參數(shù)資料
型號： DS1857B-050
廠商： MAXIM INTEGRATED PRODUCTS INC
元件分類： 模擬信號調(diào)理
英文描述： Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
中文描述： SPECIALTY ANALOG CIRCUIT, PBGA16
封裝： 4 X 4 MM, 1 MM PITCH, CSBGA-16
文件頁數(shù)： 1/22頁
文件大?。?/td> 832K
代理商： DS1857B-050
D
Dual Temperature-Controlled Resistors with
External Temperature Input and Monitors
______________________________________________
Maxim Integrated Products
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.
1
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,
V
CC
, 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
-40°C to +95°C 16 TSSOP
PIN-PACKAGE
DS1857E-050
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
2
4
EXTTMP
A0
WPEN
RHIZ
MON2
MON1
L0
GND
H1
V
CC
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
V
CC
H1
L1
H0
L0
EXTTMP
MON2
MON1
Pin Configurations
DS1857
SDA
1
2
3
4
5
6
7
8
16
0.1
μ
F
15
14
13
12
11
10
9
SCL
A0**
A1**
A2**
WPEN
RHIZ
GND
V
CC
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.
V
CC
V
CC
V
CC
= 3.3V
4.7k
4.7k
2-WIRE
INTERFACE
GROUND TO
DISABLE WRITE
PROTECT
Typical Operating Circuit
相關(guān)PDF資料
PDF描述
DS1857E-050 Dual Temperature-Controlled Resistors with External Temperature Input and Monitors
DS1858 Dual Temperature-Controlled Resistors with Three Monitors
DS1858B-050 Dual Temperature-Controlled Resistors with Three Monitors
DS1858E-050 Dual Temperature-Controlled Resistors with Three Monitors
DS1859B-050 Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors
相關(guān)代理商/技術(shù)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
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