双通道超低噪声放大器,具有可选择的增益和输入阻抗 Dual-Channel Ultralow Noise Amplifier with Selectable Gain and Input Impedance
Product Details
The AD8432 is a dual-channel, low power, ultralow noise amplifier with selectable gain and active impedance matching. Each channel has a single-ended input, differential output, and integrated input clamps. By pin strapping the gain setting pins, four accurate gains of G = 12.04 dB, 18.06 dB, 21.58 dB, and 24.08 dB ×4, ×8, ×12, and ×16, respectively are possible. A bandwidth of 200 MHz at G = 12.04 dB makes this amplifier well suited for many high speed applications.
The exceptional noise performance of the AD8432 is made possible by the active impedance matching. Using a feedback network, the input impedance of the amplifiers can be adjusted to match the signal source impedance without compromising the noise performance. Impedance matching and low noise in the AD8432 allow designers to create wider dynamic range systems that are able to detect even very low level signals.
The AD8432 achieves 0.85 nV/√Hz input-referred voltage noise for a gain of 12.04 dB. The AD8432’s ultralow noise, low distortion, gain accuracy, and channel-to-channel matching are ideal for high performance ultrasound systems and for processing I/Q demodulator signals.
The AD8432 operates on a single supply of 5 V at 24 mA. It is available in a 4 mm × 4 mm, 24-lead LFSCP. The LFCSP features an exposed paddle that provides a low thermal resistance path to the PCB, which enables more efficient heat transfer and increases reliability. The operating temperature range is −40°C to +85°C.
**Applications**
### Features and Benefits
供电电流 24 mA
电路数 2
通道数 2
耗散功率 0.12 W
输入电容 6.00 pF
输入阻抗 6.20 kΩ
输入补偿电压 1 mV
工作温度Max 85 ℃
工作温度Min -40 ℃
3dB带宽 200 MHz
耗散功率Max 120 mW
电源电压Max 5V ~ 7V
安装方式 Surface Mount
引脚数 24
封装 LFCSP-24
高度 0.73 mm
封装 LFCSP-24
工作温度 -40℃ ~ 85℃
产品生命周期 Active
包装方式 Tape & Reel TR
RoHS标准 RoHS Compliant
含铅标准 Contains Lead
军工级 No
型号/品牌 | 代替类型 | 替代型号对比 |
---|---|---|
AD8432ACPZ-R7 ADI 亚德诺 | 当前型号 | 当前型号 |
AD8432ACPZ-RL 亚德诺 | 类似代替 | AD8432ACPZ-R7和AD8432ACPZ-RL的区别 |