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5962-9312901M2A Datasheet(PDF) 1 Page - Analog Devices |
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5962-9312901M2A Datasheet(HTML) 1 Page - Analog Devices |
1 / 20 page High Speed, Low Noise Video Op Amp Data Sheet AD829 Rev. I Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibilityisassumedbyAnalogDevicesforitsuse,norforanyinfringementsofpatentsorother rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2011 Analog Devices, Inc. All rights reserved. FEATURES High speed 120 MHz bandwidth, gain = −1 230 V/µs slew rate 90 ns settling time to 0.1% Ideal for video applications 0.02% differential gain 0.04° differential phase Low noise 1.7 nV/√Hz input voltage noise 1.5 pA/√Hz input current noise Excellent dc precision 1 mV maximum input offset voltage (over temperature) 0.3 µV/°C input offset drift Flexible operation Specified for ±5 V to ±15 V operation ±3 V output swing into a 150 Ω load External compensation for gains 1 to 20 5 mA supply current Available in tape and reel in accordance with EIA-481A standard GENERAL DESCRIPTION The is a low noise (1.7 nV/√Hz), high speed op amp with custom compensation that provides the user with gains of 1 to 20 while maintaining a bandwidth >50 MHz. Its 0.04° differential phase and 0.02% differential gain performance at 3.58 MHz and 4.43 MHz, driving reverse-terminated 50 Ω or 75 Ω cables, makes it ideally suited for professional video applications. The AD829 achieves its 230 V/µs uncompensated slew rate and 750 MHz gain bandwidth while requiring only 5 mA of current from power supplies. The external compensation pin of the AD829 gives it exceptional versatility. For example, compensation can be selected to optimize the bandwidth for a given load and power supply voltage. As a gain-of-2 line driver, the −3 dB bandwidth can be increased to 95 MHz at the expense of 1 dB of peaking. Its output can also be clamped at its external compensation pin. The AD829 exhibits excellent dc performance. It offers a minimum open-loop gain of 30 V/mV into loads as low as 500 Ω, a low input voltage noise of 1.7 nV/√Hz, and a low input offset voltage of 1 mV maximum. Common-mode rejection and power supply rejection ratios are both 120 dB. This op amp is also useful in multichannel, high speed data conversion where its fast (90 ns to 0.1%) settling time is important. In such applications, the AD829 serves as an input buffer for 8-bit to 10-bit ADCs and as an output I/V converter for high speed DACs. CONNECTION DIAGRAM Figure 1. 8-Lead PDIP (N), CERDIP (Q), and SOIC (R) Figure 2. 20-Terminal LCC Operating as a traditional voltage feedback amplifier, the AD829 provides many of the advantages that a transimpedance amplifier offer. A bandwidth >50 MHz can be maintained for a range of gains through the replacement of the external compensation capacitor. The AD829 and the transimpedance amplifier are both unity-gain stable and provide similar voltage noise performance (1.7 nV/√Hz); however, the current noise of the AD829 (1.5 pA/√Hz) is less than 10% of the noise of transimpedance amplifiers. The inputs of the AD829 are symmetrical. PRODUCT HIGHLIGHTS 1. The input voltage noise of 2 nV/√Hz, current noise of 1.5 pA/√Hz, and 50 MHz bandwidth for gains of 1 to 20 make the AD829 an ideal preamp. 2. A differential phase error of 0.04 and a 0.02% differential gain error, at the 3.58 MHz NTSC, 4.43 MHz PAL, and SECAM color subcarrier frequencies, make the op amp an outstanding video performer for driving reverse-terminated 50 Ω and 75 Ω cables to ±1 V (at their terminated end). 3. The AD829 can drive heavy capacitive loads. 4. Performance is fully specified for operation from ±5 V to ±15 V supplies. 5. The AD829 is available in PDIP, CERDIP, and small outline packages. Chips and MIL-STD-883B parts are also available. The 8-lead SOIC is available for the extended temperature range (−40°C to +125°C). AD829 TOP VIEW (Not to Scale) OFFSET NULL 1 –IN 2 +IN 3 –VS 4 OFFSET NULL +VS OUTPUT CCOMP 8 7 6 5 20 19 1 2 3 18 14 15 16 17 4 5 6 7 8 9 10 11 12 13 NC +V NC OUTPUT NC NC = NO CONNECT NC –IN NC +IN NC AD829 TOP VIEW (Not to Scale) |
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