ADS1203 Current-Shunt Delta-Sigma Modulator, 10MHz CLK, +/-250mV Input, 16-Bit Resolution |


Current-Shunt Delta-Sigma Modulator, 10MHz CLK, +/-250mV Input, 16-Bit Resolution



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.


  • 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
    • Motor Control
    • Current Measurement
    • Industrial Process Control
    • Instrumentation
    • Smart Transmitters

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADS1203 Order now 16     40     1     Serial     -40 to 125     TSSOP | 8
VQFN | 16    
3.61 | 1ku     33     8TSSOP: 19 mm2: 6.4 x 3 (TSSOP | 8)
16VQFN: 9 mm2: 3 x 3 (VQFN | 16)    
Delta-Sigma     Differential    
Small Size    
0.25     -0.25     4.5     5.5     2.7     5.5     4     85     -95     Catalog