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MAX4090AAXT+T

MAX4090AAXT+T

  • 厂商:

    AD(亚德诺)

  • 封装:

    SOT-363

  • 描述:

    IC VIDEO BUFFER SC70-6

  • 数据手册
  • 价格&库存
MAX4090AAXT+T 数据手册
MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current General Description The MAX4090 3V/5V, 6dB video buffer with sync-tip clamp, and low-power shutdown mode is available in tiny SOT23, SC70, and µDFN 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. The MAX4090 is available in tiny 6-pin SOT23, SC70, and µDFN packages and is specified over the extended (-40°C to +85°C) and automotive (-40°C to +125°C) temperature ranges. 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, SC70, and µDFN Packages Ordering Information PART TEMP RANGE PINPACKAGE MAX4090EXT-T -40°C to +85°C 6 SC70 ABM MAX4090EUT-T -40°C to +85°C 6 SOT23 ABOX MAX4090ELT-T -40°C to +85°C 6 µDFN AAI MAX4090AAXT-T -40°C to +125°C 6 SC70 MAX4090AAUT-T -40°C to +125°C 6 SOT23 ABWQ MAX4090AALT-T -40°C to +125°C 6 µDFN AAN ACW Portable Video/Game Systems/DVD Players Digital Camcorders/Televisions/Still Cameras PDAs Video-Enabled Cell Phones Notebook Computers Portable/Flat-Panel Displays Pin Configurations Block Diagram VCC TOP VIEW MAX4090 OUT 1 GND 2 MAX4090 IN 3 6 FB 5 SHDN 4 FB SHDN OUT 6 5 4 19-2813; Rev 5; 4/15 OUT 2.3kΩ MAX4090 1.2kΩ 1 SC70/SOT23 IN CLAMP VCC VCC 2 3 GND IN µDFN TOP MARK 580Ω FB 780Ω SHDN GND 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 6-Pin µDFN (derate 3.6mW/°C above +70°C).............290mW Operating Temperature Range MAX4090E...................................................... -40°C to +85°C MAX4090A..................................................... -40°C to +125°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, VGND = 0V, CIN = 0.1µF from IN to GND, RL = infinity to GND, FB shorted to OUT, VSHDN = 3.0V, TA = -40°C to +85°C (MAX4090E), TA = -40°C to +125°C (MAX4090A). 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 0.15 1 µA 0.38 0.47 V ISHDN VSHDN = 0V Input Clamp Voltage VCLP Input referred 0.27 Inferred from voltage gain (Note 3) VCLP Input Resistance Voltage Gain VIN = 1.45V 22.5 VCLP + 0.5V < VIN < VCLP + 1V 1.9 2 PSRR 2.7V < VCC < 5.5V 60 80 Output-Voltage High Swing VOH RL = 150W to GND VCC = 3V 2.55 2.7 VCC = 5V 4.3 4.6 Output-Voltage Low Swing VOL RL = 150W to GND Output Current IOUT Output Short-Circuit Current ISC SHDN Logic-Low Threshold VIL SHDN Logic-High Threshold VIH SHDN Input Current IIH Shutdown Output Impedance www.maximintegrated.com ROUT (Disabled) VCLP Sourcing, RL = 20W to GND 45 85 Sinking, RL = 20W to VCC 40 85 OUT shorted to VCC or GND V 35 µA 2.1 V/V MW dB V 0.47 V mA 110 mA VCC x 0.3 VCC x 0.7 V V 0.003 VSHDN = 0V mA 1.45 3 RL = 150W, 0.5V < VIN < 1.45V (Note 4) Power-Supply Rejection Ratio AV 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 kW Maxim Integrated │  2 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current AC Electrical Characteristics (VCC = 3.0V, VGND = 0V, FB shorted to OUT, CIN = 0.1µF, RIN = 75Ω to GND, RL = 150Ω to GND, VSHDN = 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 17 MHz Slew Rate SR VOUT = 2V step 275 V/µs Settling Time to 0.1% tS VOUT = 2V step 25 ns Power-Supply Rejection Ratio PSRR f = 100kHz 50 dB Output Impedance ZOUT f = 5MHz 2.5 W Differential Gain DG NTSC Differential Phase DP NTSC VCC = 3V 1 VCC = 5V 0.5 VCC = 3V 0.8 VCC = 5V 0.5 % Degrees Group Delay D/dT f = 3.58MHz or 4.43MHz 20 ns Peak Signal to RMS Noise SNR VIN = 1VP-P, 10MHz BW 65 dB CIN = 0.1µF (Note 4) 2 Droop 3 % SHDN Enable Time tON VIN = VCLP + 1V, VSHDN = 3V, VOUT settled to within 1% of the final voltage 250 ns SHDN Disable Time tOFF VIN = VCLP + 1V, VSHDN = 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. www.maximintegrated.com Maxim Integrated │  3 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current 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.) 