OMO ElectronicOMO Electronic
Expand menu
Hello, Sign inMy Account
0 Cart

N57M5127ZD50TG

P1-P3P4-P6P7-P9
© Semiconductor Components Industries, LLC, 2016
March, 2018 − Rev. 0
1 Publication Order Number:
N57M5127/D
N57M5127
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 R
H
and R
L
. 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
www.onsemi.com
PIN CONFIGURATION
See detailed ordering and shipping information in the package
dimensions section on page 9 of this data sheet.
ORDERING INFORMATION
MSOP−8
Z SUFFIX
CASE 846AD
(Top View)
V
CC
CS
R
L
NC
INC
U/D
R
H
GND
1
MSOP (Z)
1
N57M5127
N57M5127
www.onsemi.com
2
Figure 1. Functional Diagram
Control
and
Memory
POR
GND
V
CC
R
H
R
L
R
P
(U/D)
(INC
)
(CS
)
N57M5127
Table 1. PIN DESCRIPTIONS
Name Function MSOP
INC Increment Control 1
U/D Up/Down Control 2
R
H
Potentiometer High Terminal 3
GND Ground 4
NC No Connect 5
R
L
Potentiometer Low Terminal 6
CS Chip Select 7
V
CC
Supply Voltage 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 R
H
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 R
L
terminal.
R
H
: High End Potentiometer Terminal
R
H
is the high end terminal of the potentiometer. It is not
required that this terminal be connected to a potential greater
than the R
L
terminal. Voltage applied to the R
H
terminal
cannot exceed the supply voltage, V
CC
or go below ground,
GND.
R
L
: Low End Potentiometer Terminal
R
L
is the low end terminal of the potentiometer. It is not
required that this terminal be connected to a potential less
than the R
H
terminal. Voltage applied to the R
L
terminal
cannot exceed the supply voltage, V
CC
or go below ground,
GND. R
L
and R
H
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.
V
CC
: Supply Input for the device.
N57M5127
www.onsemi.com
3
DEVICE OPERATION
The N57M5127 operates like a digitally controlled
variable resistor with R
H
and R
L
equivalent to the high and
low terminals. There are 32 available tap positions including
the resistor end points, R
H
and R
L
. There are 31 resistor
elements connected in series between the R
H
and R
L
terminals.
Operation is controlled by three inputs, INC
, U/D and CS.
These inputs control a five-bit up/down counter whose
output is decoded to select the wiper position. The selected
wiper position can be stored in nonvolatile memory using
the INC
and CS inputs.
With CS
set LOW, the device is selected and will respond
to the U/D
and INC inputs. HIGH to LOW transitions on
INC
will increment or decrement the wiper (depending on
the state of the U/D
input and five-bit counter). The wiper,
when at either end terminal, acts like its mechanical
equivalent and does not move beyond the last position. The
value of the counter is stored in nonvolatile memory
whenever CS
transitions HIGH while the INC input is also
HIGH. When the device is powered-down, the last stored
wiper counter position is maintained in the nonvolatile
memory. When power is restored, the contents of the memory
are recalled and the counter is set to the value stored.
With INC
set low, the device may be de-selected and
powered down without storing the current wiper position in
nonvolatile memory. This allows the system to always
power up to a preset value stored in nonvolatile memory.
Table 2. OPERATION MODES
INC CS U/D Operation
High to Low Low High Wiper toward H
High to Low Low Low Wiper toward L/GND
High Low to High X Store Wiper Position
Low Low to High X No Store, Return to Standby
X High X Standby
Figure 2. Variable Resistor Equivalent Circuit
R
H
R
L
/GND
C
H
C
L
P1-P3P4-P6P7-P9

N57M5127ZD50TG

Mfr. #:
Buy N57M5127ZD50TG
Manufacturer:
ON Semiconductor
Description:
IC DGTL POT 50KOHM 32TAP 8MSOP
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union

Products related to this Datasheet