AD7329

www.DataSheet4U.com 1 MSPS, 8-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC AD7329 FEATURES 12-bit plus sign SAR ADC True bipolar input ranges Software-selectable input ranges ±10 V, ±5 V, ±2.5 V, 0 V to +10 V 1 MSPS throughput rate Eight analog input channels with channel sequencer Single-ended true differential and pseudo differential analog input capability High analog input impedance MUXOUT and ADCIN pins allow separate access to mux and ADC Low power: 21 mW Temperature indicator Full power signal bandwidth: 20 MHz Internal 2.5 V reference High speed serial interface iCMOS™ process technology 24-lead TSSOP package Power-down modes FUNCTIONAL BLOCK DIAGRAM MUXOUT+ MUXOUT– ADC IN– ADC IN+ VDD REFIN/REFOUT VCC 2.5V VREF VIN0 VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 DOUT CHANNEL SEQUENCER CONTROL LOGIC AND REGISTERS SCLK CS DIN 05402-001 I/P MUX T/H 13-BIT SUCCESSIVE APPROXIMATION ADC AD7329 VSS AGND VDRIVE Figure 1. GENERAL DESCRIPTION The AD7329 1 is an 8-channel, 12-bit plus sign successive approximation ADC designed on the iCMOS (industrial CMOS) process. iCMOS is a process combining high voltage CMOS and low voltage CMOS. It enables the development of a wide range of high performance analog ICs capable of 33 V operation in a footprint that no previous generation of high voltage parts could achieve. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, dramat...