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Automotive 24-bit, 40-kSPS, 10-ch, delta-sigma ADC with PGA, VREF, IDACs and AC excitation


Package | PIN: VQFNP (RHM) | 32
Temp: Q (-40 to 125)
Carrier: Cut Tape
Qty Price
1-9 $14.41
10-24 $13.40
25-99 $12.93
100-249 $11.29
250-499 $10.75
500-749 $9.89
750-999 $8.88
1000+ $8.85


  • AEC-Q100 qualified for automotive applications
    • Temperature grade 1: –40°C to+125°C, TA
  • 24-bit, high-precision ADCs
    • Offset drift: 1 nV/°C
    • Gain drift:0.5 ppm/°C
    • Noise: 30 nVRMS (20 SPS, gain =128)
    • Linearity: 2 ppm
  • CMOS PGA gain: 1 to 128
  • Data rate: 2.5 SPS to 40 kSPS
  • 2.5-V reference: 4 ppm/°C
  • Single-cycle settling mode
  • Signal and reference monitors
  • 5-V or ±2.5-V power supply
  • Internal temperature sensor
  • Cyclic redundancy check (CRC)
  • Excitation current sources
  • Sensor burn-out current sources
  • Four general-purpose inputs/outputs
  • AC excitation for bridge sensors (ADS1261-Q1)
  • 5-mm × 5-mm VQFN package

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Texas Instruments  PADS1261BQWRHMRQ1

The ADS1260-Q1 and ADS1261-Q1 (ADS126x-Q1) are precision, 40-kSPS, delta-sigma (ΔΣ) analog-to-digital converters (ADCs) thatinclude a programmable gain amplifier (PGA). The devices also include a precision voltage referenceand internal fault monitors. The sensor-ready ADCs give a high-accuracy, single-chip solution forthe most demanding measurements, for example, weigh scales and resistance temperature detectors(RTDs).

The ADCs contain an input signal multiplexer, a low-noise PGA (with gains from 1 to 128),a 24-bit ΔΣ modulator, a precision voltage reference, and a programmable digital filter.

The high-impedance PGA inputs (1 GΩ) decrease measurement error due to sensor loading.The ADS1260-Q1 supports three differential or five single-ended inputs. TheADS1261-Q1 supports five differential or ten single-ended inputs. The integratedcurrent sources simplify the measurement of RTDs.

The flexible digital filter is programmable for single-cycle settled conversions. Signaland reference monitors, a temperature sensor, and CRC data verification enhance datareliability.

The ADS126x-Q1 are pin compatible devices given in a 5-mm × 5-mm VQFNpackage and are specified across the –40°C to +125°C temperature range.