THAT4320Q28-U 模拟引擎动态处理器

预调整的 VCA 和 RMS 检测器
宽电源电压范围：4.5V~16V
低电源电流：3.7mA 典型值。(5V)
四个运算放大器
一个低噪声运算放大器 (<5nV/√Hz)
机载 PTAT 参考
宽动态范围：120dB 作为压扩器

技术规格

电源电压（最低） Supply Voltage (minimum)	4.5V
电源电压（最大） Supply Voltage (maximum)	16V
电源类型 Supply Type	Single
电源电流 Supply Current	1.7mA
总谐波失真 Total Harmonic Distortion	0.05%
总增益范围 Total Gain Range	-100, +40dB

详细描述

THAT4320 是一款单芯片模拟引擎®，针对低电压、低功耗运行进行了优化。

该表面贴装部件结合了一个高性能压控放大器 (VCA)、RMS 电平传感器和四个运算放大器，面向电池供电的音频应用，例如无线麦克风、无线仪器和入耳式监听器。

4320 可在低至 +4.5 Vdc 的单电源电压下工作，仅消耗 3.7 mA。

VCA 在晶圆阶段进行了预修整，无需进一步调整即可提供低失真。

一个运算放大器足够安静，可以用作麦克风前置放大器。

该部件专为用作压扩降噪系统而开发，借鉴了 THAT 在 dbx® 降噪技术方面的悠久历史和经验。然而，该部件具有 22 个有源引脚，非常灵活，可以针对各种应用进行配置，包括单频段和多频段压扩器、压缩器、限幅器、AGC、de-esser 等。

演示板 THAT4320DEMO 可用于该产品。

The THAT4320 is a single-chip Analog Engine® optimized for low-voltage, low-power operation.

Incorporating a high-performance voltage- controlled amplifier (VCA), RMS-level sensor, and four op-amps, the surface mount part is aimed at battery-operated audio applications such as wireless microphones, wireless instruments and in-ear monitors.

The 4320 operates from a single supply voltage down to +4.5 Vdc, drawing only 3.7 mA.

The VCA is pre-trimmed at wafer stage to deliver low distortion without further adjustment.

One op-amp is quiet enough to be used as a microphone preamp.

The part was developed specifically for use as a companding noise reduction system, drawing from THAT's long history and experience with dbx® technology for noise reduction. However, with 22 active pins, the part is extremely flexible and can be configured for a wide range of applications including single and multi-band companders, compressors, limiters, AGCs, de-essers, etc.

Demonstration Board THAT4320DEMO is available for this product.