MAX6652AUB Maxim Integrated Products, MAX6652AUB Datasheet - Page 6

• Manufacturer Part Number: MAX6652AUB
• Description: Board Mount Temperature Sensors
• Manufacturer: Maxim Integrated Products

Specifications of MAX6652AUB

• Full Temp Accuracy: +/- 2 C
• Package / Case: uSOP
• Digital Output - Bus Interface: Serial (2-Wire)
• Digital Output - Number Of Bits: 7 bit + Sign
• Maximum Operating Temperature: + 125 C
• Minimum Operating Temperature: - 40 C
• Output Type: Digital
• Lead Free Status / Rohs Status: Lead free / RoHS Compliant

Writing a 1 to bit 0 of the configuration register starts
the monitoring function. The device will perform a
sequential sampling of all the inputs, starting with the
internal temperature sensor and continuing with 2.5V
12V
conversion, the sequential sampling will not stop until
the sampling cycle is completed and the results are
stored. When it starts again, it will always start with the
temperature measurement.
An interrupt signal is generated when a temperature
measurement goes above the hot limit or when a volt-
age measurement is either above the high limit or
below the low limit. This will cause the open-drain out-
put (ALERT) to go to the active-low state and set each
Temperature Sensor and System Monitor
in a 10-Pin µMAX
Table 2. Temperature Data Format
Table 3. Voltage Data Format
6
TEMPERATURE
_______________________________________________________________________________________
IN
128 (1/2 scale)
192 (3/4 scale)
ADC OUTPUT
64 (1/4 scale)
LSB weight
, 3.3V
+125
(°C)
+25
-25
-40
+1
CODE
-1
0
253
254
255
—
—
—
—
0
1
2
IN
, and V
CC
0111 1101
0001 1001
0000 0001
0000 0000
1111 1111
1110 0111
1101 1000
(BINARY)
OUTPUT
DIGITAL
INPUT VOLTAGE AT
. If the master terminates the
12.000V - 12.063V
15.813V - 15.875V
15.875V - 15.938V
62mV (12V/192)
125mV - 187mV
4.000V - 4.063V
8.000V - 8.063V
62mV - 125mV
> 15.938
< 62mV
12V
—
—
—
—
IN
OUTPUT
DIGITAL
(HEX)
7D
D8
E7
19
01
00
FF
INPUT VOLTAGE AT
13mV (2.5V/192)
833mV - 846mV
1.667V - 1.680V
2.500V - 2.513V
3.294V - 3.307V
3.572V - 3.586V
13mV - 26mV
26mV - 39mV
IN
< 13mV
> 3.586
2.5V
,
—
—
—
—
IN
corresponding interrupt status bit (bits 0 through 4) to 1
(Table 5). The interrupt will be cleared by reading the
interrupt status register, except for temperature inter-
rupts generated in comparator mode. Reading the
interrupt status register also clears the register itself,
except for temperature interrupt bits set in comparator
mode.
Unless the fault is removed, the ALERT output will only
remain cleared until the end of the next conversion
cycle where it will again be asserted. The ALERT output
can also be masked by writing to the appropriate bits in
the interrupt mask register (Table 6) or by setting bit 1
of the configuration register (Table 4) to 0.
The ADC integrates over a 66ms period, an integral
multiple of the line period with excellent noise rejection.
The internal oscillator is trimmed to produce a 66ms
conversion time for temperature and 33ms for each
voltage. This is equivalent to 4 and 2 cycles of 60Hz,
respectively, and provides protection against noise
pickup from the main supply. The internal oscillation
frequency can be changed to provide the same protec-
tion against 50Hz by setting bit 7 in the configuration
register to 1 (Table 4). The multiplexer automatically
sequences through the inputs, measuring voltages, and
temperature.
INPUT VOLTAGE AT
17.2mV (3.3V/192)
17.2mV - 34.4mV
34.4mV - 51.6mV
1.100V - 1.117V
2.200V - 2.217V
3.300V - 3.317V
4.348V - 4.366V
4.366V - 4.383V
< 17.2mV
> 4.383
3.3V
—
—
—
—
IN
ADC and Multiplexer
26mV (5.0V/192)
3.330V - 3.560V
5.000V - 5.026V
6.566V - 6.615V
6.615V - 6.640V
> 6.640
V
—
—
—
—
—
—
—
—
CC