AD7760 Analog Devices, AD7760 Datasheet - Page 15
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AD7760
Manufacturer Part Number
AD7760
Description
2.5 MSPS, 24-Bit, 100 dB Sigma-Delta ADC with On-Chip Buffer
Manufacturer
Analog Devices
Datasheet
1.AD7760.pdf
(36 pages)
Specifications of AD7760
Resolution (bits)
24bit
# Chan
1
Sample Rate
40MSPS
Interface
Par
Analog Input Type
Diff-Uni
Ain Range
4 V p-p,6.5 V p-p
Adc Architecture
Sigma-Delta
Pkg Type
QFP
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Figure 24. SNR vs. MCLK Frequency, 8× Decimation, −6 dB, 1 kHz Input Tone
Figure 23. Normal Mode IMD, 1 MHz Center Frequency, 8× Decimation
Figure 25. Normal Mode SNR vs. Decimation Rate, 1 kHz Input Tone
100.5
100.0
–100
–120
–140
–160
99.5
99.0
98.5
98.0
97.5
97.0
96.5
–20
–40
–60
–80
120
115
110
105
100
95
0
995
0
0
TONE A: 999.75kHz
TONE B: 1.00025MHz
THIRD-ORDER
IMD: –89.15dB
997
NORMAL MODE
LOW POWER MODE
10
64
MCLK FREQUENCY (MHz)
DECIMATION RATE
FREQUENCY (kHz)
999
128
20
–60dB
1001
–0.5dB
192
30
1003
–6dB
1005
256
40
Rev. A | Page 15 of 36
Figure 27. THD vs. MCLK Frequency, 8× Decimation, −6 dB, 1 kHz Input Tone
Figure 26. Normal Mode IMD, 1 MHz Center Frequency, 8× Decimation
Figure 28. Low Power SNR vs. Decimation Rate, 1 kHz Input Tone
–100
–120
–140
–160
–105
–107
–109
–111
–113
–115
–117
–20
–40
–60
–80
116
112
108
104
100
96
0
995
0
0
TONE A: 999.75kHz
TONE B: 1.00025MHz
THIRD-ORDER
IMD: –87.67dB
997
NORMAL MODE
LOW POWER MODE
10
64
MCLK FREQUENCY (MHz)
DECIMATION RATE
FREQUENCY (kHz)
999
128
20
–60dB
1001
–0.5dB
192
30
1003
AD7760
–6dB
1005
256
40