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Controlled Potentiometer. ISL23315 Datasheet

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Controlled Potentiometer. ISL23315 Datasheet






ISL23315 Potentiometer. Datasheet pdf. Equivalent






ISL23315 Potentiometer. Datasheet pdf. Equivalent


ISL23315

Part

ISL23315

Description

Low Voltage Digitally Controlled Potentiometer



Feature


DATASHEET ISL23315 Single, Low Voltage Digitally Controlled Potentiometer (XDC P™) FN7778 Rev 2.00 August 12, 2015 The ISL23315 is a volatile, low voltag e, low noise, low power, I2C Bus™, 25 6 Taps, single digitally controlled pot entiometer (DCP), which integrates DCP core, wiper switches and control logic on a monolithic CMOS integrated circuit . The digitally contro.
Manufacture

Renesas

Datasheet
Download ISL23315 Datasheet


Renesas ISL23315

ISL23315; lled potentiometer is implemented with a combination of resistor elements and C MOS switches. The position of the wiper s are controlled by the user through th e I2C bus interface. The potentiometer has an associated volatile Wiper Regist er (WR) that can be directly written to and read by the user. The contents of the WR controls the position of the wip er. When powered o.


Renesas ISL23315

n, the ISL23315’s wiper will always co mmence at mid-scale (128 tap position). The low voltage, low power consumption , and small package of the ISL23315 mak e it an ideal choice for use in battery operated equipment. In addition, the I SL23315 has a VLOGIC .

Part

ISL23315

Description

Low Voltage Digitally Controlled Potentiometer



Feature


DATASHEET ISL23315 Single, Low Voltage Digitally Controlled Potentiometer (XDC P™) FN7778 Rev 2.00 August 12, 2015 The ISL23315 is a volatile, low voltag e, low noise, low power, I2C Bus™, 25 6 Taps, single digitally controlled pot entiometer (DCP), which integrates DCP core, wiper switches and control logic on a monolithic CMOS integrated circuit . The digitally contro.
Manufacture

Renesas

Datasheet
Download ISL23315 Datasheet




 ISL23315
DATASHEET
ISL23315
Single, Low Voltage Digitally Controlled Potentiometer (XDCP™)
FN7778
Rev 2.00
August 12, 2015
The ISL23315 is a volatile, low voltage, low noise, low power, I2C
Bus, 256 Taps, single digitally controlled potentiometer (DCP),
which integrates DCP core, wiper switches and control logic on
a monolithic CMOS integrated circuit.
The digitally controlled potentiometer is implemented with a
combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I2C bus interface. The potentiometer has an associated
volatile Wiper Register (WR) that can be directly written to and
read by the user. The contents of the WR controls the position
of the wiper. When powered on, the ISL23315’s wiper will
always commence at mid-scale (128 tap position).
The low voltage, low power consumption, and small package
of the ISL23315 make it an ideal choice for use in battery
operated equipment. In addition, the ISL23315 has a VLOGIC
pin allowing down to 1.2V bus operation, independent from the
VCC value. This allows for low logic levels to be connected
directly to the ISL23315 without passing through a voltage
level shifter.
The DCP can be used as a three-terminal potentiometer or as a
two-terminal variable resistor in a wide variety of applications
including control, parameter adjustments, and signal processing.
Features
• 256 resistor taps
• I2C serial interface
- No additional level translator for low bus supply
- Two address pins allow up to four devices per bus
• Power supply
- VCC = 1.7V to 5.5V analog power supply
- VLOGIC = 1.2V to 5.5V I2C bus/logic power supply
• Wiper resistance: 70typical @ VCC = 3.3V
• Shutdown Mode - forces the DCP into an end-to-end open
circuit and RW is shorted to RL internally
• Power-on preset to mid-scale (128 tap position)
• Shutdown and standby current <2.8µA max
• DCP terminal voltage from 0V to VCC
• 10k 50kor 100ktotal resistance
• Extended industrial temperature range: -40°C to +125°C
• 10 Ld MSOP or 10 Ld µTQFN packages
• Pb-free (RoHS compliant)
Applications
• Power supply margining
• RF power amplifier bias compensation
• LCD bias compensation
• Laser diode bias compensation
10000
8000
6000
4000
2000
00 50 100 150 200 250
TAP POSITION (DECIMAL)
FIGURE 1. FORWARD AND BACKWARD RESISTANCE vs TAP
POSITION, 10k DCP
FIGURE 2. VREF ADJUSTMENT
FN7778 Rev 2.00
August 12, 2015
Page 1 of 20




 ISL23315
ISL23315
Block Diagram
VLOGIC
SCL
SDA
A1
A0
I/O
BLOCK
LEVEL
SHIFTER
Pin Configurations
ISL23315
(10 LD MSOP)
TOP VIEW
VLOGIC
SCL
SDA
A0
A1
1
2
3
4
5
10
9
8
7
6
GND
VCC
RH
RW
RL
ISL23315
(10 LD µTQFN)
TOP VIEW
SCL 1
SDA 2
A0 3
A1 4
9 GND
8 VCC
7 RH
6 RW
VCC
POWER-UP
INTERFACE,
CONTROL
AND
STATUS
LOGIC
WR
VOLATILE
REGISTER
AND
WIPER
CONTROL
CIRCUITRY
RH
GND
RL
RW
Pin Descriptions
MSOP
1
µTQFN
10
21
32
43
54
65
76
87
98
10 9
SYMBOL
VLOGIC
DESCRIPTION
I2C bus /logic supply. Range 1.2V to
5.5V
SCL Logic Pin - Serial bus clock input
SDA Logic Pin - Serial bus data
input/open drain output
A0 Logic Pin - Hardwire slave address
pin for I2C serial bus.
Range: VLOGIC or GND
A1 Logic Pin - Hardwire slave address
pin for I2C serial bus.
Range: VLOGIC or GND
RL DCP “low” terminal
RW DCP wiper terminal
RH DCP “high” terminal
VCC Analog power supply.
Range 1.7V to 5.5V
GND Ground pin
FN7778 Rev 2.00
August 12, 2015
Page 2 of 20



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