19-2813; Rev 2; 8/04 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp, and low-power shutdown mode is available in tiny SOT23 and SC70 packages. The MAX4090 is designed to drive DC-coupled, 150Ω back-terminated video loads in portable video applications such as digital still cams, portable DVD players, digital camcorders, PDAs, video-enabled cell phones, portable game systems, and notebook computers. The input clamp positions the video waveform at the output and allows the MAX4090 to be used as a DC-coupled output driver. The MAX4090 operates from a single 2.7V to 5.5V supply and consumes only 6.5mA of supply current. The low-power shutdown mode reduces the supply current to 150nA, making the MAX4090 ideal for low-voltage, battery-powered video applications. Features ♦ Single-Supply Operation from 2.7V to 5.5V ♦ Input Sync-Tip Clamp ♦ DC-Coupled Output ♦ Low-Power Shutdown Mode Reduces Supply Current to 150nA ♦ Available in Space-Saving SOT23 and SC70 Packages The MAX4090 is available in tiny 6-pin SOT23 and SC70 packages and is specified over the extended -40°C to +85°C temperature range. Applications Ordering Information Portable Video/Game Systems/DVD Players Digital Camcorders/Televisions/Still Cameras PART TEMP RANGE PINPACKAGE TOP MARK PDAs MAX4090EXT-T -40°C to +85°C 6 SC70-6 ABM Video-Enabled Cell Phones MAX4090EUT-T -40°C to +85°C 6 SOT23-6 ABOX Notebook Computers Portable/Flat-Panel Displays Block Diagram Pin Configuration TOP VIEW VCC TOP VIEW MAX4090 OUT 1 6 FB IN OUT GND 2 MAX4090 5 SHDN 4 VCC 2.3kΩ CLAMP FB IN 3 580Ω 780Ω 1.2kΩ SC70/SOT23 SHDN GND ________________________________________________________________ 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 MAX4090 General Description MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current ABSOLUTE MAXIMUM RATINGS VCC to GND ............................................................. -0.3V to +6V OUT, FB, SHDN to GND............................ -0.3V to (VCC + 0.3V) IN to GND (Note 1) ................................... VCLP to (VCC + 0.3V) IN Short-Circuit Duration from -0.3V to VCLP ........................1min Output Short-Circuit Duration to VCC or GND .......... Continuous Continuous Power Dissipation (TA = +70°C) 6-Pin SOT23 (derate 8.7mW/°C above +70°C) ...........695mW 6-Pin SC70 (derate 3.1mW/°C above +70°C) .............245mW Operating Temperature Range ..........................-40°C to +85°C Junction Temperature .....................................................+150°C Storage Temperature Range ............................-65°C to +150°C Lead Temperature (soldering, 10s) ................................+300°C Note 1: VCLP is the input clamp voltage as defined in the DC Electrical Characteristics table. 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 = 3.0V, GND = 0V, CIN = 0.1µF from IN to GND, RL = infinity to GND, FB shorted to OUT, SHDN = 3.0V, TA = -40°C to +85°C. Typical values are at TA = +25°C, unless otherwise noted.) (Note 2) PARAMETER Supply Voltage Range SYMBOL VCC CONDITIONS Guaranteed by PSRR MIN 2.7 6.5 10 ISHDN SHDN = 0V Input Clamp Voltage VCLP Input referred 0.27 Inferred from voltage gain (Note 3) VCLP Input Resistance Voltage Gain Power-Supply Rejection Ratio VIN = 1.45V AV 2 80 VCC = 3V 2.55 2.7 VCC = 5V 