ADS1148-Q1 Automotive 16-Bit 2kSPS 8-Ch ADC for Precision Sensor Measurement | TI.com

ADS1148-Q1 (ACTIVE)

Automotive 16-Bit 2kSPS 8-Ch ADC for Precision Sensor Measurement

 

Description

The ADS1148-Q1 is a highly-integrated, precision, 16-bit analog-to-digital converter (ADC) that includes many integrated features to reduce system cost and component count for sensor measurement applications. The device features a low-noise, programmable gain amplifier (PGA), a precision delta-sigma (ΔΣ) ADC with a single-cycle settling digital filter, and an internal oscillator. The ADS1148-Q1 integrates a low-drift voltage reference, and two matched programmable excitation current sources (IDACs).

The device offers a fully flexible multiplexer that allows both positive and negative inputs to be selected independently. In addition, the multiplexer integrates sensor burn-out detection, voltage bias for thermocouples, system monitoring, and eight general-purpose digital I/Os (GPIOs). The PGA provides selectable gains up to 128 V/V. These features provide a complete front-end solution for temperature sensor measurement applications, including thermocouples, thermistors, and resistance temperature detectors (RTDs), and other small-signal measurements. The digital filter settles in a single cycle to support fast channel cycling when using the input multiplexer and provides data rates up to 2 kSPS. For data rates of 20 SPS or less, both the 50-Hz and 60-Hz interference are rejected by the filter.

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 C5
  • Programmable Gain: 1 V/V to 128 V/V
  • Programmable Data Rates: 5 SPS to 2 kSPS
  • Single-Cycle Settling for All Data Rates
  • Analog Multiplexer With 8 Independently Selectable Inputs
  • Dual-Matched Programmable Excitation Current Sources: 50 µA to 1.5 mA
  • Internal 2.048-V Voltage Reference
  • Internal 4.096-MHz Oscillator
  • Internal Temperature Sensor
  • Open Sensor Detection
  • Power-Supply and External Reference Monitoring
  • Self and System Calibration
  • 8 General-Purpose I/Os
  • SPI-Compatible Serial Interface
  • Analog Supply: Unipolar (2.7 V to 5.25 V) or Bipolar (±2.5 V)
  • Digital Supply: 2.7 V to 5.25 V

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
ADS1148-Q1 Order now 16     2     8     SPI     -40 to 125     TSSOP | 28     4.66 | 1ku     2.3     28TSSOP: 62 mm2: 6.4 x 9.7 (TSSOP | 28)     Delta-Sigma     Differential
Single-Ended    
   
Ext
Int    
50/60 Hz Rejection
Excitation Current Sources (iDACs)
GPIO
Oscillator
PGA
Temp Sensor    
2.125
4.25    
-2.125
0    
2.7     5.25     2.7     5.25     1     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