AMC1203_15 Datasheet, PDF (9/29 Pages) Texas Instruments – 1-Bit, 10MHz, 2nd-Order, Isolated Delta-Sigma Modulator

AMC1203
www.ti.com
SBAS427C – FEBRUARY 2008 – REVISED JUNE 2011
TYPICAL CHARACTERISTICS
At V_DD1 = V_DD2 = 5V, V_IN+ = –280mV to +280mV, V_IN– = 0V, and sinc³ filter with OSR = 256, unless otherwise noted.
INTEGRAL NONLINEARITY
vs INPUT SIGNAL AMPLITUDE
INTEGRAL NONLINEARITY
vs TEMPERATURE
6
3
5
4
2
3
2
1
1
0
-1
-2
-3
-4
-5
-6
-300 -200 -100
0
100
200
300
V_IN (mV)
0
-1
-2
-3
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 3.
Figure 4.
OFFSET ERROR
vs SUPPLY VOLTAGE
0.20
0.15
0.10
0.05
0
-0.05
-0.10
-0.15
-0.20
4.50
4.75
5.00
V_DD1 (V)
5.25
5.50
Figure 5.
0.5
0.4
0.3
0.2
0.1
0
-0.1
-0.2
-0.3
-0.4
-0.5
-40 -25 -10
OFFSET ERROR
vs TEMPERATURE
5 20 35 50 65 80
Temperature (°C)
Figure 6.
95 110 125
GAIN ERROR
vs TEMPERATURE
0
-0.1
-0.2
-0.3
-0.4
-0.5
-0.6
-0.7
-0.8
-0.9
-40 -25 -10 5
20 35 50 65 80 95 110 125
Temperature (°C)
Figure 7.
18
16
14
12
10
8
6
4
2
0
1
EFFECTIVE NUMBER OF BITS
vs OVERSAMPLING RATIO
Sinc³ Filter
Sinc² Filter
Sinc Filter
10
100
1000
10000
OSR
Figure 8.
Copyright © 2008–2011, Texas Instruments Incorporated
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