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MAX5436EUB+

P1-P3P4-P6P7-P9P10-P11
General Description
The MAX5436–MAX5439 are 128-tap high-voltage (±5V
to ±15V) digital potentiometers in packages that are half
the size of comparable devices in 8-pin SO. They perform
the same function as mechanical potentiometers, but
replace the mechanics with a simple digital interface. The
digital logic is powered by a separate single +2.7V to
+5.25V supply voltage (V
CC
). The resistor string uses its
own analog supplies (V
DD
and V
SS
) that require
V
DD
- V
SS
to be greater than 9V and less than 31.5V. This
allows for greater flexibility in voltage ranges that can be
used with these devices. Examples of analog supply
ranges include not only dual voltages of ±5V to ±15V, but
single-supply voltages, such as +10V, +15V, +30V, -30V,
and more, as long as the ranges of V
DD
- V
SS
and V
CC
-
V
SS
are met.
The MAX5437/MAX5439 include an on-chip, high-
voltage, uncommitted amplifier, providing additional
reductions in board space and cost. Other features
include low 35ppm/°C end-to-end and 5ppm/°C ratio-
metric resistor temperature coefficients, a 3-wire SPI™/
QSPI™/MICROWIRE™-compatible serial interface, and
a power-on reset to midscale.
The MAX5436/MAX5438 are available in 10-pin µMAX
packages. The MAX5437/MAX5439 are available in 14-
pin TSSOP package. Each device is guaranteed over
the extended temperature range of -40°C to +85°C.
Applications
LCD Screen Contrast Adjustment
Data-Acquisition Systems
Mechanical Potentiometer Replacement
Low-Drift Programmable Gain Amplifier
Audio Volume Control
Features
♦ +10V to +30V Single-Supply Operation
♦ -28V to -10V Single Negative Supply Operation
♦ ±5V to ±15V Dual-Supply Operation
♦ 128 Tap Positions
♦ Uncommitted High-Voltage Amplifier
(MAX5437/MAX5439)
♦ Low Temperature Coefficient
35ppm/°C (End-to-End)
5ppm/°C (Ratiometric)
♦ Small-Footprint Packages
10-Pin µMAX (MAX5436/MAX5438)
14-Pin TSSOP (MAX5437/MAX5439)
♦ Glitchless Switching Between the Resistor Taps
♦ 3-Wire SPI/QSPI/MICROWIRE-Compatible Serial
Interface
♦ 50kΩ/100kΩ End-to-End Resistances
♦ Power-On Reset: Wiper Goes to Midscale
(Position 64)
MAX5436–MAX5439
±15V, 128-Tap, Low-Drift Digital Potentiometers
________________________________________________________________ Maxim Integrated Products 1
1
2
3
4
5
10
9
8
7
6
V
CC
L
W
H
MAX5436
MAX5438
μMAX
TOP VIEW
V
DD
14
13
12
11
10
9
8
1
2
3
4
5
6
7
MAX5437
MAX5439
TSSOP
GND
CS
DIN
SCLK
V
SS
V
CC
L
W
H
SHDN
CS
DIN
SCLK
V
DD
IN+
IN-
OUT
V
SS
GND
Pin Configurations
Ordering Information
19-2657; Rev 3; 9/04
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART TEMP RANGE
PIN-
PACKAGE
RESISTANCE
(kΩ)
MAX5436EUB -40°C to +85°C 10 µMAX 50
MAX5437EUD -40°C to +85°C 14 TSSOP 50
MAX5438EUB -40°C to +85°C 10 µMAX 100
MAX5439EUD -40°C to +85°C 14 TSSOP 100
SPI/QSPI are trademarks of Motorola, Inc.
MICROWIRE is a trademark of National Semiconductor Corp.
MAX5436–MAX5439
±15V, 128-Tap, Low-Drift Digital Potentiometers
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
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.
V
DD
to GND, V
SS
= GND........................................-0.3V to +34V
V
SS
to GND, V
DD
= GND........................................-34V to +0.3V
V
DD
to V
SS
..............................................................-0.3V to +34V
V
DD
to V
CC
........................................................-6.3V to +28.75V
V
CC
to V
SS
..............................................................-0.3V to +34V
V
CC
to GND..............................................................-0.3V to +6V
DIN, SCLK, CS, SHDN ...............................-0.3V to (V
