AD7765 Analog Devices, AD7765 Datasheet - Page 12

• Manufacturer Part Number: AD7765
• Description: 24-Bit, 156 kSPS, 112 dB Sigma-Delta ADC with On-Chip Buffers and Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7765

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

AD7765
Figure 13. Normal Power Mode; Current Consumption vs. MCLK Frequency,
Figure 14. Normal Power Mode; Current Consumption vs. MCLK Frequency,
–100
–125
–150
–175
Figure 12. Normal Power Mode; FFT, 1 kHz, −6 dB Input Tone,
–25
–50
–75
40
35
30
25
20
15
10
40
35
30
25
20
15
10
5
0
5
0
0
0
0
0
5
5
10
10k
10
256× Decimation Rate
128× Decimation Rate
256× Decimation Rate
MCLK FREQUENCY (MHz)
MCLK FREQUENCY (MHz)
15
15
FREQUENCY (Hz)
20
20k
20
25
25
AV
30
DD
AV
30k
4
30
DD
AV
35
AV
DV
AV
DV
4
AV
DD
DD
DD
DD
AV
DD
1
DD
1
35
AV
40
2
DD
2
DD
3
3
45
40
Rev. A | Page 12 of 32
Figure 16. Low Power Mode; Current Consumption vs. MCLK Frequency,
Figure 17. Low Power Mode; Current Consumption vs. MCLK Frequency,
–100
–125
–150
–175
–25
–50
–75
25
20
15
10
20
18
16
14
12
10
Figure 15. Low Power Mode; FFT, 1 kHz, −6 dB Input Tone,
5
0
8
6
4
2
0
0
0
0
0
5
5k
5
10
10
10k
256× Decimation Rate
128× Decimation Rate
256× Decimation Rate
MCLK FREQUENCY (MHz)
MCLK FREQUENCY (MHz)
15
15
15k
FREQUENCY (Hz)
20
20
20k
25
25
25k
AV
30
DD
AV
4
30
30k
AV
DD
AV
35
AV
DV
4
DV
AV
DD
DD
DD
DD
2
AV
DD
DD
1
1
35
AV
40
35k
2
DD
DD
3
3
45
40