DATASHEET
ISL267450 FN8341
Rev 0.00
August 10, 2012 12-Bit, 1MSPS SAR ADCs
The ISL267450 is a 12-bit, 1MSPS sampling SAR-type ADC
with a differential input span of 2*VREF volts. The ISL267450
features excellent linearity over supply and temperature
variations and is drop-in compatible with the AD7450. The
device can operate from a supply voltage of either 5V or 3V
and maintain measurement accuracy with input signals up to
the supply rails. Features The serial digital interface is SPI compatible and is easily
interfaced to popular FPGAs and microcontrollers. Power
dissipation is 9.0mW at a sampling rate of 1MSPS, and just
5ВµW between conversions utilizing Auto Power-Down mode
(with a 3V supply). 1MHz Sampling Rate Drop-in Compatible with AD7450 Differential Input Simple SPI-compatible Serial Digital Interface Guaranteed No Missing Codes 3V or 5V Operation Low Operating Current
-1.25mA at 833kSPS with 3V Supplies
-1.7mA at 1MSPS with 5V Supplies The ISL267450 is available in 8 Ld SOIC or MSOP packages,
and are specified for operation over the Industrial temperature
range (–40°C to +85°C). Power-down Current between Conversions: 1µA Excellent Differential Non-Linearity Low THD: -83dB (typ) Pb-Free (RoHS Compliant) Available in SOIC and MSOP Packages Applications Remote Data Acquisition Battery Operated Systems Industrial Process Control Energy Measurement Data Acquisition Systems Pressure Sensors Flow Controllers Block Diagram
+VDD VIN+
VIN-VREF ADC SERIAL
INTERFACE SCLK
SDATA …