AD8331开发板套件编程器的评估板-运算放大器规格书PDF中文资料

AD8331属于开发板套件编程器的评估板-运算放大器。由亚德诺半导体技术有限公司制造生产的AD8331评估板 - 运算放大器运算放大器评估板是装有元器件的电路，用于提供特定集成电路或器件的工作实例。该产品族中的电路板提供了运算放大器实例。每个 IC 的通道类型有单通道、双通道、三通道、四通道和八通道，放大器类型包括音频、自动归零、缓冲器、斩波器、电流反馈、电流检测、差动、差分、四通道、仪表、隔离、J-FET、限幅、对数、功率、可编程增益、采样保持、跨阻、可变增益、视频、电压反馈和零漂移。

GENERAL DESCRIPTION

The AD8331/AD8332/AD8334 are single-, dual-, and quad channel ultralow noise, linear-in-dB, variable gain amplifiers (VGAs). Optimized for ultrasound systems, they are usable as a low noise variable gain element at frequencies up to 120 MHz. Included in each channel are an ultralow noise preamplifier (LNA), an X-AMP® VGA with 48 dB of gain range, and a selectable gain postamplifier with adjustable output limiting.

The LNA gain is 19 dB with a single-ended input and differential outputs. Using a single resistor, the LNA input impedance can be adjusted to match a signal source without compromising noise performance.

FEATURES

Ultralow noise preamplifier

Voltage noise = 0.74 nV/√Hz

Current noise = 2.5 pA/√Hz

3 dB bandwidth

AD8331: 120 MHz

AD8332, AD8334: 100 MHz

Low power

AD8331: 125 mW/channel

AD8332, AD8334: 145 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

AD8332 and AD8334 available in lead frame chip scale package

APPLICATIONS

Ultrasound and sonar time-gain controls

High performance AGC systems

I/Q signal processing

High speed, dual ADC drivers