Quick Detail:
24-Bit ANALOG-TO-DIGITAL CONVERTER
Description:
The ADS1242 and ADS1243 are precision, wide dynamic range, delta-sigma, analog-to-digital (A/D) converters with 24-bit resolution operating from 2.7V to 5.25V supplies. These delta-sigma, A/D converters provide up to 24 bits of no missing code performance and effective resolution of 21 bits.
The input channels are multiplexed. Internal buffering can be selected to provide a very high input impedance for direct connection to transducers or low-level voltage signals. Burnout current sources are provided that allow for the detection of an open or shorted sensor. An 8-bit digital-to-analog converter (DAC) provides an offset correction with a range of 50% of the FSR (Full-Scale Range).
The Programmable Gain Amplifier (PGA) provides selectable gains of 1 to 128 with an effective resolution of 19 bits at a gain of 128. The A/D conversion is accomplished with a second-order delta-sigma modulator and programmable FIR filter that provides a simultaneous 50Hz and 60Hz notch. The reference input is differential and can be used for ratiometric conversion.
The serial interface is SPI compatible. Up to eight bits of data I/O are also provided that can be used for input or output. The ADS1242 and ADS1243 are designed for high-resolution measurement applications in smart transmitters, industrial process control, weight scales, chromatography, and portable instrumentation.
Applications:
â— 24 BITS NO MISSING CODES
â— SIMULTANEOUS 50Hz AND 60Hz REJECTION (–90dB MINIMUM)
â— 0.0015% INL
â— 21 BITS EFFECTIVE RESOLUTION (PGA = 1), 19 BITS (PGA = 128)
â— PGA GAINS FROM 1 TO 128
â— SINGLE-CYCLE SETTLING
â— PROGRAMMABLE DATA OUTPUT RATES
â— EXTERNAL DIFFERENTIAL REFERENCE OF 0.1V TO 5V
â— ON-CHIP CALIBRATION
â— SPI™ COMPATIBLE
â— 2.7V TO 5.25V SUPPLY RANGE
â— 600µW POWER CONSUMPTION
â— UP TO EIGHT INPUT CHANNELS
â— UP TO EIGHT DATA I/O
Specifications:
|
Datasheets |
ADS1242,43 |
|
Product Photos |
20-TSSOP |
|
Product Training Modules |
Data Converter Basics |
|
Video File |
Nuts and Bolts of the Delta-Sigma Converter |
|
Standard Package |
250 |
|
Category |
Integrated Circuits (ICs) |
|
Family |
Data Acquisition - Analog to Digital Converters (ADC) |
|
Series |
- |
|
Packaging |
Tape & Reel (TR) |
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Number of Bits |
24 |
|
Sampling Rate (Per Second) |
- |
|
Data Interface |
Serial, SPI™ |
|
Number of Converters |
1 |
|
Power Dissipation (Max) |
1.9mW |
|
Voltage Supply Source |
Single Supply |
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Operating Temperature |
-40°C ~ 85°C |
|
Mounting Type |
Surface Mount |
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Package / Case |
20-TSSOP (0.173", 4.40mm Width) |
|
Supplier Device Package |
20-TSSOP |
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Number of Inputs and Type |
7 Single-Ended, Unipolar; 4 Differential, Unipolar |
|
Catalog Page |
808 (CN081 PDF) |
|
Other Names |
ADS1243IPWTTR |
Competitive Advantage:
Warranty :180 days !
Free shipping: Order over $1000 win a free shipment fee
(goods weight below 3Kg) ,during 20130901-20130930 .
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