DAC707KH Datasheet, PDF (1/13 Pages) Texas Instruments – Microprocessor-Compatible 16-BIT DIGITAL-TO-ANALOG CONVERTERS

DAC707
®
DAC708
DAC709
SBAS145
Microprocessor-Compatible
16-BIT DIGITAL-TO-ANALOG CONVERTERS
FEATURES
q TWO-CHIP CONSTRUCTION
q HIGH-SPEED 16-BIT PARALLEL, 8-BIT
(BYTE) PARALLEL, AND SERIAL INPUT
MODES
q DOUBLE-BUFFERED INPUT REGISTER
CONFIGURATION
q V_OUT AND I_OUT MODELS
DESCRIPTION
The DAC708 and DAC709 are 16-bit converters de-
signed to interface to an 8-bit microprocessor bus. 16-
bit data is loaded in two successive 8-bit bytes into
parallel 8-bit latches before being transferred into the
D/A latch. The DAC708 and DAC709 are current and
voltage output models respectively and are in 24-pin
hermetic DIPs. Input coding is Binary Two’s Comple-
ment (bipolar) or Unipolar Straight Binary (unipolar,
when an external logic inverter is used to invert the
MSB). In addition, the DAC708/709 can be loaded
serially (MSB first).
The DAC707 is designed to interface to a 16-bit bus.
q HIGH ACCURACY:
Linearity Error ±0.003% of FSR max
Differential Linearity Error ±0.006% of FSR
max
q MONOTONIC (TO 14 BITS) OVER
SPECIFIED TEMPERATURE RANGE
q HERMETICALLY SEALED
q LOW COST PLASTIC VERSIONS
AVAILABLE (DAC707JP/KP)
Data is written into a 16-bit latch and subsequently the
D/A latch. The DAC707 has bipolar voltage output
and input coding is Binary Two’s Complement (BTC).
All models have Write and Clear control lines as well
as input latch enable lines. In addition, DAC708 and
DAC709 have Chip Select control lines. In the bipolar
mode, the Clear input sets the D/A latch to give zero
voltage or current output. They are all 14-bit accurate
and are complete with reference, and for the DAC707,
and DAC709, a voltage output amplifier. All models
are available with an optional burn-in screening.
8-Bit
(DAC708, 709)
or
16-Bit (DAC707)
Serial
(DAC708, 709)
Serial
Data
High
Byte
Latch
Low
Byte
Latch
D/A
Latch
16-Bit
D/A
Con-
verter
Reference
Circuit
Bipolar
Offset
Summing Junction (708, 709)
10V Range (708, 709)
V_OUT
Latch Enables/
Mode Select
CLEAR
WRITE
CHIP SELECT
Control
Logic
DAC707 or DAC709
Only
DAC707/708/709 Block Diagram
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PDS-557H