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 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
ADS1205 ADS1208 ADS1209
16     16     16    
40     40     40    
2     1     2    
Serial     Serial     Serial    
-40 to 85     -40 to 85     -40 to 105    
VQFN | 24     TSSOP | 16     TSSOP | 24    
5.45 | 1ku     4.18 | 1ku     4.95 | 1ku    
59     64     65.5    
24VQFN: 16 mm2: 4 x 4 (VQFN | 24)     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     24TSSOP: 34 mm2: 4.4 x 7.8 (TSSOP | 24)    
Delta-Sigma     Delta-Sigma     Delta-Sigma    
Differential
Single-Ended    
Differential     Differential
Single-Ended    
Simultaneous Sampling    
   
Simultaneous Sampling    
Ext
Int    
Ext
Int    
Ext
Int    
Oscillator     Excitation Current Sources (iDACs)
Oscillator    
Oscillator    
5     5     5    
0     0     0    
4.5     4.5     4.5    
5.5     5.5     5.5    
2.7     2.7     2.7    
5.5     5.5     5.5    
3     8     8    
88.2     81.5     84    
88.9     82     90    
-96.6     -91     -85    
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