CAT5127 Datasheet PDF - ON Semiconductor
| Part Number | CAT5127 | |
| Description | 32-tap Digital Potentiometers | |
| Manufacturers | ON Semiconductor | |
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CAT5127, CAT5129
32‐tap Digital
Potentiometers (POTs)
Description
The CAT5127/CAT5129 are single digital POTs 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 CAT5127 contains a 32-tap series resistor array connected
between two terminals RH and RL. The CAT5129 contains a 32-tap
series resistor array connected between two terminals RH and GND.
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 CAT5127/CAT5129 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 devices are used as 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: 2.5 V – 5.5 V
Increment Up/Down Serial Interface
Resistance Values: 10 kW, 50 kW and 100 kW
CAT5127 in MSOP Packages
CAT5129 in the 6-lead TSOT23 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
http://onsemi.com
1
MSOP−8
Z SUFFIX
CASE 846AD
1
TSOT−23
TD SUFFIX
CASE 419AF
PIN CONFIGURATIONS
INC
U/D
RH
GND
CAT5127
MSOP (Z)
1
VCC
CS
RL
NC
CAT5129
TSOT−23 (TD)
1
CS
VCC
GND
RH
U/D INC
(Top Views)
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 8 of this data sheet.
Semiconductor Components Industries, LLC, 2013
July, 2013 − Rev. 7
1
Publication Order Number:
CAT5127/D
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CAT5127, CAT5129
Table 5. DC ELECTRICAL CHARACTERISTICS (VCC = +2.5 V to +5.5 V unless otherwise specified)
Symbol
Parameter
Conditions
Min Typ
POWER SUPPLY
VCC Operating Voltage Range
ICC1
CAT5127
Supply Current (Increment)
CAT5129
Supply Current (Increment)
ICC2 Supply Current (Write)
ISB1
(Note 4)
Supply Current (Standby)
LOGIC INPUTS
VCC = 5.5 V, f = 1 MHz, IW = 0
VCC = 3.3 V, f = 1 MHz, IW = 0
VCC = 5.5 V, f = 1 MHz, IW = 0
VCC = 3.3 V, f = 1 MHz, IW = 0
Programming, VCC = 5.5 V
Programming, VCC = 3.3 V
CS = VCC − 0.3 V
U/D, INC = VCC or GND
2.5
300
150
0.35
IIH CAT5127 Input Leakage Current
CAT5129 Input Leakage Current
IIL CAT5127 Input Leakage Current
U/D, INC = VCC
CS = VCC − 0.3 V
VIN = VCC
U/D, INC = 0
CS = 0
CAT5129 Input Leakage Current
VIH2 CMOS High Level Input Voltage
VIL2 CMOS Low Level Input Voltage
VIH1
CAT5129 TTL High Level Input
Voltage
VIN = 0 V
2.5 V VCC 5.5 V
3.6 V VCC 5.5 V
VCC x 0.7
−0.3
2
VIL1 CAT5129 TTL Low Level Input Voltage
0
Table 6. POTENTIOMETER CHARACTERISTICS
Symbol
Parameter
Conditions
Min Typ
RPOT
Potentiometer Resistance
−10 Device
−50 Device
10
50
−00 Device
100
RTOL
VRH
VRL
RES
Pot Resistance Tolerance
Voltage on RH pin
Voltage on RL pin
Resolution
0
0
3.2
INL Integral Linearity Error
0.5
DNL
Differential Linearity Error
0.25
RWi Wiper Resistance
VCC = 5 V
70
VCC = 2.5 V
150
TCRPOT (Note 6)
TC of Pot Resistance
30
TCRATIO (Note 6)
Ratiometric TC
3
VN (Note 6)
Noise
100 kHz / 1 kHz
8/24
CH/CL/CW (Note 6) Potentiometer Capacitances
8/8/25
Fc (Note 6)
Frequency Response
Passive Attenuator, 10 kW
1.7
4. Latch-up protection is provided for stresses up to 100 mA on address and data pins from −1 V to VCC + 1 V
5. IW = source or sink
6. These parameters are periodically sampled and are not 100% tested.
Max Units
5.5 V
260 mA
150 mA
160 mA
50 mA
600 mA
400 mA
1 mA
1
1
1
−1
−120
−1
VCC + 0.3
VCC x 0.2
VCC
0.8
mA
mA
mA
mA
mA
mA
V
V
V
V
Max Units
kW
20
VCC
VCC
1
0.5
100
200
300
20
%
V
V
%
LSB
LSB
W
W
ppm/C
ppm/C
nV/Hz
pF
MHz
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| Information | Total 10 Pages | |
| Link URL | [ Copy URL to Clipboard ] | |
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