4.3 4.6 VOL RL = 150Ω to GND ISC SHDN Logic-Low Threshold VIL SHDN Logic-High Threshold VIH SHDN Input Current IIH Shutdown Output Impedance 2 ROUT (Disabled) 1.45 V 35 µA 3 60 Output Voltage Low Swing Output Short-Circuit Current V 1.9 RL = 150Ω to GND IOUT µA 0.47 RL = 150Ω, 0.5V < VIN < 1.45V (Note 4) VOH Output Current 1 0.38 2.7V < VCC < 5.5V Output Voltage High Swing VCLP Sourcing, RL = 20Ω to GND 45 85 Sinking, RL = 20Ω to VCC 40 85 OUT shorted to VCC or GND MΩ 2.1 V/V dB V 0.47 V mA 110 mA VCC x 0.3 VCC x 0.7 V V 0.003 SHDN = 0V mA 0.15 22.5 VCLP + 0.5V < VIN < VCLP + 1V PSRR V VCC = 5V Shutdown Supply Current VIN 5.5 10 VIN = VCLP IBIAS UNITS 6.5 ICC Input Bias Current MAX VCC = 3V Quiescent Supply Current Input Voltage Range TYP At DC 4 At 3.58MHz or 4.43MHz 2 _______________________________________________________________________________________ 1 µA kΩ 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current (VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1µF, RIN = 75Ω to GND, RL = 150Ω to GND, SHDN = VCC, TA = +25°C, unless otherwise noted.) PARAMETER Small-Signal -3dB Bandwidth Large-Signal -3dB Bandwidth SYMBOL CONDITIONS MIN TYP MAX UNITS BWSS VOUT = 100mVP-P 55 MHz BWLS VOUT = 2VP-P 45 MHz Small-Signal 0.1dB Gain Flatness BW0.1dBSS VOUT = 100mVP-P 25 MHz Large-Signal 0.1dB Gain Flatness BW0.1dBLS VOUT = 2VP-P SR VOUT = 2V step 17 MHz 275 V/µs Slew Rate Settling Time to 0.1% tS VOUT = 2V step 25 ns 50 dB 2.5 Ω Power-Supply Rejection Ratio PSRR f = 100kHz Output Impedance ZOUT f = 5MHz Differential Gain DG NTSC Differential Phase DP NTSC VCC = 3V 1 VCC = 5V 0.5 VCC = 3V 0.8 VCC = 5V 0.5 Group Delay D/dT f = 3.58MHz or 4.43MHz 20 Peak Signal to RMS Noise SNR VIN = 1VP-P, 10MHz BW 65 CIN = 0.1µF (Note 4) 2 Droop % Degrees ns dB 3 % SHDN Enable Time tON VIN = VCLP + 1V, SHDN = 3V, VOUT settled to within 1% of the final voltage 250 ns SHDN Disable Time tOFF VIN = VCLP + 1V, SHDN = 0V, VOUT settled to below 1% of the output voltage 50 ns Note 2: All devices are 100% production tested at TA = +25°C. Specifications over temperature limits are guaranteed by design. Note 3: Voltage gain (AV) is referenced to the clamp voltage, i.e., an input voltage of VIN = VCLP + VI would produce an output voltage of VOUT = VCLP + AV x VI. Note 4: Droop is guaranteed by the Input Bias Current specification. _______________________________________________________________________________________ 3 MAX4090 AC ELECTRICAL CHARACTERISTICS Typical Operating Characteristics (VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1µF, RIN = 75Ω to GND, RL = 150Ω to GND, SHDN = VCC, TA = +25°C, unless otherwise noted.) SMALL-SIGNAL GAIN vs. FREQUENCY SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY 1 0.2 0.1 -2 -0.3 -0.4 100k 1M -0.5 -0.6 10M 100M 100k 100M 100k 1 0.2 0.1 -0.4 -4 100k 1M -5 -6 10M GAIN (dB) -2 -3 AV = 2 VCC = 5V VOUT = 100mVP-P 0 -1 -0.3 100M 100M 10M MAX4090 toc06 2 0 -0.1 -0.2 -0.3 -0.4 AV = 2 VCC = 3V VOUT = 2VP-P 100k -0.5 -0.6 1M 10M 100M AV = 2 VCC = 3V VOUT = 2VP-P 100k 1M 100M 10M FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) LARGE-SIGNAL GAIN vs. FREQUENCY LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 1 0.2 0.1 VCC = 3V -10 -20 -1 -2 -3 PSRR (dB) 0 GAIN (dB) 0 0 -0.1 -0.2 -0.4 -0.5 -0.6 1M 10M FREQUENCY (Hz) 100M -30 -40 -50 -0.3 AV = 2 VCC = 5V VOUT = 2VP-P MAX4090 toc09 2 MAX4090 toc08 0.3 MAX4090 toc07 3 100k 1M 0.3 MAX4090 toc05 MAX4090 toc04 3 GAIN (dB) GAIN (dB) -6 10M AV = 2 VCC = 5V VOUT = 100mVP-P LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY -0.2 -6 1M -5 LARGE-SIGNAL GAIN vs. FREQUENCY 0 -5 -4 AV = 2 VCC = 3V VOUT = 100mVP-P SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY -0.1 -4 -3 FREQUENCY (Hz) 0.1 -0.6 -2 FREQUENCY (Hz) 0.2 -0.5 -1 FREQUENCY (Hz) 0.3 4 -0.2 -4 AV = 2 VCC = 3V VOUT = 100mVP-P 0 -0.1 -3 -6 1 GAIN (dB) -1 -5 2 0 GAIN (dB) GAIN (dB) 0 3 MAX4090 toc03 2 SMALL-SIGNAL GAIN vs. FREQUENCY MAX4090 toc02 0.3 MAX4090 toc01 3 GAIN (dB) MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current -60 AV = 2 VCC = 5V VOUT = 2VP-P 100k -70 -80 1M 10M FREQUENCY (Hz) 100M 10k 100k 1M FREQUENCY (Hz) _______________________________________________________________________________________ 10M 100M 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current (VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1µF, RIN = 75Ω to GND, RL = 150Ω to GND, SHDN = VCC, TA = +25°C, unless otherwise noted.) 6.75 6.70 -40 -50 -60 0.50 6.65 VCC = 5V 6.60 6.55 6.50 0.30 6.40 -70 0.25 6.35 -80 6.30 100k 1M 100M 10M 0.20 -50 -25 FREQUENCY (Hz) 25 50 75 100 -50 -25 TEMPERATURE (°C) CLAMP VOLTAGE vs. TEMPERATURE 2.10 MAX4090 toc13 VCC = 5V 0.55 VCC = 3V 0.40 50 75 100 VOLTAGE GAIN vs. TEMPERATURE VCC = 5V 2.05 GAIN (V/V) GAIN (V/V) 0.45 25 2.10 2.05 0.50 0 TEMPERATURE (°C) VOLTAGE GAIN vs. TEMPERATURE 0.60 VCLAMP (V) 0 MAX4090 toc14 10k 0.40 0.35 VCC = 3V 6.45 0.45 MAX4090 toc15 -30 VCC = 3V 0.55 VCLAMP (V) SUPPLY CURRENT (mA) PSRR (dB) -20 0.60 MAX4090 toc11 VCC = 5V -10 6.80 MAX4090 toc10 0 CLAMP VOLTAGE vs. TEMPERATURE QUIESCENT SUPPLY CURRENT vs. TEMPERATURE MAX4090 toc12 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY 2.00 2.00 0.35 1.95 0.30 1.95 0.25 1.90 0.20 -25 0 25 50 75 0 25 50 75 100 -50 -25 0 25 50 75 TEMPERATURE (°C) TEMPERATURE (°C) OUTPUT VOLTAGE HIGH SWING vs. TEMPERATURE OUTPUT VOLTAGE HIGH SWING vs. TEMPERATURE LARGE-SIGNAL PULSE RESPONSE VCC = 3V 2.8 2.7 2.6 2.5 2.4 2.3 100 MAX4090 toc18 5.0 MAX4090 toc17 MAX4090 toc16 OUTPUT VOLTAGE HIGH (V) -25 TEMPERATURE (°C) 3.0 2.9 1.90 -50 100 VCC = 5V 4.9 OUTPUT VOLTAGE HIGH (V) -50 4.8 VIN 500mV/div 4.7 4.6 4.5 4.4 4.3 2.2 4.2 2.1 4.1 VOUT 1V/div 4.0 2.0 -50 -25 0 25 50 TEMPERATURE (°C) 75 100 -50 -25 0 25 50 75 100 10ns/div TEMPERATURE (°C) _______________________________________________________________________________________ 5 MAX4090 Typical Operating Characteristics (continued) Typical Operating Characteristics (continued) (VCC = 3.0V, GND = 0V, FB shorted to OUT, CIN = 0.1µF, RIN = 75Ω to GND, RL = 150Ω to GND, SHDN = VCC, TA = +25°C, unless otherwise noted.) SMALL-SIGNAL PULSE RESPONSE DIFFERENTIAL GAIN AND PHASE MAX4090 toc19 VIN 25mV/div MAX4090 toc20 DIFFERENTIAL GAIN (%) 2.0 1.0 0 -1.0 -2.0 0 1 2 3 4 5 6 0 1 2 3 4 5 6 1.0 DIFFERENTIAL PHASE (°) MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current VOUT 50mV/div 0.5 0 -0.5 -1.0 10ns/div Typical Application Circuit Pin Description PIN NAME FUNCTION 1 OUT Video Output 2 GND Ground 3 IN 4 VCC 5 SHDN 6 FB VCC Video Input Power-Supply Voltage. Bypass with a 