Typical Operating Characteristics (continued) (VCC = 3V, CCEXT = 0.1F, typical values are at TA = +25C, unless otherwise noted.) Audio Click-Pop Suppressor MAX9890 Pin Description PIN/BUMP NAME FUNCTION C2 VCC Power Supply. VCC accepts 2.7V to 5.5V input supply. Bypass VCC to GND with a 1F capacitor. 2 C1 SHDN Active-Low Shutdown. Connect SHDN to GND to enter a 0.1A shutdown mode. Connect SHDN to VCC for normal operation. 3 B1 INL 4 A1 OUTL Left-Channel Audio Output. AC couple to headphone. 5 A2 GND Ground 6 A3 OUTR Right-Channel Audio Output. AC couple to headphone. TDFN UCSP 1 7 B3 INR 8 C3 CEXT Left-Channel Audio Input. Connect to output of headphone amplifier. Right-Channel Audio Input. Connect to output of headphone amplifier. External Capacitor. Connect a 0.1F capacitor from CEXT to GND. Detailed Description The MAX9890 provides click-and-pop suppression for single-supply devices such as CODECs and other headphone amplifiers that do not have click-and-pop suppression. Single-supply audio amplifier outputs have a DC bias voltage, VCC / 2, and require large output-coupling capacitors to block the DC voltage from the speaker. During startup or shutdown, the DC bias voltage is quickly raised or lowered (Figure 1), resulting in an audible transient through the headphone load. The MAX9890 prevents the audible transient by slowly ramping the DC bias in an S-shaped waveform (Figure 2), suppressing the large transient at the output of the coupling capacitor. The S-shaped waveform shapes the frequency spectrum, minimizing the amount of audible components present at the output. Internal switches couple the inputs to the outputs after the coupling capacitors have fully charged to the input common-mode bias voltage. When power is removed or the device is put into shutdown, the internal switches in the MAX9890 immediately disconnect the output and slowly discharge the coupling capacitors through 220k resistors. The MAX9890 has an undervoltage lockout (UVLO) that prevents device operation when VCC is below the power-down threshold (2.5V, typ). The MAX9890 features 8kV ESD (Human Body Model) protection on the audio outputs. Startup The MAX9890 monitors VCC and SHDN. The UVLO holds the device off when VCC is below the powerdown threshold (V UVLO ) or SHDN is held low. The device needs both VCC above the power-down thresh6 old and SHDN = high for the part to start up. Once the supply voltage is above the power-down threshold and SHDN is high, the device charges the coupling capacitors to the input DC bias voltage using CEXT to control the ramp. After the DC bias ramp, the internal switches close, coupling the audio input to the output. The MAX9890 provides click-pop suppression even if the output blocking capacitors are already partially or fully charged. The MAX9890A features a 200ms switch turn-on time, enabling the use of up to 100F coupling capacitors at the output for applications requiring only a limited lowfrequency response and a rapid turn-on time. The MAX9890B features a 330ms switch turn-on time, enabling the use of >100F coupling capacitors at the output for extended low-frequency response applications. For optional click-pop suppression, mute the audio signal until after the turn-on time has elapsed. The internal switches stay closed as long as VCC is above the power-down threshold voltage and SHDN is high. Figures 1 and 2 show typical startup/power-up sequences with and without click-pop suppression. Shutdown If the supply voltage falls below the UVLO threshold or if SHDN is driven low, the device enters low-power shutdown mode. In low-power shutdown mode, quiescent current reduces to 0.001A. The switches are immediately turned off and 220k resistors slowly bleed the charge off the coupling capacitors. Figures 3 and 4 show typical shutdown/power-down sequences with and without click-pop suppression. For optimal click-pop performance, mute the audio signal before shutting down the MAX9890. _______________________________________________________________________________________ Audio Click-Pop Suppressor 0dB VCC/SHDN 2V/div 0dB VOUT 1V/div VHEADPHONE 100mV/div VHEADPHONE 50mV/div FFTHEADPHONE 20dB/div FFTHEADPHONE 20dB/div 40ms/div FFT: 25Hz/div 40ms/div FFT: 25Hz/div Figure 1. Startup/Power-Up Sequence Without Click-Pop Suppression Figure 2. Startup/Power-Up Sequence With Click-Pop Suppression VCC/SHDN 2V/div VCC/SHDN 2V/div 0dB MAX9890 VCC/SHDN 2V/div VOUT 1V/div VOUT 1V/div 0dB VOUT 1V/div VHEADPHONE 500mV/div VHEADPHONE 20mV/div FFTHEADPHONE 20dB/div 100ms/div FFT: 25Hz/div FFTHEADPHONE 20dB/div 100ms/div FFT: 25Hz/div Figure 3. Shutdown/Power-Down Sequence Without Click-Pop Suppression Switches The MAX9890's internal switches connect the input to the output after the coupling capacitors are fully charged. The MAX9890A holds the switches open for 200ms and is ideal for coupling capacitors less than 100F. The MAX9890B has a longer turn-on time of 330ms and is Figure 4. Shutdown/Power-Down Sequence With Click-Pop Suppression ideal with larger coupling capacitors less than 220F. The internal switches have a low on-resistance (RON = 0.5) and on-resistance flatness (RFLAT(ON) = 2m) minimizing total harmonic distortion plus noise (THD+N). The relationship below shows the contribution to THD+N through the switch, due to on-resistance and on-resistance flat- _______________________________________________________________________________________ 7 MAX9890 Audio Click-Pop Suppressor OUTPUT SPECTRUM (dBV) VCC = 4.5V TO 5.5V, fVCC = 19kHz, RL = 32, VIN = 1VP-P, fIN = 20kHz VDC = 5V VAC = 1VP-P 19kHz 10 0 -10 -20 -30 -40 -50 -60 -70 -80 -90 -100 -110 -120 -130 -140 VCC SHDN OUT_ IN_ VDC = 2.0V VAC = 1VP-P 20kHz RL RAMP UP RAMP DOWN IN_ 15 17 19 21 23 OUT_ MAX9890 25 FREQUENCY (kHz) Figure 5. FFT for PSRR Figure 6. PSRR Test Circuit ness (on-resistance flatness is defined as the difference between the maximum and minimum values of on-resistance measured over the specific analog-signal range). The impedance of a headphone or speaker load and the output-coupling capacitor form a highpass filter with the -3dB point set by: THDMAXIMUM = RFLAT(ON) 4RLOAD x 100% Power-Supply Rejection Ratio (PSRR) PSRR is the measurement of AC power-supply ripple or noise that couples to the output. Variations in supply voltage corrupt the audio signal, due to changes in the RON value by supply modulation. The FFT shown in Figure 5 was taken with a 19kHz 1VP-P sine wave onto the 5V DC supply voltage, and a 20kHz 1VP-P sine wave applied at IN_ with a 32 load is shown in Figure 6. The MAX9890 maintains a -100dB (typ) PSRR across the supply voltage range eliminating any corruption of the audio signal from supply variations. Therefore, with a zero audio signal, the RON variation due to supply voltage ripple does not contribute to any output signal modulation. Low-Frequency Response In addition to the cost and size disadvantages of the output-coupling capacitors, these capacitors limit the amplifier's low-frequency response and can distort the audio signal. 8 f-3dB = 1 2RLCOUT where RL is the headphone impedance and COUT is the output-coupling capacitor value. The highpass filter is required by conventional single-ended, single powersupply headphone drivers to block the midrail DC bias component of the audio signal from the headphones. The drawback to the filter is that it can attenuate lowfrequency signals. Larger values of COUT reduce this effect but result in physically larger, more expensive capacitors. Figure 7 shows the relationship between the size of COUT and the resulting low-frequency attenuation. Note that the -3dB point for a 16 headphone with a 100F blocking capacitor is 100Hz, well within the normal audio band, resulting in low-frequency attenuation of the reproduced signal. The MAX9890A and MAX9890B have different turn-on times to accommodate different size output-coupling capacitors (see Table 1). Using a capacitor smaller than the specified maximum allowed does not degrade click-pop suppression. Therefore, capacitors