5 V, 12-Bit nanoDAC, Serial Interface
in MSOP and LFCSP Packages
AD5626
Rev. A
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FEATURES
8-lead MSOP and 8-lead LFCSP packages
Complete voltage output with internal reference
1 mV/bit with 4.095 V full scale
5 V single-supply operation
No external components required
3-wire serial interface, 20 MHz data loading rate
Low power: 2.5 mW
APPLICATIONS
Portable instrumentation
Digitally controlled calibration
Servo controls
Process control equipment
PC peripherals
GENERAL DESCRIPTION
The AD5626, a member of the nanoDAC® family, is a complete
serial input, 12-bit, voltage output digital-to-analog converter
(DAC) designed to operate from a single 5 V supply. It contains
the DAC, input shift register and latches, reference, and a rail-
to-rail output amplifier. The AD5626 monolithic DAC offers
the user low cost and ease of use in 5 V only systems.
Coding for the AD5626 is natural binary with the MSB loaded
first. The output op amp can swing to either rail and is set to a
range of 0 V to 4.095 V for a one-millivolt-per-bit resolution. It
is capable of sinking and sourcing 5 mA. An on-chip reference
is laser trimmed to provide an accurate full-scale output voltage
of 4.095 V.
This part features a serial interface that is high speed, three-
wire, DSP compatible with data in (SDIN), clock (SCLK), and
load strobe (
LDAC
). There is also a chip-select pin for
connecting multiple DACs.
The
CLR
input sets the output to zero scale at power on or upon
user demand.
The AD5626 is specified over the extended industrial tempera-
ture range (–40°C to +85°C). The AD5626 is available in MSOP
and LFCSP surface-mount packages.
FUNCTIONAL BLOCK DIAGRAM
06757-001
REF
DAC REGISTER
AD5626
INPUT
REGISTER
12-BIT DAC
OUTPUT
BUFFER
LDAC
V
OU
CLR
CS SCLK SDIN GND
DD
Figure 1.
