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ADS7040

ACTIVE

Ultra-low-power, ultra-small-size SAR ADC, 8 bit, 1 MSPS, single ended

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Data sheet

ADS7040

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 8 Sample rate (max) (ksps) 1000 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.171 Analog supply (min) (V) 1.65 Analog supply voltage (max) (V) 3.6 SNR (dB) 49 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 8 Sample rate (max) (ksps) 1000 Number of input channels 1 Interface type SPI Architecture SAR Input type Single-ended Rating Catalog Reference mode Supply Input voltage range (max) (V) 3.6 Input voltage range (min) (V) 0 Features Small Size Operating temperature range (°C) -40 to 125 Power consumption (typ) (mW) 0.171 Analog supply (min) (V) 1.65 Analog supply voltage (max) (V) 3.6 SNR (dB) 49 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
VSSOP (DCU) 8 6.2 mm² 2 x 3.1 X2QFN (RUG) 8 2.25 mm² 1.5 x 1.5
  • Industry’s First SAR ADC with Nanowatt Power Consumption:
    • 171 µW at 1 MSPS with 1.8-V AVDD
    • 555 µW at 1 MSPS with 3-V AVDD
    • 56 µW at 100 kSPS with 3-V AVDD
    • Less than 1 µW at 1 kSPS with 3-V AVDD
  • Industry’s Smallest SAR ADC:
    • X2QFN-8 Package with 2.25-mm2 Footprint
  • 1-MSPS Throughput with Zero Data Latency
  • Wide Operating Range:
    • AVDD: 1.65 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to 125°C
  • Excellent Performance:
    • 8-Bit Resolution with NMC
    • ±0.5-LSB (Max) INL, ±0.4-LSB (Max) DNL
    • 49 dB SNR
    • –70-dB THD
  • Unipolar Input Range: 0 V to AVDD
  • Integrated Offset Calibration
  • SPI™-Compatible Serial Interface: 12 MHz
  • JESD8-7A Compliant Digital I/O
  • Industry’s First SAR ADC with Nanowatt Power Consumption:
    • 171 µW at 1 MSPS with 1.8-V AVDD
    • 555 µW at 1 MSPS with 3-V AVDD
    • 56 µW at 100 kSPS with 3-V AVDD
    • Less than 1 µW at 1 kSPS with 3-V AVDD
  • Industry’s Smallest SAR ADC:
    • X2QFN-8 Package with 2.25-mm2 Footprint
  • 1-MSPS Throughput with Zero Data Latency
  • Wide Operating Range:
    • AVDD: 1.65 V to 3.6 V
    • DVDD: 1.65 V to 3.6 V (Independent of AVDD)
    • Temperature Range: –40°C to 125°C
  • Excellent Performance:
    • 8-Bit Resolution with NMC
    • ±0.5-LSB (Max) INL, ±0.4-LSB (Max) DNL
    • 49 dB SNR
    • –70-dB THD
  • Unipolar Input Range: 0 V to AVDD
  • Integrated Offset Calibration
  • SPI™-Compatible Serial Interface: 12 MHz
  • JESD8-7A Compliant Digital I/O

The ADS7040 is a 8-bit, 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (1.65 V to 3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The ADS7040 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7040 is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.

The ADS7040 is a 8-bit, 1-MSPS, analog-to-digital converter (ADC). The device supports a wide analog input voltage range (1.65 V to 3.6 V) and includes a capacitor-based, successive-approximation register (SAR) ADC with an inherent sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interface to a variety of host controllers. The ADS7040 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7040 is available in 8-pin, miniature, leaded, and X2QFN packages and is specified for operation from –40°C to 125°C. Miniature form-factor and extremely low-power consumption make this device suitable for space-constrained, battery-powered applications.
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Type Title Date
* Data sheet ADS7040 Ultra-Low Power, Ultra-Small Size, 8-Bit, 1-MSPS, SAR ADC datasheet (Rev. C) PDF | HTML 10 Dec 2015
Product overview Bridge Sensor Solution (Rev. A) PDF | HTML 27 Jan 2023
User guide ADS7042EVM-PDK, ADS7049-Q1EVM-PDK, and ADS7057EVM-PDK Evaluation Module (Rev. A) PDF | HTML 13 Jan 2022
Circuit design Driving a SAR ADC directly without a front-end buffer circuit (Rev. A) 06 Mar 2019
Circuit design Low-power sensor measurements: 3.3-V, 1-ksps, 12-bit, single-ended, dual-supply (Rev. A) 06 Mar 2019
Circuit design Low-power sensor measurements: 3.3-V, 1-ksps, 12-bit, single-ended, single-suppl (Rev. A) 06 Mar 2019
Circuit design High-side current shunt monitor circuit to 3-V single-ended ADC 06 Jan 2018
Application brief Optimized Sensor Measurement: Driving a SAR ADC Input Without a Driver Amplifier 01 Sep 2017
Application note Low-Cost, Low-Power, Small 14-bit AFE: Interleaved ADCs Scalable up to 7.5 MSPS 26 May 2017
Technical article 3 ways to scale an analog input signal PDF | HTML 20 Sep 2016
E-book Best of Baker's Best: Precision Data Converters -- SAR ADCs 21 May 2015

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