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DDC112U/1K.B中文资料德州仪器数据手册PDF规格书

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厂商型号

DDC112U/1K.B

功能描述

Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER

丝印标识

DDC112U

封装外壳

SOIC

文件大小

867.28 Kbytes

页面数量

37

生产厂商

TI

中文名称

德州仪器

网址

网址

数据手册

下载地址一下载地址二到原厂下载

更新时间

2025-10-4 15:35:00

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DDC112U/1K.B价格和库存,欢迎联系客服免费人工找货

DDC112U/1K.B规格书详情

FEATURES

MONOLITHIC CHARGE MEASUREMENT A/D

CONVERTER

DIGITAL FILTER NOISE REDUCTION:

3.2ppm, rms

INTEGRAL LINEARITY:

±0.005% Reading ±0.5ppm FSR

HIGH PRECISION, TRUE INTEGRATING FUNCTION

PROGRAMMABLE FULL-SCALE

SINGLE SUPPLY

CASCADABLE OUTPUT

APPLICATIONS

DIRECT PHOTOSENSOR DIGITIZATION

CT SCANNER DAS

INFRARED PYROMETER

PRECISION PROCESS CONTROL

LIQUID/GAS CHROMATOGRAPHY

BLOOD ANALYSIS

DESCRIPTION

The DDC112 is a dual input, wide dynamic range, chargedigitizing

analog-to-digital (A/D) converter with 20-bit resolution.

Low-level current output devices, such as photosensors,

can be directly connected to its inputs. Charge integration is

continuous as each input uses two integrators; while one is

being digitized, the other is integrating.

For each of its two inputs, the DDC112 combines current-tovoltage

conversion, continuous integration, programmable

full-scale range, A/D conversion, and digital filtering to achieve

a precision, wide dynamic range digital result. In addition to

the internal programmable full-scale ranges, external integrating

capacitors allow an additional user-settable full-scale

range of up to 1000pC.

To provide single-supply operation, the internal A/D converter

utilizes a differential input, with the positive input tied to VREF.

When the integration capacitor is reset at the beginning of

each integration cycle, the capacitor charges to VREF. This

charge is removed in proportion to the input current. At the

end of the integration cycle, the remaining voltage is compared

to VREF.

The high-speed serial shift register which holds the result of

the last conversion can be configured to allow multiple DDC112

units to be cascaded, minimizing interconnections. The

DDC112 is available in an SO-28 or TQFP-32 package and is

offered in two performance grades.

供应商 型号 品牌 批号 封装 库存 备注 价格
TI-BB
23+
28SOIC
5000
原装正品,假一罚十
询价
TI/德州仪器
25+
SOP28
2012
全新原装正品支持含税
询价
BB
24+
SOP
9600
原装现货,优势供应,支持实单!
询价
TI/德州仪器
24+
SOP28
7800
全新原厂原装正品现货,低价出售,实单可谈
询价
TI/德州仪器
23+
SOIC28
18204
原装正品代理渠道价格优势
询价
TexasInstruments
18+
ICADC20BITDUALI-INPUT28S
6580
公司原装现货/欢迎来电咨询!
询价
TI
1718+
SOIC28
6800
只做原装进口,假一罚十
询价
TI
16+
SOIC
10000
原装正品
询价
TEXAS INSTRUMENTS
2022+
原厂原包装
8600
全新原装 支持表配单 中国著名电子元器件独立分销
询价
TI/德州仪器
2447
SOIC
100500
一级代理专营品牌!原装正品,优势现货,长期排单到货
询价