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DS1854E-050 Datasheet

  • DS1854E-050

  • Dual Temperature-Controlled Resistors with Two Monitors

  • 22頁(yè)

  • MAXIM   MAXIM

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Rev 0; 1/03
Dual Temperature-Controlled Resistors with
Two Monitors
General Description
The DS1854 dual temperature-controlled nonvolatile
(NV) variable resistors with two monitors consists of two
50k鈩?256-position linear variable resistors, two analog
monitor inputs (MON1, MON2), 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 min-
imal circuitry. The variable resistor settings are stored in
EEPROM memory and can be accessed over the 2-wire
serial bus.
Features
鈾?/div>
Four Total Monitored Channels (Temperature,
V
CC
, MON1, MON2)
鈾?/div>
Two External Analog Inputs (MON1, MON2)
鈾?/div>
Internal Direct-to-Digital Temperature Sensor
鈾?/div>
Two 50k鈩? Linear, 256-Position, Nonvolatile
Temperature-Controlled Variable Resistors
鈾?/div>
Resistor Settings Changeable Every 2擄C
鈾?/div>
Access to Monitoring and ID Information
Configurable with Separate Device Addresses
鈾?/div>
Resistor Disable (Open-Circuit) Function
鈾?/div>
2-Wire Serial Interface
鈾?/div>
Two Buffers with TTL/CMOS-Compatible Inputs
and Open-Drain Outputs
鈾?/div>
Operates from a 3.3V or 5V Supply
鈾?/div>
SFF-8472 Compatible
DS1854
Applications
Optical Transceivers
Optical Transponders
Instrumentation and Industrial Controls
RF Power Amps
Diagnostic Monitoring
Ordering Information
PART
DS1854E-050
DS1854E-050/T&R
DS1854B-050
TEMP RANGE PIN-PACKAGE
-40擄C to +95擄C 16 TSSOP
-40擄C to +95擄C
16 TSSOP
(Tape-and-Reel)
-40擄C to +95擄C 16-Ball CSBGA
Typical Operating Circuit
V
CC
V
CC
= 3.3V
4.7k鈩?/div>
2-WIRE
INTERFACE
TX-FAULT
4.7k鈩?/div>
1
2
3
4
5
LOS
GROUND TO
DISABLE WRITE
PROTECT
6
7
8
SDA
SCL
OUT1
IN1
OUT2
IN2
WPEN
GND
V
CC
H1
L1
16
15
14
DECOUPLING
CAP
Pin Configurations
TOP VIEW
A
IN1
SCL
V
CC
H1
1 SDA
2 SCL
B
OUT2
SDA
H0
3 OUT1
L1
4 IN1
C
WPEN
IN2
OUT1
5 OUT2
MON2
6 IN2
7 WPEN
MON1
4
8 GND
V
CC
16
H1 15
L1 14
H0 13
0.1碌F
TO LASER BIAS
CONTROL
TO LASER
MODULATION
CONTROL
DIAGNOSTIC
INPUTS
0 TO 2.5V FS
DS1854
13
H0
12
L0
MON2
MON1
RHIZ
DS1854
L0 12
MON2 11
MON1 10
RHIZ 9
11 Rx POWER*
10 Tx BIAS*
9 Tx DISABLE
D
GND
1
L0
2
RHIZ
3
*Rx POWER AND Tx BIAS CAN BE ARBITRARILY
ASSIGNED TO THE MON INPUTS
16-BALL CSBGA (4mm x 4mm)
1.0mm PITCH
16 TSSOP
______________________________________________
Maxim Integrated Products
1
For pricing delivery, and ordering information please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.

DS1854E-050 產(chǎn)品屬性

  • Lead (SnPb) Finish for COTSObsolescence Mitigation Program

  • 96

  • 集成電路 (IC)

  • 數(shù)據(jù)采集 - 數(shù)字電位器

  • -

  • 256

  • 50k

  • 2

  • 標(biāo)準(zhǔn)值 50 ppm/°C

  • 非易失

  • I²C（設(shè)備位址）

  • 3 V ~ 5.5 V

  • -40°C ~ 95°C

  • 表面貼裝

  • 16-TSSOP（0.173"，4.40mm 寬）

  • 16-TSSOP

  • 管件

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