低噪声差分音频前置放大器THAT1580原装集成电路

FEATURES

• Low Noise: 1 nV/√Hz input noise (60 dB gain)
• Low THD+N:
   0.0003% @ 3 - 30 dB gain
   0.0005% @ 40 dB gain
• Low Current: 7.9 mA typ
• Wide Bandwidth: 2.7 MHz @ 40dB gain
• High Slew Rate: 53 V/µs
• Wide Output Signal Swing: > +29.8 dBu
• Gain adjustable from 0 to > 60 dB
• Differential output
• Small 4x4mm QFN16 package
• Mates with THAT's family of Digital Preamplifier Controllers

特征
•噪声低：1纳伏/√Hz输入噪声（60分贝增益）
•低THD：
0.0003% @ 3 - 30分贝增益
0.0005% @ 40分贝增益
•低电流：7.9毫安典型
•带宽：2.7 MHz @ 40dB的增益
•高转换率：53 V /µS
•宽输出信号摆幅：> + 29.8 dBu
•增益从0到60分贝可调
•差分输出
•4x4mm封装小qfn16
•与该系列数字前置放大器控制器的朋友
 

APPLICATIONS
Microphone Preamplifiers
Digitally-Controlled Microphone Preamplifiers
Differential Low-Noise Preamplifiers
Differential Summing Amplifiers
Differential Variable-Gain Amplifiers
Moving-Coil Transducer Amplifiers
Line Input Stages
Audio
Sonar
Instrumentation

应用
麦克风前置放大器
数字控制的麦克风前置放大器
微分Low Noise Preamplifiers
微分求和放大器
差动可变增益放大器
动圈式传感器放大器
线路输入阶段
音频
声纳
仪器仪表

DESCRIPTION
 

The THAT1580 is a versatile, high performance current-feedback amplifier suitable for differential microphone preamp and bus summing applications. The IC comes in a small QFN package, which saves PCB space over discrete and other integrated solutions.

Gain is adjusted via three external resistors (RA, RB, and RG), making it possible to optimize noise over a wide range of gains. The 1580 supports the traditional approach to gain control (viz., THAT's 1510 or 1512) by fixing RA and RB, and varying RG to control gain. However, the 1580 also supports varying all three resistors simultaneously with a dual-gang potentiometer, or a switched resistor network. This flexible approach enables the designer to optimize noise over a wider range of gains than is possible with fixed RA and RB.

The 1580 is designed to mate perfectly with THAT's 5171 and 5173 Digital Preamplifier Controller ICs. Along with the 1580, these switched resistor networks provide optimized, digitally controlled audio preamplifiers

描述
的THAT1580是一种多功能、高性能的电流反馈放大器适用于差分麦克风前置总线和总结应用。集成电路是在一个小的QFN封装，可节省PCB空间离散等一体化解决方案。

增益是通过三个外部电阻（RA，RB，RG）调整，使之有可能在广泛的增益优化噪声。1580支持传统的方法来获得控制（即，1510或1512）通过固定RA和RB，并改变RG控制增益。然而，1580也支持改变所有这三个电阻同时与双团伙电位器，或开关电阻网络。这种灵活的方法使设计者能够优化噪声在更广泛的收益比固定的RA和RB是可能的。

1580是配合完美的5171和5173数字前置放大器控制器IC。随着1580，这些开关电阻网络提供优化，数字控制音频前置放大器