AD7328
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 m W Temperature indicator Full power signal bandwidth: 22 MHz Internal 2.5 V reference High speed serial interface Power-down modes 20-lead TSSOP package i CMOS™ process technology
FUNCTIONAL BLOCK DIAGRAM
VDD REFIN/OUT VCC
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
The AD7328 1 is an 8-channel, 12-bit plus sign, successive approximation ADC designed on the i CMOS (industrial CMOS) process. i CMOS is a process bining high voltage silicon with submicron CMOS and...
