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Burr-Brown Corporation - MOTOR CONTROL CURRENT MEASUREMENT

Numéro de référence ADS1203
Description MOTOR CONTROL CURRENT MEASUREMENT
Fabricant Burr-Brown Corporation 
Logo Burr-Brown Corporation 





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ADS1203 fiche technique
ADS1203
Motor Control Current Measurement
1ĆBit, 10MHz, 2ndĆOrder, DeltaĆSigma Modulator
SBAS318 − JUNE 2004
FEATURES
D 16-Bit Resolution
D 14-Bit Linearity
D ±250mV Input Range with Single +5V Supply
D 1% Internal Reference Voltage
D 1% Gain Error
D Flexible Serial Interface with Four Different
Modes
D Implemented Twinned Binary Coding as
Split-Phase or Manchester Coding for
One-Line Interfacing
D Operating Temperature Range:
−40°C to +85°C
APPLICATIONS
D Motor Control
D Current Measurement
D Industrial Process Control
D Instrumentation
D Smart Transmitters
D Portable Instruments
D Weight Scales
D Pressure Transducers
VIN+
VIN
VDD
GND
DESCRIPTION
The ADS1203 is a delta-sigma (∆Σ) modulator with a
95dB dynamic range, operating from a single +5V
supply. The differential inputs are ideal for direct
connection to transducers or low-level signals. With the
appropriate digital filter and modulator rate, the device
can be used to achieve 16-bit analog-to-digital (A/D)
conversion with no missing codes. An effective
resolution of 14 bits or SNR of 85dB (typical) can be
maintained with a digital filter bandwidth of 40kHz at a
modulator rate of 10MHz. The ADS1203 is designed for
use in medium- to high-resolution measurement
applications including current measurements, smart
transmitters, industrial process control, weigh scales,
chromatography, and portable instrumentation. It is
available in an 8-lead TSSOP package. A 16-pin QFN
(3x3) package will be available soon.
2nd−Order
∆Σ Modulator
RC Oscillator
20MHz
Buffer
Reference
Voltage
2.5V
Interface
Circuit
MDAT
MCLK
M0
M1
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.
Copyright 2004, Texas Instruments Incorporated
www.ti.com

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