Maxim MAX5161MEUT, MAX5161LEUT, MAX5160NEUA, MAX5160MEUA, MAX5160LEUA Datasheet
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General Description
The MAX5160/MAX5161 linear-taper digital potentiometers perform the same function as a mechanical potentiometer or a variable resistor. They consist of a fixed
resistor and a wiper contact with 32 tap points that are
digitally controlled by three lines for the 8-pin MAX5160
or by two lines for the 6-pin MAX5161.
These parts are ideal for applications requiring digitally
controlled resistors. Three resistance values are available for each part type: 50kΩ, 100kΩ, and 200kΩ. A
nominal resistor temperature coefficient of 50ppm/°C
end-to-end and only 5ppm/°C ratiometric makes the
MAX5160 ideal for applications requiring a low-temperature-coefficient variable resistor, such as low-tempco,
adjustable-gain circuit configurations.
The MAX5160 is available in an 8-pin µMAX package,
and the MAX5161 is available in a 6-pin SOT23 package. Both devices are guaranteed over the extendedindustrial temperature range (-40°C to +85°C).
Applications
LCD Screen Adjustment
Volume Control
Mechanical Potentiometer Replacement
Features
♦ 32 Tap Positions
♦ 50kΩ, 100kΩ, and 200kΩ Resistance Values
♦ 400Ω Wiper Resistance
♦ ±25% Resistance Tolerance
♦ 3-Wire Serial Data Input
♦ ±1LSB DNL
♦ ±0.5LSB INL
♦ 100nA Supply Current
♦ Single-Supply Operation: +2.7V to +5.5V
♦ Power-On Reset: Wiper Goes to Midscale
(position 16)
♦ ±2kV ESD Protection
♦ Small-Footprint Packages
6-Pin SOT23 (MAX5161)
8-Pin µMAX (MAX5160)
♦ Glitchless Switching Between the Resistor Taps
MAX5160/MAX5161
Low-Power Digital Potentiometers
________________________________________________________________
Maxim Integrated Products
1
1
2
3
4
8
7
6
5
V
DD
CS
L
WGND
H
U/D
INC
MAX5160
µMAX
TOP VIEW
H
U/DGND
16V
DD
5 INC
L
MAX5161
SOT23-6
2
34
Functional Diagram
19-1435; Rev 1; 4/99
PART
MAX5160NEUA
MAX5160MEUA
PINPACKAGE
8 µMAX
8 µMAX
Pin Configurations
Ordering Information
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
MAX5160LEUA -40°C to +85°C 8 µMAX
MAX5161NEUT
-40°C to +85°C 6 SOT23-6
MAX5161MEUT -40°C to +85°C 6 SOT23-6
MAX5161LEUT -40°C to +85°C 6 SOT23-6
R
(kΩ)
200
100
50
200
100
50
H
V
DD
GND
CS
INC
U/D
MAX5160
MAX5161
UP/DN
COUNTER
POSITION
DECODER
L
W
MAX5160/MAX5161
Low-Power Digital Potentiometers
2 _______________________________________________________________________________________
Note 1: For the MAX5160, linearity is defined in terms of H to L code-dependent resistance.
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(VDD= +2.7V to +5.5V, VH= VDD, VL= 0, TA = T
MIN
to T
MAX
. Typical values are at VDD= 5V, TA= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
VDDto GND..............................................................-0.3V to +6V
CS, INC, U/D to GND ...............................................-0.3V to +6V
H, L, W to GND.......................................... -0.3V to (V
DD
+ 0.3V)
Input and Output Latchup Immunity ..............................±200mA
Maximum Continuous Current into H, L, and W
MAX516_ _ E _ _..............................................................±1mA
Continuous Power Dissipation (T
A
= +70°C)
6-Pin SOT23 (derate 8.7mW/°C above +70°C).............696mW
8-Pin µMAX (derate 4.1mW/°C above +70°C)..............330mW
Operating Temperature Range .......................... -40°C to +85°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec)............................+300° C
MAX516_ME_ _
MAX516_NE_ _
MAX516_LE_ _
CONDITIONS
ns50t
DI
U/D to INC Setup
ns0t
ID
U/D to INC Hold
ns25t
IH
INC High Period
ns25t
IL
INC Low Period
ns0t
IC
CS to INC Hold Time
ns25t
CI
CS to INC Setup Time
pF5Input Capacitance
µA±1Input Leakage Current
V
0.3 · V
DD
V
IL
Input Low Voltage
V
0.7 · V
DD
V
IH
Input High Voltage
kΩ
37.5 50 62.5
HLEnd-to-End Resistance
LSB±1/2INLIntegral Nonlinearity (Note 1)
%3Resolution
75 100 125
150 200 250
Ω400 1700R
W
Wiper Resistance
LSB+0.1Zero-Scale Error
LSB±1DNLDifferential Nonlinearity (Note 1)
ppm/°C50TC
R
End-to-End Resistor Tempco
ppm/°C5Ratiometric Resistor Tempco
LSB-0.1Full-Scale Error
UNITSMIN TYP MAXSYMBOLPARAMETER
MHz7f
IMAX
INC Frequency
µs1t
IW
Wiper-Settling Time
CS = INC = U/D =
V
DD
or GND
nA135
I
DD
Supply Current
µA0.6 10
V2.7 5.5V
DD
Supply Voltage
VDD= 5V
VDD= 2.7V
pF10C
W
Wiper Capacitance
DIGITAL INPUTS
TIMING CHARACTERISTICS (Figure 6)
POWER SUPPLIES
DC PERFORMANCE
MAX5160/MAX5161
Low-Power Digital Potentiometers
_______________________________________________________________________________________
3
0
200
400
600
800
1,000
012345
WIPER RESISTANCE
vs. WIPER VOLTAGE
MAX5160/61 toc01
WIPER VOLTAGE (V)
WIPER RESISTANCE (Ω)
R
WMAX
= 574.0804
VDD = +2.7V
VDD = +5V
-0.16
-0.1
-0.12
-0.14
0
-0.02
-0.04
-0.06
-0.08
0.02
0.04
0.06
-40-30-20-100102030405060708090
END-TO-END RESISTANCE % CHANGE
vs. TEMPERATURE
MAX5160/61 toc02
TEMPERATURE (°C)
END-TO-END RESISTANCE % CHANGE
200kΩ
200kΩ
100kΩ
50kΩ
50kΩ
100kΩ
0
50
25
125
100
75
150
175
200
225
1 5 9 131721252933
END-TO-END RESISTANCE
vs. TAP POSITION
MAX5160/61 toc03
TAP POSITION
RESISTANCE (kΩ)
200kΩ
0
20
10
50
40
30
60
70
80
90
100
110
1 5 9 131721252933
END-TO-END RESISTANCE
vs. TAP POSITION
MAX5160/61 toc04
TAP POSITION
RESISTANCE (kΩ)
100kΩ
Typical Operating Characteristics
(VDD= +5V, TA= +25°C, unless otherwise noted.)
0
10
5
25
20
15
30
35
40
45
50
1 5 9 131721252933
END-TO-END RESISTANCE
vs. TAP POSITION
MAX5160/61 toc05
TAP POSITION
RESISTANCE (kΩ)
50kΩ
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