新品低噪声可编程增益THAT626X前置放大器- ADC驱动芯片

January 2018  -  For immediate release ... 

THAT Introduces 2-Channel Programmable Preamplifier with ADC Driver
THAT626x Family increases integration and lowers power for low-noise
digitally controlled microphone preamplifiers.

THAT 6261, 6263, and 6266

THAT 6261, 6263, and 6266 Low-Noise
Programmable-Gain Preamplifier and ADC Drivers

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Milford, Mass.. – THAT Corporation today announced three new programmable preamplifiers with integrated ADC drivers. The family includes three products with different gain-step sizes: the 6261, 6263, and 6266 at 1dB, 3dB, and 6dB per step, respectively.
“The 626x is the first integrated microphone preamplifier to fully bridge the gap from XLR to ADC. It’s the whole front-end on a chip.” said Ken Nevard, THAT’s IC Marketing Manager. “And, it uses 10 times less power than alternative solutions.”
Key features include:

Low noise: -127dBu Ein (max gain)
Wide Gain Range: -8 dB to +34 dB
Very Low Power 30 mW per channel
Integrated ADC driver
Unipolar +10V or Bipolar +/-5V power supplies
Daisy Chainable SPI Interface
Small 7mm x 7mm QFN48 Package

All three parts accept up to +16.5dBu input signals, and directly drive common 5 V ADCs to 2 Vrms full-scale. The parts offer very low noise and click-less gain switching, along with on-board zero-crossing detectors (ZCDs). Two general-purpose outputs (GPOs) per channel may be synchronized with that channel’s ZCD.

“With such low power consumption, the 626x is ideal for battery and Power-over-Ethernet (POE) applications.”, said Nevard. “It enables professional audio applications for The Internet of Things (IoT).”

“The 626x family breaks new ground because it’s THAT’s first all-in-one digitally controlled preamp,” added Les Tyler, THAT’s President. “We applied everything we’ve learned from our many separate preamp and controller parts to set a new bar for the category.”

2018年1月-即时释放…

介绍了双通道可编程的ADC驱动前置放大器
that626x家庭增加集成和降低电源噪声
数字控制的麦克风前置放大器。

那6261, 6263，6266

那6261, 6263，6266低噪音
可编程增益前置放大器和ADC驱动器

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Milford大众。–公司今天宣布三个新的可编程集成ADC驱动前置放大器。家庭包括三产品不同增益步长：6261, 6263和6266在1dB，3dB和6dB的每一步，分别。
“626x是第一个集成的麦克风前置放大器完全弥合差距从XLR ADC。它在整个芯片的前端。”Ken Nevard说，这是IC市场经理。而且，它比替代解决方案使用的功率少10倍。
主要特点包括：

低噪音：- 127dbu EIN（最大增益）
宽增益范围：8分贝至34分贝
每通道极低功率30毫瓦
集成的ADC驱动程序
单极或双极性±10V±5V电源
菊花链式SPI接口
小的7毫米x 7毫米QFN48封装

三部分接受了+ 16.5dbu输入信号，并直接驱动共5 V ADC的2 Vrms的全面。本部分提供非常低的噪声和增益开关点击少，随着车载零交叉检测器（zcds）。两个通用输出（GPO）每通道可与频道同步的文件大小。

“这样的低功耗，是理想的626x以太网电源和电池（POE）应用。”尼瓦德说。它能为物联网提供专业的音频应用程序。

“626x家族新的突破，因为这是第一个全数字控制的前置放大器，”Les Tyler说，这是总统。“我们应用我们从许多独立的前置放大器和控制器部分学习的类别设置一个新的酒吧的一切。”

FEATURES
Low noise: -127 dBu EIN (max gain)
-8 dB to +34 dB gain
Choice of step size: 1, 3, or 6 dB
+16.5 dBu maximum input (min gain)
Integrated ADC driver with reference input
High common-mode rejection: > 65dB
Very low power: 30 mW per channel
Unipolar or Bipolar power supplies Analog: +10V +5V or ±5V; Digital: +3.3V
Small form factor: 7x7mm QFN package
Zero crossing detectors minimize zipper noise
Daisy-chainable SPI control interface
Individually controlled Standby and Mute

