Datasheet

Data Sheet ADuCM360/ADuCM361
Rev. B | Page 21 of 24
TYPICAL PERFORMANCE CHARACTERISTICS
60
50
40
30
20
INPUT CURRENT (nA)
10
0
–10
0.5 1.0 1.5
COMMON-MODE VOLTAGE (V)
2.0 2.5 3.0 3.50
–20
–30
09743-008
I
P
I
P
– I
N
I
N
Figure 9. Input Current vs. Common-Mode Voltage (V
CM
),
Gain = 4, ADC Input = 250 mV, AVDD = 3.6 V, T
A
= 25°C,
V
CM
= ((AIN+) + (AIN−))/2
5
4
3
2
1
0
INPUT CURRENT (nA)
–1
–2
–3
0.5
1.0 1.5
COMMON-MODE VOLTAGE (V)
2.0 2.5 3.0 3.50
–4
–5
09743-009
I
P
I
P
– I
N
I
N
Figure 10. Input Current vs. Common-Mode Voltage (V
CM
),
Gain = 128, ADC Input = 7.8125 mV, AVDD = 3.6 V, T
A
= 25°C,
V
CM
= ((AIN+) + (AIN−))/2
–40 –20 0 20
14000000
12000000
10000000
8000000
6000000
4000000
2000000
40
TEMPERA
TURE (°C)
ADC CODES
60 80 100
120
09743-010
Figure 11. ADC Codes (Decimal Values) vs. Die Temperature
0
50
100
150
200
250
0 200 400 600 800 1000 1200
SETTLING TIME (ms)
CAPACITANCE (nF)
BOOST = 0
BOOST = 30
09743-011
Figure 12. VBIAS Output Settling Time vs. Load Capacitance,
T
A
= 25°C, IOVDD and AVDD = 3.3 V
0
5
10
15
20
25
30
0 0.5
1.0
1.5
2.0
2.5
3.0
3.5
PULL-UP RESISTANCE (kΩ)
VOLTAGE (V)
09743-012
Figure 13. Digital Input Pin Pull-Up Resistance Value vs. Voltage Applied
to Digital Pin, T
A
= 25°C, IOVDD = 3.4 V
0
10
20
30
40
50
60
0 0.5 1.0
1.5 2.0
PULL-UP RESISTANCE (kΩ)
VOLTAGE (V)
09743-013
Figure 14. Digital Input Pin Pull-Up Resistance Value vs. Voltage Applied
to Digital Pin, T
A
= 25°C, IOVDD = 1.8 V