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  ON Semiconductor Electronic Components Datasheet  

N57M5127 Datasheet

32-tap Digital Potentiometer

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N57M5127
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32‐tap Digital
Potentiometer (POT) with
Wiper Storage
Description
The N57M5127 is a single digital POTs designed as an electronic
replacement for mechanical potentiometers and trim pots. Ideal for
automated adjustments on high volume production lines, it is also well
suited for applications where equipment requiring periodic adjustment
is either difficult to access or located in a hazardous or remote
environment.
The N57M5127 contains a 32-tap series resistor array connected
between two terminals RH and RL. An up/down counter and decoder
that are controlled by three input pins, determines which tap is
connected to the wiper. The wiper setting, stored in nonvolatile
memory, is not lost when the device is powered down and is
automatically reinstated when power is returned. The wiper can be
adjusted to test new system values without effecting the stored setting.
Wiper-control of the N57M5127 is accomplished with three input
control pins, CS, U/D, and INC. The INC input increments the wiper
in the direction which is determined by the logic state of the U/D input.
The CS input is used to select the device and also store the wiper
position prior to power down.
The device is used as a two-terminal variable resistors. Digital POTs
bring variability and programmability to a wide variety of applications
including control, parameter adjustments, and signal processing.
Features
32-position Linear Taper Potentiometer
Non-volatile EEPROM Wiper Storage
Low Standby Current
Single Supply Operation: 2.7 V – 5.5 V
Increment Up/Down Serial Interface
Resistance Values: 10 kW, 50 kW and 100 kW
8−Lead MSOP Package
This Device is Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
Applications
Automated Product Calibration
Remote Control Adjustments
Offset, Gain and Zero Control
Tamper-proof Calibrations
Contrast, Brightness and Volume Controls
Motor Controls and Feedback Systems
Programmable Analog Functions
This document contains information on a product under development. ON Semiconductor
reserves the right to change or discontinue this product without notice.
www.onsemi.com
1
MSOP−8
Z SUFFIX
CASE 846AD
PIN CONFIGURATION
INC
U/D
RH
GND
N57M5127
MSOP (Z)
1
(Top View)
VCC
CS
RL
NC
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
August, 2016 − Rev. P0
1
Publication Order Number:
N57M5127/D


  ON Semiconductor Electronic Components Datasheet  

N57M5127 Datasheet

32-tap Digital Potentiometer

No Preview Available !

N57M5127
N57M5127
VCC
(U/D)
RP
(INC)
(CS)
Control
and
Memory
POR
RH
RL
GND
Figure 1. Functional Diagram
Table 1. PIN DESCRIPTIONS
Name
INC Increment Control
U/D Up/Down Control
RH
GND
Potentiometer High Terminal
Ground
NC No Connect
RL Potentiometer Low Terminal
CS Chip Select
VCC Supply Voltage
Function
MSOP
1
2
3
4
5
6
7
8
DEVICE DESCRIPTION
INC: Increment Control Input
The INC input moves the wiper in the up or down
direction determined by the condition of the U/D input.
U/D: Up/Down Control Input
The U/D input controls the direction of the wiper
movement. When in a high state and CS is low, any
high-to-low transition on INC will cause the wiper to move
one increment toward the RH terminal. When in a low state
and CS is low, any high-to-low transition on INC will cause
the wiper to move one increment towards the RL terminal.
RH: High End Potentiometer Terminal
RH is the high end terminal of the potentiometer. It is not
required that this terminal be connected to a potential greater
than the RL terminal. Voltage applied to the RH terminal
cannot exceed the supply voltage, VCC or go below ground,
GND.
RL: Low End Potentiometer Terminal
RL is the low end terminal of the potentiometer. It is not
required that this terminal be connected to a potential less
than the RH terminal. Voltage applied to the RL terminal
cannot exceed the supply voltage, VCC or go below ground,
GND. RL and RH are electrically interchangeable.
CS: Chip Select
The chip select input is used to activate the control input
of the device and is active low. When in a high state, activity
on the INC and U/D inputs will not affect or change the
position of the wiper. There is an internal pull-up resistor on
the CS input pin.
VCC: Supply Input for the device.
www.onsemi.com
2


Part Number N57M5127
Description 32-tap Digital Potentiometer
Maker ON Semiconductor
Total Page 9 Pages
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