技術(shù)規(guī)格

詳細(xì)描述

5171 是一款低失真開關(guān)電阻梯，專為與 1570 配合使用而設(shè)計，是一款多功能的高性能麥克風(fēng)前置放大器。它還可以與其他分立式前端解決方案同樣出色地工作，為設(shè)計人員提供開發(fā)新產(chǎn)品的機(jī)會。

增益可調(diào)至 5.6dB，并從 13.6dB 到 68.6dB 以 1dB 為步長，使用內(nèi)置過零檢測器和其他正在申請的技術(shù)來降低拉鏈噪聲，從而實現(xiàn)非常平滑和安靜的增益變化。

5171 上的四個通用輸出可以連接到各種外圍功能，例如輸入板、幻象電源開關(guān)、信號路由開關(guān)、LED 指示燈等。

可尋址 SPI 接口支持回讀，使容錯控制軟件能夠驗證正確操作。

THAT5171 采用高壓 CMOS 工藝制造，采用專有技術(shù)減少 FET 開關(guān)毛刺。THAT5171 采用 7x7mm QFN32 封裝，占用的電路板空間非常小。

從未有過令人滿意的帶數(shù)字控制的集成麥克風(fēng)前置？？直到現(xiàn)在。使用 THAT 1570/5171，設(shè)計人員現(xiàn)在可以將具有高聲音性能和數(shù)字可控性的前置放大器集成到比以往更廣泛的產(chǎn)品中。

* 包括差分放大器級中的 5.6dB 衰減

The 5171 is a low distortion switched resistor ladder that has been designed to work with the 1570, resulting in a versatile very high performance microphone preamplifier. It will also work equally well with other discrete front end solutions offering designers great opportunities for new products.

The gain is adjustable to 5.6dB, and from 13.6dB to 68.6dB in 1 dB steps with built-in zero crossing detector and other patent-pending techniques for reducing zipper noise, resulting in very smooth and silent gain changes.

Four general purpose outputs on the 5171 can be connected to a variety of peripheral functions, e.g. input pad, phantom power switches, signal routing switches, LED indicators etc.

The addressable SPI interface supports read-back, enabling fault tolerant control software to verify proper operation.

The THAT5171 is fabricated in a high-voltage CMOS process, with proprietary techniques for reducing FET switching glitches. Packaged in 7x7mm QFN32 the THAT5171 takes up very little board space.

There has never been a satisfactory integrated mic pre with digital control?until now. With the THAT 1570/5171, designers can now incorporate a preamp with high sonic performance and digital controllability into a wider range of products than ever before.

* includes 5.6dB attenuation in differential amplifier stage