DDC112UK/1K

更新时间： 2024-10-28 12:33:07

品牌	Logo	应用领域
德州仪器 - TI		转换器模数转换器光电二极管
页数	文件大小	规格书
34页	1146K
描述
Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER

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技术参数
数据手册
替代型号

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DDC112UK/1K 技术参数

是否Rohs认证：	符合	生命周期：	Obsolete
零件包装代码：	SOIC	包装说明：	GREEN, PLASTIC, SOIC-28
针数：	28	Reach Compliance Code：	unknown
ECCN代码：	EAR99	HTS代码：	8542.39.00.01
Factory Lead Time：	1 week	风险等级：	5.13
Is Samacsys：	N	最大模拟输入电压：
最长转换时间：	220 µs	转换器类型：	ADC, DELTA-SIGMA
JESD-30 代码：	R-PDSO-G28	长度：	17.9 mm
最大线性误差 (EL)：	0.025%	模拟输入通道数量：	2
位数：	20	功能数量：	1
端子数量：	28	最高工作温度：	70 °C
最低工作温度：		输出位码：	BINARY
输出格式：	SERIAL	封装主体材料：	PLASTIC/EPOXY
封装代码：	SOP	封装等效代码：	SOP28,.4
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
峰值回流温度（摄氏度）：	NOT SPECIFIED	电源：	5 V
认证状态：	Not Qualified	采样速率：	0.003 MHz
座面最大高度：	2.65 mm	子类别：	Analog to Digital Converters
标称供电电压：	5 V	表面贴装：	YES
技术：	CMOS	温度等级：	COMMERCIAL
端子形式：	GULL WING	端子节距：	1.27 mm
端子位置：	DUAL	处于峰值回流温度下的最长时间：	NOT SPECIFIED
宽度：	7.5 mm	Base Number Matches：	1

DDC112UK/1K 数据手册

DDC112

SBAS085B – JANUARY 2000 – REVISED OCTOBER 2004

Dual Current Input 20-Bit

ANALOG-TO-DIGITAL CONVERTER

FEATURES

DESCRIPTION

ꢀ MONOLITHIC CHARGE MEASUREMENT A/D

The DDC112 is a dual input, wide dynamic range, charge-

digitizing analog-to-digital (A/D) converter with 20-bit resolu-

tion. 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.

CONVERTER

ꢀ DIGITAL FILTER NOISE REDUCTION:

3.2ppm, rms

ꢀ INTEGRAL LINEARITY:

±0.005% Reading ±0.5ppm FSR

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

voltage 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 integrat-

ing capacitors allow an additional user-settable full-scale

range of up to 1000pC.

ꢀ HIGH PRECISION, TRUE INTEGRATING FUNC-

TION

ꢀ PROGRAMMABLE FULL-SCALE

ꢀ SINGLE SUPPLY

ꢀ CASCADABLE OUTPUT

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

APPLICATIONS

ꢀ DIRECT PHOTOSENSOR DIGITIZATION

utilizes a differential input, with the positive input tied to V_REF

When the integration capacitor is reset at the beginning of

each integration cycle, the capacitor charges to V_REF. This

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

end of the integration cycle, the remaining voltage is com-

ꢀ CT SCANNER DAS

ꢀ INFRARED PYROMETER

ꢀ PRECISION PROCESS CONTROL

ꢀ LIQUID/GAS CHROMATOGRAPHY

ꢀ BLOOD ANALYSIS

pared to V_REF.

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.

Protected by US Patent #5841310

AV_DD

AGND

V_REF

DV_DDDGND

CAP1A

CHANNEL 1

DCLK

IN1

Dual

Switched

Integrator

DVALID

CAP1B

∆Σ

Modulator

DXMIT

DOUT

DIN

Digital

Filter

Digital

Input/Output

CAP2A

CHANNEL 2

RANGE2

RANGE1

RANGE0

IN2

Control

Dual

Switched

Integrator

CAP2B

TEST

CLK

CONV

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

All trademarks are the property of their respective owners.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of Texas Instruments

standard warranty. Production processing does not necessarily include

testing of all parameters.

www.ti.com

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DDC112UK/1K 替代型号

型号	品牌	替代类型	描述	数据表
DDC112UK/1KG4	TI	完全替代	2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, GREEN, PLASTIC, SOIC-28
DDC112UK	TI	完全替代	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER

与DDC112UK/1K相关器件

型号	品牌	获取价格	描述	数据表
DDC112UK/1KG4	TI	获取价格	2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PDSO28, GREEN, PLASTIC, SOIC-28
DDC112Y	TI	获取价格	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER
DDC112Y/250	TI	获取价格	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER
DDC112Y/250G4	TI	获取价格	Dual Current Input 20-Bit Analog-To-Digital Converter 32-TQFP -40 to 85
DDC112Y/2K	TI	获取价格	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER
DDC112Y/2KG4	TI	获取价格	Dual Current Input 20-Bit Analog-To-Digital Converter 32-TQFP -40 to 85
DDC112Y-250	ETC	获取价格	PCB FOOTPRINT EXPERT
DDC112YK/250	TI	获取价格	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER
DDC112YK/2K	TI	获取价格	Dual Current Input 20-Bit ANALOG-TO-DIGITAL CONVERTER
DDC112YK/2KG4	TI	获取价格	IC 2-CH 20-BIT DELTA-SIGMA ADC, SERIAL ACCESS, PQFP32, GREEN, PLASTIC, TQFP-32, Analog to

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