less than 100F can be used with the A or B version devices. _______________________________________________________________________________________ Audio Click-Pop Suppressor MAX9890 Table 1. Coupling Capacitor LOW-FREQUENCY ROLLOFF (RL = 16) 0 CAPACITOR SIZE (F) MAX9890A TURN-ON TIME (200ms) MAX9890B TURN-ON TIME (300ms) 33 47 100 150 * 220 * 330 -- * 470 -- * -3 ATTENUATION (dB) -6 330F -9 220F -12 100F -15 -18 33F -21 -24 -27 *May experience some degradation of click-pop suppression. -30 10 100 1k 10k 100k FREQUENCY (Hz) Figure 7. Low-Frequency Attenuation for Common DC-Blocking Capacitor Values External Capacitor (CCEXT) The external click-pop suppression capacitor at CEXT serves a dual purpose. On power-up, C CEXT is charged by an internal current source and is used to slowly ramp up the external coupling capacitors. When the device is powered down, CCEXT powers the internal circuitry used to drain the external coupling capacitors. A 0.1F capacitor between CEXT and GND provides clickless/popless operation with coupling capacitors for both the MAX9890A and MAX9890B, even with the rapid removal of supply voltage. Applications Information Layout UCSP Applications Information For the latest application details on UCSP construction, dimensions, tape-carrier information, printed circuit board techniques, bump-pad layout, and recommended reflow temperature profile, as well as the latest information on reliability testing results, refer to the Application Note, "UCSP--A Wafer-Level Chip-Scale Package" available on Maxim's website at www.maximic.com/ucsp. Chip Information TRANSISTOR COUNT: 1001 PROCESS: BiCMOS Good layout improves performance by decreasing the amount of stray capacitance and noise. To decrease stray capacitance, minimize PC board trace lengths and resistor leads, and place external components as close to the device as possible. Power Supply and Bypassing The excellent PSRR of the MAX9890 allows it to operate from noisy power supplies. In most applications, a 0.1F capacitor from V CC to GND is sufficient. This bypass capacitor should be placed close to VCC. _______________________________________________________________________________________ 9 Audio Click-Pop Suppressor MAX9890 Pin Configurations (BUMPS ON BOTTOM) TOP VIEW 1 2 3 OUTL GND OUTR MAX9890 VCC 1 A 8 CEXT SHDN 2 7 INR 6 OUTR INL 3 B INL 5 GND OUTL 4 TDFN-EP MAX9890 INR C NOTE: GND IS CONNECTED TO THE UNDERSIDE METAL SLUG. SHDN VCC CEXT UCSP Typical Application Circuit 2.7V TO 5.5V 1 (C2) 1F VCC 2 (C1) SHDN HPLOUT 3 (B1) INL 7 (B3) INR CEXT 8 (C3) 0.1F RAMP-UP AND RAMP-DOWN CONTROL STARTUP AND SHUTDOWN CONTROL OUTL 4 (A1) * CODEC WITH INTEGRATED HEADPHONE DRIVERS HPROUT OUTR 6 (A3) * MAX9890 GND 5 (A2) 10 ( ) UCSP BUMP. *USER-DEFINED VALUE. ______________________________________________________________________________________ Audio Click-Pop Suppressor 9LUCSP, 3x3.EPS PACKAGE OUTLINE, 3x3 UCSP 21-0093 L 1 1 ______________________________________________________________________________________ 11 MAX9890 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.) 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.) 6, 8, &10L, DFN THIN.EPS MAX9890 Audio Click-Pop Suppressor COMMON DIMENSIONS PACKAGE VARIATIONS SYMBOL MIN. MAX. PKG. CODE N D2 E2 e JEDEC SPEC b [(N/2)-1] x e A 0.70 0.80 T633-2 6 1.500.10 2.300.10 0.95 BSC MO229 / WEEA 0.400.05 1.90 REF D 2.90 3.10 T833-2 8 1.500.10 2.300.10 0.65 BSC MO229 / WEEC 0.300.05 1.95 REF E 2.90 3.10 T833-3 8 1.500.10 2.300.10 0.65 BSC MO229 / WEEC 0.300.05 1.95 REF A1 0.00 0.05 T1033-1 10 1.500.10 2.300.10 0.50 BSC MO229 / WEED-3 0.250.05 2.00 REF L 0.20 0.40 T1033-2 10 1.500.10 2.300.10 0.50 BSC MO229 / WEED-3 0.250.05 2.00 REF k 0.25 MIN. T1433-1 14 1.700.10 2.300.10 0.40 BSC ---- 0.200.05 2.40 REF A2 0.20 REF. T1433-2 14 1.700.10 2.300.10 0.40 BSC ---- 0.200.05 2.40 REF 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 (c) 2004 Maxim Integrated Products is a registered trademark of Maxim Integrated Products.