參數(shù)資料
型號(hào)： DS1856E-020+
廠商： Maxim Integrated Products
文件頁(yè)數(shù)： 1/31頁(yè)
文件大小： 0K
描述： IC RES TEMP-CNTRL 20/20K 16TSSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 1
接片： 256
電阻（歐姆）： 20k
電路數(shù)： 2
溫度系數(shù)： 標(biāo)準(zhǔn)值 50 ppm/°C
存儲(chǔ)器類型： 非易失
接口： 2 線串口
電源電壓： 2.85 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-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 16-TSSOP
包裝： 管件
Dual, Temperature-Controlled Resistors with Inter-
nally Calibrated Monitors and Password Protection
EVALUATION KIT AVAILABLE
For pricing, delivery, and ordering information, please contact Maxim Direct at
1-888-629-4642, or visit Maxim Integrated’s website at www.maximintegrated.com.
DS1856
General Description
The DS1856 dual, temperature-controlled, nonvolatile
(NV) variable resistors with three monitors consists of
two 256-position, linear, variable resistors; three analog
monitor inputs (MON1, MON2, MON3); and a direct-to-
digital temperature sensor. The device provides an
ideal method for setting and temperature-compensating
bias voltages and currents in control applications using
minimal circuitry. The variable resistor settings are
stored in EEPROM memory and can be accessed over
the 2-wire serial bus.
Relative to other members of the family, the DS1856 is
essentially a DS1859 with a DS1852-friendly memory
map. In particular, the DS1856 can be configured so
the 128 bytes of internal Auxiliary EEPROM memory is
mapped into Main Device Table 00h and Table 01h,
maintaining
compatibility
between
both
the
DS1858/DS1859 and the DS1852. The DS1856 also
features password protection equivalent to the DS1852,
further enhancing compatibility between the two.
Applications
Optical Transceivers
Optical Transponders
Instrumentation and Industrial Controls
RF Power Amps
Diagnostic Monitoring
Features
o SFF-8472 Compatible
o Five Monitored Channels (Temperature, VCC,
MON1, MON2, MON3)
o Three External Analog Inputs (MON1, MON2, MON3)
That Support Internal and External Calibration
o Scalable Dynamic Range for External Analog Inputs
o Internal Direct-to-Digital Temperature Sensor
o Alarm and Warning Flags for All Monitored
Channels
o Two Linear, 256-Position, Nonvolatile Temperature-
Controlled Variable Resistors
o Resistor Settings Changeable Every 2°C
o Three Levels of Security
o Access to Monitoring and ID Information
Configurable with Separate Device Addresses
o 2-Wire Serial Interface
o Two Buffers with TTL/CMOS-Compatible Inputs and
Open-Drain Outputs
o Operates from a 3.3V or 5V Supply
o -40°C to +95°C Operating Temperature Range
Ordering Information
Rev 1; 2/06
PART
RES0/RES1
RESISTANCE
(k
Ω)
PIN-PACKAGE
DS1856E-050
50/50
16 TSSOP
DS1856E-050/T&R
50/50
16 TSSOP
DS1856B-050
50/50
16 CSBGA
A
TOP VIEW
B
C
D
1
CSBGA (4mm x 4mm)
1.0mm PITCH
3
24
MON3
OUT1
IN2
MON1
L0
GND
N.C.
L1
H0
SDA
OUT2
H1
VCC
SCL
IN1
MON2
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
SDA
VCC
H1
L1
H0
L0
MON3
MON2
MON1
TSSOP
SCL
OUT1
IN2
IN1
OUT2
N.C.
GND
DS1856
Pin Configurations
DS1856
SDA
1
2
3
4
5
6
7
8
16
0.1
μF
15
14
13
12
11
10
9
SCL
OUT1
IN1
OUT2
IN2
N.C.
GND
VCC
H1
L1
H0
L0
MON3
MON2
MON1
Rx POWER*
DIAGNOSTIC
INPUTS
TO LASER
MODULATION
CONTROL
TO LASER BIAS
CONTROL
DECOUPLING
CAPACITOR
Tx POWER*
Tx BIAS*
*SATISFIES SFF-8472 COMPATIBILITY
VCC
VCC = 3.3V
4.7k
Ω
4.7k
Ω
Tx-FAULT
LOS
2-WIRE
INTERFACE
Typical Operating Circuit
Ordering Information continued at end of data sheet.
+
Denotes lead-free package.
T&R denotes tape-and-reel package.
Note: All devices are specified over the -40°C to +95°C tem-
perature range.
Visit www.maximintegrated.com/products/patents for
product patent marking information.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
DS1856E-020/R 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection
DS1856E-020/T 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Dual, Temperature-Controlled Resistors with Internally Calibrated Monitors and Password Protection
DS1856E-020/T&R 制造商:Maxim Integrated Products 功能描述:DUAL TEMP R 20K3MONTSSOP T&R - Tape and Reel
DS1856E-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
DS1856E-020+ 功能描述:數(shù)字電位計(jì) 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(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
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