
Analog Devices
GENERAL DESCRIPTION
The AD7298 is a 12-bit, high speed, low power, 8-channel, successive approximation ADC with an internal temperature sensor. The part operates from a single 3.3V power supply and features throughput rates up to 1MSPS. The device contains a low noise, wide bandwidth track-and-hold amplifier that can handle input frequencies in excess of 70 MHz.
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FEATURES
12 bit SAR ADC
8 single-ended inputs
Channel sequencer functionality
Fast throughput of 1Msps
Analog Input Range 0 to 2.5V
12-bit temperature-to-digital converter
Temperature sensor accuracy of ±2°C typical
Temperature range: −40°C to +125°C
Specified for VDD of 2.8 V to 3.6V
Logic Voltage VDRIVE = 1.65V to 3.6V
Power-down current : <10 µA
Internal 2.5V Reference
Internal Power on Reset
High speed serial interface SPI™
20-lead LFCSP