ADS1148QPWRQ1

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ADS1148QPWRQ1

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

Packaging

Package | PIN: PW | 28
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $8.98
10-24 $8.08
25-99 $7.55
100-249 $6.77
250-499 $6.32
500-749 $5.50
750-999 $4.76
1000+ $4.66

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

Texas Instruments  ADS1148QPWRQ1

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.