The AD8331-EVALZ is an evaluation platform for testing and evaluating the AD8331 device. The AD8331 is a single channel, ultralow noise linear in dB, variable gain amplifier (VGA). Optimised for ultrasound systems, they are usable as a low noise variable gain element at frequencies up to 120MHz. The board is provided completely assembled and tested, therefore, the user only needs to connect an input signal, VGAIN sources and a single 5V power supply. The board has provisions for optional components. The input impedance of the LNA is configured for 50ohm to accommodate most signal generators and network analysers. Input impedances up to 6Kohm can be realized by changing the values of RFB and CSH.
- Ultralow noise preamplifier, voltage noise of 0.74nV/√Hz and current noise of 2.5pA/√Hz
- 3dB bandwidth of 120MHz
- Low power of 125mW/channel
- Wide gain range with programmable postamp
- Low output referred noise of 48nV/√Hz typical
- Active input impedance matching
- Optimised for 10bit/12bit ADCs
- Selectable output clamping level
- Single 5 V supply operation
医用, 传感与仪器, 信号处理, 系统监控
(EN)
