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 Low power: 21 mW Temperature indicator Full power signal bandwidth: 22 MHz Internal 2.5 V reference High speed serial interface Power-down modes 20-lead TSSOP package iCMOS™ process technology FUNCTIONAL BLOCK DIAGRAM VDD REFIN/OUT VCC AD7328 VIN0 VIN1 VIN2 VIN3 VIN4 VIN5 VIN6 VIN7 I/P MUX T/H 2.5V VREF 13-BIT SUCCESSIVE APPROXIMATION ADC TEMPERATURE INDICATOR DOUT CONTROL LOGIC AND REGISTERS SCLK CS DIN VDRIVE AGND VSS DGND CHANNEL SEQUENCER Figure 1. GENERAL DESCRIPTION
iCMOS is a process combining high voltage silicon with submicron CMOS and complementary bipolar technologies. Unlike analog ICs using conventional CMOS processes, iCMOS components can accept bipolar input signals while providing increased performance, dramatically reduced power consumption, and reduced package size.
Analog Devices
