MP7626
Microprocessor Compatible
Buffered Multiplying 16-Bit
Digital-to-Analog Converter
FEATURES
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Four Quadrant Multiplication
16-Bit Monotonicity
Low Power Consumption
TTL/5 V CMOS Compatible
Single-Buffered or Transparent Data inputs
Decoded DAC Approach
Latch-Up Free
8-Bit Bus Version: MP7636A
APPLICATIONS
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Digitally Programmable References
Programmable Audio Attenuator
High Accuracy Process Control Systems
Automatic Test Equipment
Easy Interface to 8 and 16-Bit
Microprocessor Buses
GENERAL DESCRIPTION
The MP7626 is a CMOS 16-bit Digital-to-Analog Converter
(DAC) that is manufactured using advanced thin film resistors
on a double metal CMOS process. It incorporates a unique bit
decoding technique yielding lower glitch, higher speed and
excellent accuracy over temperature and time. 16 bit differential
non-linearity is achieved with minimal trimming.
Two 8-bit latches (MSB latch and LSB latch) hold the 16-bit
data which are converted by the DAC. A 16-bit bus can load
both latches in one cycle. An 8-bit bus loads one latch at a time.
By making the latches transparent (MSB latch = LSB latch =
High) the DAC will continuously convert the BIT1 - BIT16 inputs.
SIMPLIFIED BLOCK AND TIMING DIAGRAM
V
REF
V
DD
DB15-DB8
MSB Latch
D
Q
Latch
E
8
16
16
R
FB
16-Bit
Multiplying
DAC
DATA
LATCH
I
OUT1
I
OUT2
OUTPUT
DB7-DB0
LSB Latch
D
Q
Latch
E
8
GND
Rev. 2.00
1
EXAR [ EXAR CORPORATION ]
