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DDC112U/1K.B中文资料德州仪器数据手册PDF规格书
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 |