The ADA4927 by Analog Devices is a low noise, ultralow distortion, high speed, current feedback differential amplifier. This is an ideal choice for driving a high performance ADCs with resolutions up to 16 bits from dc to 100 MHz. The output common-mode level can easily be matched to the required ADC input common-mode levels. The internal common-mode feedback loop provides an exceptional output balance and suppression of even-order distortion products.
The ADA4927-1YCPZ-R2 is available in a Pb-free, 3 mm ´ 3 mm 16-lead LFCSP, and the ADA4927-2 is available in a Pb-free, 4 mm ´ 4 mm 24-lead LFCSP. The pinouts are optimized to facilitate printed circuit board (PCB) layout and to minimize distortion. They are specified to operate over the −40°C to +105°C temperature range.
Applications:
ADC drivers
Single-ended-to-differential converters
IF and baseband gain blocks
Differential buffers
Differential line drivers
Feature
- Extremely low harmonic distortion
- −105 dBc HD2 at 10 MHz
- −91 dBc HD2 at 70 MHz
- −87 dBc HD2 at 100 MHz
- −103 dBc HD3 at 10 MHz
- −98 dBc HD3 at 70 MHz
- −89 dBc HD3 at 100 MHz
- Better distortion at higher gains than VF amplifiers
- Low input voltage noise: 1.4 nV/√Hz
- High speed
- −3 dB bandwidth of 2.3 GHz
- 0.1 dB gain flatness: 150 MHz
- Slew rate: 5000 V/µs, 25% to 75%
- Fast 0.1% settling time: 10 ns
- Low input offset voltage: 0.3 mV typical
- Externally adjustable gain
- Stability and bandwidth controlled by feedback resistor
- See data sheet for additional features
Applications
- ADC drivers
- Single-ended-to-differential converters
- IF and baseband gain blocks
- Differential buffers
- Differential line drivers
(Picture: Pinout)
