AD7951 Analog Devices, AD7951 Datasheet - Page 5

• Manufacturer Part Number: AD7951
• Manufacturer: Analog Devices

Specifications of AD7951

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

TIMING SPECIFICATIONS
AVDD = DVDD = 5 V; OVDD = 2.7 V to 5.5 V; VCC = 15 V; VEE = −15 V; V
Table 3.
Parameter
CONVERSION AND RESET (See Figure 33 and Figure 34)
PARALLEL INTERFACE MODES (See Figure 35 and Figure 37)
MASTER SERIAL INTERFACE MODES
Convert Pulse Width
Time Between Conversions
CNVST Low to BUSY High Delay
BUSY High All Modes (Except Master Serial Read After Convert)
Aperture Delay
End of Conversion to BUSY Low Delay
Conversion Time
Acquisition Time
RESET Pulse Width
CNVST Low to DATA Valid Delay
DATA Valid to BUSY Low Delay
Bus Access Request to DATA Valid
Bus Relinquish Time
CS Low to SYNC Valid Delay
CS Low to Internal SDCLK Valid Delay
CS Low to SDOUT Delay
CNVST Low to SYNC Delay, Read During Convert
SYNC Asserted to SDCLK First Edge Delay
Internal SDCLK Period
Internal SDCLK High
Internal SDCLK Low
SDOUT Valid Setup Time
SDOUT Valid Hold Time
SDCLK Last Edge to SYNC Delay
CS High to SYNC High-Z
CS High to Internal SDCLK High-Z
CS High to SDOUT High-Z
BUSY High in Master Serial Read After Convert
CNVST Low to SYNC Delay, Read After Convert
SYNC Deasserted to BUSY Low Delay
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
Warp Mode/Normal Mode/Impulse Mode
3
3
3
3
3
3
2
(See Figure 39 and Figure 40)
2
1
3
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Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
REF
= 5 V; all specifications T
Min
10
1/1.25/1.49
10
200
10
20
2
3
30
15
10
4
5
5
Typ
2
50/290/530
See Table 4
710/950/1190
25
MIN
to T
MAX
, unless otherwise noted.
Max
35
850/1100/1350
850/1100/1350
850/1100/1350
40
15
10
10
10
45
10
10
10
AD7951
Unit
ns
μs
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns