參數(shù)資料
型號(hào)： MAX1668MEE+T
廠商： Maxim Integrated
文件頁數(shù)： 1/17頁
文件大小： 497K
描述： IC TEMP SENS REMOTE 16QSOP
產(chǎn)品培訓(xùn)模塊： Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝： 2,500
功能： 溫度計(jì)，恒溫計(jì)
傳感器類型： 內(nèi)部和外部
感應(yīng)溫度： -55°C ~ 125°C，外部傳感器
精確度： ±3.5°C 本地（最大），±5°C 遠(yuǎn)程（最大）
拓?fù)洌?/td> ADC，比較器，多路復(fù)用器，寄存器庫
輸出類型： I²C?/SMBus?
輸出警報(bào)： 是
輸出風(fēng)扇： 無
電源電壓： 3 V ~ 5.5 V
工作溫度： -55°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 16-SSOP（0.154"，3.90mm 寬）
供應(yīng)商設(shè)備封裝： 16-QSOP
包裝： 帶卷 (TR)
________________General Description
The MAX1668/MAX1805/MAX1989 are precise multi-
channel digital thermometers that report the tempera-
ture of all remote sensors and their own packages. The
remote sensors are diode-connected transistorstypi-
cally low-cost, easily mounted 2N3904 NPN typesthat
replace conventional thermistors or thermocouples.
Remote accuracy is ?癈 for multiple transistor manu-
facturers, with no calibration needed. The remote chan-
nels can also measure the die temperature of other ICs,
such as microprocessors, that contain an on-chip,
diode-connected transistor.
The 2-wire serial interface accepts standard system
management bus (SMBus") write byte, read byte, send
byte, and receive byte commands to program the alarm
thresholds and to read temperature data. The data for-
mat is 7 bits plus sign, with each bit corresponding to
1癈, in twos-complement format.
The MAX1668/MAX1805/MAX1989 are available in
small, 16-pin QSOP surface-mount packages. The
MAX1989 is also available in a 16-pin TSSOP.
________________________Applications
____________________________Features
o Multichannel
4 Remote, 1 Local (MAX1668/MAX1989)
2 Remote, 1 Local (MAX1805)
o No Calibration Required
o SMBus 2-Wire Serial Interface
o Programmable Under/Overtemperature Alarms
o Supports SMBus Alert Response
o Accuracy
?癈 (+60癈 to +100癈, Local)
?癈 (-40癈 to +125癈, Local)
?癈 (+60癈 to +100癈, Remote)
o 3?/SPAN>A (typ) Standby Supply Current
o 700?/SPAN>A (max) Supply Current
o Small, 16-Pin QSOP/TSSOP Packages
Multichannel Remote/Local
Temperature Sensors
________________________________________________________________ Maxim Integrated Products   1
SMBCLK
ADD0 ADD1
V
CC
STBY
GND
ALERT
SMBDATA
DXP1
DXP4
DXN4
INTERRUPT
TO 礐
3V TO 5.5V
200&
0.1礔
CLOCK
10k& EACH
DATA
DXN1
2200pF
2200pF
* DIODE-CONNECTED TRANSISTOR
*
*
MAX1668
MAX1805
MAX1989
Pin Configuration
16
15
14
13
12
11
10
9
1
2
3
4
5
6
7
8
DXP1
GND
STBY
SMBCLK
SMBDATA
ALERT
ADD0
ADD1
V
CC
TOP VIEW
MAX1668
MAX1805
MAX1989
QSOP/TSSOP
DXN1
DXP2
(N.C.) DXN3
DXN2
(N.C.) DXP3
(N.C.) DXP4
( ) ARE FOR MAX1805.
(N.C.) DXN4
Typical Operating Circuit
19-1766; Rev 2; 5/03
PART
MAX1668MEE
-55癈 to +125癈
TEMP RANGE
PIN-PACKAGE
16 QSOP
_______________Ordering Information
SMBus is a trademark of Intel Corp.
MAX1805MEE
-55癈 to +125癈
16 QSOP
Desktop and Notebook
Computers
LAN Servers
Industrial Controls
Central-Office Telecom
Equipment
Test and Measurement
Multichip Modules
MAX1989MEE
-55癈 to +125癈
16 QSOP
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxims website at www.maxim-ic.com.
MAX1989MUE
-55癈 to +125癈
16 TSSOP
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