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AD5405YCP-REEL7 Datasheet

  • AD5405YCP-REEL7

  • Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant...

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Dual 12-Bit, High Bandwidth, Multiplying DAC with
4-Quadrant Resistors and Parallel Interface
AD5405
FEATURES
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
鹵10 V reference input
Extended temperature range:
鈭?0擄C
to 125擄C
40-lead LFCSP package
Guaranteed monotonic
4-quadrant multiplication
Power-on reset
Readback function
.5 碌A typical current consumption
GENERAL DESCRIPTION
The AD5405
1
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
other applications.
The applied external reference input voltage (V
REF
) determines
the full-scale output current. An integrated feedback resistor
(R
FB
) 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 脳 6 mm, 40-lead LFCSP package.
APPLICATIONS
Portable battery-powered applications
Waveform generators
Analog processing
Instrumentation applications
Programmable amplifiers and attenuators
Digitally-controlled calibration
Programmable filters and oscillators
Composite video
Ultrasound
Gain, offset, and voltage trimming
R3A
R3
2R
R2_3A
R2
2R
R2A
1
US Patent Number 5,689,257.
V
REF
A R1A
AD5405
V
DD
DATA
INPUTS
DB0
DB11
INPUT
BUFFER
R1
2R
RFB
2R
R
FB
A
LATCH
12-BIT
R-2R DAC A
I
OUT
1A
I
OUT
2A
DAC A/B
CS
R/W
LATCH
LDAC
POWER-ON
RESET
CONTROL
LOGIC
12-BIT
R-2R DAC B
I
OUT
1B
I
OUT
2B
R
FB
B
04463-0-001
GND
R3
2R
R3B
R2_3B
R2
2R
R2B
R1
2R
V
REF
B R1B
RFB
2R
Figure 1. AD5405 Functional Block Diagram
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703
漏 2004 Analog Devices, Inc. All rights reserved.

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