Product
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ADS1148-Q1
  • ADS1148-Q1
  • ADS1148-Q1

ADS1148-Q1

ACTIVE

Automotive 16-bit 2-kSPS ADC with PGA, reference and IDAC for precision sensor measurement

Texas Instruments ADS1148-Q1 Product Info

1 April 2026 0

Parameters

Resolution (Bits)

16

Sample rate (max) (ksps)

2

Number of input channels

8

Interface type

SPI

Architecture

Delta-Sigma

Input type

Differential, Single-ended

Multichannel configuration

Multiplexed

Rating

Automotive

Reference mode

External, Internal

Input voltage range (max) (V)

2.125, 4.25

Input voltage range (min) (V)

-2.125, 0

Features

50/60 Hz Rejection, Excitation Current Sources (iDACs), GPIO, Oscillator, PGA, Temp Sensor

Operating temperature range (°C)

-40 to 125

Power consumption (typ) (mW)

2.3

Analog supply voltage (min) (V)

2.7

Analog supply voltage (max) (V)

5.25

Digital supply (min) (V)

2.7

Digital supply (max) (V)

5.25

Package

TSSOP (PW)-28-62.08 mm² 9.7 x 6.4

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
  • 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

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.

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.

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