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CAT5241 PDF даташит

Спецификация CAT5241 изготовлена ​​​​«ON Semiconductor» и имеет функцию, называемую «Quad Digital Potentiometer».

Детали детали

Номер произв CAT5241
Описание Quad Digital Potentiometer
Производители ON Semiconductor
логотип ON Semiconductor логотип 

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CAT5241 Даташит, Описание, Даташиты
CAT5241
Quad Digital
Potentiometer (POT)
with 64 Taps
and I2C Interface
Description
The CAT5241 is four Digital POTs integrated with control logic and
16 bytes of NVRAM memory. Each digital POT consists of a series of
63 resistive elements connected between two externally accessible end
points. The tap points between each resistive element are connected to
the wiper outputs with CMOS switches. A separate 6-bit control
register (WCR) independently controls the wiper tap switches for each
digital POT. 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 registers is via a I2C serial bus. On power-up, the
contents of the first data register (DR0) for each of the four
potentiometers is automatically loaded into its respective wiper
control register (WCR).
The CAT5241 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.
Features
Four Linear-taper Digital Potentiometers
64 Resistor Taps per Potentiometer
End to End Resistance 2.5 kW, 10 kW, 50 kW or 100 kW
Potentiometer Control and Memory Access via I2C Interface
Low Wiper Resistance, Typically 80 W
Nonvolatile Memory Storage for up to Four Wiper Settings for Each
Potentiometer
Automatic Recall of Saved Wiper Settings at Power Up
2.5 to 6.0 Volt Operation
Standby Current less than 1 mA
1,000,000 Nonvolatile WRITE Cycles
100 Year Nonvolatile Memory Data Retention
20-lead SOIC and TSSOP Packages
Industrial Temperature Range
These Devices are Pb-Free, Halogen Free/BFR Free and are RoHS
Compliant
http://onsemi.com
TSSOP20
Y SUFFIX
CASE 948AQ
SOIC20
W SUFFIX
CASE 751BJ
PIN CONNECTIONS
RW0
RL0
RH0
A0
A2
RW1
RL1
RH1
SDA
GND
1
CAT5241
SOIC20 (W)
TSSOP20 (Y)
(Top View)
VCC
RW3
RL3
RH3
A1
A3
SCL
RW2
RL2
RH2
ORDERING INFORMATION
See detailed ordering and shipping information in the package
dimensions section on page 14 of this data sheet.
Semiconductor Components Industries, LLC, 2013
July, 2013 Rev. 20
1
Publication Order Number:
CAT5241/D









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CAT5241 Даташит, Описание, Даташиты
CAT5241
(SOIC20)
MARKING DIAGRAMS
(TSSOP20)
L3B
CAT5241WT
RRYMXXXX
L = Assembly Location
3 = Lead Finish MatteTin
B = Product Revision (Fixed as “B”)
CAT5241W = Device Code
T = Temperature Range (I = Industrial)
= Dash
RR = Resistance
25 = 2.5 KW
10 = 10 KW
50 = 50 KW
00 = 100 KW
Y = Production Year (Last Digit)
M = Production Month (19, O, N, D)
XXXX = Last Four Digits of Assembly Lot Number
RLB
CAT5241YT
3YMXXX
R = Resistance
1 = 2.5 KW
2 = 10 KW
4 = 50 KW
5 = 100 KW
L = Assembly Location
B = Product Revision (Fixed as “B”)
CAT5241Y = Device Code
T = Temperature Range (I = Industrial)
3 = Lead Finish MatteTin
Y = Production Year (Last Digit)
M = Production Month (19, O, N, D)
XXX = Last Three Digits of Assembly Lot Number
http://onsemi.com
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CAT5241 Даташит, Описание, Даташиты
CAT5241
RH0 RH1 RH2 RH3
SCL
SDA
A0
A1
A2
A3
I2C BUS
INTERFACE
WIPER
CONTROL
REGISTERS
CONTROL
LOGIC
NONVOLATILE
DATA
REGISTERS
RL0 RL1 RL2 RL3
Figure 1. Functional Diagram
RW0
RW1
RW2
RW3
Table 1. PIN DESCRIPTION
Pin (SOIC) Name
Function
1 RW0 Wiper Terminal for Potentiometer 0
2 RL0 Low Reference Terminal for
Potentiometer 0
3 RH0 High Reference Terminal for
Potentiometer 0
4 A0 Device Address, LSB
5 A2 Device Address
6 RW1 Wiper Terminal for Potentiometer 1
7 RL1 Low Reference Terminal for
Potentiometer 1
8 RH1 High Reference Terminal for
Potentiometer 1
9 SDA Serial Data Input/Output
10 GND Ground
11 RH2 High Reference Terminal for
Potentiometer 2
12
RL2
Low Reference Terminal for
Potentiometer 2
13 RW2 Wiper Terminal for Potentiometer 2
14 SCL Bus Serial Clock
15 A3 Device Address
16 A1 Device Address
17 RH3 High Reference Terminal for
Potentiometer 3
18 RL3 Low Reference Terminal for
Potentiometer 3
19 RW3 Wiper Terminal for Potentiometer 3
20 VCC Supply Voltage
Pin Descriptions
SCL: Serial Clock
The CAT5241 serial clock input pin is used to clock all
data transfers into or out of the device.
SDA: Serial Data
The CAT5241 bidirectional serial data pin is used to
transfer data into and out of the device. The SDA pin is an
open drain output and can be wire-OR’d with the other open
drain or open collector outputs.
A0, A1, A2, A3: Device Address Inputs
These inputs set the device address when addressing
multiple devices. A total of sixteen devices can be addressed
on a single bus. A match in the slave address must be made
with the address input in order to initiate communication
with the CAT5241.
RH, RL: Resistor End Points
The four sets of RH and RL pins are equivalent to the
terminal connections on a mechanical potentiometer.
RW: Wiper
The four RW pins are equivalent to the wiper terminal of
a mechanical potentiometer.
Device Operation
The CAT5241 is four resistor arrays integrated with I2C
serial interface logic, four 6-bit wiper control registers and
sixteen 6-bit, non-volatile memory data registers. Each
resistor array contains 63 separate resistive elements
connected in series. The physical ends of each array are
equivalent to the fixed terminals of a mechanical
potentiometer (RH and RL). RH and RL are symmetrical and
may be interchanged. The tap positions between and at the
ends of the series resistors are connected to the output wiper
terminals (RW) by a CMOS transistor switch. Only one tap
point for each potentiometer is connected to its wiper
terminal at a time and is determined by the value of the wiper
control register. Data can be read or written to the wiper
control registers or the non-volatile memory data registers
via the I2C bus. Additional instructions allow data to be
transferred between the wiper control registers and each
respective potentiometer’s non-volatile data registers. Also,
the device can be instructed to operate in an
“increment/decrement” mode.
http://onsemi.com
3










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