DIGITAL TIMING PARAMETERS (Guaranteed over +4.75 V to +5.25 V, 0
8
C to +70
8
C)
Min
Typ
Max
Units
SCLK Period (t
CLK
)
Slave Mode, MS = 0
80
ns
Master Mode, MS = 1*
1/(F
S
×
Bits per Frame)
s
SCLK HI (t
HI
)*
Slave Mode, MS = 0
25
ns
SCLK LO (t
LO
)*
Slave Mode, MS = 0
25
ns
CLKIN Frequency
13.5
MHz
CLKIN HI
30
ns
CLKIN LO
30
ns
Crystals Frequency
27
Input Setup Time (t
S
)
15
ns
Input Hold Time (t
IH
)
10
ns
Output Delay (t
D
)
25
ns
Output Hold Time (t
OH
)
0
ns
Output Hi-Z to Valid (t
ZV
)
15
ns
Output Valid to Hi-Z (t
VZ
)
20
ns
Power Up
RESET
LO Time
50
ms
Operating
RESET
LO Time
100
ns
POWER SUPPLY
Min
Typ
Max
Units
Power Supply Voltage Range*
4.75
5.25
V
–Digital and Analog
Power Supply Current—Operating
100
130
mA
(50% I
VDD
, 50% I
VCC
, Unloaded Outputs)
Power Supply Current—Power Down
20
200
µ
A
Power Supply Rejection (@ 1 kHz)*
40
dB
(At Both Analog and Digital
Supply Pins, Both ADCs and DACs)
CLOCK SPECIFICATIONS*
Min
Max
Units
Input Clock Frequency, Crystals
27
MHz
Clock Duty Cycle Tolerance
±
10
%
Sample Rate (F
S
)
5.5125
50
kHz
*Guaranteed, not tested.
Specifications subject to change without notice.
AD1849K
REV. 0
–5–