0.1µF capacitor to ground as close to pin as possible. Shutdown. Pull SHDN low to place the MAX4090 in low-power shutdown mode. MAX4090 IN OUT RIN RL CLAMP Feedback. Connect to OUT. FB SHDN GND 6 _______________________________________________________________________________________ 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp and low-power shutdown mode is available in tiny SOT23 and SC70 packages. The MAX4090 is designed to drive DC-coupled, 150Ω back-terminated video loads in portable video applications such as digital still cams, portable DVD players, digital camcorders, PDAs, videoenabled cell phones, portable game systems, and notebook computers. The input clamp positions the video waveform at the output and allows the MAX4090 to be used as a DC-coupled output driver. The MAX4090 operates from a single 2.7V to 5.5V supply and consumes only 6.5mA of supply current. The low-power shutdown mode reduces the supply current to 150nA, making the MAX4090 ideal for low-voltage, battery-powered video applications. The input signal to the MAX4090 is AC-coupled through a capacitor into an active sync-tip clamp circuit, which places the minimum of the video signal at approximately 0.38V. The output buffer amplifies the video signal while still maintaining the 0.38V clamp voltage at the output. For example, if VIN = 0.38V, then VOUT = 0.38V. If VIN = (0.38V + 1V) = 1.38V, then VOUT = (0.38V + 2 X (1V)) = 2.38V. The net result is that a 2V video output signal swings within the usable output voltage range of the output buffer when VCC = 3V. Shutdown Mode The MAX4090 features a low-power shutdown mode (ISHDN = 150nA) for battery-powered/portable applications. Pulling the SHDN pin high enables the output. Connecting the SHDN pin to ground (GND) disables the output and places the MAX4090 into a low-power shutdown mode. Applications Information Input Coupling the MAX4090 The MAX4090 input must be AC-coupled because the input capacitor stores the clamp voltage. The MAX4090 requires a typical value of 0.1µF for the input clamp to meet the Line Droop specification. A minimum of a ceramic capacitor with an X7R temperature coefficient is recommended to avoid temperature-related problems with Line Droop. For extended temperature operation, such as outdoor applications, or where the impressed voltage is close to the rated voltage of the capacitor, a film dielectric is recommended. Increasing the capacitor value slows the clamp capture time. Values above 0.5µF should be avoided since they do not improve the clamp’s performance. The active sync-tip clamp also requires that the input impedance seen by the input capacitor be less than 100Ω typically to function properly. This is easily met by the 75Ω input resistor prior to the input-coupling capacitor and the back termination from a prior stage. Insufficient input resistance to ground causes the MAX4090 to appear to oscillate. Never operate the MAX4090 in this mode. Using the MAX4090 with the Reconstruction Filter In most video applications, the video signal generated from the DAC requires a reconstruction filter to smooth out the signal and attenuate the sampling aliases. The MAX4090 is a direct DC-coupled output driver, which can be used after the reconstruction filter to drive the video