2 1 0.2 0.1 -2 -0.3 -0.4 AV = 2 VCC = 3V VOUT = 100mVP-P 1M 10M -0.6 100M -6 100M 2 1 -0.3 10M 0.2 0.1 GAIN (dB) 0 -1 -2 -4 AV = 2 VCC = 5V VOUT = 100mVP-P 1M -5 10M -6 100M 100M 0.3 -3 -0.1 -0.2 -0.3 -0.4 AV = 2 VCC = 3V VOUT = 2VP-P 100k 1M -0.5 10M -0.6 100M AV = 2 VCC = 3V VOUT = 2VP-P 100k 1M 10M 100M 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 -10 -2 -3 PSRR (dB) -1 -0.1 -0.2 -0.3 -0.4 AV = 2 VCC = 5V VOUT = 2VP-P 1M -0.5 10M FREQUENCY (Hz) www.maximintegrated.com 100M -0.6 1M -30 -40 -50 -60 AV = 2 VCC = 5V VOUT = 2VP-P 100k VCC = 3V -20 0 GAIN (dB) 0 0 MAX4090 toc08 0.3 MAX4090 toc07 2 MAX4090 toc09 FREQUENCY (Hz) 3 100k 1M MAX4090 toc06 MAX4090 toc04 3 0 100k 100k LARGE-SIGNAL GAIN FLATNESS vs. FREQUENCY GAIN (dB) GAIN (dB) 10M LARGE-SIGNAL GAIN vs. FREQUENCY -0.2 -6 1M AV = 2 VCC = 5V VOUT = 100mVP-P SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY -0.1 -5 100k -5 FREQUENCY (Hz) 0 -4 -4 AV = 2 VCC = 3V VOUT = 100mVP-P FREQUENCY (Hz) 0.1 -0.6 -2 FREQUENCY (Hz) 0.2 -0.4 -1 -3 MAX4090 toc05 100k -0.5 0.3 GAIN (dB) -0.2 -4 -0.5 0 -0.1 -3 -6 1 GAIN (dB) -1 -5 2 0 GAIN (dB) GAIN (dB) 0 3 MAX4090 toc02 0.3 MAX4090 toc01 3 SMALL-SIGNAL GAIN vs. FREQUENCY SMALL-SIGNAL GAIN FLATNESS vs. FREQUENCY MAX4090 toc03 SMALL-SIGNAL GAIN vs. FREQUENCY -70 10M FREQUENCY (Hz) 100M -80 10k 100k 1M 10M 100M FREQUENCY (Hz) Maxim Integrated │  4 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current 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.) 6.7 -30 -40 -50 -60 0.50 6.6 VCC = 5V 6.5 6.4 6.3 VCC = 3V 100k 1M 6.1 100M 10M 0.35 0.25 -40 -20 0 20 40 60 0.20 80 100 120 140 -40 -20 TEMPERATURE (°C) FREQUENCY (Hz) 2.05 2.00 1.95 3.0 2.9 OUTPUT-VOLTAGE HIGH (V) MAX4090 toc13 2.10 0 20 40 60 80 100 120 140 TEMPERATURE (°C) VOLTAGE GAIN vs. TEMPERATURE GAIN (V/V) 0.40 OUTPUT-VOLTAGE HIGH SWING vs. TEMPERATURE MAX4090 toc14 10k 0.45 0.30 6.2 -70 -80 0.55 VCLAMP (V) SUPPLY CURRENT (mA) PSRR (dB) -20 CLAMP VOLTAGE vs. TEMPERATURE 0.60 MAX4090 toc11 VCC = 5V -10 6.8 MAX4090 toc10 0 QUIESCENT SUPPLY CURRENT vs. TEMPERATURE MAX4090 toc12 POWER-SUPPLY REJECTION RATIO vs. FREQUENCY VCC = 3V 2.8 2.7 2.6 2.5 2.4 2.3 2.2 2.1 -40 -20 5.0 20 40 60 80 100 120 140 2.0 -40 -20 0 20 40 60 80 100 120 140 TEMPERATURE (°C) TEMPERATURE (°C) OUTPUT-VOLTAGE HIGH SWING vs. TEMPERATURE LARGE-SIGNAL PULSE RESPONSE VCC = 5V 4.9 OUTPUT-VOLTAGE HIGH (V) 0 MAX4090 toc16 MAX4090 toc15 1.90 4.8 4.7 VIN 500mV/div 4.6 4.5 4.4 4.3 VOUT 1V/div 4.2 4.1 4.0 -40 -20 0 20 40 60 80 100 120 140 10ns/div TEMPERATURE (°C) www.maximintegrated.com Maxim Integrated │  5 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current 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 VIN 25mV/div 2.0 MAX4090 toc18 DIFFERENTIAL GAIN (%) MAX4090 toc17 1.0 0 -1.0 -2.0 0 1 2 3 4 5 6 0 1 2 3 4 5 6 DIFFERENTIAL PHASE () 1.0 VOUT 50mV/div 10ns/div Pin Description 0.5 0 -0.5 -1.0 Typical Application Circuit PIN NAME FUNCTION SOT23/ SC70 µDFN 1 4 OUT Video Output 2 2 GND Ground 3 3 IN 4 1 VCC 5 5 SHDN 6 6 FB www.maximintegrated.com VCC MAX4090 IN Video Input Power-Supply Voltage. Bypass with a 0.1µF capacitor to ground as close to pin as possible. OUT RIN RL CLAMP FB Shutdown. Pull SHDN low to place the MAX4090 in lowpower shutdown mode. Feedback. Connect to OUT. SHDN GND Maxim Integrated │  6 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Detailed Description 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. 