Calculation tool
ADS1203
Current-shunt delta-sigma modulator, 10MHz CLK, +/-250mV input, 16-bit resolution, ext ref option
Data sheet
ADS1203
- 16-Bit Resolution
- 14-Bit Linearity
- ±250mV Input Range with Single +5V Supply
- 1% Internal Reference Voltage
- 1% 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 +125°C - APPLICATIONS
- Motor Control
- Current Measurement
- Industrial Process Control
- Instrumentation
- Smart Transmitters
All trademarks are the property of their respective owners.
The ADS1203 is a delta-sigma (
) 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, and industrial process control. The
ADS1203 is available in TSSOP-8 and QFN-16 (3x3) packages.
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Technical documentation
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View all 11 | Type | Title | Date | ||
|---|---|---|---|---|
| * | Data sheet | Motor Control, Current Measurement, 1-Bit, 10MHz, 2nd-Order, Delta-Sig Modulator datasheet (Rev. C) | 09 Jan 2008 | |
| Application note | Digital Filter Types in Delta-Sigma ADCs (Rev. A) | PDF | HTML | 29 Mar 2023 | |
| Application note | QFN and SON PCB Attachment (Rev. B) | PDF | HTML | 24 Aug 2018 | |
| 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 | ||
| 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
For additional terms or required resources, click any title below to view the detail page where available.
Evaluation board
AMC1210MB-EVM — AMC1210 motherboard evaluation module
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 (...)
User guide: PDF
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 (...)
Calculation tool
ANALOG-ENGINEER-CALC — Analog engineer's calculator
The analog engineer’s calculator is designed to speed up many of the repetitive calculations that analog circuit design engineers use on a regular basis. This PC-based tool provides a graphical interface with a list of various common calculations ranging from setting operational-amplifier (...)
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 (...)
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 (...)
User guide: PDF
| Package | Pins | Download |
|---|---|---|
| TSSOP (PW) | 8 | View options |
| VQFN (RGT) | 16 | View options |
Ordering & quality
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Support & training
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