AD7484 Analog Devices, AD7484 Datasheet - Page 5

• Manufacturer Part Number: AD7484
• Description: 14-Bit, 3 MSPS SAR ADC
• Manufacturer: Analog Devices

Specifications of AD7484

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 3MSPS
• Interface: Par
• Analog Input Type: SE-Uni
• Ain Range: Uni 2.5V
• Adc Architecture: SAR
• Pkg Type: QFP

TIMING CHARACTERISTICS
AV
unless otherwise noted.
Table 2.
Parameter
DATA READ
DATA WRITE
1
All timing specifications given are with a 25 pF load capacitance. With a load capacitance greater than this value, a digital buffer or latch must be used.
Conversion Time
Quiet Time Before Conversion Start
CONVST
CONVST Falling Edge to
CS Falling Edge to
Data Access Time
CONVST
BUSY
Bus Relinquish Time
RD Rising Edge to
CS
RD
WRITE Pulse Width
Data Setup Time
Data Hold Time
CS
WRITE Falling Edge to CS
DD
/DV
Pulse Width
Falling Edge to WRITE Falling Edge
Pulse Width
Rising Edge to New Data Valid
DD
1
Pulse Width
Falling Edge to New Data Valid
= 5 V ± 5%, AGND = DGND = 0 V, V
CS Rising Edge
RD Falling Edge
BUSY Falling Edge
Rising Edge
REF
= external; all specifications T
Rev. C | Page 5 of 20
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CONV
QUIET
1
2
3
4
5
6
7
8
14
15
9
10
11
12
13
MIN
to T
MAX
Min
100
5
0
0
30
30
5
2
6
5
0
and valid for V
Typ
10
DRIVE
= 2.7 V to 5.25 V,
Max
300
100
20
25
30
5
AD7484
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns