PRELIMINARY TECHNICAL DATA
8/10/12/14-BitHighBandwidth
a
MultiplyingDACs withSerialInterface
AD5450/AD5451/AD5452/AD5453*
Preliminary Technical Data
FEATURES
F U NC T IO NAL B LO C K D IAG RAM
+2.5 V to +5.5 V Supply Operation
50MHz Serial Interface
10MHz Multiplying Bandw idth
±10V Reference Input
8-Lead TSOT & MSOP Packages
Pin Com patible 8, 10, 12 and 14 Bit Current Output DACs
Extended Tem perature range –40°C to +125°C
Guaranteed Monotonic
V
V
REF
DD
R
FB
R
AD5450/
8/10/12/14
BIT
R-2R DAC
AD5451/
AD5452/
AD5453
I
OUT1
DAC REGISTER
INPUT LATCH
Four Quadrant Multiplication
Pow er On Reset w ith brow n out detect
<5µA typical Current Consum ption
Power On
Reset
APPLICATIONS
Portable Battery Pow ered Applications
Waveform Generators
SYNC
SCLK
SDIN
CONTROL LOGIC &
INPUT SHIFT REGISTER
Analog Processing
GND
Instrum entation Applications
Program m able Am plifiers and Attenuators
Digitally-Controlled Calibration
Program m able Filters and Oscillators
Com posite Video
Ultrasound
Gain, offset and Voltage Trim m ing
G E NE R AL D E S C R IP T IO N
T he AD 5450/AD 5451/AD 5452/AD 5453 are C M OS 8,
10, 12 and 14-bit Current Output digital-to-analog
converters respectively.
T he 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
Current to Voltage precision amplifier.
T hese devices operate from a +2.5 V to 5.5 V power sup-
ply, making them suited to battery powered applications
and many other applications.
T he AD 5450/AD 5451/AD 5452/AD 5453 D AC s are
available in small 8-lead T SOT & MSOP packages.
T hese DACs utilize double buffered 3-wire serial interface
that is compatible with SPIT M, QSPIT M, MICROWIRET M
and most DSP interface standards.
On power-up, the internal shift register and latches are
filled with zeros and the DAC output is at zero scale.
As a result of manufacture on a CMOS sub micron
process, they offer excellent four quadrant multiplication
characteristics, with large signal multiplying bandwidths
of 10M H z.
*US Patent N umber 5,689,257
SPI and QSPI are trademarks of Motorola, Inc.
M ICROWIRE is a trademark of N ational Semiconductor Corporation.
REV. PrD Oct, 2003
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