Global Mixed-mode Technology Inc.
Electrical Characteristics
(continued)
(Vcc = + 3.3V, T
A
= 0 to +85°C, unless otherwise noted.)
PARAMETER
CONDITIONS
SMBus Interface
Logic Input High Voltage
Logic Input Low Voltage
Logic Output Low Sink Current
ALERT
Output High Leakage Current
G767
MIN TYP MAX UNITS
2.2
---
6
---
-1
---
DC
4.7
4
4.7
500
4
4
800
0
---
---
---
---
---
---
5
---
---
---
---
---
---
---
---
---
---
---
0.8
---
1
1
---
100
---
---
---
---
---
---
---
---
1
V
V
mA
µA
µA
pF
kHz
µs
µs
µs
ns
µs
µs
ns
µs
µs
STBY
, SMBCLK, SMBDATA; Vcc = 3V to 5.5V
STBY
, SMBCLK, SMBDATA; Vcc = 3V to 5.5V
ALERT
, SMBDATA forced to 0.4V
ALERT
forced to 5.5V
Logic Input Current
SMBus Input Capacitance
SMBus Clock Frequency
SMBCLK Clock Low Time
SMBCLK Clock High Time
SMBus Start-Condition Setup Time
Logic inputs forced to Vcc or GND
SMBCLK, SMBDATA
(Note 4)
t
LOW
, 10% to 10% points
t
HIGH
, 90% to 90% points
SMBus Repeated Start-Condition Setup Time t
SU : STA ,
90% to 90% points
SMBus Start-Condition Hold Time
t
HD: STA ,
10% of SMBDATA to 90% of SMBCLK
SMBus Start-Condition Setup Time
SMBus Data Valid to SMBCLK Rising-Edge
Time
SMBus Data-Hold Time
SMBCLK Falling Edge to SMBus Data-Valid
Time
t
SD: STO ,
90% of SMBDATA to 10% of SMBDATA
t
SU: DAT ,
10% or 90% of SMBDATA to 10% of
SMBCLK
t
HD : DAT
(Note 5)
Master clocking in data
Electrical Characteristics
(Vcc = + 3.3V, T
A
= -5.5 to + 125°C, unless otherwise noted.) (Note 6)
PARAMETER
CONDITIONS
ADC and power supply
Temperature Resolution (Note 1)
Initial Temperature Error, Local
Diode (Note 2)
Temperature Error, Remote Diode
(Notds2 and 3)
Supply-Voltage Range
Conversion Time
Conversion Rate Timing Error
SMBus Interface
Logic Input High Voltage
Logic Input Low Voltage
Logic Output Low Sink Current
ALERT
Output High Leakage Current
MIN TYP MAX UNITS
8
-2
-3
-3
-5
3.0
94
-25
2.2
2.4
---
6
---
-2
---
---
---
---
---
---
125
---
---
---
---
---
---
---
---
2
3
3
5
5.5
156
25
---
---
0.8
---
1
2
Bits
°C
°C
V
ms
%
Monotonicity guaranteed
T
A
= +60°C to +100°C
T
A
= -55°C to +125°C
T
R
= +60°C to +100°C
T
R
= -55°C to +125°C
From stop bit to conversion complete (both channels)
Auto-convert mode
Vcc = 3V
Vcc = 5.5V
STBY, SMBCLK, SMBDATA; Vcc = 3V to 5.5V
ALERT, SMBDATA forced to 0.4V
ALERT forced to 5.5V
Logic inputs forced to Vcc or GND
STBY, SMBCLK, SMBDATA
V
V
mA
µA
µA
Logic Input Current
Note1:
Guaranteed but not 100% tested.
Note2:
Quantization error is not included in specifications for temperature accuracy. For example, if the G767 de-
vice temperature is exactly +66.7°C, or +68°C (due to the quantization error plus the +1/2°C offset used
for rounding up) and still be within the guaranteed ±1°C error limits for the +60°C to 100°C temperature
range. See Table2.
Note3:
A remote diode is any diode-connected transistor from Table1. T
R
is the junction temperature of the re-
mote of the remote diode. See Remote Diode Selection for remote diode forward voltage requirements.
Note4:
The SMBus logic block is a static design that works with clock frequencies down to DC. While slow operation is
possible, it violates the 10kHz minimum clock frequency and SMBus specifications, and may monopolize the bus.
Note5:
Note that a transition must internally provide at least a hold time in order to bridge the undefined region
(300ns max) of SMBCLK’s falling edge.
Note6:
Specifications from -55°C to +125°C are guaranteed by design, not production tested.
Ver: 2.5
Dec 14, 2004
TEL: 886-3-5788833
http://www.gmt.com.tw
3
GMT [ GLOBAL MIXED-MODE TECHNOLOGY INC ]
