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PDF N57L5128 Data sheet ( Hoja de datos )
| Número de pieza | N57L5128 | |
| Descripción | 32-tap Digital Up/Down Control Potentiometer | |
| Fabricantes | ON Semiconductor | |
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N57L5128
32‐tap Digital Up/Down
Control Potentiometer (POT)
Description
The N57L5128 is a single digital POT designed as an electronic
replacement for mechanical potentiometers and trim pots. Ideal for
automated adjustments on high volume production lines, they are also
well suited for applications where equipment requiring periodic
adjustment is either difficult to access or located in a hazardous or
remote environment.
The N57L5128 contains a 32-tap series resistor array connected
between two terminals A and B. An up/down counter and decoder that
are controlled by two input pins, determines which tap is connected to
the wiper, W. Wiper-control of the N57L5128 is accomplished with
two input control pins, UP and DOWN. A high-to-low transition on
the UP input increments the wiper position and a high-to-low
transition on the DOWN input decrements the wiper position. The tap
position is not stored in memory. The wiper is always set to the mid
point, tap 15 at power up.
The digital POT can be used as a three-terminal resistive divider or
as a two-terminal variable resistor. Digital potentiometers bring
variability and programmability to a wide variety of applications
including control, parameter adjustments, and signal processing.
Features
• 32-position Linear Taper Potentiometer
• Low Power CMOS Technology
• Single Supply Operation: 2.5 V – 5.5 V
• Discrete Step-up/Step-down Digital Control
• Resistance Values: 10 kW, 50 kW and 100 kW
• Available in SOT−23 8-lead Package
• These Devices are 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
SOT−23
TB SUFFIX
CASE 527AK
PIN CONFIGURATION
UP
DOWN
A
GND
1
(Top View)
VCC
NC
B
W
PIN DESCRIPTIONS
Pin Name
UP
DOWN
Function
Step-Up Control
Step-Down Control
A Potentiometer High Terminal
GND
W
B
NC
Ground
Wiper Terminal
Potentiometer Low Terminal
Not Connected
VCC Supply Voltage
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 6 of this data sheet.
© Semiconductor Components Industries, LLC, 2016
August, 2016 − Rev. P0
1
Publication Order Number:
N57L5128/D
1 page  
N57L5128
Table 7. AC OPERATING CHARACTERISTICS (VCC = +2.5 V to +5.5 V, VH = VCC, VL = 0 V, unless othewise specified)
Symbol
Parameter
Min
Typ (Note 5)
Max
Units
tUP UP LOW Period
450 –
– ns
tDOWN
DOWN LOW Period
450 –
– ns
tUP_CYC
UP Cycle Time
1 – – ms
tDOWN_CYC
DOWN Cycle Time
1 – – ms
tUP_R, tUP_F (Note 6)
UP Rise and Fall Time
– – 500 ns
tDOWN_R, tDOWN_F (Note 6)
DOWN Rise and Fall Time
– – 500 ns
tUP_SET
UP Settling Time
550 –
– ns
tDOWN_SET
DOWN Settling Time
550 –
– ns
tPU (Note 6)
Power−up to Wiper Stable
– – 1 ms
5. Typical values are for TA = 25°C and nominal supply voltage.
6. This parameter is periodically sampled and not 100% tested.
Interface Timing Diagrams
tUP_CYC
tUP
tUP_R
tUP_F
90% 90%
UP
10% 10%
tUP_SET
RW
MI (Note 7)
Figure 5. Increment RW in Discrete Steps
DOWN
tDOWN_CYC
tDOWN
tDOWN_R
90% 90%
10% 10%
tDOWN_F
tDOWN_SET
RW
MI (Note 7)
Figure 6. Decrement RW in Discrete Steps
7. MI in the A.C. Timing diagram refers to the minimum incremental change in the W output due to a change in the wiper position.
www.onsemi.com
5
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| Páginas | Total 7 Páginas | |
| PDF Descargar | [ Datasheet N57L5128.PDF ] | |
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