ADS1205 Two 1-Bit, 10MHz, 2nd-Order, Delta-Sigma Modulator ADC | TI.com

ADS1205 (ACTIVE)

Two 1-Bit, 10MHz, 2nd-Order, Delta-Sigma Modulator ADC

 

Description

The ADS1205 is a two-channel, high-performance, delta-sigma () modulator with more than 98dB dynamic range, operating from a single +5V supply. The differential inputs are ideal for direct connection to transducers in an industrial environment. 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 14 bits can be obtained with a digital filter bandwidth of 40kHz at a modulator rate of 10MHz. The ADS1205 is designed for use in high-resolution measurement applications including current measurements, smart transmitters, industrial process control, and resolvers. It is available in a QFN-24 (4x4) package.

Features

  • 16-Bit Resolution
  • 14-Bit Linearity
  • ±2.5V Input Range at 2.5V
  • Internal Reference Voltage: 2%
  • Gain Error: 0.5%
  • Two Independent Delta-Sigma Modulators
  • Two Input Reference Buffers
  • On-Chip 20MHz Oscillator
  • Selectable Internal or External Clock
  • Operating Temperature Range: -40°C to +85°C
  • QFN-24 (4x4) Package
  • APPLICATIONS
    • Motor Control
    • Current Measurement
    • Industrial Process Control
    • Instrumentation
    • Resolver

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Parametrics

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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
ADS1205 Order now 16     40     2     Serial     -40 to 85     VQFN | 24     5.45 | 1ku     59     24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Ext
Int    
Oscillator     5     0     4.5     5.5     2.7     5.5     3     88.9     -96.6     Catalog    
ADS1208 Order now 16     40     1     Serial     -40 to 85     TSSOP | 16     4.18 | 1ku     64     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     Delta-Sigma     Differential    
   
Ext
Int    
Excitation Current Sources (iDACs)
Oscillator    
5     0     4.5     5.5     2.7     5.5     8     82     -91     Catalog    
ADS1209 Order now 16     40     2     Serial     -40 to 105     TSSOP | 24     4.95 | 1ku     65.5     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)     Delta-Sigma     Differential
Single-Ended    
Simultaneous Sampling     Ext
Int    
Oscillator     5     0     4.5     5.5     2.7     5.5     8     90     -85     Catalog