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ADS7047

ACTIVE

12-Bit, 3MSPS, Differential Input, Small-Size Low-Power SAR ADC

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Data sheet

ADS7047

ACTIVE
Data sheet Order now

Product details

Resolution (Bits) 12 Sample rate (max) (ksps) 3000 Number of input channels 1 Interface type SPI Architecture SAR Input type Differential 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) 4 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 3.6 SNR (dB) 72.9 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
Resolution (Bits) 12 Sample rate (max) (ksps) 3000 Number of input channels 1 Interface type SPI Architecture SAR Input type Differential 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) 4 Analog supply voltage (min) (V) 2.35 Analog supply voltage (max) (V) 3.6 SNR (dB) 72.9 Digital supply (min) (V) 1.65 Digital supply (max) (V) 3.6
X2QFN (RUG) 8 2.25 mm² 1.5 x 1.5
  • 3-MSPS Throughput
  • Small Package Size:
    • X2QFN-8 Package (1.5 mm × 1.5 mm)
  • Fully Differential Input Range: ±AVDD
  • Wide Operating Range:
    • AVDD: 2.35 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:
    • 12-Bit NMC DNL, ±0.2-LSB INL
    • 72.8-dB SINAD at 2 kHz
    • 71.7-dB SINAD at 1 MHz
  • Low Power Consumption:
    • 4 mW at 3 MSPS With 3.3-V AVDD
    • 130 µW at 100 kSPS With 3.3-V AVDD
    • 74 µW at 100 kSPS With 2.5-V AVDD
  • Integrated Offset Calibration
  • SPI-Compatible Serial Interface: 60 MHz
  • JESD8-7A Compliant Digital I/O
  • 3-MSPS Throughput
  • Small Package Size:
    • X2QFN-8 Package (1.5 mm × 1.5 mm)
  • Fully Differential Input Range: ±AVDD
  • Wide Operating Range:
    • AVDD: 2.35 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:
    • 12-Bit NMC DNL, ±0.2-LSB INL
    • 72.8-dB SINAD at 2 kHz
    • 71.7-dB SINAD at 1 MHz
  • Low Power Consumption:
    • 4 mW at 3 MSPS With 3.3-V AVDD
    • 130 µW at 100 kSPS With 3.3-V AVDD
    • 74 µW at 100 kSPS With 2.5-V AVDD
  • Integrated Offset Calibration
  • SPI-Compatible Serial Interface: 60 MHz
  • JESD8-7A Compliant Digital I/O

The ADS7047 device belongs to a family of pin-to-pin compatible, high-speed, low-power, single-channel successive-approximation register (SAR) type analog-to-digital converters (ADCs). The device family includes multiple resolutions, throughputs, and analog input variants (see Table 1 for a list of devices).

The ADS7047 is a 12-bit, 3-MSPS SAR ADC that supports fully-differential inputs in the range of ±AVDD, for AVDD in the range of 2.35 V to 3.6 V.

The internal offset calibration feature maintains excellent offset specifications over the entire AVDD and temperature operating range.

The device supports an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for both conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7047 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7047 is available in an 8-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.

The ADS7047 device belongs to a family of pin-to-pin compatible, high-speed, low-power, single-channel successive-approximation register (SAR) type analog-to-digital converters (ADCs). The device family includes multiple resolutions, throughputs, and analog input variants (see Table 1 for a list of devices).

The ADS7047 is a 12-bit, 3-MSPS SAR ADC that supports fully-differential inputs in the range of ±AVDD, for AVDD in the range of 2.35 V to 3.6 V.

The internal offset calibration feature maintains excellent offset specifications over the entire AVDD and temperature operating range.

The device supports an SPI-compatible serial interface that is controlled by the CS and SCLK signals. The input signal is sampled with the CS falling edge and SCLK is used for both conversion and serial data output. The device supports a wide digital supply range (1.65 V to 3.6 V), enabling direct interfacing to a variety of host controllers. The ADS7047 complies with the JESD8-7A standard for a normal DVDD range (1.65 V to 1.95 V).

The ADS7047 is available in an 8-pin, small, X2QFN package and is specified over the extended industrial temperature range (–40°C to +125°C). The small form-factor and extremely-low power consumption make this device suitable for space-constrained and battery-powered applications that require high-speed, high-resolution data acquisition.
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Technical documentation

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Top documentation Type Title Format options Date
* Data sheet ADS7047 12-Bit, 3-MSPS, Differential Input, Small-Size, Low-Power SAR ADC datasheet PDF | HTML 06 Dec 2017
Application brief Precision ADCs in Servo Drives (Rev. A) PDF | HTML 29 Oct 2025
Product overview Precision ADCs for Motor Encoders and Position Sensing (Rev. A) PDF | HTML 28 Oct 2025
Circuit design Single-ended to diff. signal conversion using an op amp & FDA for unipolar signa (Rev. B) PDF | HTML 24 Sep 2024
Circuit design Single-ended-to-differential circuit using an op amp and FDA for bipolar signals (Rev. B) PDF | HTML 19 Sep 2024
Application brief Improving Response Time and Accuracy in Autonomous Robots With Wideband SAR-ADCs 03 Oct 2018

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