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

ADS1203 (ACTIVE)

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

 

Description

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.

Features

  • 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

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Parametrics Compare all products in Precision ADCs (<=10MSPS)

 
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)
SINAD (dB)
SNR (dB)
THD (Typ) (dB)
Rating
ADS1203
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    
   
Ext
Int    
Oscillator
Small Size    
0.25    
-0.25    
4.5    
5.5    
2.7    
5.5    
4    
85    
85    
-95    
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