Datasheet

MCP9804
DS22203C-page 8 © 2009-2012 Microchip Technology Inc.
Note: Unless otherwise indicated, V
DD
= 2.7V to 5.5V, GND = Ground, SDA/SCL pulled-up to V
DD
and
T
A
= -40°C to +125°C.
FIGURE 2-7: Supply Current vs.
Temperature.
FIGURE 2-8: Shutdown Current vs.
Temperature.
FIGURE 2-9: Power-on Reset Threshold
Voltage vs. Temperature.
FIGURE 2-10: Temperature Accuracy vs.
Supply Voltage.
FIGURE 2-11: Power Supply Rejection vs.
Frequency.
FIGURE 2-12: Temperature Conversion
Time vs. Temperature.
100
150
200
250
300
350
400
-40-20 0 20406080100120
Temperature (°C)
I
DD
(µA)
0.00
0.50
1.00
1.50
2.00
-40 -20 0 20 40 60 80 100 120
Temperature (°C )
I
SHDN
(µA)
1
1.5
2
2.5
3
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
V
POR
(V)
-1.00
-0.50
0.00
0.50
1.00
-40 -20 0 20 40 60 80 100 120
Temperature (°C)
Temperature Accuracy (°C)
∆°C/∆V
DD
= 0.1°C/V
V
DD
= 2.7V
V
DD
= 3.3V
V
DD
= 5.5V
-1.0
-0.5
0.0
0.5
1.0
100 1,000 10,000 100,000 1,000, 000
Frequency (Hz)
Normalized Temp. Error (°C)
∆°C/∆V
DD
, V
DD
= 3.3V + 150 mV
PP (AC)
T
A
= 25°C
1k 10k 100k 1M100k 1M10k 100k 1M1k 10k 100k 1M
100 1k 10k 100k 1M
T
A
= +25°C
No decoupling capacitor
10
100
1000
-40-20 0 20406080100120
Temperature (°C)
t
CONV
(ms)
0.0625°C
0.125°C
0.25°C
0.5°C