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Analog Devices Semiconductor Electronic Components Datasheet

AD5282 Datasheet

+15V/ I2C Compatible Digital Potentiometers

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AD5282 pdf
PRELIMINARY TECHNICAL DATA
a
+15V, I2C Compatible
Digital Potentiometers
Preliminary Technical Data
AD5280/AD5282
FEATURES
256 Position
AD5280 – 1-Channel
AD5282 – 2-Channel (Independently Programmable)
Potentiometer Replacement
20K, 50K, 200K Ohm with TC < 50ppm/ºC
Internal Power ON Mid-Scale Preset
+5 to +15V Single-Supply; ±5.5V Dual-Supply Operation
I2C Compatible Interface
APPLICATIONS
Multi-Media, Video & Audio
Communications
Mechanical Potentiometer Replacement
Instrumentation: Gain, Offset Adjustment
Programmable Voltage to Current Conversion
Line Impedance Matching
GENERAL DESCRIPTION
The AD5280/AD5282 provides a single/dual channel, 256 position
digitally-controlled variable resistor (VR) device. These devices
perform the same electronic adjustment function as a
potentiometer, trimmer or variable resistor. Each VR offers a
completely programmable value of resistance, between the A
terminal and the wiper, or the B terminal and the wiper. The fixed
A-to-B terminal resistance of 20, 50 or 200K ohms has a 1%
channel-to-channel matching tolerance with a nominal temperature
coefficient of 30 ppm/°C.
Wiper Position programming defaults to midscale at system power
ON. Once powered the VR wiper position is programmed by a I2C
compatible 2-wire serial data interface. Both parts have two
programmable logic outputs available to drive digital loads, gates,
LED drivers, analog switches, etc.
FUNCTIONAL BLOCK DIAGRAMS
A1 W1 B1
O1 O2
SHDN
VDD
VSS
VL
SCL
SDA
GND
RDAC1 REGISTER
R
RDAC2 REGISTER
R
ADDRESS
DECODE
AD5280
PWR ON
RESET
8
SERIAL INPUT REGISTER
AD0 AD1
A1 W1 B1
A2 W2 B2
O1
SHDN
VDD
VSS
VL
SCL
SDA
GND
RDAC1 REGISTER
R
RDAC2 REGISTER
R
ADDRESS
DECODE
AD5282
PWR ON
RESET
8
SERIAL INPUT REGISTER
OUTPUT
REGISTER
R
AD0 AD1
The AD5280/AD5282 are available in ultra compact surface mount
thin TSSOP-14/-16 packages. All parts are guaranteed to operate
over the extended industrial temperature range of -40°C to +85°C.
For 3-wire, SPI compatible interface applications, see
AD5203/AD5204/AD5206/AD7376/AD8400/AD8402/AD8403/
AD5260/AD5262/AD5200/AD5201 products.
Model
AD5280BRU20
AD5280BRU50
AD5280BRU200
ORDERING GUIDE
Kilo
Ohms Temp
Package
Description
20 -40/+85°C TSSOP-14
50 -40/+85°C TSSOP-14
200 -40/+85°C TSSOP-14
Package
Option
RU-14
RU-14
RU-14
AD5282BRU20
AD5282BRU50
AD5282BRU200
20
50
200
-40/+85°C
-40/+85°C
-40/+85°C
TSSOP-16
TSSOP-16
TSSOP-16
RU-16
RU-16
RU-16
The AD5280/AD5282 die size is 75 mil X 120 mil, 9,000 sq. mil.
Contains xxx transistors. Patent Number xxx applies.
REV PrE 12 MAR 02
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 which may result from its use. No license is granted by
implication or otherwise under any patent or patent rights of Analog Devices.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106 U.S.A.
Tel: 781/329-4700
www.analog.com
Fax: 781/326-8703
©Analog Devices, Inc., 2002


Analog Devices Semiconductor Electronic Components Datasheet

AD5282 Datasheet

+15V/ I2C Compatible Digital Potentiometers

No Preview Available !

