ADC-207MC Murata Power Solutions Inc, ADC-207MC Datasheet - Page 5

• Manufacturer Part Number: ADC-207MC
• Description: Analog To Digital Converter
• Manufacturer: Murata Power Solutions Inc

DATEL
FFT TEST
This test actually produces an amplitude versus frequency graph (Figure 7) which indicates harmonic distortion and signal-to-noise ratio. The theoretical rms
signal-to-noise ration for a 7-bit converter is +43.8dB.
®
OUTPUT
CODES
120
110
100
90
80
70
60
50
40
30
20
10
0
0
0.2
Figure 5. Beat Frequency Test at 20MHz
0.4
–10
–10
70
65
60
55
50
45
40
35
30
25
20
15
10
–5
70
65
60
55
50
45
40
35
30
25
20
15
10
–5
5
0
0
0.6
0
0
SAMPLE PULSE = 25ns
NUMBER OF SAMPLES(X10 )
0.8
SAMPLE PULSE WIDTH
1
1
1
®
1.2
• 11 Cabot Boulevard, Mansfi eld, MA 02048-1151 USA • Tel: [phone] • www.datel.com • e-mail: [e-mail]
2
2
3
1.4
1.6
25ns
3
3
1.8
Figure 7. FFT Test Using the ADC-207
2
4
4
FREQUENCY (MHz)
69.2
69.2
5
5
OUTPUT
CODES
6
120
110
100
6
90
80
70
60
50
40
30
20
10
0
0
7-Bit, 20MHz, CMOS Flash A/D Converters
0.1
0.2
7
7
Figure 6. 10MHz Envelope Test
0.3
4MHz FUNDAMENTAL
0.4
4MHz FUNDAMENTAL
8
8
0.5
NUMBER OF SAMPLES(X10 )
27.3
27.3
0.6
0.7
9
9
0.8
0.9
MDA_ADC-207.B03 Page 5 of 6
3
10
1
10
ADC-207
1.1
1.2
1.3
1.4
1.5