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PDF CAT5133 Data sheet ( Hoja de datos )
| Número de pieza | CAT5133 | |
| Descripción | Digitally Programmable Potentiometer | |
| Fabricantes | Catalyst Semiconductor | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de CAT5133 (archivo pdf) en la parte inferior de esta página. Total 10 Páginas | ||
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CAT5133
15 Volt Digitally Programmable Potentiometer (DPPTM)
with 128 Taps and an Increment Decrement Interface
FEATURES
Single Linear Digital Programmable
Potentiometer
128 Resistor Taps
End-to-end resistances of 10kΩ, 50kΩ, & 100kΩ
Potentiometer control and memory storage via
an Increment-Decrement Interface
Nonvolatile memory storage for wiper settings
Automatic recall of saved wiper settings at
power up
Vcc operation from 2.7V to 5.5V
V+ (Analog Voltage Supply) operation from +8V
to +15V
Wiper output voltages from 0V to +15V
Standby current less than 15µA
100 year nonvolatile memory data retention
10-pin MSOP package
Operating Temperature of -40ºC to +85ºC
APPLICATION
LCD screen Adjustment
Volume Control
Mechanical potentiometer replacement
Gain adjustment
Line impedance matching
VCOM settings adjustment
BLOCK DIAGRAM
DESCRIPTION
The CAT5133 is a high voltage Digital Programmable
Potentiometer (DPP) integrated with E2PROM
memory and control logic to operate in a similar
manor to a mechanical potentiometer. The DPP
consists of a series of 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 7-bit
wiper control register (WCR) independently controls
the wiper tap switches for the DPP. Associated with
the control register is a 7-bit nonvolatile memory data
register (DR) used for storing the wiper settings.
Changing the value of the wiper control register or
storing that value into the nonvolatile memory is
performed via a 3-input Increment-Decrement interface.
The CAT5133 comes with 2 voltage supply inputs: Vcc
(digital supply voltage) input and V+ (analog bias
supply) input. Providing separate Digital and Analog
inputs allow the potentiometer terminals to be as much
as 10 volts above Vcc and 15 volts above ground.
The CAT5133 can be used as a potentiometer or as a
two terminal, variable resistor. It is designed for circuit
level or system level adjustments in a wide variety of
applications.
On power-up, the contents of the nonvolatile data
register (DR) are transferred to the wiper control
register (WCR) and the wiper is positioned to that
location. The CAT5133 is shipped with the DR
programmed to position 64.
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
1
Doc. No. 2125 Rev. A
1 page  
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CAT5133
DC ELECTRICAL CHARACTERISTICS
VCC = +2.7V to +6.0V, unless otherwise specified.
Symbol
ICC1
ICC2
ISB(VCC)
ISB(V+)
ILI
ILO
VIL
VIH
VOL1
Parameter
Power Supply Current
Power supply Current
Nonvolatile WRITE
Standby Current (VCC = 5V)
V+ Standby Current
Input Leakage Current
Output Leakage Current
Input Low Voltage
Input High Voltage
Output Low Voltage (VCC = 3.0V)
Test Conditions
VCC = 5.5V, fINC = 1MHz, Input = GND
VCC = 5.5V, fINC = 1MHz, Input = GND
Min
Max Units
1 mA
3.0 mA
VIN = GND or VCC, INC = VCC
VCC = 5V, V+ = 15V
VIN = GND to VCC
VOUT = GND to VCC
IOL = 3 mA
5
10
10
10
-1 VCC x 0.3
VCC x 0.7 VCC + 1.0
0.4
µA
µA
µA
µA
V
V
V
CAPACITANCE
TA = 25ºC, f = 1.0MHz, VCC = 5.0V
Symbol
CI/O
CIN
Parameter
Input/Output Capacitance (SDA)
Input Capacitance (A0, A1, SCL)
POWER UP TIMING(1)(2)
Symbol
tPUR
tPUW
Parameter
Power-up to Read Operation
Power-up to Write Operation
Test Conditions
VI/O = 0V(1)
VIN = 0V(1)
Min Max Units
8 pF
6 pF
Min Max Units
1 ms
1 ms
XDCP TIMING
Symbol
tWRPO
tWRL
Parameter
Wiper Response Time After Power Supply Stable
Wiper Response Time After Instruction Issued
Min Max Units
5 10 µs
5 10 µs
WRITE CYCLE LIMITS
Symbol Parameter
tWR Write Cycle Time
Min Max Units
5 ms
Notes:
(1) This parameter is tested initially and after a design or process change that affects the parameter.
(2) tPUR and tPUW are the delays required from the time VCC is stable until the specified operation can be initiated.
© 2006 Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
5
Doc. No. 2125 Rev. A
5 Page | ||
| Páginas | Total 10 Páginas | |
| PDF Descargar | [ Datasheet CAT5133.PDF ] | |
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