參數(shù)資料
型號(hào): ISL22349WFV14Z-TK
廠商: Intersil
文件頁(yè)數(shù): 12/13頁(yè)
文件大?。?/td> 0K
描述: IC POT DGTL 128TP LN LP 14-TSSOP
標(biāo)準(zhǔn)包裝: 1,000
系列: XDCP™
接片: 128
電阻(歐姆): 10k
電路數(shù): 4
溫度系數(shù): 標(biāo)準(zhǔn)值 ±50 ppm/°C
存儲(chǔ)器類型: 非易失
接口: I²C(設(shè)備位址)
電源電壓: 2.7 V ~ 5.5 V
工作溫度: -40°C ~ 125°C
安裝類型: 表面貼裝
封裝/外殼: 14-TSSOP(0.173",4.40mm 寬)
供應(yīng)商設(shè)備封裝: 14-TSSOP
包裝: 帶卷 (TR)
8
FN6331.3
May 28, 2009
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. I2C interface is
still available in shutdown mode and all registers are
accessible. This pin must remain HIGH for normal operation.
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.
FIGURE 7. END-TO-END RTOTAL % CHANGE vs
TEMPERATURE
FIGURE 8. TC FOR VOLTAGE DIVIDER MODE IN ppm
FIGURE 9. MIDSCALE GLITCH, CODE 3Fh TO 40h
FIGURE 10. LARGE SIGNAL SETTLING TIME
Typical Performance Curves (Continued)
-1.0
-0.5
0.0
0.5
1.0
-40
-20
0
20
40
60
80
100
120
TEMPERATURE (°C)
E
N
D-
T
O
-E
ND
R
TO
T
A
L
CHAN
GE
(%
)
VCC = 2.7V
50k
10k
VCC = 5.5V
0
15
30
45
60
75
90
105
16
36
56
76
96
TAP POSITION (DECIMAL)
TCv
(ppm
/°C)
10
50
SIGNAL AT WIPER
(WIPER UNLOADED)
SIGNAL AT WIPER
(WIPER UNLOADED) MOVEMENT
FROM 7Fh TO 00h
SCL
FIGURE 11. DCP CONNECTION IN SHUTDOWN MODE
RW
ISL22349
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