AD7339 Datasheet, PDF (1/12 Pages) Analog Devices – 5 V Integrated High Speed ADC/Quad DAC System

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5 V Integrated High Speed ADC/Quad
DAC System
AD7339
FEATURES
8-Bit A/D Converter
Two 8-Bit D/A Converters
Two 8-Bit Serial D/A Converters
Single +5 V Supply Operation
On-Chip Reference
Power-Down Mode
52-Lead PQFP Package
GENERAL DESCRIPTION
The AD7339 is a composite IC that contains both DAC and
ADC functions. The device includes an 8-bit parallel A-to-D
converter. Two 8-bit parallel DACs are also included as are two
serial control DACs. These serial DACs are 8-bit DACs.
The AD7339, which operates with a single 5 V power supply,
has a bandgap reference on board with a nominal value of 2.5 V.
To reduce the power consumption of the part, each section,
except the reference, can be individually powered down when
not in use.
The AD7339 is available in a 52-lead PQFP package.
FUNCTIONAL BLOCK DIAGRAM
ADCPDB
AIN
ADCCLK
DA0
DA7
DACCLK
DB0
DB7
DACPDB
SDATA
SCLK
LATCH
SDACPDB
AVDD
DVDD1
DGND1
AGND1
T/H
DAC A
REGISTER
DAC B
REGISTER
ADC
PARALLEL
DAC A
PARALLEL
DAC B
SERIAL
CONTROL
LOGIC
DAC 0
REGISTER
DAC 1
REGISTER
SERIAL
DAC 0
SERIAL
DAC 1
2.5V
REFERENCE
AD7339
D0
D7
DACA
DACB
SDAC0F
SDAC0S
SDAC1F
SDAC1S
VREF
VREFA
VREFB
DVDD2 DVDD3 DGND2 DGND3 AGND2 AGND3
REV. 0
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© Analog Devices, Inc., 1997