AD7242

Features:

Two 12-Bit/14-Bit DACs with Output Amplifiers
AD7242: 12-Bit Resolution
AD7244: 14-Bit Resolution
On-Chip Voltage Reference
High Speed Serial Interface
Operates from 65 V Supplies
Specified Over 408C to +858C in Plastic Packages
Low Power 130 mW typ


Pinout




Specifications

V_DD to AGND  . . . . . . . . . . . . . . . . . . . . . . . . .  0.3 V to +7 V
V_SS to AGND  . . . . . . . . . . . . . . . . . . . . . . . . .  +0.3 V to 7 V
AGND to DGND  . . . . . . . . . . . . . . . .     0.3 V to VDD + 0.3 V
V_OUT to AGND  . . . . . . . . . . . . . . . . . . . . . . . . . . .VSS to VDD
REF OUT to AGND . . . . . . . . . . . . . .      0.3 V to VDD + 0.3 V
REF INA, REF INB to AGND  . . . . . . .      0.3 V to VDD + 0.3 V
Digital Inputs to DGND  . . . . . . . . . . . . 0.3 V to VDD + 0.3 V


Description

The AD7242/AD7244 is a fast, complete, dual 12-bit/14-bit voltage output D/A converter. It consists of a 12-bit/14-bit DAC, 3 V buried Zener reference, DAC output amplifiers and high speed serial interface logic.

The AD7242/AD7244 operates from ±5 V power supplies, providing an analog output range of ±3 V. A REF OUT/REF IN function allows the DACs to be driven from the on-chip 3 V reference or from an external reference source. The AD7242/AD7244 is fabricated in Linear Compatible CMOS (LC2 MOS), an advanced mixed technology process that combines precision bipolar circuits with low power CMOS logic. Both parts are available in a 24-pin, 0.3-inch wide, plastic or hermetic dual-in-line package (DIP) and in a 28-pin, plastic small outline (SOIC) package. The AD7242 and AD7244 are available in the same pinout to allow easy upgrade from 12-bit to 14-bit performance.