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G771 Datasheet(PDF) 3 Page - Global Mixed-mode Technology Inc

Part No. G771
Description  Two Remote Temperature Sensors with SMBus Serial Interface and System Reset Circuit
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Maker  GMT [Global Mixed-mode Technology Inc]
Homepage  http://www.gmt.com.tw
Logo 

 
 3 page
background image
Ver 0.2 Preliminary
Dec 11, 2001
TEL: 886-3-5788833
http://www.gmt.com.tw
3
G771
Global Mixed-mode Technology Inc.
Absolute Maximum Ratings
Vcc to GND……………….………….…….-0.3V to +6V
DXP1, DXP2 to GND……………0.3V to (Vcc + 0.3V)
DXN to GND……………………………...-0.3V to +0.8V
SMBCLK, SMBDATA,
ALERT to GND...-0.3V to +6V
SMBDATA,
ALERT Current…………...-1mA to +50mA
DXN Current………………………………………±1mA
ESD Protection (human body model)……………..2000V
Continuous Power Dissipation (TA= +70°C) SSOP
(de-rate 8.30mW/°C above +70°C)………….…667mW
Operating Temperature Range………-55°C to +125°C
Junction Temperature……………………....+150°C
Storage temperature Range…………..-65°C to +165°C
Lead Temperature (soldering,10sec)………….+300°C
Stresses beyond those listed under "Absolute Maximum Ratings" may cause permanent damage to the device. These are
stress ratings only, and functional operation of the device at these or any other conditions beyond those indicated in the opera-
tional sections of the specifications is not implied. Exposure to absolute maximum rating conditions for extended periods may
affect device reliability.
Electrical Characteristics
(Vcc = + 5V, TA = 60°C, unless otherwise noted.)
PARAMETER
CONDITIONS
MIN TYP MAX UNITS
Temperature Sensor
Temperature Resolution (Note 1)
Monotonicity guaranteed
8
Bits
TR = 0°C to +125°C
-5
5
Temperature Error, Remote Diode
(Notes 2 and 3)
TR = 60°C to +100°C
-3
3
°C
Temperature Error, On-chip Diode
(Notes 1 and 2)
TA = +60℃ to +100°C
±3
°C
Supply-Voltage Range
4.5
5
5.5
V
Under-voltage Lockout Threshold
Vcc input, disables A/D conversion, rising edge
2.6
2.8
2.95
V
Under-voltage Lockout Hysteresis
50
mV
Power-On Reset Threshold
Vcc , falling edge
1.0
1.7
2.5
V
POR Threshold Hysteresis
50
mV
SMBus static
3
10
Standby Supply Current
Logic inputs forced to Vcc or
GND
Hardware
or
software
standby, SMBCLK at 10kHz
200
µA
0.25 conv/sec
250
300
Average Operating Supply Current
Auto-convert mode, average
measured over 4sec. Logic
inputs forced to Vcc or GND
2.0 conv/sec
300
350
µA
Conversion Time
From stop bit to conversion complete (all channels)
94
125
156
ms
Conversion Rate Timing Error
Auto-convert mode
-25
25
%
High level
120
160
200
Remote-Diode Source Current
DXP forced to 1.5V
Low level
15
20
25
µA
SMBus Interface
Logic Input High Voltage
SMBCLK, SMBDATA; Vcc = 4.5V to 5.5V
2.4
V
Logic Input Low Voltage
SMBCLK, SMBDATA; Vcc = 4.5V to 5.5V
0.8
V
Logic Output Low Sink Current
, SMBDATA forced to 0.4V
6
mA
Output High Leakage Current
forced to 5.5V
1
µA
Logic Input Current
Logic inputs forced to Vcc or GND
-2
2
µA
SMBus Input Capacitance
SMBCLK, SMBDATA
5
pF
SMBus Clock Frequency
(Note 4)
DC
100
KHz
SMBCLK Clock Low Time
tLOW , 10% to 10% points
4.7
µs
SMBCLK Clock High Time
tHIGH , 90% to 90% points
4
µs
SMBus Start-Condition Setup Time
4.7
µs
SMBus Repeated Start-Condition Setup Time tSU : STA , 90% to 90% points
500
ns
SMBus Start-Condition Hold Time
tHD: STA , 10% of SMBDATA to 90% of SMBCLK
4
µs
SMBus Start-Condition Setup Time
tSD: STO , 90% of SMBDATA to 10% of SMBDATA
4
µs
SMBus Data Valid to SMBCLK Rising-Edge
Time
tSU: DAT , 10% or 90% of SMBDATA to 10% of SMBCLK
800
ns
SMBus Data-Hold Time
tHD : DAT(Note 5)
0
µs
SMBCLK Falling Edge to SMBus Data-Valid
Time
Master clocking in data
1
µs




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