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 = 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. www.maximintegrated.com 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 ( 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. Maxim Integrated │  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: 0 -10 GAIN (dB) -20 -30 -40 -50 -60 0.1 1 10 ●● Do not use wire-wrap boards; they are too inductive. 100 ●● Do not use IC sockets; they increase parasitic capacitance and inductance. FREQUENCY (MHz) Figure 5. Frequency Response for R1 = R2 = 150W ●● 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. VCC 3-POLE RECONSTRUCTION LPF C3 6.8pF VIDEO CURRENT DAC C7 1µF L1 4.7µH RIS 49.9Ω C4 0.1µF IN R1 150Ω C1 120pF C2 120pF C5 22µF VCC R2 150Ω OUT GND VOUT C6 22µF MAX4090 SHDN R3 75Ω FB VCC Figure 6. Sag Correction Configuration www.maximintegrated.com Maxim Integrated │  10 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current VCC = 2.7V TO 5.5V VCC CIN 0.1µF RSOURCE 75Ω MAX4090 SHDN IN ROUT 75Ω OUT RIN 75Ω ESIGNAL CBYP 0.1µF EOUT RL 75Ω CLAMP FB GND Figure 7. Typical Operating Circuit VCC = 2.7V TO 5.5V VCC RSOURCE 75Ω ESIGNAL RIN 75Ω CIN 0.1µF MAX4090 CBYP 0.1µF SHDN IN OUT ROUT 75Ω 330µF EOUT RL 75Ω CLAMP FB GND Figure 8. AC-Coupled Output Circuit Chip Information TRANSISTOR COUNT: 755 PROCESS: BiCMOS www.maximintegrated.com Maxim Integrated │  11 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Package Information For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. PACKAGE TYPE PACKAGE CODE DOCUMENT NO. 6 SOT23 U6F-6 21-0058 6 μDFN L622-1 21-0164 6 SC70 X6SN-1 21-0077 www.maximintegrated.com Maxim Integrated │  12 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. www.maximintegrated.com Maxim Integrated │  13 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. www.maximintegrated.com Maxim Integrated │  14 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. www.maximintegrated.com Maxim Integrated │  15 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Package Information (continued) For the latest package outline information and land patterns (footprints), go to www.maximintegrated.com/packages. Note that a “+”, “#”, or “-” in the package code indicates RoHS status only. Package drawings may show a different suffix character, but the drawing pertains to the package regardless of RoHS status. www.maximintegrated.com Maxim Integrated │  16 MAX4090 3V/5V, 6dB Video Buffer with Sync-Tip Clamp and 150nA Shutdown Current Revision History REVISION NUMBER REVISION DATE 4 11/09 Added automotive part 1 5 4/15 Removed automotive product and reference 1 DESCRIPTION PAGES CHANGED For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com. Maxim Integrated cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim Integrated product. No circuit patent licenses are implied. Maxim Integrated reserves the right to change the circuitry and specifications without notice at any time. The parametric values (min and max limits) shown in the Electrical Characteristics table are guaranteed. Other parametric values quoted in this data sheet are provided for guidance. Maxim Integrated and the Maxim Integrated logo are trademarks of Maxim Integrated Products, Inc. © 2015 Maxim Integrated Products, Inc. │ 17
MAX4090AAXT+T 价格&库存

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