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參數(shù)資料
| 型號(hào)： | DS3903E |
| 廠商： | Maxim Integrated Products |
| 文件頁數(shù)： | 1/11頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT NV TRIPLE 128POS 20-TSSOP |
| 標(biāo)準(zhǔn)包裝： | 74 |
| 接片： | 128 |
| 電阻（歐姆）： | 10k，10k，90k |
| 電路數(shù)： | 3 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 ±300 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 ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-TSSOP（0.173"，4.40mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 20-TSSOP |
| 包裝： | 管件 |
General Description
The DS3903 contains three nonvolatile (NV) low tem-
perature coefficient digital potentiometers, which can
be accessed through a 2-wire bus. It operates in both
3V and 5V systems, and it features a write-protect pin
that can lock the positions of the potentiometers. An
address pin allows two DS3903s to be placed on the
same 2-wire bus.
Applications
Power-Supply Calibration
Mobile Phones and PDAs
Fiber Optics Transceiver Modules
Portable Electronics
A Small, Low-Cost Replacement for Mechanical
Potentiometers
Features
Three 128-Position Linear Potentiometers
(Two 10k
, One 90k)
NV Wiper Storage
0 to 5.5V on Any Potentiometer Terminal
Independent of VCC
Low End-to-End Temperature Coefficient
Operates on an Industry-Standard 2-Wire Bus
Write-Protect Pin
Supply Voltage: 3V or 5V
Operating Temperature Range: -40°C to +85°C
Packaging: 20-Pin TSSOP
DS3903
Triple 128-Position Nonvolatile
Digital Potentiometer
_____________________________________________ Maxim Integrated Products
1
20
18
17
16
15
14
13
11
1
3
4
5
6
7
8
10
12
9
SDA
VCC
19
2
SCL
N.C.
H0
W0
H1
H2
W2
TSSOP
A0
WP
W1
N.C.
L0
L1
L2
GND
DS3903
Pin Configuration
0.1
F
4.7k
2-WIRE
MASTER
VCC
VREF1
VREF2
5.1k
Iref
VCC
SCL
SDA
POTENTIOMETER 2
10k
ADDDR FAh
POTENTIOMETER 0
10k
ADDDR F9h
POTENTIOMETER 1
90k
ADDDR F8h
WP
A0
GND
4.7k
VARIABLE RESISTANCE
FOR ADJUSTABLE
CURRENT SOURCE
HIGH-OUTPUT-IMPEDANCE
VOLTAGE REFERENCE
BUFFERED
VOLTAGE
REFERENCE
VCC
MAX427
DS3903
Typical Operating Circuit
Ordering Information
Rev 0; 6/02
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
DS3903E-020
-40°C to +85°C
20 TSSOP
DS3903E-020/T&R
-40°C to +85°C
20 TSSOP
(Tape-and-Reel)
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| DS3903E+ | 制造商:Maxim Integrated Products 功能描述:DGTL POTENTIOMETER 128POS 10.5KOHM/90KOHM TRIPLE 20TSSOP - Rail/Tube |
| DS3903E-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 |
| DS3903E-020/R | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Triple 128-Position Nonvolatile Digital Potentiometer |
| DS3903E-020/T | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Triple 128-Position Nonvolatile Digital Potentiometer |
| DS3903E-020/T&R | 制造商:Maxim Integrated Products 功能描述:TRIPLE NV POTENTIOMETER T&R - Tape and Reel 制造商:Maxim Integrated Products 功能描述:IC POT NV TRIPLE 128POS 20-TSSOP |
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