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EVAL-AD5415EB

更新时间： 2024-09-27 22:16:23
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亚德诺 - ADI /
页数 文件大小 规格书
28页 1081K
描述
Dual 12-Bit, High Bandwidth, Multiplying DAC with 4-Quadrant Resistors and Serial Interface

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EVAL-AD5415EB 数据手册

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Dual 12-Bit, High Bandwidth, Multiplying DAC  
with 4-Quadrant Resistors and Serial Interface  
AD5415  
FEATURES  
GENERAL DESCRIPTION  
On-chip 4-quadrant resistors allow flexible output ranges  
10 MHz multiplying bandwidth  
50 MHz serial interface  
2.5 V to 5.5 V supply operation  
10 V reference input  
The AD54151 is a CMOS 12-bit, dual-channel, current output  
digital-to-analog converter. This device operates from a 2.5 V to  
5.5 V power supply, making it suited to battery-powered appli-  
cations as well as many other applications.  
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 current-to-voltage  
precision amplifier. In addition, this device contains all the  
4-quadrant resistors necessary for bipolar operation and other  
configuration modes.  
Extended temperature range: −40°C to +125°C  
24-lead TSSOP package  
Guaranteed monotonic  
Power-on reset  
Daisy-chain mode  
Readback function  
0.5 µA typical current consumption  
This DAC utilizes a double-buffered 3-wire serial interface that  
is compatible with SPI®, QSPI™, MICROWIRE™, and most DSP  
interface standards. In addition, a serial data out pin (SDO)  
allows for daisy-chaining when multiple packages are used.  
Data readback allows the user to read the contents of the DAC  
register via the SDO pin. On power-up, the internal shift  
register and latches are filled with zeros, and the DAC outputs  
are at zero scale. As a result of manufacture on a CMOS submi-  
cron process, this part offers excellent 4-quadrant multiplication  
characteristics, with large-signal multiplying bandwidths of  
10 MHz.  
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  
1US Patent Number 5,689,257.  
FUNCTIONAL BLOCK DIAGRAM  
R3A  
R2_3A  
R2A  
V
A R1A  
REF  
R3  
2R  
R2  
2R  
R
R1  
2R  
FB  
2R  
AD5415  
V
DD  
R
A
FB  
SYNC  
SCLK  
SDIN  
I
I
1A  
2A  
OUT  
12-BIT  
R-2R DAC A  
INPUT  
REGISTER  
DAC  
REGISTER  
SHIFT  
REGISTER  
OUT  
SDO  
LDAC  
I
I
1B  
2B  
OUT  
12-BIT  
R-2R DAC B  
INPUT  
REGISTER  
DAC  
REGISTER  
OUT  
POWER-ON  
RESET  
CLR  
GND  
R
B
FB  
R1  
2R  
R
FB  
2R  
R3  
2R  
R2  
2R  
R3B  
R2_3B  
R2B  
V
B R1B  
REF  
Figure 1.  
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: 781.326.8703  
www.analog.com  
© 2004 Analog Devices, Inc. All rights reserved.  
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