參數(shù)資料
型號(hào)： DS3905
英文描述： Triple. 128-Position. Nonvolatile. Variable. Digital Resistor/Switch
中文描述： 三路、128抽頭、非易失、數(shù)控可變電阻/開關(guān)
文件頁(yè)數(shù)： 1/11頁(yè)
文件大小： 254K
代理商： DS3905
General Description
The DS3904/DS3905 contain three nonvolatile (NV) low
temperature coefficient, variable digital resistors. Each
resistor has 128 user-selectable positions. Additionally,
the DS3904/DS3905 have a high-impedance setting that
allows each resistor to function as a digital switch. The
DS3904/DS3905 can operate over a 2.7V to 5.5V supply
voltage range, and communication with the device is
achieved through a 2-wire serial interface. Address pins
allow multiple DS3904/DS3905s to operate on the same
two-wire bus. The DS3904 has one address pin, allow-
ing two DS3904s to share the bus, while the DS3905
has three address pins, allowing up to eight DS3905s to
share a common bus. The low-cost and small size of the
DS3904/DS3905 make them ideal replacements for con-
ventional mechanical trimming resistors.
Applications
Power-Supply Calibration
Cell Phones and PDAs
Fibre Optic Transceiver Modules
Portable Electronics
Small and Low-Cost Replacement for
Conventional Mechanical Trimming Resistors/
Dip Switches
Test Equipment
Features
Three 20k
, 128-Position Linear Digital Resistors
Resistor Settings are Stored in NV Memory
Each Resistor has a High-Impedance Setting for
Switch Operation to Control Digital Logic
Low Temperature Coefficient
2-Wire Serial Interface
2.7V to 5.5V Operating Range
-40°C to +85°C Industrial Temperature
Packaging: 8-Pin μSOP for DS3904, 10-pin μSOP
for DS3905
Ordering Information
D
Triple 128-Position Nonvolatile Digital
Variable Resistor/Switch
_____________________________________________
Maxim Integrated Products
1
8
6
5
1
3
4
SDA
TOP VEIW
A0
7
2
SCL
H0
H1
H2
μ
SOP
V
CC
GND
DS3904
10
1
A1
A2
9
2
SDA
A0
μ
SOP
8
3
H0
SDL
7
4
H1
V
CC
6
5
H2
GND
DS3905
Pin Configurations
0.1
μ
F
4.7k
2-WIRE
MASTER
V
CC
V
CC
H0
H1
H2
RHIZ
R
10
V
CC
SCL
SDA
(DS3905 ONLY)
A1
A2
RESISTOR 0
20k
ADDR F8h
RESISTOR 1
20k
ADDR F9h
RESISTOR 2
20k
ADDR FAh
A0
GND
4.7k
VARIABLE RESISTANCE
FOR ADJUSTABLE
CURRENT SOURCE
INTERFACE EXAMPLES
2-WIRE
ADDRESSABLE
SWITCH (USING 00h
AND RHIZ SETTINGS)
GAIN
CONTROL
V
IN
DS3904/DS3905
V
CC
RHIZ
RHIZ
R
11
DIGITAL
LOGIC
R
12
Typical Operating Circuit
Rev 1; 8/03
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
PART
TEMP RANGE
PIN-
PACKAGE
8 μSOP
10 μSOP
RESISTANCE
DS3904U-020
DS3905U-020
-40
°
C to +85
°
C
-40
°
C to +85
°
C
20k
+ Hi-Z
20k
+ Hi-Z
相關(guān)PDF資料
PDF描述
DS3904U-020 Triple 128-Position Nonvolatile Digital Variable Resistor/Switch
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS3905U-020 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
DS3905U-020/T&R 制造商:Maxim Integrated Products 功能描述:TRIPLE NV DIG RES T&R - Tape and Reel
DS3905U-020/T&R 功能描述:數(shù)字電位計(jì) IC RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
DS3905U-020+ 功能描述:數(shù)字電位計(jì) IC Triple 128-Position Nonvolatile RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)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(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
DS3905U-020+T&R 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 128POS 20KOHM TRIPLE 10USOP - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT NV TRIPLE 128POS 10-USOP 制造商:Maxim Integrated Products 功能描述:Digital Potentiometer ICs Triple 128-Position Nonvolatile
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