ADS7042IDCUR

The ADS7042 is a 12-bit, 1MSPS ADC. The device supports a wide analog input voltage range (1.65V to 3.6V) and incorporates a capacitor-based SAR ADC with an integrated sample-and-hold circuit. The SPI-compatible serial interface is controlled by the CS and SCLK signals. The input signal is sampled on the falling edge of CS, and SCLK is used for conversion and serial data output. The device supports a wide digital supply range (1.65V to 3.6V), enabling direct connection to various host controllers. The ADS7042 complies with the nominal DVDD range (1.65V to 1.95V) specified in JESD8-7A. The ADS7042 is available in an 8-pin miniature X2QFN package and is rated for an operating temperature range of -40℃ to 125℃. Its compact size and ultra-low power consumption make it ideal for space-constrained, battery-powered applications.

Applications

• Low-power data acquisition
• Battery-powered handheld devices
• Liquid level sensors
• Ultrasonic flow meters
• Motor control
• Wearable fitness devices
• Portable medical devices
• Hard disk blood glucose meters

Key features

• Industry's first nanopower SAR ADC
• 234μW at 1MSPS and 1.8V AVDD
• 690μW at 1MSPS and 3V AVDD
• 69μW at 100kSPS and 3V AVDD
• Below 1μW at 1kSPS and 3V AVDD
• Industry's smallest SAR ADC
• X2QFN-8 package with 2.25mm² footprint
• 1MSPS throughput with zero latency and wide operating range
• AVDD: 1.65V to 3.6V
• DVDD: 1.65V to 3.6V (independent of AVDD)
• Temperature range: -40℃ to 125℃
• Excellent performance
• 12-bit resolution with no missing codes (NMC)
• Max ±1 LSB DNL and INL
• 70dB SNR (at 3V AVDD)
• –80dB THD (at 3V AVDD)
• Single-ended input range: 0V to AVDD with integrated offset calibration
• SPI-compatible serial interface: 16MHz, JESD8-7A compliant digital I/O