Datasheet

AD7760
Rev. A | Page 14 of 36
0
–200
0 1250
04975-018
FREQUENCY (kHz)
AMPLITUDE (dB)
–25
–50
–75
–100
–125
–150
–175
250 500 750 1000
Figure 17. Normal Mode FFT, 1 MHz, −6 dB Input Tone, 8× Decimation
0
–200
0 1250
04975-019
FREQUENCY (kHz)
AMPLITUDE (dB)
–25
–50
–75
–100
–125
–150
–175
250 500 750 1000
TONE A: 999.75kHz
TONE B: 1.00025MHz
Figure 18. Normal Mode IMD, 1 MHz Center Frequency, 8× Decimation
0
–160
0 10000
04975-020
FREQUENCY (kHz)
AMPLITUDE (dB)
–20
–40
–60
–80
–100
–120
–140
2000 4000 6000 8000
TONE A: 999.75kHz
TONE B: 1.00025MHz
SECOND-ORDER IMD: –105.6dB
Figure 19. Normal Mode IMD, 1 MHz Center Frequency, 8× Decimation
0
–200
0 1250
04975-021
FREQUENCY (kHz)
AMPLITUDE (dB)
–25
–50
–75
–100
–125
–150
–175
250 500 750 1000
Figure 20. Low Power FFT, 1 MHz, −6 dB Input Tone, 8× Decimation
0
–200
0 1250
04975-022
FREQUENCY (kHz)
AMPLITUDE (dB)
–25
–50
–75
–100
–125
–150
–175
250 500 750 1000
TONE A: 999.75kHz
TONE B: 1.00025MHz
Figure 21. Low Power IMD, 1 MHz Center Frequency, 8× Decimation
0
–160
0 10000
04975-023
FREQUENCY (kHz)
AMPLITUDE (dB)
–20
–40
–60
–80
–100
–120
–140
2000 4000 6000 8000
TONE A: 999.75kHz
TONE B: 1.00025MHz
SECOND-ORDER IMD: –115.7dB
Figure 22. Low Power IMD, 1 MHz Center Frequency, 8× Decimation