Datasheet > THAT1430

THAT1430

更新时间： 2024-11-28 21:55:43

品牌	Logo	应用领域
其他 - ETC		驱动器
页数	文件大小	规格书
8页	122K
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Balanced Line Drivers

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THAT1430 数据手册

OutSmartsä Balanced Line Drivers

T H A T C o r p o r a t i o n

THAT 1420, 1430

FEATURES

APPLICATIONS

OutSmartsÔ technology tames

clipping behavior into single-ended

loads

Differential Line Driver

Audio Mix Consoles

Distribution Amplifiers

Audio Equalizers

Pin-compatible with SSM2142

Balanced, floating output delivers

transformer-like behavior

Dynamic Range Processors

Digital Effects Processors

Telecommunications Systems

Instrumentation

Stable when driving long cables

and capacitive loads

THAT 1430 delivers low output

offset voltage using single capacitor

Hi-Fi Equipment

Description

The THAT 1420 and 1430 are a new genera-

ing the design inherently more stable and less

sensitive to component tolerances than the CCOS.

Most importantly, the dual-feedback design pre-

vents the loss of common-mode feedback that

plagues the CCOS designs, avoiding the excessive

ground currents and overly-distorted output

waveform that can result when driving sin-

gle-ended loads.

tion of audio differential line drivers with im-

proved performance over conventional

cross-coupled monolithic designs. Both models

exhibit low noise and distortion, high slew rate,

stability under difficult loads, wide output swing,

and have outputs which are short-circuit pro-

tected.

In addition both models incorporate patented

OutSmartsÔ technology, a dual feedback-loop de-

sign that prevents the excessive ground currents

typical of cross-coupled output stages (CCOS)

when clipping into single-ended loads¹.

Where minimum output offset voltage with

minimum parts count is desired, the THAT 1430

further improves over existing designs. In con-

ventional CCOS circuits, two relatively high-value

electrolytic capacitors are required to reduce the

offset voltage. By contrast, the THAT 1430 topol-

ogy requires only a resistor and a single film or

ceramic capacitor to achieve the same effect at

lower parts count and price.

To overcome this problem, the THAT 1420

and 1430 use two individual negative-feedback

loops to separately control the differential output

voltage and common mode output currents, mak-

DIP Pin

Number

SO Pin

Number

1420 Pin

Name

1430 Pin

Name

THAT 1420

10k

Out-

Sens-

Gnd

Out-

Cap2

Gnd

Vcc

Out-

CEXT

Sens+

10k

Dout-

Din+

Cin+

Cin-

Din-

20k

10k

In+

Gnd

10p

A_D& A_C

Dout+

10k

Vee

Vcc

Sens-

Out+

CEXT

10k

Vcc

Vee

Sens+

Out+

Cap1

Out+

Figure 1. THAT 1420 Equivalent Circuit Diagram

Table 1. THAT 1420/1430 pin assignments

1. See Gary Hebert’s paper, An Improved Balanced, Floating Output Driver IC, presented at the 108th AES Convention, Feb. 2000

THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA

Tel: +1 (508) 478-9200; Fax: +1 (508) 478-0990; Web: www.thatcorp.com

12 3 4 5 6 7 8

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