AD5282 pdf
PRELIMINARY TECHNICAL DATA
AD5280/AD5282
ELECTRICAL CHARACTERISTICS 20K, 50K, 200K OHM VERSION (VDD = +5V, VSS = -5V, VLOGIC = +5V,
VA = +VDD, VB = 0V, -40°C < TA < +85°C unless otherwise noted.)
Parameter
Symbol Conditions
Min Typ1 Max
Units
DC CHARACTERISTICS RHEOSTAT MODE Specifications apply to all VRs
Resistor Differential NL2
Resistor Nonlinearity2
Nominal resistor tolerance3
Resistance Temperature Coefficient
Wiper Resistance
R-DNL
R-INL
R
RAB/T
RW
RWB, VA=NC
RWB, VA=NC
TA = 25°C
VAB = VDD, Wiper = No Connect
IW = VDD /R, VDD = +3V or +5V
-1 ±0.4 +1
-1 ±0.5 +1
-30 30
30
40 100
LSB
LSB
%
ppm/°C
DC CHARACTERISTICS POTENTIOMETER DIVIDER MODE Specifications apply to all VRs
Resolution
Integral Nonlinearity4
Integral Nonlinearity4
Differential Nonlinearity4
Voltage Divider Temperature Coefficient
Full-Scale Error
Zero-Scale Error
N
INL
INL
DNL
VW/T
VWFSE
VWZSE
Code = 80H
Code = FFH
Code = 00H
RAB=20K, 50K
RAB=200K
8
–1 ±0.5 +1
–2 ±0.5 +2
–1 ±0.4 +1
5
–1 -0.5 +0
0 +0.5 +1
Bits
LSB
LSB
LSB
ppm/°C
LSB
LSB
RESISTOR TERMINALS
Voltage Range5
Capacitance6 A, B
Capacitance6 W
Common Mode Leakage
VA,B,W
CA,B
CW
ICM
f = 1 MHz, measured to GND, Code = 80H
f = 1 MHz, measured to GND, Code = 80H
VA = VB = VW
VSS VDD
45
60
1
V
pF
pF
nA
DIGITAL INPUTS
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Logic High
Input Logic Low
Input Current
Input Capacitance6
VIH
SDA & SCL 0.7VLOGIC
VLOGIC+0.5
V
VIL
SDA & SCL
-0.5
0.3VLOGIC
V
VIH
AD0 & AD1
2.4
VLOGIC
V
VIL
AD0 & AD1
0
0.8 V
VIH VLOGIC = +3V, AD0 & AD1
2.1
VLOGIC
V
VIL VLOGIC = +3V, AD0 & AD1
0 0.6 V
IIL VIN = 0V or +5V
±1 µA
CIL 3 pF
DIGITAL Output
O1, O2
O1, O2
SDA
SDA
Three-State Leakage Current
Output Capacitance6
VOH IOH=0.4mA
VOL IOL=-1.6mA
VOL IOL = -6mA
VOL IOL = -3mA
IOZ VIN = 0V or +5V
COZ
2.4 5.5
0 0.4
0.6
0.4
±1
38
V
V
V
V
µA
pF
POWER SUPPLIES
Logic Supply
Power Single-Supply Range
Power Dual-Supply Range
Logic Supply Current
Positive Supply Current
Negative Supply Current
Power Dissipation10
Power Supply Sensitivity
VLOGIC
VDD RANGE VSS = 0V
VDD/SS RANGE
ILOGIC
VLOGIC = +5V
IDD VIH = +5V or VIL = 0V
ISS
PDISS
VIH = +5V or VIL = 0V, VDD = +5V, VSS = -5V
PSS
+2.7 +5.5
+5 +15
±4.5 ±5.5
10
20 60
20 60
0.2 0.6
0.05 0.015
V
V
V
µA
µA
µA
mW
%/%
2 REV PrE 12 MAR 02
Information contained in this Product Concept Data Sheet describes a product in the early definition stage. There is no guarantee that the information contained here will become a final
product in its present form. For latest information contact Walt Heinzer/Analog Devices, Santa Clara, CA. TEL 408 382-3107; FAX 408 382-2721; email; walt.heinzer@analog.com


Part Number AD5282
Description +15V/ I2C Compatible Digital Potentiometers
Maker Analog Devices
Total Page 10 Pages
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