AD7262 Analog Devices, AD7262 Datasheet - Page 26

• Manufacturer Part Number: AD7262
• Description: 1 MSPS, 12-Bit, Simultaneous Sampling SAR ADC with PGA and Four Comparators
• Manufacturer: Analog Devices

Specifications of AD7262

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 1MSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (2Vref) p-p,5V p-p
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7262
D
D
SCLK
OUT
OUT
CS
A
B
SCLK
D
OUT
D
D
CS
SCLK
OUT
OUT
A
CS
A
B
1
t
THREE-STATE
2
1
Figure 35. Serial Interface Timing Diagram When Reading Data on the Falling SCLK Edge with a Slow SCLK Frequency
1
2
t
Figure 33. Serial Interface Timing Diagram When Reading Data on the 20
2
THREE-STATE
THREE-STATE
2
2
3
THREE-STATE
THREE-STATE
FIRST DATA BIT CLOCKED
3
FIRST DATA BIT CLOCKED OUT
18
4
ON THE 19
OUT ON THIS EDGE
Figure 34. Reading Data from Both ADCs on One D
4
5
19
DB13
TH
A
FALLING EDGE
5
18
20
t
3
DB12
18
A
19
21
DB11
DB11
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FIRST DATA BIT READ
ON THIS EDGE
19
A
B
20
t
7
t
4
DB10
DB10
29
t
4
DB1
DB11
DB11
A
B
20
FIRST DATA BIT READ
ON 20
A
21
DB9
DB9
t
A
B
6
30
TH
A
B
DB0
DB10
DB10
RISING EDGE
21
A
A
B
t
5
OUT
31
DB9
DB9
DB13
th
22
Line with 45 SCLKs
Rising SCLK Edge with a 40 MHz SCLK
A
B
B
DB12
t
5
29
DB1
DB1
B
A
B
29
30
DB0
DB0
DB1
DB1
43
30
31
t
9
A
B
DB1
A
B
B
31
44
THREE-
THREE-
STATE
STATE
t
DB0
DB0
QUIET
t
DB0
8
A
B
B
45
t
8
t
10
THREE-
STATE
THREE-
STATE
THREE-
STATE