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AD844SCHIPS Folha de dados(PDF) 1 Page - Analog Devices |
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AD844SCHIPS Folha de dados(HTML) 1 Page - Analog Devices |
1 / 12 page REV. C Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. a 60 MHz, 2000 V/ s Monolithic Op Amp AD844 One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 617/329-4700 Fax: 617/326-8703 CONNECTION DIAGRAMS FEATURES Wide Bandwidth: 60 MHz at Gain of –1 Wide Bandwidth: 33 MHz at Gain of –10 Very High Output Slew Rate: Up to 2000 V/ s 20 MHz Full Power Bandwidth, 20 V pk-pk, RL = 500 Fast Settling: 100 ns to 0.1% (10 V Step) Differential Gain Error: 0.03% at 4.4 MHz Differential Phase Error: 0.15 at 4.4 MHz High Output Drive: 50 mA into 50 Ω Load Low Offset Voltage: 150 V max (B Grade) Low Quiescent Current: 6.5 mA Available in Tape and Reel in Accordance with EIA-481A Standard APPLICATIONS Flash ADC Input Amplifiers High Speed Current DAC Interfaces Video Buffers and Cable Drivers Pulse Amplifiers PRODUCT DESCRIPTION The AD844 is a high speed monolithic operational amplifier fab- ricated using Analog Devices’ junction isolated complementary bipolar (CB) process. It combines high bandwidth and very fast large signal response with excellent dc performance. Although optimized for use in current to voltage applications and as an inverting mode amplifier, it is also suitable for use in many non- inverting applications. The AD844 can be used in place of traditional op amps, but its current feedback architecture results in much better ac perfor- mance, high linearity and an exceptionally clean pulse response. This type of op amp provides a closed-loop bandwidth which is determined primarily by the feedback resistor and is almost in- dependent of the closed-loop gain. The AD844 is free from the slew rate limitations inherent in traditional op amps and other current-feedback op amps. Peak output rate of change can be over 2000 V/ µs for a full 20 V output step. Settling time is typi- cally 100 ns to 0.1%, and essentially independent of gain. The AD844 can drive 50 Ω loads to ±2.5 V with low distortion and is short circuit protected to 80 mA. The AD844 is available in four performance grades and three package options. In the 16-pin SOIC (R) package, the AD844J is specified for the commercial temperature range of 0 °C to +70 °C. The AD844A and AD844B are specified for the indus- trial temperature range of –40 °C to +85°C and are available in the cerdip (Q) package. The AD844A is also available in an 8-pin plastic mini-DIP (N). The AD844S is specified over the military temperature range of –55 °C to +125°C. It is available in the 8-pin cerdip (Q) package. “A” and “S” grade chips and devices processed to MIL-STD-883B, REV. C are also available. PRODUCT HIGHLIGHTS 1. The AD844 is a versatile, low cost component providing an excellent combination of ac and dc performance. It may be used as an alternative to the EL2020 and CLC400/1. 2. It is essentially free from slew rate limitations. Rise and fall times are essentially independent of output level. 3. The AD844 can be operated from ±4.5 V to ±18 V power supplies and is capable of driving loads down to 50 Ω, as well as driving very large capacitive loads using an external network. 4. The offset voltage and input bias currents of the AD844 are laser trimmed to minimize dc errors; VOS drift is typically 1 µV/°C and bias current drift is typically 9 nA/°C. 5. The AD844 exhibits excellent differential gain and differen- tial phase characteristics, making it suitable for a variety of video applications with bandwidths up to 60 MHz. 6. The AD844 combines low distortion, low noise and low drift with wide bandwidth, making it outstanding as an input am- plifier for flash A/D converters. 16-Pin SOIC (R) Package 8-Pin Plastic (N), and Cerdip (Q) Packages |
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