ISL22349UFV14Z-TK Intersil, ISL22349UFV14Z-TK Datasheet - Page 8

• Manufacturer Part Number: ISL22349UFV14Z-TK
• Description: IC POT DGTL 128TP LN LP 14-TSSOP
• Manufacturer: Intersil
• Series: XDCP™r

Specifications of ISL22349UFV14Z-TK

• Taps: 128
• Resistance (ohms): 50K
• Number Of Circuits: 4
• Temperature Coefficient: 80 ppm/°C Typical
• Memory Type: Non-Volatile
• Interface: I²C, 2-Wire Serial
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 14-TSSOP
• Resistance In Ohms: 50K
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Typical Performance Curves
Pin Descriptions
Potentiometers Pins
RWI (I = 0, 1, 2 OR 3)
RWi is the wiper terminal and is equivalent to the movable
terminal of a mechanical potentiometer. The position of the
wiper within the array is determined by the WRi register.
SHDN
The SHDN pin forces the resistor to end-to-end open circuit
condition and shorts all RWi to GND. When SHDN is
returned to logic high, the previous latch settings put RWi at
the same resistance setting prior to shutdown. This pin is
logically AND with SHDN bit in ACR register. I
still available in shutdown mode and all registers are
accessible. This pin must remain HIGH for normal operation.
FIGURE 7. END-TO-END R
-0.5
-1.0
1.0
0.5
0.0
FIGURE 9. MIDSCALE GLITCH, CODE 3Fh TO 40h
-40
V
V
CC
SIGNAL AT WIPER
(WIPER UNLOADED)
CC
-20
= 5.5V
TEMPERATURE
= 2.7V
0
20
TEMPERATURE (°C)
TOTAL
8
40
% CHANGE vs
60
10k
(Continued)
80
2
50k
C interface is
100
120
ISL22349
Bus Interface Pins
SERIAL DATA INPUT/OUTPUT (SDA)
The SDA is a bidirectional serial data input/output pin for I
interface. It receives device address, operation code, wiper
address and data from an I
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.
FIGURE 11. DCP CONNECTION IN SHUTDOWN MODE
FIGURE 8. TC FOR VOLTAGE DIVIDER MODE IN ppm
105
90
75
60
45
30
15
0
16
FIGURE 10. LARGE SIGNAL SETTLING TIME
50
10
SCL
36
TAP POSITION (DECIMAL)
SIGNAL AT WIPER
(WIPER UNLOADED) MOVEMENT
FROM 7Fh TO 00h
2
C external master device at the
56
RW
76
96
May 28, 2009
FN6331.3
2
C