ADS1259 24-Bit, 14.4kSPS, 1-Ch Delta-Sigma ADC With Low-Drift Voltage Reference for Factory Automation | TI.com

ADS1259 (ACTIVE)

24-Bit, 14.4kSPS, 1-Ch Delta-Sigma ADC With Low-Drift Voltage Reference for Factory Automation

24-Bit, 14.4kSPS, 1-Ch Delta-Sigma ADC With Low-Drift Voltage Reference for Factory Automation - ADS1259
 

Description

The ADS1259 is a high-linearity, low-drift, 24-bit, analog-to-digital converter (ADC) designed for the needs of industrial process control, precision instrumentation, and other exacting applications. Combined with a signal amplifier (such as the PGA280), a high-resolution, high-accuracy measurement system is formed that is capable of digitizing a wide range of signals.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise and linearity performance. The data rates are programmable up to 14kSPS including 10SPS, 50SPS, and 60SPS that provide excellent normal mode line-cycle rejection. The digital filter can be programmed for a fast settling mode where the conversions settle in a single cycle, or programmed for a high line-cycle rejection mode. A fast responding input over-range detector flags the conversion data if an input over-range should occur.

The ADS1259 also provides an integrated low-noise, very low drift 2.5V reference. The on-chip oscillator, an external crystal, or an external clock can by used as the ADC clock source.

Data and control communication are handled over a 4MHz, SPI-compatible interface capable of operating with a minimum of three wires. Data integrity is augmented by data bytes checksum and redundant data read capability. Conversions are synchronized either by command or by pin.

Dissipating only 13mW in operation, the ADS1259 can be powered down, dissipating less than 25µW. The ADS1259 is offered in a TSSOP-20 package and is fully specified from –40°C to +105°C.

Features

  • 24 Bits, No Missing Codes
  • Output Data Rates From 10 To 14kSPS
  • High Performance:
    • INL: 0.4ppm
    • Reference Drift: 2ppm/°C
    • Gain Drift: 0.5ppm/°C
    • Offset Drift: 0.05µV/°C
    • Noise: 0.7µVRMS at 60SPS
  • Simultaneous 50/60Hz Rejection at 10SPS
  • Single-Cycle Settling
  • Internal Oscillator
  • Out-of-Range Detection
  • Readback Data Integrity by Checksum and Redundant Data Read Capability
  • SPI-Compatible Interface
  • Analog Supply: +5V or ±2.5V
  • Digital Supply: +2.7V to +5V
  • Low Power: 13mW
  • APPLICATIONS
    • Industrial Process Control
    • Scientific Instrumentation
    • Test and Measurement

All other trademarks are the property of their respective owners

View more

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

 
Resolution (Bits)
Sample Rate (Max) (kSPS)
# 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)
Rating
Sample Rate (Max) (MSPS)
ADS1259
24    
14.4    
1    
SPI    
-40 to 105    
TSSOP    
5.60 | 1ku    
13    
20TSSOP: 42 mm2: 6.4 x 6.5(TSSOP)    
Delta-Sigma    
Differential
Single-Ended    
N/A    
Ext
Int    
50/60 Hz Rejection
Oscillator    
2.75
5.35    
-2.7
0    
4.75    
5.25    
2.7    
5.25    
167.8    
Catalog    
0.0144    

Other qualified versions of ADS1259

Version Part Number Definition
Automotive ADS1259-Q1 Q100 devices qualified for high-reliability automotive applications targeting zero defects

Featured tools and software

WEBENCH® Designer ADS1259