EVAL-AD5143DBZ Analog Devices, EVAL-AD5143DBZ Datasheet

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EVAL-AD5143DBZ

Manufacturer Part Number
EVAL-AD5143DBZ
Description
Digital Potentiometer Development Tools EVALUATION BOARD I.C.
Manufacturer
Analog Devices
Series
AD5143r
Datasheet

Specifications of EVAL-AD5143DBZ

Rohs
yes
Product
Evaluation Boards
Tool Is For Evaluation Of
AD5143
Resistance
10 kOhms/100 kOhms
Operating Supply Voltage
5.5 V
Interface Type
I2C
Maximum Operating Temperature
+ 125 C
Factory Pack Quantity
1
Data Sheet
FEATURES
10 kΩ and 100 kΩ resistance options
Resistor tolerance: 8% maximum
Wiper current: ±6 mA
Low temperature coefficient: 35 ppm/°C
Wide bandwidth: 3 MHz
Fast start-up time < 75 μs
Linear gain setting mode
Single- and dual-supply operation
Wide operating temperature: −40°C to +125°C
3 mm × 3 mm package
4 kV ESD protection
APPLICATIONS
Portable electronics level adjustment
LCD panel brightness and contrast controls
Programmable filters, delays, and time constants
Programmable power supplies
GENERAL DESCRIPTION
The
solution for 128-/256-position adjustment applications, offering
guaranteed low resistor tolerance errors of ±8% and up to ±6 mA
current density in the Ax, Bx, and Wx pins.
The low resistor tolerance and low nominal temperature coefficient
simplify open-loop applications as well as applications requiring
tolerance matching.
The linear gain setting mode allows independent programming
of the resistance between the digital potentiometer terminals,
through the R
resistor matching.
The high bandwidth and low total harmonic distortion (THD)
ensure optimal performance for ac signals, making the devices
suitable for filter design.
The low wiper resistance of only 40 Ω at the ends of the resistor
array allows for pin-to-pin connection.
The wiper values can be set through an I
interface that is also used to read back the wiper register and
EEPROM contents.
The
3 mm LFCSP. The parts are guaranteed to operate over the extended
industrial temperature range of −40°C to +125°C.
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.
AD5123/AD5143
AD5123/AD5143
AW
and R
are available in a compact, 16-lead, 3 mm ×
potentiometers provide a nonvolatile
WB
string resistors, allowing very accurate
2
C-compatible digital
Document Feedback
Quad Channel, 128-/256-Position, I
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Technical Support
Table 1. Family Models
Model
AD5123
AD5124
AD5124
AD5143
AD5144
AD5144
AD5144A
AD5122
AD5122A
AD5142
AD5142A
AD5121
AD5141
1
Nonvolatile Digital Potentiometer
Two potentiometers and two rheostats.
ADDR
SDA
SCL
1
FUNCTIONAL BLOCK DIAGRAM
Channel
Quad
Quad
Quad
Quad
Quad
Quad
Quad
Dual
Dual
Dual
Dual
Single
Single
POWER-ON
INTERFACE
GND
SERIAL
RESET
V
DD
©2012–2013 Analog Devices, Inc. All rights reserved.
V
SS
7/8
Position
128
128
128
256
256
256
256
128
128
256
256
128
256
Figure 1.
AD5123/AD5143
REGISTER 1
REGISTER 2
REGISTER 3
REGISTER 4
AD5123/AD5143
MEMORY
EEPROM
RDAC1
RDAC2
RDAC3
RDAC4
INPUT
INPUT
INPUT
INPUT
I
SPI/I
SPI
I
SPI/I
SPI
I
SPI
I
SPI
I
SPI/I
SPI/I
Interface
2
2
2
2
2
C
C
C
C
C
2
2
2
2
C
C
C
C
www.analog.com
Package
LFCSP
LFCSP
TSSOP
LFCSP
LFCSP
TSSOP
TSSOP
LFCSP/TSSOP
LFCSP/TSSOP
LFCSP/TSSOP
LFCSP/TSSOP
LFCSP
LFCSP
2
C,

Related parts for EVAL-AD5143DBZ

EVAL-AD5143DBZ Summary of contents

Page 1

... 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. ...

