ADS1259-Q1 Automotive, 24-bit, 14.4kSPS, 1-ch delta-sigma ADC w/ low-drift Vref for high-dynamic range systems | TI.com

ADS1259-Q1 (ACTIVE)

Automotive, 24-bit, 14.4kSPS, 1-ch delta-sigma ADC w/ low-drift Vref for high-dynamic range systems

 

Special note

For evaluation purposes, please see the commercial grade evaluation module ADS1259EVM-PDK

Description

The ADS1259-Q1 is a precision, low-drift, 24-bit, analog-to-digital converter (ADC). The device can perform conversions at data rates up to 14.4 kSPS with high resolution and is therefore ideally suited to measure rapidly changing signals that have a wide dynamic range. An integrated low-noise, low-drift 2.5-V reference eliminates the need for an external voltage reference, thus reducing system cost and component count.

The converter uses a fourth-order, inherently stable, delta-sigma (ΔΣ) modulator that provides outstanding noise performance and linearity. The device can use the integrated oscillator, an external crystal, or an external clock as the ADC clock source.

A fast-responding input overrange detector flags the conversion data if an input overrange event occurs. To augment data integrity in noisy automotive environments the ADS1259-Q1 offers an optional checksum byte and a redundant conversion data-read capability.

The ADS1259-Q1 consumes 13 mW during operation and less than 25 µW when powered down. TI offers the ADS1259-Q1 device in a TSSOP-20 package with full specification from –40°C to 125°C.

Features

  • Qualified for Automotive Applications
  • AEC-Q100 Qualified with the Following Results:
    • Temperature Grade 1: –40°C to 125°C
    • HBM ESD Classification 2
    • CDM ESD Classification C4B
  • Programmable Data Rates: 10 SPS to 14.4 kSPS
  • Single-Cycle Settling Digital Filter
  • High Performance:
    • 21.3 ENOB at 1.2 kSPS
    • INL: 3 ppm
    • Offset Drift: 0.05 µV/°C
    • Gain Drift: 0.5 ppm/°C
  • Internal Reference: 2.5 V, 10 ppm/°C Drift
  • Internal 2% Accurate Oscillator
  • Input Signal Out-of-Range Detection
  • Optional Checksum and Redundant Data-Read Capability
    to Augment Data Integrity
  • SPI-Compatible Interface, Mode 1
  • Analog Supply: 5 V or ±2.5 V
  • Digital Supply: 2.7 V to 5 V

WEBENCH® Designer ADS1259-Q1



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) Rating
ADS1259-Q1 Order now 24     14.4     1     SPI     -40 to 125     TSSOP | 20     6.61 | 1ku     13     20TSSOP: 42 mm2: 6.4 x 6.5 (TSSOP | 20)     Delta-Sigma     Differential
Single-Ended    
   
Ext
Int    
50/60 Hz Rejection
Oscillator    
2.75
5.35    
-2.7
0    
4.75     5.25     2.7     5.25       Automotive    
ADS1013-Q1 Order now 12     3.3     1     I2C     -40 to 125     VSSOP | 10     1.12 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)     Delta-Sigma     Differential
Single-Ended    
   
Int     Oscillator     5.5     0     2     5.5     2     5.5     0.5     Automotive    
ADS1014-Q1 Order now 12     3.3     1     I2C     -40 to 125     VSSOP | 10     1.24 | 1ku     0.3     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)     Delta-Sigma     Differential
Single-Ended    
   
Int     Oscillator     5.5     0     2     5.5     2     5.5     0.5     Automotive    
ADS1015-Q1 Order now 12     3.3     4     I2C     -40 to 125     VSSOP | 10     1.36 | 1ku     0.9     10VSSOP: 9 mm2: 3 x 3 (VSSOP | 10)     Delta-Sigma     Differential
Single-Ended    
Multiplexed     Int     Comparator
Oscillator
PGA    
5.5