MAX1668MEE Maxim Integrated Products, MAX1668MEE Datasheet - Page 4

• Manufacturer Part Number: MAX1668MEE
• Description: IC TEMP SENSOR MUTI-CHAN 16-QSOP
• Manufacturer: Maxim Integrated Products

Specifications of MAX1668MEE

• Function: Thermometer, Thermostat
• Topology: ADC, Comparator, Multiplexer, Register Bank
• Sensor Type: External & Internal
• Sensing Temperature: -55°C ~ 125°C, External Sensor
• Output Type: I²C™/SMBus™
• Output Alarm: Yes
• Output Fan: No
• Voltage - Supply: 3 V ~ 5.5 V
• Operating Temperature: -55°C ~ 125°C
• Mounting Type: Surface Mount
• Package / Case: 16-QSOP
• Full Temp Accuracy: +/- 3.5 C, +/- 5 C
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 7 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 55 C
• Dc: 0333
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Multichannel Remote/Local
Temperature Sensors
ELECTRICAL CHARACTERISTICS (continued)
(V
(Typical Operating Circuit, V
4
Note 1: Guaranteed by design, but not production tested.
Note 2: Quantization error is not included in specifications for temperature accuracy. For example, if the MAX1668/MAX1805/
Note 3: A remote diode is any diode-connected transistor from Table 1. T
Note 4: The SMBus logic block is a static design that works with clock frequencies down to DC. While slow operation is possible, it
Note 5: Note that a transition must internally provide at least a hold time in order to bridge the undefined region (300ns max) of
Note 6: Specifications from -55°C to +125°C are guaranteed by design, not production tested.
Logic Input High Voltage
Logic Input Low Voltage
Logic Output Low Sink Current
ALERT Output High Leakage
Current
Logic Input Current
SMBus INTERFACE
CC
-10
-20
20
10
_______________________________________________________________________________________
0
= +5V, STBY = V
1
Remote-Diode Selection section for remote-diode forward-voltage requirements.
violates the 10kHz minimum clock frequency and SMBus specifications, and can monopolize the bus.
SMBCLK’s falling edge t
MAX1989 device temperature is exactly +66.7°C, the ADC may report +66°C, +67°C, or +68°C (due to the quantization
error plus the +0.5°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 Table 2.
PARAMETER
vs. PC BOARD RESISTANCE
TEMPERATURE ERROR
LEAKAGE RESISTANCE (MΩ)
CC
PATH = DXP_ TO V
10
PATH = DXP_ TO GND
, configuration byte = X0XXXX00, T
CC
= +5V, STBY = V
HD:DAT.
CC
(5V)
STBY, SMBCLK, SMBDATA; V
STBY, SMBCLK, SMBDATA; V
ALERT, SMBDATA forced to 0.4V
ALERT forced to 5.5V
Logic inputs forced to V
100
CC
-1
-2
4
3
2
1
0
, configuration byte = X0XXXX00, T
-50
-30
NPN (CMPT3904)
INTERNAL
-10
CONDITIONS
TEMPERATURE ERROR
A
vs. TEMPERATURE
= -55°C to +125°C, unless otherwise noted.) (Note 6)
TEMPERATURE (°C)
CC
PNP (CMPT3906)
10
or GND
30
CC
CC
Typical Operating Characteristics
50
= 4.5V to 5.5V
= 4.5V to 5.5V
R
70
is the junction temperature of the remote diode. See the
90
110
A
= +25°C, unless otherwise noted.)
24
20
16
12
8
4
0
0.1
MIN
2.4
WITH V
2200pF BETWEEN DXN_ AND DXP_
-2
6
vs. SUPPLY NOISE FREQUENCY
CC
TEMPERATURE ERROR
0.1µF CAPACITOR REMOVED
TYP
FREQUENCY (MHz)
1
250mV
MAX
0.8
+2
1
10
P-P
100mV
UNITS
mA
µA
µA
P-P
V
V
100