Catalog
Low Power Differential ADC Driver
Key Features
• High performance at low power
• High speed−3 dB bandwidth of 560 MHz, G = 10.1 dB gain flatness to 300 MHzSlew rate: 2800 V/μs, 25% to 75%Fast 0.1% settling time of 9 ns
• −3 dB bandwidth of 560 MHz, G = 1
• 0.1 dB gain flatness to 300 MHz
• Slew rate: 2800 V/μs, 25% to 75%
• Fast 0.1% settling time of 9 ns
• Low power: 9.6 mA per amplifier
• Low harmonic distortion100 dB SFDR at 10 MHz90 dB SFDR at 20 MHz
• 100 dB SFDR at 10 MHz
• 90 dB SFDR at 20 MHz
• Low input voltage noise: 3.6 nV/√Hz
• ±0.5 mV typical input offset voltage
• Externally adjustable gain
• Can be used with gains less than 1
• Differential-to-differential or single-ended-to-differential operation
• Adjustable output common-mode voltage
• Input common-mode range shifted down by 1 VBE
• Wide supply range: +3 V to ±5 V
• Available in 16-lead and 24-lead LFCSP packages
Description
AI
TheADA4932-1/ ADA4932-2 are the next generation AD8132 with higher performance and lower noise and power consumption. They are an ideal choice for driving high performance ADCs as a single-ended-to-differential or differential-to-differential amplifier. The output common-mode voltage is user adjustable by means of an internal common-mode feedback loop, allowing the ADA4932-1 / ADA4932-2 output to match the input of the ADC. The internal feedback loop also provides exceptional output balance as well as suppression of even-order harmonic distortion products.With the ADA4932-1 / ADA4932-2, differential gain configurations are easily realized with a simple external four-resistor feedback network that determines the closed-loop gain of the amplifier.The ADA4932-1 / ADA4932-2 were fabricated using the Analog Devices, Inc., proprietary silicon-germanium (SiGe) complementary bipolar process, enabling it to achieve low levels of distortion and noise at low power consumption.The low offset and excellent dynamic performance of the ADA4932-1/ADA4932-2 make them well suited for a wide variety of data acquisition and signal processing applications.The ADA4932-1 is available in a 16-lead LFCSP, and the ADA4932-2 is available in a 24-lead LFCSP. The pinouts are optimized to facilitate the printed circuit board (PCB) layout and minimize distortion. The ADA4932-1/ADA4932-2 are specified to operate over the −40°C to +105°C temperature range; both operate on supplies between +3 V and ±5 V.APPLICATIONSADC driversSingle-ended-to-differential convertersIF and baseband gain blocksDifferential buffersLine drivers
