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AD5174BCPZ-10-RL7 データシート(PDF) 1 Page - Analog Devices

部品番号 AD5174BCPZ-10-RL7
部品情報  Single-Channel, 1024-Position, Digital Rheostat with SPI Interface and 50-TP Memory
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メーカー  AD [Analog Devices]
ホームページ  http://www.analog.com
Logo AD - Analog Devices

AD5174BCPZ-10-RL7 データシート(HTML) 1 Page - Analog Devices

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Single-Channel, 1024-Position, Digital Rheostat
with SPI
Interface and 50-TP Memory
AD5174
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringementsof patentsorother
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2010 Analog Devices, Inc. All rights reserved.
FEATURES
Single-channel, 1024-position resolution
10 kΩ nominal resistance
50-times programmable (50-TP) wiper memory
Rheostat mode temperature coefficient: 35 ppm/°C
2.7 V to 5.5 V single-supply operation
±2.5 V to ±2.75 V dual-supply operation for ac or bipolar
operations
SPI-compatible interface
Wiper setting and memory readback
Power on refreshed from memory
Resistor tolerance stored in memory
Thin LFCSP 10-lead, 3 mm × 3 mm× 0.8 mm package
Compact MSOP, 10-lead, 3 mm × 4.9 mm × 1.1 mm package
APPLICATIONS
Mechanical rheostat replacements
Op-amp: variable gain control
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversions
Programmable filters, delays, time constants
Programmable power supply
Sensor calibration
FUNCTIONAL BLOCK DIAGRAM
10
VDD
VSS
EXT_CAP
GND
A
W
AD5174
SCLK
DIN
SDO
SPI
SERIAL
INTERFACE
POWER-ON
RESET
RDAC
REGISTER
50-TP
MEMORY
BLOCK
SYNC
Figure 1.
GENERAL DESCRIPTION
The AD5174 is a single-channel, 1024-position digital rheostat
that combines industry leading variable resistor performance
with nonvolatile memory (NVM) in a compact package.
This device supports both dual-supply operation at ±2.5 V to
±2.75 V and single-supply operation at 2.7 V to 5.5 V and offers
50-times programmable (50-TP) memory.
The AD5174 device wiper settings are controllable through the
SPI digital interface. Unlimited adjustments are allowed before
programming the resistance value into the 50-TP memory. The
AD5174 does not require any external voltage supply to facili-
tate fuse blow and there are 50 opportunities for permanent
programming. During 50-TP activation, a permanent blow fuse
command freezes the resistance position (analogous to placing
epoxy on a mechanical rheostat).
The AD5174 is available in a 3 mm × 3mm 10-lead LFCSP
package and in a 10-lead MSOP package. The part is guaranteed
to operate over the extended industrial temperature range of
−40°C to +125°C.


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