MAX6694TE9A+T Maxim Integrated Products, MAX6694TE9A+T Datasheet - Page 7

• Manufacturer Part Number: MAX6694TE9A+T
• Description: IC TEMP MONITOR 5CH 16TQFN
• Manufacturer: Maxim Integrated Products

Specifications of MAX6694TE9A+T

• Function: Temp Monitoring System (Sensor)
• Topology: ADC, Buffer, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -40°C ~ 125°C, External Sensor
• Output Type: SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 3.6 V
• Operating Temperature: -40°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-TQFN Exposed Pad
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

The MAX6694 is a precision multichannel temperature
monitor that features one local and four remote temper-
ature-sensing channels with a programmable alert
threshold for each temperature channel and a program-
mable overtemperature threshold for channels 1 and 4
(see Figure 1). Communication with the MAX6694 is
achieved through the SMBus serial interface and a
dedicated alert output. The alarm outputs, OVERT and
ALERT, assert if the software-programmed temperature
thresholds are exceeded. ALERT typically serves as an
interrupt, while OVERT can be connected to a fan, sys-
tem shutdown, or other thermal-management circuitry.
Figure 1. Internal Block Diagram
5-Channel Precision Temperature Monitor
DXP1
DXN1
DXP2
DXN2
DXP3
DXN3
DXP4
DXN4
_______________________________________________________________________________________
Detailed Description
SOURCES,
COMPEN-
CURRENT
AND MUX
SATION
BETA
BUFFER
INPUT
V
CC
REF
SMBCLK
with Beta Compensation
INTERFACE
In the default conversion mode, the MAX6694 starts the
conversion sequence by measuring the temperature on
channel 1, followed by 2, 3, local channel, and 4. The
conversion result for each active channel is stored in
the corresponding temperature data register.
Enter software standby mode by setting the STOP bit to
1 in the configuration 1 register. Enter hardware stand-
by by pulling STBY low. Software standby mode dis-
ables the ADC and reduces the supply current to
approximately 3µA. Hardware standby mode halts the
ADC clock, but the supply current is approximately
SMBus
ADC
SMBDATA
ADC Conversion Sequence
Low-Power Standby Mode
ALERT RESPONSE ADDRESS
REMOTE TEMPERATURES
LOCAL TEMPERATURES
OVERT THRESHOLD
ALERT THRESHOLD
COMMAND BYTE
MAX6694
REGISTER BANK
ALARM
ALU
OVERT
ALERT
STBY
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