signal. The driving load from the video DAC can be varied from 75Ω to 300Ω. A low input impedance (<100Ω) is required by the MAX4090 in normal operation, special care must be taken when a reconstruction filter is used in front of the MAX4090. For standard video signal, the video passband is about 6MHz and the system oversampling frequency is at 27MHz. Normally, a 9MHz BW lowpass filter can be used for the reconstruction filter. This section demonstrates the methods to build simple 2nd- and 3rd-order passive butterworth lowpass filters at the 9MHz cutoff frequency and the techniques to use them with the MAX4090 (Figures 1 and 4). 2nd-Order Butterworth Lowpass Filter Realization Table 1 shows the normalized 2nd-order butterworth LPF component values at 1rad/s with a source/load impedance of 1Ω. With the following equations, the L and C can be calculated for the cutoff frequency at 9MHz. Table 2 shows the appropriated L and C values for different source/ load impedance, the bench measurement values for the -3dB BW and attenuation at 27MHz. There is approximately 20dB attenuation at 27MHz, which effectively attenuates the sampling aliases. The MAX4090 requires low input impedance for stable operation and it does not like the reactive input impedance. For R1/R2 greater than 100Ω, a series resistor R IS (Figure 1) Table 1. 2nd Order Butterworth Lowpass Filter Normalized Values Rn1 = Rn2 (Ω) Cn1 (F) Ln1 (H) 1 1.414 1.414 _______________________________________________________________________________________ 7 MAX4090 Detailed Description 3rd-Order Butterworth Lowpass Filter Realization If more flat passband and more stopband attenuation are needed, a 3rd-order LPF can be used. The design procedures are similar to the 2nd-order butterworth LPF. Table 3 shows the normalized 3rd-order butterworth lowpass filter with the cutoff frequency at 1 rad/s and the stopband frequency at 3 rad/s. Table 4 shows the appropriated L and C values for different source/load impedance and the bench measurement values for -3dB BW and attenuation at 27MHz. The attenuation is over 40dB at 27MHz. At 6MHz, the attenuation is approximately 0.6dB for R1 = R2 = 150Ω (Figure 5). between 20Ω to 100Ω is needed to isolate the input capacitor (C4) to the filter to prevent the oscillation problem. C= Cn L R L= n L 2πfCRL 2πfC Figure 2 shows the frequency response for R1 = R2 = 150Ω. At 6MHz, the attenuation is about 1.4dB. The attenuation at 27MHz is about 20dB. Figure 3 shows the multiburst response for R1 = R2 = 150Ω. VCC C7 1µF 2-POLE RECONSTRUCTION LPF 4 RIS 49.9Ω L1 3.9µH VIDEO CURRENT DAC C1 150pF R1 150Ω C4 0.1µF VCC 3 IN OUT 1 R3 75Ω MAX4090 R2 150Ω 5 FB SHDN 6 GND VCC 2 Figure 1. 2nd-Order Butterworth LPF with MAX4090 FREQUENCY RESPONSE 0 -10 VIN 500mV/div -20 GAIN (dB) MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current -30 VOUT 500mV/div -40 -50 -60 0.1 1 10 100 10µs/div FREQUENCY (MHz) Figure 2. Frequency Response 8 Figure 3. Multiburst Response _______________________________________________________________________________________ VOUT 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090 VCC 3-POLE RECONSTRUCTION LPF C3 6.8pF C7 1µF 4 RIS 49.9Ω L1 4.7µH VIDEO CURRENT DAC R1 150Ω C1 120pF C4 0.1µF VCC 3 C2 120pF R2 150Ω IN OUT 1 R3 75Ω VOUT MAX4090 5 FB SHDN 6 GND 2 VCC Figure 4. 