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Single VGA with Ultralow Noise Preamplifier and Programmable RIN
Analog Devices Inc.
Description
The AD8331 is a single, ultralow noise, linear-in-dB, variable gain amplifier (VGA). Optimized for ultrasound systems, it is usable as a low noise variable gain element at frequencies up to 120...
Features
Ultralow noise preamplifier Voltage noise = 0.74 nV/?Hz Current noise = 2.5 pA/?Hz 3 dB bandwidth: 120 MHz Low power: 125 mW/channel Wide gain range with programmable postamp -4.5 dB to +43.5 dB +7.5 dB to +55.5 dB Low output-referred noise: 48 nV/?Hz typical Active input impedance matching Optimized for 10-bit/12-bit ADCs Selectable output clamping level Single 5 V supply operation Available in a 20-lead QSOP package
Related Datasheets
| Part Number | Description | Category |
| • AD8132 | Low Cost, High Speed Differential Amplifier | Actives - Sensors and Transducers |
| • AD8137 | Low Cost, Low Power 12-Bit Differential ADC Driver | Actives - Sensors and Transducers |
| • AD8138 | Low Distortion Differential ADC Driver | Actives - Sensors and Transducers |
| • AD8139 | Low Noise, Rail-to-Rail, Differential ADC Driver | Actives - Sensors and Transducers |
| • AD8350 | 1.0 GHz Differential Amplifier | Actives - Sensors and Transducers |
| • AD8351 | Low Distortion Fully Differential RF / IF Amplifier | Actives - Sensors and Transducers |
| • AD8352 | 2 GHz Ultra Low Distortion Differential RF/IF Amplifier | Actives - Sensors and Transducers |
| • ADA4922-1 | High Voltage, Differential 18-Bit ADC Driver | Actives - Sensors and Transducers |
| • ADA4937-1 | Ultralow Distortion Differential ADC Driver (Single) | Actives - Sensors and Transducers |
| • ADA4941-1 | Single-Supply, Differential 18-Bit ADC Driver | Actives - Sensors and Transducers |
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