AD5161BRMZ100 Analog Devices Inc, AD5161BRMZ100 Datasheet

IC DGTL POT SPI 100K 10-MSOP

AD5161BRMZ100

Manufacturer Part Number
AD5161BRMZ100
Description
IC DGTL POT SPI 100K 10-MSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5161BRMZ100

Temperature Coefficient
45 ppm/°C Typical
Taps
256
Resistance (ohms)
100K
Number Of Circuits
1
Memory Type
Volatile
Interface
I²C, SPI
Voltage - Supply
2.7 V ~ 5.5 V
Operating Temperature
-40°C ~ 125°C
Mounting Type
Surface Mount
Package / Case
10-MSOP, Micro10™, 10-uMAX, 10-uSOP
Resistance In Ohms
100K
End To End Resistance
100kohm
No. Of Steps
256
Resistance Tolerance
± 30%
Supply Voltage Range
2.7V To 5.5V
Control Interface
Serial, I2C
No. Of Pots
Single
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5161BRMZ100
Manufacturer:
ADI
Quantity:
3 480
Part Number:
AD5161BRMZ100
Manufacturer:
ADI/亚德诺
Quantity:
20 000
FEATURES
256-position
End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ
Compact MSOP-10 (3 mm × 4.9 mm) package
Pin selectable SPI/I
Extra package address decode pin AD0
Full read/write of wiper register
Power-on preset to midscale
Single supply 2.7 V to 5.5 V
Low temperature coefficient 45 ppm/°C
Low power, I
Wide operating temperature −40°C to +125°C
SDO output allows multiple device daisy-chaining
Evaluation board available
APPLICATIONS
Mechanical potentiometer replacement in new designs
Transducer adjustment of pressure, temperature, position,
RF amplifier biasing
Automotive electronics adjustment
Gain control and offset adjustment
GENERAL DESCRIPTION
The AD5161 provides a compact 3 mm × 4.9 mm packaged
solution for 256-position adjustment applications. These
devices perform the same electronic adjustment function as
mechanical potentiometers or variable resistors, with enhanced
resolution, solid-state reliability, and superior low temperature
coefficient performance.
The wiper settings are controllable through a pin selectable SPI
or I
read back the wiper register content. When the SPI mode is
used, the device can be daisy-chained (SDO to SDI), allowing
several parts to share the same control lines. In the I
address pin AD0 can be used to place up to two devices on the
same bus. In this same mode, command bits are available to
reset the wiper position to midscale or to shut down the device
into a state of zero power consumption.
Operating from a 2.7 V to 5.5 V power supply and consuming
less than 5 μA allows for usage in portable battery-operated
applications.
Rev. A
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.
chemical, and optical sensors
2
C compatible digital interface, which can also be used to
DD
= 8 μA
2
C compatible interface
2
C mode,
256-Position SPI/I
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
SDI/SDA
CLK/SCL
CS/AD0
DIS
FUNCTIONAL BLOCK DIAGRAM
SDI/SDA
CS/ADO
SDO/NC
Digital Potentiometer
©2003–2009 Analog Devices, Inc. All rights reserved.
PIN CONFIGURATION
INTERFACE
A
B
REGISTER
SPI OR I
V
WIPER
DD
1
2
3
4
5
GND
(Not to Scale)
AD5161
TOP VIEW
2
Figure 1.
Figure 2.
C
SDO/NC
2
C Selectable
10
9
8
7
6
W
V
DIS
GND
CLK/SCL
DD
AD5161
www.analog.com
W
A
B

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AD5161BRMZ100 Summary of contents

Page 1

FEATURES 256-position End-to-end resistance 5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ Compact MSOP- × 4.9 mm) package 2 Pin selectable SPI/I C compatible interface Extra package address decode pin AD0 Full read/write of wiper register Power-on preset ...

Page 2

AD5161 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Pin Configuration ............................................................................. 1 Revision History ............................................................................... 2 Electrical Characteristics—5 kΩ Version ...................................... 3 Electrical Characteristics—10 kΩ, 50 kΩ, 100 kΩ ...

Page 3

ELECTRICAL CHARACTERISTICS—5 kΩ VERSION ± 10 ± 10 Table 1. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity Nominal Resistor Tolerance 3 Resistance Temperature ...

