參數(shù)資料
型號(hào)： G781
廠商： Electronic Theatre Controls, Inc.
元件分類(lèi)： 溫度/濕度傳感器
英文描述： 【1∑C Remote and Local Temperature Sensor with SMBus Serial Interface
中文描述： 【1ΣC遠(yuǎn)程和本地溫度傳感器，帶有SMBus串行接口
文件頁(yè)數(shù)： 3/14頁(yè)
文件大?。?/td> 342K
代理商： G781
Ver: 1.0
Oct 02, 2002
TEL: 886-3-5788833
http://www.gmt.com.tw
3
Global Mixed-mode Technology Inc.
Electrical Characteristics
(continued)
(VCC = + 3.3V, T
A
= 0 to +85°C, unless otherwise noted.)
G781
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
SMBus Interface
Logic Input High Voltage
STBY
, SMBCLK, SMBDATA; Vcc = 3V to 5.5V
2.4
V
Logic Input Low Voltage
STBY
, SMBCLK, SMBDATA; Vcc = 3V to 5.5V
0.8
V
Logic Output Low Sink Current
ALERT
, SMBDATA forced to 0.4V
ALERT
forced to 5.5V
Logic inputs forced to VCC or GND
SMBCLK, SMBDATA
SMBCLK low time for interface reset
t
LOW
, 10% to 10% points
t
HIGH
, 90% to 90% points
6
-2
4.7
4
4.7
500
4
4
mA
μA
μA
pF
kHz
ms
μs
μs
μs
ns
μs
μs
ALERT
Output High Leakage Current
Logic Input Current
SMBus Input Capacitance
SMBus Clock Frequency
SMBus Timeout
SMBCLK Clock Low Time
SMBCLK Clock High Time
SMBus Start-Condition Setup Time
SMBus Repeated Start-Condition Setup Time t
SU :
STA ,
90% to 90% points
SMBus Start-Condition Hold Time
SMBus Stop-Condition Setup Time
SMBus Data Valid to SMBCLK Rising-Edge
Time
SMBus Data-Hold Time
SMBCLK Falling Edge to SMBus Data-Valid
Time
Note 1:
A remote diode is any diode-connected transistor from Table1. T
R
is the junction temperature of the remote
of the remote diode. See Remote Diode Selection for remote diode forward voltage requirements.
Note 2:
Guaranteed by design but not 100% tested.
1
2
5
30
100
t
HD: STA ,
10% of SMBDATA to 90% of SMBCLK
t
SD: STO ,
90% of SMBCLK to 10% of SMBDATA
t
SU: DAT ,
10% or 90% of SMBDATA to 10% of
SMBCLK
t
HD : DAT
800
ns
300
ns
Master clocking in data
1
μs
Pin Description
PIN
1
NAME
VCC
FUNCTION
Supply Voltage Input, 3V to 5.5V. Bypass to GND with a 0.1μF capacitor.
Combined Current Source and A/D Positive Input for remote-diode channel. Do not leave DXP float-
ing; tie DXP to DXN if no remote diode is used. Place a 2200pF capacitor between DXP and DXN for
noise filtering.
Combined Current Sink and A/D Negative Input.
2
DXP
3
DXN
4
THERM
Open-drain output. Requires pull-up to VCC.
5
6
7
8
GND
ALERT
SMBus Alert (interrupt) Output, open drain
SMBDATA SMBus Serial-Data Input / Output, open drain
SMBCLK SMBus Serial-Clock Input
Ground
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