CC
+ 0.3V)
H, L, W, IN+, IN-, OUT .....................(V
SS
- 0.3V) to (V
DD
+ 0.3V)
Maximum Continuous Current into H, L, and W
MAX5436–MAX5439.......................................................±1mA
Continuous Power Dissipation (T
A
= +70°C)
10-Pin µMAX (derate 6.94mW/°C above +70°C) .........556mW
14-Pin TSSOP (derate 9.1mW/°C above +70°C) .........727mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) .................................+300°C
ELECTRICAL CHARACTERISTICS
(V
DD
= +15V, V
SS
= -15V, V
CC
= +5V, V
H
= V
DD
, V
L
= V
SS
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC PERFORMANCE (voltage-divider mode)
Resolution 2
N
128 Taps
Integral Nonlinearity INL (Note 1) ±1 LSB
Differential Nonlinearity DNL (Note 1) ±1 LSB
End-to-End Resistor Tempco TC
R
35 ppm/°C
Ratiometric Resistor Tempco 5 ppm/°C
Full-Scale Error R
HL
= 50kΩ (MAX5436/MAX5437) -0.3 LSB
Zero-Scale Error R
HL
= 50kΩ (MAX5436/MAX5437) +0.3 LSB
Full-Scale Error R
HL
= 100kΩ (MAX5438/MAX5439) -0.15 LSB
Zero-Scale Error R
HL
= 100kΩ (MAX5438/MAX5439) +0.15 LSB
DC PERFORMANCE (variable-resistor mode)
Resolution 2
N
128 Taps
Integral Nonlinearity INL (Note 2) ±1 LSB
Differential Nonlinearity DNL (Note 2) ±1 LSB
DC PERFORMANCE (resistor characteristics)
Wiper Resistance W
R
(Note 3) 0.9 2 kΩ
Wiper Capacitance W
C
Midscale 6 pF
MAX5438/MAX5439 75 100 125
End-to-End Resistance R
HL
MAX5436/MAX5437 37.5 50 62.5
kΩ
DIGITAL INPUTS
Input High Voltage V
CC
= 4.75V to 5.25V (Note 4) 2.4 V
Input Low Voltage V
CC
= 4.75V to 5.25V 0.8 V
MAX5436–MAX5439
±15V, 128-Tap, Low-Drift Digital Potentiometers
_______________________________________________________________________________________ 3
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input High Voltage V
CC
= 2.7V to 3.6V 2.0 V
Input Low Voltage V
CC
= 2.7V to 3.6V 0.6 V
Input Leakage Current ±1.0 µA
Input Capacitance 5.0 pF
DYNAMIC CHARACTERISTICS (analog)
R
HL
= 50kΩ, midscale, V
H
= 1.5V
P-P
,
C
WIPER
= 20pF, voltage-divider mode
400
Wiper -3dB Bandwidth BW
W
R
HL
= 100kΩ, midscale, V
H
= 1.5V
P-P
,
C
WIPER
= 20pF, voltage-divider mode
200
kHz
Wiper Settling Time t
IL
C
WIPER
= 20pF, code 1 to code 127, settle
to 0.5LSB
5µs
AMPLIFIER CHARACTERISTICS (analog)
Input Bias Current I
B
15 nA
Input Offset Voltage V
OS
±6mV
Offset-Voltage Temperature Drift V
OSD
10 µV/°C
Input Offset Current I
OS
2nA
Unity-Gain Bandwidth UBW
A
C
LOAD
= 250pF 100 kHz
Slew Rate SR 0.25 V/µs
Large-Signal Voltage Gain A
VO
R
LOAD
= 100kΩ, V
OUT
= ±14V 100 V/mV
Input Noise V
N
f = 1kHz 110 nV/√Hz
Input Compliance CMR
I
V
SS
+ 1 V
DD
- 2 V
Output Compliance CMR
O
I
LOAD
= ±5mA V
SS
+ 1 V
DD
- 1 V
DC CMRR CMRR 68 dB
DC PSRR PSRR 70 dB
TIMING CHARACTERISTICS (digital) (Note 5, Figure 3)
SCLK Clock Frequency f
CLK
0 10 MHz
SCLK Clock Period t
CP
100 ns
SCLK Pulse Width High t
CH
40 ns
SCLK Pulse Width Low t
CL
40 ns
CS Fall to SCLK Rise Setup Time t
CSS
40 ns
SCLK Rise to CS Rise Hold Time t
CSH
10 ns
DIN Setup Time t
DS
40 ns
DIN Hold Time t
DH
0ns
SCLK Rise to CS Fall Delay t
CSO
10 ns
CS Rise to SCLK Rise Hold t
CS1
40 ns
CS Pulse Width High t
CSW
100 ns
POWER SUPPLIES
Positive Analog Supply Voltage V
DD
0 31.5 V
Negative Analog Supply Voltage V
SS
-28.8 0 V
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +15V, V
SS
= -15V, V
CC
= +5V, V
H
= V
DD
, V
L
= V
SS
, T
A
= -40°C to +85°C, unless otherwise noted. Typical values are at
T
A
= +25°C, unless otherwise noted.)
P1-P3P4-P6P7-P9P10-P11

MAX5436EUB+

Mfr. #:
Buy MAX5436EUB+
Manufacturer:
Maxim Integrated
Description:
Digital Potentiometer ICs 128-Tap Low-Drift
Lifecycle:
New from this manufacturer.
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