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CAT5419YI-00 Datasheet(PDF) 1 Page - ON Semiconductor

No. de pieza CAT5419YI-00
Descripción Electrónicos  Dual Digitally Programmable Potentiometers with 64 Taps and 2-wire Interface
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CAT5419YI-00 Datasheet(HTML) 1 Page - ON Semiconductor

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CAT5419
2008 SCILLC. All rights reserved.
1
Doc. No. MD-2115 Rev. I
Characteristics subject to change without notice
Dual Digitally Programmable Potentiometers (DPP™)
with 64 Taps and 2-wire Interface
FEATURES
Two linear-taper digital potentiometers
64 resistor taps per potentiometer
End to end resistance 2.5k
Ω, 10kΩ, 50kΩ or
100k
Potentiometer control and memory access via
2-wire Interface (I
2C like)
Low wiper resistance, typically 80
Four non-volatile wiper settings for each
potentiometer
Recall of wiper settings at power up
2.5 to 6.0 volt operation
Standby current less than 1µA
1,000,000 nonvolatile WRITE cycles
100 year nonvolatile memory data retention
24-lead SOIC and 24-lead TSSOP
Write protection for data register
PIN CONFIGURATION
SOIC (W)
(top view)
VCC
1
24 NC
RL0
2
23 NC
RH0
3
22 NC
RW0
4
21 NC
A2
5
20 A
0
WP
¯¯¯
6
19 NC
SDA
7
18 A
3
A1
8
17 SCL
RL1
9
16 NC
RH1
10
15 NC
RW1
11
14 NC
GND
12
13 NC
CAT
5419
TSSOP (Y)
(top view)
SDA
1
24 WP
¯¯¯
A1
2
23 A
2
RL1
3
22 R
W0
RH1
4
21 R
H0
RW1
5
20 R
L0
GND
6
19 V
CC
NC
7
18 NC
NC
8
17 NC
NC
9
16 NC
NC
10
15 NC
SCL
11
14 A
0
A3
12
13 NC
CAT
5419
DESCRIPTION
The
CAT5419
is
two
Digitally
Programmable
Potentiometers (DPP™) integrated with control logic
and 16 bytes of NVRAM memory.
A separate 6-bit control register (WCR) independently
controls the wiper tap position for each DPP.
Associated with each wiper control register are four 6-
bit non-volatile memory data registers (DR) used for
storing up to four wiper settings. Writing to the wiper
control register or any of the non-volatile data regis-
ters is via a 2-wire serial bus (I
2C-like). On power-up,
the contents of the first data register (DR0) for each of
the two potentiometers is automatically loaded into its
respective wiper control registers (WCR).
The Write Protection (WP
¯¯¯) pin protects against
inadvertent programming of the data register.
The CAT5419 can be used as a potentiometer or as a
two terminal, variable resistor. It is intended for circuit
level or system level adjustments in a wide variety of
applications.
FUNCTIONAL DIAGRAM
For Ordering Information details, see page 15.
RW0
RW1
RH0
SDA
SCL
A0
A1
A2
A3
RH1
RL0
RL1
NONVOLATILE
DATA
REGISTERS
WIPER
CONTROL
REGISTERS
CONTROL
LOGIC
2-WIRE BUS
INTERFACE
WP


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