Dual 12-Bit, High Bandwidth, Multiplying DAC with
4-Quadrant Resistors and Parallel Interface
On chip 4-quadrant resistors allow flexible output ranges
10 MHz multiplying bandwidth
Fast parallel interface write cycle: 58 MSPS
2.5 V to 5.5 V supply operation
±10 V reference input
Extended temperature range: −40°C to 125°C
40-lead LFCSP package
.5 µA typical current consumption
Portable battery-powered applications
Programmable amplifiers and attenuators
Programmable filters and oscillators
Gain, offset, and voltage trimming
The AD54051 is a dual CMOS, 12-bit, current output digital-
to-analog converter (DAC).This device operates from a 2.5 V to
5.5 V power supply, making it suited to battery-powered and
The applied external reference input voltage (VREF) determines
the full-scale output current. An integrated feedback resistor
(RFB) provides temperature tracking and full-scale voltage
output when combined with an external I-to-V precision
amplifier. This device also contains all the 4-quadrant resistors
necessary for bipolar operation and other configuration modes.
This DAC utilizes data readback, allowing the user to read the
contents of the DAC register via the DB pins. On power-up, the
internal register and latches are filled with zeros and the DAC
outputs are at zero scale.
As a result of manufacture with a CMOS submicron process, the
device offers excellent 4-quadrant multiplication characteristics,
with large signal multiplying bandwidths of up to 10 MHz.
The AD5405 has a 6 mm × 6 mm, 40-lead LFCSP package.
1 US Patent Number 5,689,257.
R3A R2_3A R2A
R-2R DAC A
R-2R DAC B
R3B R2_3B R2B VREFB R1B
Figure 1. AD5405 Functional Block Diagram
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