ADS7057IRUGR

The ADS7057 device belongs to a series of pin-to-pin compatible, high-speed, low-power, single-channel successive approximation register (SAR) analog-to-digital converters (ADCs). This device is a 14-bit, 2.5 MSPS SAR ADC that supports fully differential inputs in the range of ±AVDD, where AVDD ranges from 2.35V to 3.6V. The internal offset voltage calibration function maintains excellent offset voltage specifications across the entire AVDD and operating temperature range. The device supports an SPI-compatible serial interface controlled by CS and SCLK signals. The input signal is sampled on the falling edge of CS, while SCLK is used for conversion and serial data output. The device supports a wide digital power supply range (1.65V to 3.6V) and can be directly connected to various host controllers. The nominal DVDD range (1.65V to 1.95V) of the ADS7057 complies with the JESD8-7A standard. The ADS7057 comes in an 8-pin, small X2QFN package and can operate normally over a wide industrial temperature range (-40°C to +125°C). With its small size and extremely low power consumption, this device is ideal for space-constrained, battery-powered applications that require high-speed, high-resolution data acquisition.

Applications

• Optical encoders
• Sonar receivers
• Fish finders
• I/Q demodulators
• Optical line cards and modules
• Thermal imaging cameras
• Ultrasonic flow meters
• Handheld radios

Key features

• 2.5 MSPS throughput
• Small package: X2QFN-8 (1.5mm×1.5mm)
• Full differential input range: ±AVDD
• Wide operating voltage range:
• AVDD: 2.35V to 3.6V
• DVDD: 1.65V to 3.6V (independent of AVDD)
• Temperature range: -40°C to +125°C
• Excellent performance:
• 14-bit NMC DNL, ±0.9 LSB INL
• 79.5dB SINAD (at 2kHz)
• 77dB SINAD (at 1MHz)
• Low power consumption:
• 3.6mW (at 2.5 MSPS, 3.3V AVDD)
• 160μW (at 100kSPS, 3.3V AVDD)
• 82μW (at 100kSPS, 2.5V AVDD)
• Integrated offset calibration and SPI-compatible serial interface: 60MHz
• Digital I/O compliant with JESD8-7A