ADS7042 Reference Design Circuit | Analog to Digital Converter Application Circuit

The ADS7042 is a 12-bit, 1MSPS, analog-to-digital converter (ADC). This section introduces the ADS7042 features, application range, reference design circuitry, and circuit analysis to help you reduce design time.

ADS7042 Features: The ADS7042 supports a wide range of analog input voltages (1.65V to 3.6V) and includes a SAR ADC based on a capacitor with a built-in sample-and-hold circuit. The Serial Peripheral Interface (SPI) compatible serial port 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 range of digital power supplies (1.65V to 3.6V) and can be directly connected to a variety of host controllers. The ADS7042 is compliant with the JESD8-7A standard nominal DVDD range (1.65V to 1.95V). Industry's first successive approximation register (SAR) analog-to-digital converter (ADC) with nanowatt power consumption

Industry's smallest SAR ADC: available in an X2QFN-8 package with a package size of 2.25mm2

1MSPS throughput with zero latency

Wide operating range: AVDD: 1.65V to 3.6V; DVDD: 1.65V to 3.6V (independent of AVDD)

Outstanding performance: 12-bit resolution with no missing codes (NMC), maximum Â±1 least significant bit (LSB) differential nonlinearity (DNL) and integral nonlinearity (INL), 70dB signal-to-noise ratio (SNR) (3V) At AVDD), â€“80dB total harmonic distortion (THD) (at 3V AVDD)

Unipolar input range: 0V to AVDD

ADS7042 typical applications include: low-power data acquisition, battery-powered handheld devices, liquid level sensors, ultrasonic flow meters, motor control, wearable fitness devices, portable medical devices, hard drives, blood glucose meters ADS7042 internal block diagram: />ADS7042 Reference Design Circuit: <img src="http://i.bosscdn.com/blog/20/17/56/16955660150.png" width="343" height=" 235" alt=

/>ADS7042 Reference Design Circuit: <img src="http://i.bosscdn.com/blog/20/17/56/16955660150.png" width="343" height=" 235" alt=

ADS7042 Chinese: Click to download popular application circuits with schematics and source code:

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