AD7764 Analog Devices, AD7764 Datasheet - Page 14

• Manufacturer Part Number: AD7764
• Description: 24-Bit, 312 kSPS, 109 dB Sigma Delta ADC with On-Chip Buffers and Serial Interface
• Manufacturer: Analog Devices

Specifications of AD7764

• 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

AD7764
–0.00075
–0.00150
–0.00225
–0.00300
0.00300
0.00225
0.00150
0.00075
Figure 26. Normal and Low Power Mode, SNR vs. Decimation Rate,
–0.5
–1.0
–1.5
–2.0
2.0
1.5
1.0
0.5
110
109
108
107
106
105
104
103
102
0
6k
0
6k
0
10k
10k
NORMAL SNR
15k
15k
Figure 25. Normal Power Mode INL
20k
64
1 kHz, −0.5 dB Input Tone
20k
Figure 24. DNL Plot
LOW SNR
25k
16-BIT CODE SCALING
25k
DECIMATION RATE
30k
30k
CODE
128
35k
35k
40k
40k
45k
45k
192
–40°C
+25°C
+85°C
50k
50k
55k 59,535
55k 59,535
256
Rev. A | Page 14 of 32
0.003225
0.003000
–0.00012
Figure 27. Normal Power Mode, IMD, f
0.00225
0.00150
0.00075
–100
–120
–140
–160
–180
–20
–40
–60
–80
0
0
0
6k
50 kHz Center Frequency, 128× Decimation Rate
10k
15k
Figure 28. Low Power Mode INL
20k
20k
16-BIT CODE SCALING
25k
FREQUENCY (Hz)
30k
40k
35k
IN
A = 49.7 kHz, f
+85°C
40k
45k
60k
–40°C
+25°C
50k
IN
B = 50.3 kHz,
55k 59,535
78,124