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參數(shù)資料
| 型號： | AD5754R |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Quad 12-Bit Serial Input Unipolar/Bipolar Voltage Output DAC |
| 中文描述： | 四路12位串行輸入單極性/雙極性電壓輸出DAC |
| 文件頁數(shù)： | 1/20頁 |
| 文件大?。?/td> | 405K |
| 代理商： | AD5754R |
Quad, 12-Bit, Serial Input,
Unipolar/Bipolar, Voltage Output DAC
AD5726
FEATURES
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
Fax: 781.461.3113
2007 Analog Devices, Inc. All rights reserved.
www.analog.com
+5 V to ±15 V operation
Unipolar or bipolar operation
±1 LSB maximum INL error, ±1 LSB maximum DNL error
Guaranteed monotonic over temperature
Double-buffered inputs
Simultaneous updating via LDAC
Asynchronous CLR to zero scale/midscale
Operating temperature range: 40°C to +125°C
i
CMOS process technology
1
APPLICATIONS
Industrial automation
Closed-loop servo control, process control
Automotive test and measurement
Programmable logic controllers
GENERAL DESCRIPTION
The AD5726 is a quad, 12-bit, serial input, voltage output
digital-to analog converter that offers guaranteed monotonicity
and integral nonlinearity (INL) of ±1 LSB maximum.
Output voltage swing is set by two reference inputs, V
REFP
and
V
REFN
. The DAC offers a unipolar positive output range when
the V
REFN
input is set to 0 V and the V
REFP
input is set to a positive
voltage. A similar configuration with V
REFP
at 0 V and V
REFN
at a
negative voltage provides a unipolar negative output range.
Bipolar outputs are configured by connecting both V
REFP
and
V
REFN
to nonzero voltages. This method of setting output voltage
ranges has advantages over the bipolar offsetting methods
because it is not dependent on internal and external resistors
with different temperature coefficients.
The AD5726 uses a serial interface that operates at clock rates up to
30 MHz and is compatible with DSP and microcontroller interface
standards. Double buffering allows simultaneous updating of all
DACs. The asynchronous CLR function clears all DAC registers
to a user-selectable, zero-scale or midscale output.
The AD5726 is available in 16-lead SSOP and 16-lead SOIC
packages. It can be operated from a wide variety of supply and
reference voltages with supplies ranging from single +5 V to
±15 V, and references ranging from +2.5 V to ±10 V. Power
dissipation is less than 240 mW with ±15 V supplies and only
30 mW with a +5 V supply. Operation is specified over the
temperature range of 40°C to +125°C.
Table 1. Related Devices
Part No.
AD5725
Description
Quad, 12-bit, parallel input,
unipolar/bipolar, voltage output DAC.
Complete, quad, 12-/14-/16-bit, serial
input, unipolar/bipolar voltage output
DAC with internal reference.
Complete, dual, 12-/14-/16-bit, serial
input, unipolar/bipolar voltage output
DAC with internal reference.
AD5724R/AD5734R/
AD5754R
AD5722R/AD5732R/
AD5752R
FUNCTIONAL BLOCK DIAGRAM
AV
DD
AV
SS
DAC C
DAC D
DAC B
DAC A
GND
AD5726
12
V
OUTA
12
V
OUTB
12
V
OUTC
12
12
12
12
12
V
OUTD
CLRSEL
12
I/O
REGISTER
AND
CONTROL
LOGIC
V
REFP
SDIN
SCLK
CS
V
REFN
LDAC
CLR
INPUT
REG A
INPUT
REG B
INPUT
REG C
INPUT
REG D
DAC
REG A
DAC
REG B
DAC
REG C
DAC
REG D
0
Figure 1.
1
For analog systems designers within industrial/instrumentation equipment OEMs who need high performance ICs at higher-voltage levels,
i
CMOS is a technology
platform that enables the development of analog ICs capable of 30 V and operating at ±15 V supplies while allowing dramatic reductions in power consumption and
package size, and increased ac and dc performance.
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