AD7765 Analog Devices, AD7765 Datasheet - Page 13

• 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

–0.00075
–0.00150
–0.00225
–0.00300
Figure 19. Normal Power Mode; IMD, f
0.00300
0.00225
0.00150
0.00075
–100
–120
–140
–160
–180
–0.5
–1.0
–1.5
–2.0
–20
–40
–60
–80
2.0
1.5
1.0
0.5
0
0
6k
0
6k
0
50 kHz Center Frequency, 128× Decimation Rate
10k
10k
15k
15k
Figure 18. Normal Power Mode INL
20k
20k
20k
Figure 20. DNL Plot
25k
16-BIT CODE SCALING
25k
FREQUENCY (Hz)
30k
30k
CODE
40k
35k
35k
IN
A = 49.7 kHz, f
40k
40k
45k
45k
60k
–40°C
+25°C
+85°C
50k
50k
IN
B = 50.3 kHz,
55k 59,535
55k 59,535
78,124
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–0.000120
0.003225
0.003000
0.002250
0.001500
0.000075
Figure 22. Normal and Low Power Mode; SNR vs. Decimation Rate,
110
109
108
107
106
105
104
103
102
0
0
6k
10k
15k
Figure 21. Low Power Mode INL
64
1 kHz, −0.5 dB Input Tone
20k
16-BIT CODE SCALING
25k
DECIMATION RATE
30k
128
LOW SNR
35k
+85°C
40k
45k
192
NORMAL SNR
–40°C
+25°C
50k
55k 59,535
AD7765
256