特征
噪音低：127个（DBU最大增益）
- 8分贝至34分贝增益
步长选择：1, 3，或6分贝
+ 16.5 dBu的最大输入（最小增益）
具有参考输入的集成ADC驱动程序
高共模抑制65db：>
极低功率：每通道30兆瓦
单极或双极电源模拟：+10 +5 V或±5V；数字：+3.3 V
小形状因数：7x7mm QFN封装
过零检测器减少拉链噪声
菊花链式SPI控制接口
单独控制待机和静音

APPLICATIONS
Digitally controlled input stages
Microphone preamplifiers
 Instrumentation amplifiers
Differential amplifiers
Audio Mixing Consoles
PC audio interfaces
Digital video cameras
Digital audio snakes
Portable audio recorders
Programmable gain amplifiers

应用
数字控制输入级
麦克风前置放大器
仪表放大器
微分放大器
调音台
PC音频接口
数码摄像机
数字音频的蛇
便携式录音机
可编程增益放大器

DESCRIPTION
The THAT 626x is a family of two-channel “all-in-one” digitally controlled preamplifiers with integrated ADC drivers. Gain is programmable from -8 to +34 dB. The low-power (60 mW) devices can be powered from unipolar (+10 V and +5 V) or bipolar (±5 V) supplies. The 626x family includes three products distinguished primarily by step size:

Part 6261 6263 6266
Step size 1 dB 3 dB 6 dB
All three parts offer excellent noise performance: at maximum gain: the 6261 EIN is -127 dBu; the 6263 and 6266 are -126 dBu. Dynamic range at minimum gain is up to 118.7 dB.

Their outputs interface directly to commonly used 5 V ADC ICs with 2Vrms differential full-scale inputs. Accordingly, these parts serve as a complete solution to connect an audio input to an A/D converter.

To minimize audibility of gain changes with signal, all 626x family members can be programmed to synchronize gain changes with signal zero crossings. To enable seamless external gain changes, a BUSY pin for each channel allows external events to be synchro-nized with zero crossings.

The parts are controlled via a 4-wire SPI interface running at up to 7.5 MHz (+3.3V supply). Multiple devices may be daisy-chained using one chip select.

Four general purpose logic outputs (GPOs) are available to control external circuitry (e.g., pad, phan-tom power). The GPOs may be synchronized with zero-crossings. Each channel may be set to low-power standby mode, and can be muted by about 62 dB.

The 626x comes in a 7X7 mm 48-pin QFN pack-age. They are truly all-in-one mic preamps – from XLR to ADC

描述
这是一个家庭的626x两通道“一卡通”的数字控制放大器与集成的ADC驱动程序。增益是可编程的- 8至34分贝。低功耗（60兆瓦）的设备可以从单极（+ 10 V和+ 5 V）或双极（±5 V）电源供电。626x家族包括三个产品的区别主要是由步长：

第6261部分6263 6266
步长1分贝3分贝6分贝
三部分提供了良好的噪声性能：最大的收获：一是6261 127 6263和6266业务；126业务。最小增益动态范围可达118.7分贝。

它们的输出直接连接到ADC集成电路常用的5 V 2vrms微分全面投入。因此，这些部分作为一个完整的解决方案，将音频输入连接到A/D转换器。

最小增益变化信号的可听性，所有626x家庭成员可编程增益变化的同步信号的零交叉点。为了使无缝外部增益变化，每个信道繁忙引脚允许外部事件是同步过零。

这部分是通过一个4线SPI接口运行在高达7.5 MHz的控制（+3.3 V电源）。多个设备可以使用一个芯片选择菊花链。

四通用逻辑输出（GPO）可控制外部电路（如垫，phan tom电力）。该GPO可能与过零同步。每个通道可以设置为低功耗待机模式，并且可以静音约62分贝。

的626x进来一个7x7毫米48引脚QFN封装。他们是真正的一–XLR麦克风前置放大器与ADC