LTC1446CS8 datasheet(10/12 Pages) LINER

tên linh kiện	LTC1446CS8

Giải thích chi tiết về linh kiện	Dual 12-Bit Rail-to-Rail Micropower DACs in SO-8

PDF	12 Pages

Scroll/Zoom	100%

nhà sản xuất	LINER [Linear Technology]

Trang chủ	http://www.linear.com

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10 / 12 page

LTC1446/LTC1446L

TYPICAL APPLICATIONS N

An Autoranging 8-Channel ADC with Shutdown

LTC1296

VCC

50k

74HC04

µF

µP

CLK

8 ANALOG

INPUT CHANNELS

DOUT

DIN

CH0

COM

SSO

REF –

CH7

REF+

50k

0.1

µF

100

Ω

100

Ω

LTC1446

CS/LD

CLK

DOUT

DIN

VOUT B

GND

VCC

1446/46L F03

VOUT A

0.1

µF

0.1

µF

This circuit shows how to use one LTC1446 to make an

autoranging ADC. The microprocessor sets the reference

span and the Common pin for the analog input by loading

the appropriate digital code into the LTC1446. VOUT A

controls the Common pin for the analog inputs to the

LTC1296 and VOUTB controls the reference span by setting

the REF + pin on the LTC1296. The LTC1296 has a Shut-

down pin that goes low in shutdown mode. This will turn

off the PNP transistor supplying power to the LTC1446.

The resistor and capacitor on the LTC1446 outputs act as

a lowpass filter for noise.

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