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AD5207 Datasheet(PDF) 4 Page - Analog Devices

Part No. AD5207
Description  2-Channel, 256-Position Digital Potentiometer
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Maker  AD [Analog Devices]
Homepage  http://www.analog.com
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AD5207 Datasheet(HTML) 4 Page - Analog Devices

 
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REV. 0
AD5207
–4–
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection. Although
the AD5207 features proprietary ESD protection circuitry, permanent damage may occur on
devices subjected to high-energy electrostatic discharges. Therefore, proper ESD precautions are
recommended to avoid performance degradation or loss of functionality.
WARNING!
ESD SENSITIVE DEVICE
ABSOLUTE MAXIMUM RATINGS
1
(TA = 25
°C, unless otherwise noted)
VDD to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3, +7 V
VSS to GND . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0, –3 V
VDD to VSS . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
VA, VB, VW to GND . . . . . . . . . . . . . . . . . . . . . . . . . . VSS, VDD
IMAX
2 (A, B, W) . . . . . . . . . . . . . . . . . . . . . . . . . . . . .
±20 mA
Digital Inputs and Output Voltage to GND . . 0 V, VDD + 0.3 V
Operating Temperature Range . . . . . . . . . . –40
°C to +125°C
Maximum Junction Temperature (TJ Max) . . . . . . . . . . 150
°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65
°C to +150°C
Lead Temperature (Soldering, 10 sec) . . . . . . . . . . . . . 300
°C
Thermal Resistance
3
θJA, TSSOP-14 . . . . . . . . . . . . . 206°C/W
NOTES
1 Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute maximum rating
conditions for extended periods may affect device reliability.
2 Max current is bounded by the maximum current handling of the switches,
maximum power dissipation of the package, and maximum applied voltage
across any two of the A, B, and W Terminals at a given resistance. Please refer to
TPC 22 for detail.
3 Package Power Dissipation = (T
J Max–TA)/
θ
JA.
PIN FUNCTION DESCRIPTIONS
Pin
Mnemonic Description
1VSS
Negative Power Supply, specified for opera-
tion from 0 V to –2.7 V.
2
B2
Terminal B of RDAC#2.
3
A2
Terminal A of RDAC#2.
4
W2
Wiper, RDAC#2, addr = 12
5
DGND
Digital Ground.
6
SHDN
Active Low Input. Terminal A open-circuit
and Terminal B shorted to Wiper. Shut-
down controls both RDACs #1 and #2.
7
CS
Chip Select Input, Active Low. When
CS
returns high, data in the serial input register
is decoded, based on the address bit, and
loaded into the corresponding RDAC register.
8
SDI
Serial Data Input. MSB is loaded first.
9
SDO
Serial Data Output. Open Drain transistor
requires pull-up resistor.
10
CLK
Serial Clock Input. Positive Edge Triggered.
11
VDD
Positive Power Supply. Specified for opera-
tion at 2.7 V to 5.5 V.
12
W1
Wiper, RDAC #1, addr = 02.
13
A1
Terminal A of RDAC #1.
14
B1
Terminal B of RDAC #1.
Table I. Serial-Data Word Format
ADDR
DATA
B9
B8
B7
B6
B5
B4
B3
B2
B1
B0
A1
A0
D7
D6
D5
D4
D3
D2
D1
D0
MSB
LSB
2
9
2
8
2
7
2
0
NOTES
ADDR(RDAC1) = 00; ADDR(RDAC2 = 01).
Data loads B9 first into SDI pin.
PIN CONFIGURATION
TOP VIEW
(Not to Scale)
14
13
12
11
10
9
8
1
2
3
4
5
6
7
B1
VSS
AD5207
A1
B2
W1
A2
VDD
W2
CLK
DGND
SDO
SHDN
SDI
CS
ORDERING GUIDE
Temperature
Package
Package
Qty Per
Branding
Model
k
Range
Description
Option
Container
Information
*
AD5207BRU10-REEL7
10
–40
°C to +125°C
TSSOP-14
RU-14
1,000
B10
AD5207BRU50-REEL7
50
–40
°C to +125°C
TSSOP-14
RU-14
1,000
B50
AD5207BRU100-REEL7
100
–40
°C to +125°C
TSSOP-14
RU-14
1,000
B100
*Three lines of information appear on the device. Line 1 lists the part number; Line 2 includes branding information and the ADI logo, and Line 3 contains the
date code YYWW.


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