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Precision ADCs (<=10MSPS)

ADS1202

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Current-shunt delta-sigma modulator, 10MHz CLK, +/-250mV input, 16-bit resolution

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Data sheet

ADS1202

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 16 Number of input channels 1 Interface type Serial Architecture Delta-Sigma Modulator Input type Differential Rating Catalog Reference mode Int Input range (Max) (V) 0.25 Input range (Min) (V) -0.25 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 30 Analog voltage AVDD (Min) (V) 4.5 SNR (dB) 70.5 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 12 Digital supply (Min) (V) 4.5 Digital supply (Max) (V) 5.5
Resolution (Bits) 16 Number of input channels 1 Interface type Serial Architecture Delta-Sigma Modulator Input type Differential Rating Catalog Reference mode Int Input range (Max) (V) 0.25 Input range (Min) (V) -0.25 Features Oscillator Operating temperature range (C) -40 to 85 Power consumption (Typ) (mW) 30 Analog voltage AVDD (Min) (V) 4.5 SNR (dB) 70.5 Analog voltage AVDD (Max) (V) 5.5 INL (Max) (+/-LSB) 12 Digital supply (Min) (V) 4.5 Digital supply (Max) (V) 5.5
TSSOP (PW) 8 19 mm² 3 x 6.4
  • 16-BIT RESOLUTION
  • 13-BIT LINEARITY
  • RESOLUTION/SPEED TRADE-OFF:
       10-Bit Effective Resolution with 20 µs Signal
       Delay (12-bit with 77 µs)
  • ±250mV INPUT RANGE WITH SINGLE 5V SUPPLY
  • 2% INTERNAL REFERENCE VOLTAGE
  • 2% GAIN ERROR
  • FLEXIBLE SERIAL INTERFACE WITH FOUR DIFFERENT MODES
  • IMPLEMENTED TWINNED BINARY CODING AS SPLIT PHASE OR MANCHESTER CODING FOR ONE LINE INTERFACING
  • OPERATING TEMPERATURE RANGE:
       –40°C to +85°C
  • APPLICATIONS
    • MOTOR CONTROL
    • CURRENT MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • INSTRUMENTATION
    • SMART TRANSMITTERS
    • PORTABLE INSTRUMENTS
    • WEIGHT SCALES
    • PRESSURE TRANSDUCERS
  • 16-BIT RESOLUTION
  • 13-BIT LINEARITY
  • RESOLUTION/SPEED TRADE-OFF:
       10-Bit Effective Resolution with 20 µs Signal
       Delay (12-bit with 77 µs)
  • ±250mV INPUT RANGE WITH SINGLE 5V SUPPLY
  • 2% INTERNAL REFERENCE VOLTAGE
  • 2% GAIN ERROR
  • FLEXIBLE SERIAL INTERFACE WITH FOUR DIFFERENT MODES
  • IMPLEMENTED TWINNED BINARY CODING AS SPLIT PHASE OR MANCHESTER CODING FOR ONE LINE INTERFACING
  • OPERATING TEMPERATURE RANGE:
       –40°C to +85°C
  • APPLICATIONS
    • MOTOR CONTROL
    • CURRENT MEASUREMENT
    • INDUSTRIAL PROCESS CONTROL
    • INSTRUMENTATION
    • SMART TRANSMITTERS
    • PORTABLE INSTRUMENTS
    • WEIGHT SCALES
    • PRESSURE TRANSDUCERS

The ADS1202 is a precision, 80dB dynamic range, delta-sigma () modulator operating from a single +5V supply. The differential inputs are ideal for direct connections 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. Effective resolution of 12 bits can be maintained with a digital filter bandwidth of 10kHz at a modulator rate of 10MHz. The ADS1202 is designed for use in medium resolution measurement applications including current measurements, smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation. It is available in a TSSOP-8 package.

The ADS1202 is a precision, 80dB dynamic range, delta-sigma () modulator operating from a single +5V supply. The differential inputs are ideal for direct connections 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. Effective resolution of 12 bits can be maintained with a digital filter bandwidth of 10kHz at a modulator rate of 10MHz. The ADS1202 is designed for use in medium resolution measurement applications including current measurements, smart transmitters, industrial process control, weigh scales, chromatography, and portable instrumentation. It is available in a TSSOP-8 package.
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Technical documentation

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Type Title Date
* Data sheet ADS1202: Motor Control Current Shunt, 1-Bit, 10MHz, 2nd-Order D-S Modulator datasheet (Rev. B) 12 Jul 2004
Application note Digital Filter Types in Delta-Sigma ADCs PDF | HTML 27 Jun 2017
Analog Design Journal How delta-sigma ADCs work, Part 1 (Rev. A) 19 Sep 2016
E-book Best of Baker's Best: Precision Data Converters -- Delta-Sigma ADCs 19 Mar 2015
Technical article System trade-offs when using delta-sigma modulators and digital filters 03 Feb 2015
Analog Design Journal How delta-sigma ADCs work, Part 2 09 Nov 2011
Application note Using the ADS1202 Reference Design 19 Nov 2003
Application note Clock Divider Circuit for the ADS1202 in Mode 3 Operation 15 Sep 2003
Application note Interfacing the ADS1202 Modltr With a Pulse Transformer in Galvanically Isolated 02 Jun 2003
Application note Combining ADS1202 with FPGA Digital Filter for Current Msrmnt in Motor Cntrl App 28 Apr 2003
Application note Choosing an Optocoupler for the ADS1202 Operating in Mode 1 12 Feb 2003

Design & development

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Evaluation board

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The AMC1210MB-EVM is a complete evaluation kit for the AMC1210 & ADS1205 in resolver applications and part of a modular evaluation system for evaluating TI delta-sigma modulators. The AMC1210MB-EVM software allows use of the AMC1210 in a variety of configurations for resolver and current shunt (...)

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Support software

ADS1202REF — ADS1202 family FPGA software code examples

The ADS1202 reference design provides two isolated ADS1202 circuits for a variety of applications. It includes a Sinc3 filter implemented in a Xilinx® XC2S150 FPGA. Optional optocouplers can be used to provide electrical isolation.

The modular form factor of the reference design allows direct (...)

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Calculation tool

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Delta Sigma Modulator Filter Calculator

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Simulation tool

PSPICE-FOR-TI — PSpice® for TI design and simulation tool

PSpice® for TI is a design and simulation environment that helps evaluate functionality of analog circuits. This full-featured, design and simulation suite uses an analog analysis engine from Cadence®. Available at no cost, PSpice for TI includes one of the largest model libraries in the (...)
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Simulation tool

TINA-TI — SPICE-based analog simulation program

TINA-TI provides all the conventional DC, transient and frequency domain analysis of SPICE and much more. TINA has extensive post-processing capability that allows you to format results the way you want them. Virtual instruments allow you to select input waveforms and probe circuit nodes voltages (...)
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TSSOP (PW) 8 View options

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