Page 2

AD5123/AD5143 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 Electrical Characteristics—AD5123 .......................................... 3 Electrical Characteristics—AD5143 .......................................... 6 Interface Timing Specifications .................................................. 9 Shift ...

Page 3

Data Sheet SPECIFICATIONS ELECTRICAL CHARACTERISTICS—AD5123 Table 2. Parameter DC CHARACTERISTICS—RHEOSTAT MODE (ALL RDACs) Resolution Resistor Integral Nonlinearity 2 ...

Page 4

AD5123/AD5143 Parameter RESISTOR TERMINALS Maximum Continuous Current Terminal Voltage Range 5 Capacitance A, Capacitance B 3 Capacitance W 3 Common-Mode Leakage Current 3 DIGITAL INPUTS Input Logic 3 High Low Input Hysteresis 3 Input Current 3 Input Capacitance 3 DIGITAL ...

Page 5

Data Sheet Parameter DYNAMIC CHARACTERISTICS 9 Bandwidth Total Harmonic Distortion Resistor Noise Density V Settling Time W Crosstalk ( Analog Crosstalk Endurance 10 Data Retention 11 1 Typical values represent average readings at 25°C, V Resistor ...

Page 6

AD5123/AD5143 ELECTRICAL CHARACTERISTICS—AD5143 Table 3. Parameter DC CHARACTERISTICS—RHEOSTAT MODE (ALL RDACs) Resolution Resistor Integral Nonlinearity 2 Resistor Differential ...

Page 7

Data Sheet Parameter RESISTOR TERMINALS Maximum Continuous Current Terminal Voltage Range 5 Capacitance A, Capacitance B 3 Capacitance W 3 Common-Mode Leakage Current 3 DIGITAL INPUTS Input Logic 3 High Low Input Hysteresis 3 Input Current 3 Input Capacitance 3 ...

Page 8

AD5123/AD5143 Parameter DYNAMIC CHARACTERISTICS 9 Bandwidth Total Harmonic Distortion Resistor Noise Density V Settling Time W Crosstalk ( Analog Crosstalk Endurance 10 Data Retention 11 1 Typical values represent average readings at 25°C, V Resistor integral ...

Page 9

Data Sheet INTERFACE TIMING SPECIFICATIONS 5.5 V; all specifications T DD Table Interface Parameter 1 Test Conditions/Comments f 2 Standard mode SCL Fast mode t Standard mode 1 Fast mode t ...

Page 10

AD5123/AD5143 SHIFT REGISTER AND TIMING DIAGRAMS DB15 (MSB CONTROL BITS t 2 SCL t 6 SDA DB8 DB7 ADDRESS BITS Figure 2. Input Shift Register Contents ...

Page 11

Data Sheet ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 5. Parameter V to GND GND GND ...

Page 12

AD5123/AD5143 PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 7. Pin Function Descriptions Pin No. Mnemonic Description 1 A1 Terminal A of RDAC1 Wiper Terminal of RDAC1 Terminal B of RDAC1 Wiper Terminal ...

Page 13

Data Sheet TYPICAL PERFORMANCE CHARACTERISTICS 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 –0.4 –0.5 0 100 CODE (Decimal) Figure 5. R-INL vs. Code (AD5143) 0.20 0.15 0.10 0.05 0 –0.05 –0.10 10kΩ, +125°C –0.15 10kΩ, +25°C 10kΩ, –40°C ...

Page 14

AD5123/AD5143 0.15 0.10 0.05 0 –0.05 –0.10 –0. CODE (Decimal) Figure 11. INL vs. Code (AD5123) 450 400 350 300 250 200 150 100 50 0 – 100 150 CODE (Decimal) Figure ...

