AD7765 Analog Devices, AD7765 Datasheet - Page 7

• 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

TIMING DIAGRAMS
SCO (O)
SDO (O)
SCO (O)
SCO (O)
SDO (O)
FSO (O)
FSO (O)
SDI (I)
SDI (I)
FSI (I)
FSI (I)
t
11
CONTROL REGISTER
D23
t
10
t
ADDR (0x0001)
13
t
RA15
3
t
4
t
5
D22
RA14
t
1
D21
t
1
RA13
t
2
t
2
CONTROL REGISTER
D20
t
6
INSTRUCTION
RA12
D19
RA11
t
t
7
14
Figure 4. AD7765 Status Register Read Cycle
Figure 2. Serial Read Timing Diagram
RA10
Figure 3. AD7765 Register Write
D1
Rev. A | Page 7 of 32
RA9
≥8 ×
t
15
t
SCO
D0
t
32 ×
12
RA8
t
9
NEXT DATA READ FOLLOWING THE WRITE TO CONTROL REGISTER
t
SCO
ST4
ST3
STATUS REGISTER
CONTENTS [31:16]
RA1
ST2
RA0
ST1
D15
ST0
D14
DON’T CARE
BITS [15:0]
0
0
D1
t
8
0
D0
AD7765