Ver: 2.5

Dec 14, 2004

TEL: 886-3-5788833

http://www.gmt.com.tw

3

G767

Global Mixed-mode Technology Inc.

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

SMBus Interface

Logic Input High Voltage

STBY

, SMBCLK, SMBDATA; Vcc = 3V to 5.5V

2.2

---

---

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

6

---

---

mA

ALERT

Output High Leakage Current

ALERT

forced to 5.5V

---

---

1

µA

Logic Input Current

Logic inputs forced to Vcc or GND

-1

---

1

µA

SMBus Input Capacitance

SMBCLK, SMBDATA

---

5

---

pF

SMBus Clock Frequency

(Note 4)

DC

---

100

kHz

SMBCLK Clock Low Time

4.7

---

---

µs

SMBCLK Clock High Time

4

---

---

µs

SMBus Start-Condition Setup Time

4.7

---

---

µs

500

---

---

ns

SMBus Start-Condition Hold Time

4

---

---

µs

SMBus Start-Condition Setup Time

4

---

---

µs

SMBus Data Valid to SMBCLK Rising-Edge

Time

SMBCLK

800

---

---

ns

SMBus Data-Hold Time

0

---

---

µs

SMBCLK Falling Edge to SMBus Data-Valid

Time

Master clocking in data

---

---

1

µs

Electrical Characteristics

PARAMETER

CONDITIONS

MIN TYP MAX UNITS

ADC and power supply

Temperature Resolution (Note 1)

Monotonicity guaranteed

8

---

---

Bits

-2

---

2

Initial Temperature Error, Local

Diode (Note 2)

-3

---

3

°C

-3

---

3

Temperature Error, Remote Diode

(Notds2 and 3)

-5

---

5

°C

Supply-Voltage Range

3.0

---

5.5

V

Conversion Time

From stop bit to conversion complete (both channels)

94

125 156

ms

Conversion Rate Timing Error

Auto-convert mode

-25

---

25

%

SMBus Interface

Vcc = 3V

2.2

---

---

Logic Input High Voltage

STBY, SMBCLK, SMBDATA

Vcc = 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

6

---

---

mA

ALERT

Output High Leakage Current

ALERT forced to 5.5V

---

---

1

µA

Logic Input Current

Logic inputs forced to Vcc or GND

-2

---

2

µA

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.

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.