MAX6680MEE+ Maxim Integrated Products, MAX6680MEE+ Datasheet - Page 5

• Manufacturer Part Number: MAX6680MEE+
• Description: IC TEMP SENSOR SMBUS 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX6680MEE+

• Function: Thermometer, Thermostat
• Topology: ADC, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -55°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: Yes
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Full Temp Accuracy: +/- 5 C, +/- 3 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 10 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

MAX6680
2, 5
10
11
12
13
14
15
16
1
3
4
6
7
8
9
PIN
±1°C Fail-Safe Remote/Local Temperature
MAX6681
_______________________________________________________________________________________
1, 5
10
11
12
13
14
15
16
2
3
4
6
7
8
9
SENS_SEL
SMBDATA
SMBCLK
INT_SEL
OVERT
CRIT1,
RESET
ALERT
NAME
CRIT0
ADD1
ADD0
STBY
GND
DXN
DXP
V
CC
Sensors with SMBus Interface
Supply Voltage Input, 3V to 5.5V. Bypass V
A 200Ω series resistor is recommended, but not required for additional noise
filtering. See the Typical Operating Circuit.
Hardware-Programmable Default Alarm Threshold for OVERT Limits. Use Table
4 to set default temperatures.
Combined Remote-Diode Current Source and A/D Positive Input for Remote-
Diode Channel. DO NOT LEAVE DXP FLOATING; connect DXP to DXN if no
remote diode is used. Place a 2200pF capacitor between DXP and DXN for
noise filtering.
Combined Remote-Diode Current Sink and A/D Negative Input. DXN is
internally biased to one diode drop above ground.
SMBus Address Select Pin (Table 9). ADD0 and ADD1 are sampled upon
power-up. Excess capacitance (>50pF) at the address pins when floating may
cause address-recognition problems.
Reset Input. Drive RESET high to set all registers to their default values (POR
state). Drive RESET low or leave floating for normal operation.
Ground
Overtemperature Active-Low Output. Open drain.
SMBus Slave Address Select Pin (see ADD1).
SMBus Alert (Interrupt) Active-Low Output. Open drain.
SMBus Serial-Data Input/Output, Open Drain
Input. Connect high or leave floating to conform to the standard SMBus ALERT
protocol. See the ALERT Interrupts section. Connect to GND to invoke
comparator mode, where ALERT is asserted whenever any of the temperature
conditions is violated by the remote sensor. In this mode, ALERT can only be
deasserted by the condition returning within the temperature limits by enabling
the mask bit in the Configuration register.
SMBus Serial-Clock Input
Input. Hardware Standby. Connect to ground to place in device in standby.
Supply current drops below 10µA and all registers’ data are maintained.
Input. Selects which temperature sensor (local, remote, or both) activates
OVERT.
High = Remote, Low = Local, Open = Local and Remote
FUNCTION
CC
to GND with a 0.1µF capacitor.
Pin Description
5