AD7762 Analog Devices, AD7762 Datasheet - Page 10

• Manufacturer Part Number: AD7762
• Description: Parallel Interface, 625 kSPS, 24-Bit Sigma-Delta A/D Converter
• Manufacturer: Analog Devices

Specifications of AD7762

• Resolution (bits): 24bit
• # Chan: 1
• Sample Rate: 40MSPS
• Interface: Par
• Analog Input Type: Diff-Uni
• Ain Range: (1.6Vref) p-p,4 V p-p,6.5 V p-p
• Adc Architecture: Sigma-Delta
• Pkg Type: QFP

AD7762
TYPICAL PERFORMANCE CHARACTERISTICS
AV
are generated from 65536 samples using a 7-term Blackman-Harris window.
Figure 5. Normal Mode FFT, 1 kHz, −0.5 dB Input Tone, 256× Decimation
Figure 7. Normal Mode FFT, 1 kHz, −60 dB Input Tone, 256× Decimation
Figure 6. Normal Mode FFT, 1 kHz, −6 dB Input Tone, 256× Decimation
DD1
–100
–125
–150
–175
–200
–100
–125
–150
–175
–200
–100
–125
–150
–175
–200
= DV
–25
–50
–75
–25
–50
–75
–25
–50
–75
0
0
0
0
0
0
DD
= V
4000
4000
4000
DRIVE
= 2.5 V, AV
8000
8000
8000
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
12000
12000
12000
DD2
= AV
16000
16000
16000
DD3
= AV
20000
20000
20000
DD4
24000
24000
24000
= 5 V, V
Rev. 0 | Page 10 of 28
REF
= 4.096 V, T
Figure 10. Low Power FFT, 1 kHz, −60 dB Input Tone, 256× Decimation
Figure 8. Low Power FFT, 1 kHz, −0.5 dB Input Tone, 256× Decimation
Figure 9. Low Power FFT, 1 kHz, −6 dB Input Tone, 256× Decimation
A
–100
–125
–150
–175
–200
–100
–125
–150
–175
–200
–100
–125
–150
–175
–200
–25
–50
–75
–25
–50
–75
–25
–50
–75
= 25°C, normal mode, unless otherwise noted. All FFTs
0
0
0
0
0
0
4000
4000
4000
8000
8000
8000
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
12000
12000
12000
16000
16000
16000
20000
20000
20000
24000
24000
24000