參數(shù)資料
型號： DS1857B-050
廠商： Maxim Integrated Products
文件頁數(shù)： 1/22頁
文件大?。?/td> 0K
描述： IC RES TEMP 50/50K W/2MON 16-BGA
產(chǎn)品培訓模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標準包裝： 810
接片： 256
電阻（歐姆）： 50k
電路數(shù)： 2
溫度系數(shù)： 標準值 50 ppm/°C
存儲器類型： 非易失
接口： I²C（設備位址）
電源電壓： 3 V ~ 5.5 V
工作溫度： -40°C ~ 95°C
安裝類型： 表面貼裝
封裝/外殼： 16-LBGA，CSPBGA
供應商設備封裝： 16-CSBGA（4x4）
包裝： 托盤
DS1857
Dual Temperature-Controlled Resistors with
External Temperature Input and Monitors
______________________________________________ Maxim Integrated Products
1
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.
General Description
The DS1857 dual temperature-controlled nonvolatile
(NV) variable resistors with external temperature input
and monitors consists of two 50k 256-position linear
variable resistors, two analog monitor inputs (MON1,
MON2), and an external temperature sensor input. The
device provides an ideal method for setting and tem-
perature-compensating bias voltages and currents in
control applications using minimal circuitry. The vari-
able resistor settings are stored in EEPROM memory
and can be accessed over the 2-wire serial bus.
Applications
Optical Transceivers
Optical Transponders
Instrumentation and Industrial Controls
RF Power Amps
Diagnostic Monitoring
Features
Four Total Monitored Channels (Temperature,
VCC, MON1, MON2)
Two External Analog Inputs (MON1, MON2)
Interface to External Temperature Sensor (LM50)
Two 50k, Linear, 256-Position, Nonvolatile
Temperature-Controlled Variable Resistors
Resistor Settings Changeable Every 2°C
Access to Monitoring and ID Information
Configurable with Separate Device Addresses
Resistor Disable (Open-Circuit) Function
2-Wire Serial Interface
Three Address Lines for Multiple Devices
Operates from a 3.3V or 5V Supply
SFF-8472 Compatible
Ordering Information
Rev 1; 6/04
PART
TEMP RANGE
PIN-PACKAGE
DS1857E-050
-40°C to +95°C 16 TSSOP
DS1857E-050/T&R
-40°C to +95°C
16 TSSOP
(Tape-and-Reel)
DS1857B-050
-40°C to +95°C 16 Ball CSBGA
A
TOP VIEW
B
C
D
1
16-BALL CSBGA (4mm x 4mm)
1.0mm PITCH
16 TSSOP
3
24
EXTTMP
A0
WPEN
RHIZ
MON2
MON1
L0
GND
H1
VCC
SCL
A1
L1
H0
SDA
A2
DS1857
SDA
1
2
3
4
5
6
7
8
16
15
14
13
12
11
10
9
SCL
A0
A1
A2
WPEN
RHIZ
GND
VCC
H1
L1
H0
L0
EXTTMP
MON2
MON1
Pin Configurations
DS1857
SDA
1
2
3
4
5
6
7
8
16
0.1F
15
14
13
12
11
10
9
SCL
A0**
A1**
A2**
WPEN
RHIZ
GND
VCC
H1
L1
H0
L0
EXTTMP
MON2
MON1
Tx DISABLE
TO EXTERNAL TEMPERATURE
SENSOR, SUCH AS LM50
DIAGNOSTIC
INPUTS
0 TO 2.5V FS
TO LASER BIAS
CONTROL
TO LASER MODULATION
CONTROL
DECOUPLING
CAP
Rx POWER*
Tx BIAS*
*Rx POWER AND Tx BIAS CAN BE ARBITRARILY
ASSIGNED TO THE MON INPUTS.
**ADDRESS INPUTS DETERMINE THE MAIN DEVICE 2-WIRE
SLAVE ADDRESS WHEN ADFIX = 0. THIS ADDRESS MUST BE
DIFFERENT THAN THE AUX DEVICE ADDRESS WHEN ADEN = 0.
VCC
VCC = 3.3V
4.7k
2-WIRE
INTERFACE
GROUND TO
DISABLE WRITE
PROTECT
Typical Operating Circuit
相關PDF資料
PDF描述
FST3245QSC IC SWITCH BUS 8BIT TTL 20QSOP
MS3108A28-2S CONN PLUG 14POS RT ANG W/SCKT
MS3120F-20-41S CONN RECEPT 41POS W/SOCKT CRIMP
IDT2309A-1DCGI IC CLK BUFFER ZD STD DRV 16-SOIC
DS1855E-010/T&R IC RES TEMP-CNTRL 10/10K 14TSSOP
相關代理商/技術參數(shù)
參數(shù)描述
DS1857B-050+ 功能描述:數(shù)字電位計 IC Dual Temp-Controlled Resistors 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
DS1857E-050 功能描述:數(shù)字電位計 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
DS1857E-050/R 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
DS1857E-050/T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
DS1857E-050+ 功能描述:數(shù)字電位計 IC Dual Temp-Controlled Resistors 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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
發(fā)布緊急采購，3分鐘左右您將得到回復。

采購需求

(若只采購一條型號，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

發(fā)布成功！您可以繼續(xù)發(fā)布采購。也可以進入我的后臺，查看報價

*型號 *數(shù)量 廠商 批號 封裝
添加更多采購

我的聯(lián)系方式

*
*
*