AD7323

Data Sheet 500 kSPS, 4-Channel, Software-Selectable, True Bipolar Input, 12-Bit Plus Sign ADC AD7323 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 500 kSPS throughput rate Four analog input channels with channel sequencer Single-ended, true differential, and pseudo differential analog input capability High analog input impedance Low power: 18 mW Full power signal bandwidth: 22 MHz Internal 2.5 V reference High speed serial interface Power-down modes 16-lead TSSOP package iCMOS process technology FUNCTIONAL BLOCK DIAGRAM VDD REFIN/OUT VCC AD7323 VIN0 VIN1 VIN2 VIN3 I/P MUX 2.5V VREF T/H 13-BIT SUCCESSIVE APPROXIMATION ADC CHANNEL SEQUENCER AGND CONTROL LOGIC AND REGISTERS VSS DGND Figure 1. DOUT SCLK CS DIN VDRIVE 05400-001 GENERAL DESCRIPTION The AD73231 is a 4-channel, 12-bit plus sign successive approximation analog-to-digital converter (ADC) designed on the iCMOS™ (industrial CMOS) p...