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MAX6627 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX6627
Description  Remote ±1°C Accurate Digital Temperature Sensors with SPI-Compatible Serial Interface
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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Remote ±1°C Accurate Digital Temperature
Sensors with SPI-Compatible Serial Interface
4
_______________________________________________________________________________________
0
50
100
150
200
250
300
3.0
4.0
3.5
4.5
5.0
5.5
AVERAGE OPERATING CURRENT
vs. SUPPLY VOLTAGE
SUPPLY VOLTAGE (V)
MAX6627
MAX6628
-3
-2
-1
0
1
2
3
-55
-5
-30
20
45
70
95
120 145
TEMPERATURE ERROR vs. TEMPERATURE
TEMPERATURE (
°C)
TA = +25
°C
TA = 0
°C
MAX6627
TA = +70
°C
0.6
1.0
0.8
1.4
1.2
1.8
1.6
2.0
2.4
2.2
2.6
-55
-5
20
45
-30
70
95
120 145
POWER-ON-RESET THRESHOLD
vs. TEMPERATURE
TEMPERATURE (
°C)
Typical Operating Characteristics
(VCC = +3.3V, TA = +25°C, unless otherwise noted.)
PIN
NAME
FUNCTION
1
GND
Ground
2
DXN
Combined Current Sink and ADC Negative Input for Remote Diode. DXN is normally biased to a diode
voltage above ground.
3
DXP
Combined Current Source and ADC Positive Input for Remote Diode
4VCC
Supply Voltage Input. Bypass with a 0.1µF to GND.
5
SCK
SPI Clock Input
6
CS
Chip Select Input. Pulling
CS low initiates an idle state, but the SPI interface is still enabled. A rising edge
of
CS initiates the next conversion.
7
SO
SPI Data Output
8
N.C.
No Connect. Can be connected to GND for improved thermal conductivity.
Pin Description
10
100k
10M
1k
100
10k
1M
100M
TEMPERATURE ERROR vs.
POWER-SUPPLY NOISE FREQUENCY
FREQUENCY (Hz)
0
4
2
6
8
10
12
VIN = SQUARE WAVE
APPLIED TO VCC WITH NO
0.1
µF CAPACITOR
VIN = 250mVp-p
0
25
50
75
100
125
-2
2
0
4
6
8
10
12
14
RESPONSE TO THERMAL SHOCK
TIME (s)
0
1
3
2
4
5
CAPACITANCE (pF)
0
10,000
5000
15,000
20,000
TEMPERATURE ERROR
vs. DXP/DXN CAPACITANCE




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