3rd-Order Butterworth LPF with MAX4090 Table 2. Bench Measurement Values R1 = R2 (Ω) C1 (p f) L1 (µH) RIS (Ω) 3dB BW (MHz) 75 330 1.8 0 8.7 20 150 150 3.9 50 9.0 20 200 120 4.7 50 9.3 22 300 82 8.2 100 8.7 20 Table 3. 3rd-Order Butterworth Lowpass Filter Normalized Values ATTENUATION AT 27MHz (dB) Rn1 = Rn2 (Ω) Cn1 (F) Cn2 (F) Cn3 (F) Ln1 (H) 1 0.923 0.923 0.06 1.846 Table 4. Bench Measurement Values R1 = R2 (Ω) C1 (pF) C2 (pF) C3 (pF) L (µH) RIS (Ω) 3dB BW (MHz) ATTENUATION AT 27MHz (dB) 75 220 220 15.0 2.2 0 9.3 43 150 120 120 6.8 4.7 50 8.9 50 300 56 56 3.3 10.0 100 9.0 45 Sag Correction In a 5V application, the MAX4090 can use the sag configuration if an AC-coupled output video signal is required. Sag correction refers to the low-frequency compensation for the highpass filter formed by the 150Ω load and the output capacitor. In video applications, the cutoff frequency must be low enough to pass the vertical sync interval to avoid field tilt. This cutoff frequency should be less than 5Hz, and the coupling capacitor must be very large in normal configuration, typically > 220µF. In sag configuration, the MAX4090 eliminates the need for large coupling capacitors, and instead requires two 22µF capacitors (Figure 6) to reach the same performance as the large capacitor. Bench experiments show that increasing the output coupling capacitor C5 beyond 47µF does not improve the performance. If the supply voltage is less than 4.5V, the sag correction is not recommended for the MAX4090. _______________________________________________________________________________________ 9 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Layout and Power-Supply Bypassing FREQUENCY RESPONSE The MAX4090 operates from single 2.7V to 5.5V supply. Bypass the supply with a 0.1µF 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 device’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. 0 -10 GAIN (dB) -20 -30 -40 -50 -60 0.1 1 10 100 FREQUENCY (MHz) • 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. Figure 5. Frequency Response for R1 = R2 = 150Ω • Keep signal lines as short and as straight as possible. Do not make 90° turns; round all corners. VCC 3-POLE RECONSTRUCTION LPF C3 6.8pF C7 1µF 4 L1 4.7µH VIDEO CURRENT DAC R1 150Ω C1 120pF C2 120pF RIS 49.9Ω C4 0.1µF VCC 3 IN R2 150Ω OUT 1 C6 22µF MAX4090 5 FB SHDN C5 22µF 6 GND 2 VCC Figure 6. Sag Correction Configuration 10 ______________________________________________________________________________________ R3 75Ω VOUT 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current MAX4090 VCC = 2.7V TO 5.5V VCC CBYP 0.1µF ESIGNAL SHDN MAX4090 CIN 0.1µF RSOURCE 75Ω IN OUT RIN 75Ω ROUT 75Ω EOUT RL 75Ω CLAMP FB GND Figure 7. Typical Operating Circuit Chip Information TRANSISTOR COUNT: 755 PROCESS: BiCMOS ______________________________________________________________________________________ 11 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.) 6LSOT.EPS MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current PACKAGE OUTLINE, SOT-23, 6L 21-0058 F 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. 12 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 © 2004 Maxim Integrated Products Printed USA is a registered trademark of Maxim Integrated Products.