參數(shù)資料
型號: LTC1392I
廠商: Linear Technology Corporation
英文描述: Micropower Temperature, Power Supply and Differential Voltage Monitor
中文描述: 功耗溫度,電源和差分電壓監(jiān)視器
文件頁數(shù): 1/12頁
文件大?。?/td> 283K
代理商: LTC1392I
1
LTC1392
Micropower Temperature,
Power Supply and
Differential Voltage Monitor
1
2
3
4
8
7
6
5
V
CC
–V
IN
+V
IN
GND
D
IN
D
OUT
CLK
CS
LTC1392
LTC1392 TA01
5V
+
R
SENSE
I
LOAD
1
μ
F
MPU
(e.g., 68HC11)
P1.4
P1.3
P1.2
TEMPERATURE (
°
C)
–40
T
°
C
5
4
3
2
1
0
–1
–2
–3
–4
–5
0
40
60
LTC1392 TA02
–20
20
80
100
LTC1392C
GUARANTEED
LIMIT
LTC1392I
GUARANTEED
LIMIT
TYPICAL
D
U
ESCRIPTIO
S
FEATURE
I
Complete Ambient Temperature Sensor Onboard
I
System Power Supply Monitor
I
10-Bit Resolution Rail-to-Rail Common-Mode
Differential Voltage Input
I
Available in 8-Pin SO and PDIP
I
0.2
μ
A Supply Current When Idle
I
700
μ
A Supply Current When Sampling at
Maximum Rate
I
Single Supply Voltage: 4.5V to 6V
I
3-Wire Half-Duplex Serial I/O
I
Communicates with Most MPU Serial Ports and All
MPU Parallel I/O Ports
S
A
O
PPLICATI
The LTC
1392 is a micropower data acquisition system
designed to measure temperature, on-chip supply voltage
and a differential voltage. The differential inputs feature
rail-to-rail common mode input voltage range. The LTC1392
contains a temperature sensor, a 10-bit A/D converter with
sample-and-hold, a high accuracy bandgap reference and
a 3-wire half-duplex serial interface.
The LTC1392 can be programmed to measure ambient
temperature, power supply voltage and an external volt-
age at the differential input pins, that can also be used for
current measurement using an external sense resistor.
When measuring temperature, the output code of the A/D
converter is linearly proportional to the temperature in
°
C.
Production trimming achieves
±
2
°
C initial accuracy at
room temperature and
±
4
°
C over the full –40
°
C to 85
°
C
temperature range.
The on-chip serial port allows efficient data transfer to a
wide range of MPUs over three or four wires. This,
coupled with low power consumption, makes remote
location sensing possible and facilitates transmitting
data through isolation barriers.
U
I
Temperature Measurement
I
Power Supply Measurement
I
Current Measurement
I
Remote Data Acquisition
I
Environment Monitoring
, LTC and LT are registered trademarks of Linear Technology Corporation.
U
A
O
PPLICATI
TYPICAL
Complete Temperature, Supply Voltage and
Supply Current Monitor
Output Temperature Error
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