Page 15

Data Sheet 0 0x80 (0x40) 0x40 (0x20) –10 0x20 (0x10) –20 0x10 (0x08) 0x8 (0x04) –30 0x4 (0x02) 0x2 (0x01) 0x1 (0x00) –40 0x00 –50 AD5143 (AD5123) –60 10 100 1k 10k 100k FREQUENCY (Hz) Figure 17. 10 kΩ Gain ...

Page 16

AD5123/AD5143 600 500 400 300 200 100 VOLTAGE (V) Figure 23. Incremental Wiper On Resistance vs. Positive Power Supply ( ...

Page 17

Data Sheet 0 10kΩ SHUTDOWN MODE ENABLED 100kΩ –20 –40 –60 –80 –100 –120 10 100 1k 10k FREQUENCY (Hz) Figure 29. Shutdown Isolation vs. Frequency 100k 1M 10M Rev ...

Page 18

AD5123/AD5143 TEST CIRCUITS Figure 31 to Figure 35 define the test conditions used in the Specifications section. NC DUT CONNECT Figure 31. Resistor Integral Nonlinearity Error (Rheostat Operation; R-INL, R-DNL) ...

Page 19

Data Sheet THEORY OF OPERATION The AD5123/AD5143 digital programmable potentiometers are designed to operate as true variable resistors for analog signals within the terminal voltage range of V < wiper position is determined by the RDAC register contents. ...

Page 20

AD5123/AD5143 Table 9. Reduced Commands Operation Truth Table Control Bits[DB15:DB12] Bits[DB11:DB8] Command Number ...

Page 21

Data Sheet ADVANCED CONTROL MODES The AD5123/AD5143 digital potentiometers include a set of user programming features to address the wide number of applications for these universal adjustment devices (see Table 15 and Table 17). Key programming features include the following: ...

Page 22

AD5123/AD5143 ±6 dB Increment and Decrement Instructions Two programming instructions produce logarithmic taper increment or decrement of the wiper position control by an individual potentiometer ganged potentiometer arrangement where all RDAC register positions are changed simultaneously. The ...

Page 23

Data Sheet Table 15. Advance Commands Operation Truth Table Control Bits[DB15:DB12] Command Number ...

Page 24

AD5123/AD5143 Table 17. Control Register Bit Descriptions Bit Name Description D0 RDAC register write protect 0 = wiper position frozen to value in EEPROM memory 1 = allows update of wiper position through digital interface (default) D1 EEPROM program enable ...

Page 25

... Data Sheet RDAC ARCHITECTURE To achieve optimum performance, Analog Devices, Inc., has patented the RDAC segmentation architecture for all the digital potentiometers. In particular, the AD5123/AD5143 three-stage segmentation approach, as shown in Figure 36. The AD5123/AD5143 wiper switch is designed with the transmission gate CMOS topology and with the gate voltage derived from ...

Page 26

AD5123/AD5143 In the bottom scale condition or top scale condition, a finite total wiper resistance of 40 Ω is present. Regardless of which setting the part is operating in, limit the current between Terminal A to Terminal B, Terminal W ...

Page 27

... SEATING PLANE ORDERING GUIDE 1, 2 Model R (kΩ) Resolution AB AD5123BCPZ10-RL7 10 128 AD5123BCPZ100-RL7 100 128 AD5143BCPZ10-RL7 10 256 AD5143BCPZ100-RL7 100 256 EVAL-AD5143DBZ RoHS Compliant Part. 2 The evaluation board is shipped with the 10 kΩ R 3.10 0.30 3.00 SQ 0.23 2.90 0.18 13 0.50 12 BSC EXPOSED PAD 9 8 0.50 TOP VIEW BOTTOM VIEW ...

Page 28

... AD5123/AD5143 NOTES refers to a communications protocol originally developed by Philips Semiconductors (now NXP Semiconductors). ©2012–2013 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D10878-0-3/13(A) Rev Page Data Sheet ...

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