ADC-305-3 查看數據表（PDF） - DATEL Data Acquisition products
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ADC-305-3 Datasheet PDF : 6 Pages
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®
®
ADC-305
+5V(A)
47µF
VIN
(RIN = 75Ω)
100
Gain
Adjust
Bias
Adjust
2SC2785
470µF 390
120
51
680
2SC2785
22µF
2.2k
10k
2SC2785
2.2k
–5V(A)
+5V(A)
100µH
0.1µF
0.1µF
0.1µF 13
14
0.1µF
15
0.1µF
16
12
0.1µF
11
10
9
17
8
0.1µF
18
7
75
0.1µF 19 ADC-305 6
20
5
21
4
22
3
23
2
0.1µF 24
1
510
VRB 2SC2785 2k
Adjust
2k
510
510
VRT
Adjust
2SC2785
47µF
–5V(A)
+5V(D) 47µF
0.1µF
1
20
2
19
3
18
4
17
5
16
6 74LS574 15
7
14
8
13
9
12
10
11
BIT 1 (MSB)
BIT 2
BIT 3
BIT 4
BIT 5
BIT 6
BIT 7
BIT 8 (LSB)
0.1µF
1
14
2
13
3
4 74HC04 11
6
9
7
Clock Input
(A/D CLK)
(RIN = 75Ω)
75
Figure 5. Typical Connection Diagram
Supply Current vs. Sampling Rate
mA
20
+DVS=+AVS=+5V
VIN = 1kHz
Ta=25°C
15
10
5 10 15 20 25 30MHz
Sampling Rate
Supply Current vs. Sampling Voltage
mA
20
15
10
5
Differential Linearity Error vs.
Input Signal Frequency
LSB
+DVS=+AVS=+5V
0.6 FS = 20.48MHz
Ta=25°C
0.4
0.2
4.0 4.5 5.0 5.5V
Supply Voltage
2
4
6
8 10MHz
Input Signal Frequency
Figure 6. Typical Performance Curves
SNR + THD vs. Input Signal Frequency
dB
46
42
38
+DVS=+AVS=+5V
FS = 20.48MHz
Ta=25°C
36
1 2 3 4 5 6 7MHz
Input Signal Frequency
5
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