Page 4

AD5161 ELECTRICAL CHARACTERISTICS—10 kΩ, 50 kΩ, 100 kΩ VERSIONS ± 10 ± 10 Table 2. Parameter DC CHARACTERISTICS—RHEOSTAT MODE 2 Resistor Differential Nonlinearity 2 Resistor Integral Nonlinearity Nominal ...

Page 5

TIMING CHARACTERISTICS—5 kΩ, 10 kΩ, 50 kΩ, 100 kΩ VERSIONS V = +5V ± 10%, or +3V ± 10 Table 3. Parameter SPI INTERFACE TIMING CHARACTERISTICS Clock Frequency Input Clock Pulsewidth Data Setup Time Data ...

Page 6

AD5161 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 4. Parameter V to GND GND MAX Digital Inputs and Output Voltage to GND Operating Temperature ...

Page 7

PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. Pin Function Description Pin No. Mnemonic Description Terminal Terminal /AD0 Chip Select ( CS ) Input, Active Low. When CS returns high, data will be ...

Page 8

AD5161 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1 128 160 CODE (Decimal) Figure 4. R-INL vs. Code vs. Supply Voltages 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 ...

Page 9

CODE (Decimal) Figure 10. R-INL vs. Code 1.0 0.8 0.6 0.4 0.2 0 –0.2 –0.4 –0.6 –0.8 –1.0 ...

Page 10

AD5161 200 150 100 50 0 – 128 CODE (Decimal) Figure 16. Rheostat Mode Tempco ∆R 160 140 120 100 – 128 160 CODE (Decimal) Figure 17. ...

Page 11

REF LEVEL /DIV –5.000dB 0.500dB –5.5 5kΩ – 1.026 MHz –6.0 10kΩ – 511 MHz 50kΩ – 101 MHz –6.5 100kΩ – 54 MHz –7.0 –7.5 –8.0 –8 50kΩ 5kΩ –9 10kΩ ...

Page 12

AD5161 TEST CIRCUITS Figure 28 to Figure 36 illustrate the test circuits that define the test conditions used in the product specification tables. DUT 1LSB = V+/ Figure 28. Test Circuit for ...

Page 13

SPI INTERFACE Table 6. AD5161 Serial Data-Word Format MSB SDI (DATA IN CLK VOUT 0 Figure 38. SPI Interface ...

Page 14

AD5161 INTERFACE Table 7. Write Mode AD0 W Slave Address Byte Table 8. Read Mode Slave Address Byte S = Start Condition P = ...

Page 15

THEORY OF OPERATION The AD5161 is a 256-position digitally controlled variable 1 resistor (VR) device. An internal power-on preset places the wiper at midscale during power-on, which simplifies the fault condition recovery at power-up. PROGRAMMING THE VARIABLE RESISTOR Rheostat Operation ...

Page 16

AD5161 PROGRAMMING THE POTENTIOMETER DIVIDER Voltage Output Operation The digital potentiometer easily generates a voltage divider at wiper-to-B and wiper-to-A proportional to the input voltage at A-to-B. Unlike the polarity GND, which must be DD positive, voltage ...

Page 17

The slave whose address corresponds to the transmitted address responds by pulling the SDA line low during the ninth clock pulse (this is termed the acknowledge bit). At this stage, all other devices on the bus remain idle while the ...

Page 18

AD5161 LEVEL SHIFTING FOR BIDIRECTIONAL INTERFACE While most legacy systems may be operated at one voltage, a new component may be optimized at another. When two systems operate the same signal at two different voltages, proper level shifting is needed. ...

Page 19

... AD5161BRM100 100k AD5161BRM100-RL7 100k 1 AD5161BRMZ100 100k 1 AD5161BRMZ100-RL7 100k 2 AD5161EVAL See Note RoHS Compliant Part, # denotes RoHS compliant part may be top or bottom marked. 2 The evaluation board is shipped with the 10 kΩ R The AD5161 contains 2532 transistors. Die size: 30.7 mil × 76.8 mil = 2358 sq. mil. ...

Page 20

AD5161 NOTES 2 Purchase of licensed I C components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I Rights to use these components system, ...

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