Datasheet

MAX6694
5-Channel Precision Temperature Monitor
with Beta Compensation
_______________________________________________________________________________________ 3
ELECTRICAL CHARACTERISTICS (continued)
(V
CC
= +3.0V to +3.6V, V
STBY
= V
CC
, T
A
= -40°C to +125°C, unless otherwise noted. Typical values are at V
CC
= +3.3V and T
A
=
+25°C.) (Note 2)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
High level, channel 1 500
Low level, channel 1 20
High level, channels 2, 3, 4 80 100 120
Remote-Diode Source Current I
RJ
Low level, channels 2, 3, 4 8 10 12
µA
Undervoltage-Lockout Threshold UVLO Falling edge of V
CC
disables ADC 2.30 2.80 2.95 V
Undervoltage-Lockout Hysteresis 90 mV
Power-On-Reset (POR) Threshold V
CC
falling edge 1.2 2.0 2.25 V
POR Threshold Hysteresis 90 mV
ALERT, OVERT
I
SINK
= 1mA 0.3
Output Low Voltage V
OL
I
SINK
= 6mA 0.5
V
Output Leakage Current 1µA
SMBus INTERFACE (SMBCLK, SMBDATA), STBY
Logic Input Low Voltage V
IL
0.8 V
Logic Input High Voltage V
IH
V
CC
= 3.0V 2.2 V
Input Leakage Current -1 +1 µA
Output Low Voltage V
OL
I
SINK
= 6mA 0.3 V
Input Capacitance C
IN
5pF
SMBus-COMPATIBLE TIMING (Figures 3 and 4) (Note 4)
Serial-Clock Frequency f
SMBCLK
(Note 5) 400 kHz
f
SMBCLK
= 100kHz 4.7
Bus Free Time Between STOP
and START Condition
t
BUF
f
SMBCLK
= 400kHz 1.6
µs
f
SMBCLK
= 100kHz 4.7
START Condition Setup Time
f
SMBCLK
= 400kHz 0.6
µs
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 100kHz
0.6
Repeat START Condition Setup
Time
t
SU:STA
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 400kHz
0.6
µs
START Condition Hold Time t
HD:STA
10% of SMBDATA to 90% of SMBCLK 0.6 µs
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 100kHz
4
STOP Condition Setup Time t
SU:STO
90% of SMBCLK to 90% of SMBDATA,
f
SMBCLK
= 400kHz
0.6
µs
10% to 10%, f
SMBCLK
= 100kHz 1.3
Clock Low Period t
LOW
10% to 10%, f
SMBCLK
= 400kHz 1.3
µs
Clock High Period t
HIGH
90% to 90% 0.6 µs
f
SMBCLK
= 100kHz 300
Data Hold Time t
HD:DAT
f
SMBCLK
= 400kHz (Note 6) 900
ns