双通道数字可编程增益控制器THAT5263专业音频集成电路

FEATURES
Ideal mate for THAT 1580 and 1583 preamplifiers
Wide gain range: 0 to 51 dB in 3 dB steps
 Wide supply range: ±5V to ±17V
Wide output swing: +29.6 dBu (±17V sup.)
Wide input swing: +29.6 dBu (±17V sup.)
Low THD+N: < 0.003% @ 24 dB gain
Zero-crossing detector minimizes switching noise
Daisy Chainable SPI interface
Two general-purpose digital outputs
Small 5mm x 5mm QFN24 package

特征
对于1580和1583前置放大器的理想伴侣
广泛的增益范围：0至51分贝在3分贝的步骤
宽电源范围：±5V至±17v
宽输出摆幅：+ 29.6 dBu的（±17v增刊）
宽输入摆幅：+ 29.6 dBu的（±17v增刊）
低THD：0.003% @ 24分贝增益
过零检测器最小化开关噪声
Daisy Chainable SPI接口
两个通用数字输出
小5mm x 5mm qfn24包

APPLICATIONS
Digitally controlled microphone preamplifiers
Digitally-controlled instrumentation amplifiers
Digitally-controlled differential amplifiers
Audio mixing consoles
Computer audio interfaces
Audio distribution systems
Digital audio snakes
Audio recorders

应用
数字控制的麦克风前置放大器
数字控制仪表放大器
数字控制差分放大器
调音台
计算机音频接口
音频分配系统
数字音频的蛇
录音机

DESCRIPTION
The THAT 5263 is a 2-channel digital preamplifier controller intended for use with low-noise, analog, differential audio preamplifiers such as the THAT 1580 and 1583. The 5263 controls gain from 0dB to 51 dB in 3dB steps while preserving low noise and distortion. Operating from ±5V to ±17V analog supplies, it supports input signal levels as high as +29.6 dBu (at 0dB gain, ±17V supplies, and THAT1580) without an input pad. Used with a THAT 1580 preamplifier IC, equivalent input noise (EIN) at 51 dB gain is -128.3 dBu (20 Hz - 20 kHz bandwidth, 150-ohm source).

Each 5263 channel includes a zero-crossing detector to minimize glitches (zipper noise) during gain adjustments. A built-in timer forces a gain change if no zero crossing occurs within 24 msec of a gain-change command. A busy pin (BSY) allows synchronization of external events and the 5263's own GPOs with the zero-crossing detector.

The 5263 is controlled via an industry standard serial-peripheral interface (SPI) port. The part mates perfectly with the THAT 1580 and 1583 Differential Audio Preamplifier ICs. Together, these combinations provide high performance, space-saving solutions for digitally-controllable audio preamplifiers. However, the 5263 may also be used to control discrete pre-amplifiers.

描述
THAT5263是一个双声道数字前置控制器用于低噪声、模拟差分音频前置放大器，如1580和1583。5263控制增益0dB至51分贝在3dB以下步骤同时保持较低的噪声和失真。从经营±5V至±17V模拟用品，它支持输入信号电平为+ 29.6 dBu的高（在0dB增益，±17v用品，和that1580）无输入板。用1580前置放大器电路，等效输入噪声（EIN）在51 dB增益128.3 DBU（20赫兹- 20 kHz带宽，150欧姆源）。

每5263通道包括一个过零检测器，以减少增益调整期间的毛刺（拉链噪音）。如果在增益变化命令的24毫秒内没有过零点，内置计时器会强制增益改变。一个繁忙的引脚（BSY）允许外部事件和5263的GPOs与零交叉检测器同步。

5263是通过一个工业标准串行外设接口（SPI）端口控制的。该部分配合1580和1583差分音频前置放大器。在一起，这些组合提供高性能、节省空间的解决方案数字可控音频前置放大器。然而，5263也可用于控制离散前置放大器