ISL23328TFVZ-TK Intersil, ISL23328TFVZ-TK Datasheet - Page 13

• Manufacturer Part Number: ISL23328TFVZ-TK
• Description: IC DGTL POT 2CH 100K 14TSSOP
• Manufacturer: Intersil
• Series: XDCP™r

Specifications of ISL23328TFVZ-TK

• Taps: 128
• Resistance (ohms): 100K
• Number Of Circuits: 2
• Temperature Coefficient: 45 ppm/°C Typical
• Memory Type: Volatile
• Interface: I²C (Device Address)
• Voltage - Supply: 1.2 V ~ 5.5 V, 1.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: *
• Package / Case: *
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Typical Performance Curves
Functional Pin Descriptions
Potentiometers Pins
RH
The high (RHi, i = 0, 1) and low (RLi, i = 0, 1) terminals of the
ISL23328 are equivalent to the fixed terminals of a mechanical
potentiometer. RHi and RLi are referenced to the relative position
of the wiper and not the voltage potential on the terminals. With
WRi set to 127 decimal, the wiper will be closest to RHi, and with
the WR set to 0, the wiper is closest to RLi.
RW
RWi (i = 0, 1) 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 WRi register.
I
I
AND RL
0.5V/DIV, 0.2µs/DIV
-3dB FREQUENCY = 1.4MHz AT MIDDLE TAP
1V/DIV
0.2µs/DIV
FIGURE 21. WIPER LARGE SIGNAL SETTLING TIME
FIGURE 23. 10kΩ -3dB CUT OFF FREQUENCY
I
13
CH1: RH TERMINAL
CH2: RW TERMINAL
9TH CLOCK OF THE
DATA BYTE (ACK)
WIPER
SCL
(Continued)
ISL23328
V
Power terminal for the potentiometer section analog power
source. Can be any value needed to support voltage range of DCP
pins, from 1.7V to 5.5V, independent of the V
Bus Interface Pins
SERIAL DATA INPUT/OUTPUT (SDA)
The SDA is a bi-directional serial data input/output pin for I
interface. It receives device address, wiper address and data
from an I
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.
CC
FIGURE 22. POWER-ON START-UP IN VOLTAGE DIVIDER MODE
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
0.5V/DIV
20µs/DIV
0
FIGURE 24. STANDBY CURRENT vs TEMPERATURE
-40
2
C external master device at the rising edge of the serial
-15
V
CC
10
= 5.5V, V
TEMPERATURE (°C)
LOGIC
35
V
= 5.5V
CC
60
= 1.7V, V
LOGIC
WIPER
V
CC
85
LOGIC
voltage.
August 19, 2011
= 1.2V
110
FN7902.0
2
C