参数资料
| 型号： | ISL23345UFRZ |
| 厂商： | Intersil |
| 文件页数： | 1/19页 |
| 文件大小： | 0K |
| 描述： | IC DGTL POT QUAD 50K 20QFN |
| 标准包装： | 75 |
| 系列： | XDCP™ |
| 接片： | 256 |
| 电阻（欧姆）： | 50k |
| 电路数： | 4 |
| 温度系数： | 标准值 65 ppm/°C |
| 存储器类型： | 易失 |
| 接口： | I²C，2 线串口 |
| 电源电压： | 1.2 V ~ 5.5 V，1.7 V ~ 5.5 V |
| 工作温度： | -40°C ~ 125°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 20-VFQFN 裸露焊盘 |
| 供应商设备封装： | 20-QFN（3x4） |
| 包装： | 管件 |
1
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 1-888-468-3774
|Copyright Intersil Americas Inc. 2011. All Rights Reserved
Intersil (and design) and XDCP are trademarks owned by Intersil Corporation or one of its subsidiaries.
All other trademarks mentioned are the property of their respective owners
Quad, 256 Tap, Low Voltage Digitally Controlled
Potentiometer (XDCP)
ISL23345
The ISL23345 is a volatile, low voltage, low noise, low power,
256 tap, quad digitally controlled potentiometer (DCP) with an
I2C Bus interface. It integrates four DCP cores, wiper switches
and control logic on a monolithic CMOS integrated circuit.
Each digitally controlled potentiometer is implemented with a
combination of resistor elements and CMOS switches. The
position of the wipers are controlled by the user through the
I2C bus interface. Each potentiometer has an associated
volatile Wiper Register (WRi, i = 0, 1, 2, 3) that can be directly
written to and read by the user. The contents of the WRi
controls the position of the wiper. When powered on, the wiper
of each DCP will always commence at mid-scale (128 tap
position).
The low voltage, low power consumption, and small package
of the ISL23345 make it an ideal choice for use in battery
operated equipment. In addition, the ISL23345 has a VLOGIC
pin allowing down to 1.2V bus operation, independent from the
VCC value. This allows for low logic levels to be connected
directly to the ISL23345 without passing through a voltage
level shifter.
The DCP can be used as a three-terminal potentiometer or as a
two-terminal variable resistor in a wide variety of applications
including control, parameter adjustments, and signal processing.
Power supply margining
Trimming sensor circuits
Gain adjustment in battery powered instruments
RF power amplifier bias compensation
Features
Four potentiometers per package
256 resistor taps
10k
Ω, 50kΩ or 100kΩ total resistance
I2C serial interface
- No additional level translator for low bus supply
- Three address pins allow up to eight devices per bus
Maximum supply current without serial bus activity
(standby)
- 5A @ VCC and VLOGIC = 5V
- 2A @ VCC and VLOGIC = 1.7V
Shutdown Mode
- Forces the DCP into an end-to-end open circuit and RWi is
connected to RLi internally
- Reduces power consumption by disconnecting the DCP
resistor from the circuit
Power supply
-VCC = 1.7V to 5.5V analog power supply
-VLOGIC = 1.2V to 5.5V I2C bus/logic power supply
Wiper resistance: 70
Ω typical @ VCC = 3.3V
Power-on preset to mid-scale (128 tap position)
Extended industrial temperature range: -40°C to +125°C
20 Ld TSSOP or 20 QFN packages
Pb-free (RoHS compliant)
FIGURE 1. FORWARD AND BACKWARD RESISTANCE vs TAP
POSITION, 10k DCP
FIGURE 2. VREF ADJUSTMENT
0
2000
4000
6000
8000
10000
0
64
128
192
256
TAP POSITION (DECIMAL)
RESISTANCE
(
)
VREF_M
ISL28114
1 DCP
of
ISL23345
+
-
VREF
RL1
RW1
RH1
June 21, 2011
FN7872.0
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL23345UFRZ-T7A | 功能描述:数字电位计 IC 256 TAPVOLATILE I2C QUAD FL RNG IND 20LD RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| ISL23345UFRZ-TK | 功能描述:数字电位计 IC 256 TAP VOLATILE I2C QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| ISL23345UFVZ | 功能描述:数字电位计 IC 256 TAP VOLATILE I2C QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| ISL23345UFVZ-T7A | 功能描述:数字电位计 IC 256 TAPVOLATILE I2C QUAD FL RNG IND 20LD RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
| ISL23345UFVZ-TK | 功能描述:数字电位计 IC 256 TAP VOLATILE I2C QD FL RNG DCP 20LD RoHS:否 制造商:Maxim Integrated 电阻:200 Ohms 温度系数:35 PPM / C 容差:25 % POT 数量:Dual 每 POT 分接头:256 弧刷存储器:Volatile 缓冲刷: 数字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作电源电压:1.7 V to 5.5 V 电源电流:27 uA 最大工作温度:+ 125 C 安装风格:SMD/SMT 封装 / 箱体:TQFN-16 封装:Reel |
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