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ISL22313UFU10Z-TK View Datasheet(PDF) - Intersil

Part NameDescriptionManufacturer
ISL22313UFU10Z-TK Single Digitally Controlled Potentiometer (XDCP™) Intersil
Intersil Intersil
ISL22313UFU10Z-TK Datasheet PDF : 15 Pages
1 2 3 4 5 6 7 8 9 10 Next Last
ISL22313
Typical Performance Curves (Continued)
500
400
10k
INPUT
OUTPUT
300
200
50k
100
0
16
66
116
166
216
TAP POSITION (DECIMAL)
FIGURE 11. TC FOR RHEOSTAT MODE IN ppm
WIPER AT MID POINT (POSITION 80h)
RTOTAL = 10kΩ
FIGURE 12. FREQUENCY RESPONSE (1MHz)
SCL
WIPER
CS
WIPER UNLOADED,
MOVEMENT FROM 0h to FFh
FIGURE 13. MIDSCALE GLITCH, CODE 7Fh TO 80h
Pin Description
Potentiometers Pins
RH and RL
The high (RH) and low (RL) terminals of the ISL22313 are
equivalent to the fixed terminals of a mechanical
potentiometer. RH and RL are referenced to the relative
position of the wiper and not the voltage potential on the
terminals. With WR set to 255 decimal, the wiper will be
closest to RH, and with the WR set to 0, the wiper is closest
to RL.
RW
RW is the wiper terminal, and it is equivalent to the movable
terminal of a mechanical potentiometer. The position of the
wiper within the array is determined by the WR register.
FIGURE 14. LARGE SIGNAL SETTLING TIME
Bus Interface Pins
Serial Data Input/Output (SDA)
The SDA is a bidirectional serial data input/output pin for I2C
interface. It receives device address, operation code, wiper
address and data from an I2C external master device at the
rising edge of the serial clock SCL, and it shifts out data after
each falling edge of the serial clock.
SDA requires an external pull-up resistor, since it is an open
drain input/output.
Serial Clock (SCL)
This input is the serial clock of the I2C serial interface. SCL
requires an external pull-up resistor, since it is an open drain
input.
10
FN6421.0
July 17, 2007
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