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AD7763 Datasheet(PDF) 22 Page - Analog Devices

Part # AD7763
Description  24-Bit, 625 kSPS, 109 dB 誇-? ADC with On-Chip Buffers, Serial Interface
PDF  32 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD7763 Datasheet(HTML) 22 Page - Analog Devices

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AD7763
Rev. 0 | Page 22 of 32
DECOUPLING AND LAYOUT RECOMMENDATIONS
Due to the high performance nature of the AD7763, correct decoupling and layout techniques are required to obtain the performance as
stated within this data sheet. Figure 35 shows a simplified connection diagram for the AD7763.
INA+
INA–
OUTA–
OUTA+
VIN+
VIN–
VREF
R19
160k
Ω
C64
33pF
C7
100nF
AVDD3
PIN 24
(VDIF1)
C54
100nF
L6
DVDD
PIN 41
(DVDD)
C58
100nF
L8
AVDD2
PIN 4
(RHS)
C48
100nF
L1
PIN 15
(VBIAS)
C50
100nF
L3
PIN 14
(LHS)
PIN 27
C62
100nF
L2
L9
AVDD4
PIN 12
(VBUF)
C59
10nF
L4
R38
10
Ω
AVDD1
PIN 5
(VMOD1)
C52
100nF
L5
PIN 33
(VMOD2)
C53
100nF
L11
VDRIVE
PIN 44
(VDRV1)
C56
100nF
L7
PIN 63
(VDRV2)
C57
100nF
L12
VINA+
VINA–
VOUTA–
VOUTA+
DECAPA
DECAPB
VIN+
VIN–
VREF+
REFGND
RBIAS
DGND
DGND
DGND
DGND
DGND
DGND
DGND
19
20
21
22
8
30
25
26
10
9
17
1
35
42
43
57
59
62
I2S
SCR
SCO
SDO
SDI
SDL
SCP
SH1
SH2
RESET
SYNC
DRDY
MCLK
MCLKGND
AD7763BSV
DGND
53
61
60
58
55
54
50
49
46
45
40
37
36
38
3
2
56
52
51
48
47
39
U2
FSI
FSO
SH0
CDIV
64
DGND
ADR1
ADR2
ADR0
RESET
SYNC
DRDY
MCLK
I2S
SCR
SCO
SDO
SDI
SDL
SCP
SH1
SH2
FSI
FSO
CDIV
SH0
ADR1
ADR2
ADR0
Figure 35. Simplified Connection Diagram



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