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參數資料
| 型號： | ISL23445WFRZ |
| 廠商： | Intersil |
| 文件頁數： | 5/20頁 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT 256POS 10K 20TSSOP |
| 產品培訓模塊： | Solutions for Industrial Control Applications |
| 標準包裝： | 75 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 電阻（歐姆）： | 10k |
| 電路數： | 4 |
| 溫度系數： | 標準值 125 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 4 線 SPI（芯片選擇） |
| 電源電壓： | 1.2 V ~ 5.5 V，1.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | * |
| 封裝/外殼： | * |
| 供應商設備封裝： | * |
| 包裝： | * |
ISL23445
13
FN7874.0
June 21, 2011
Functional Pin Descriptions
Potentiometers Pins
RHI AND RLI
The high (RHi, i = 0, 1, 2, 3) and low (RLi, i = 0, 1, 2, 3) terminals
of the ISL23445 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 255 decimal, the wiper will be closest
to RHi, and with the WRi set to 0, the wiper is closest to RLi.
RWI
RWi (i = 0, 1, 2, 3) 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.
Power Pins
VCC
Power terminal for the potentiometer section analog power
source. Can be any value needed to support the voltage range of
the DCP pins, from 1.7V to 5.5V, independent of the VLOGIC
voltage.
Bus Interface Pins
SERIAL CLOCK (SCK)
This input is the serial clock of the SPI serial interface.
SERIAL DATA INPUT (SDI)
The SDI is a serial data input pin for SPI interface. It receives
operation code, wiper address and data from the SPI remote
host device. The data bits are shifted in at the rising edge of the
serial clock SCK, while the CS input is low.
FIGURE 21. WIPER LARGE SIGNAL SETTLING TIME
FIGURE 22. POWER-ON START-UP IN VOLTAGE DIVIDER MODE
FIGURE 23. 10k
Ω -3dB CUT OFF FREQUENCY
FIGURE 24. STANDBY CURRENT vs TEMPERATURE
Typical Performance Curves (Continued)
1V/DIV
0.2s/DIV
WIPER
CS
0.5V/DIV
20s/DIV
VCC
WIPER
0.5V/DIV, 0.2s/DIV
-3dB FREQUENCY = 1.437MHz AT MIDDLE TAP
CH1: RH TERMINAL
CH2: RW TERMINAL
0
0.2
0.4
0.6
0.8
1.0
1.2
1.4
1.6
1.8
-40
-15
10
35
60
85
110
VCC = 1.7V, VLOGIC = 1.2V
VCC = 5.5V, VLOGIC = 5.5V
S
T
A
N
D
B
Y
C
U
R
E
N
T
I C
C
(
A
)
TEMPERATURE (°C)
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相關代理商/技術參數 |
參數描述 |
|---|---|
| ISL23445WFRZ-T7A | 功能描述:數字電位計 IC 256 TAPVOLATILE SPI QUAD FL RNG IND 20LD RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL23445WFRZ-TK | 功能描述:數字電位計 IC 256 TAP VOLATILE SPI QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL23445WFVZ | 功能描述:數字電位計 IC 256 TAP VOLATILE SPI QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL23445WFVZ-T7A | 功能描述:數字電位計 IC 256 TAPVOLATILE SPI QUAD FL RNG IND 20LD RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| ISL23445WFVZ-TK | 功能描述:數字電位計 IC 256 TAP VOLATILE SPI QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
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