User guide

MAX1464
Low-Power, Low-Noise Multichannel
Sensor Signal Processor
8 _______________________________________________________________________________________
TIMING CHARACTERISTICS
(V
DDF
= V
DD
= 4.5V to 5.5V, V
SSF
= V
SS
= 0V, f
CLK
= 4.0MHz, T
A
= T
MIN
to T
MAX
. Typical values are at V
DDF
= V
DD
= 5.0V, V
SSF
= V
SS
= 0V,
T
A
= +25°C, unless otherwise noted.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Programming Temperature T
PROG
125
°C
Internal Oscillator Clock
Frequency
f
ICLK
OSC[4:0] = 00000 3.3
4.15
5.3
MHz
Min 0.2
External Clock Frequency f
ECLK
V
CKSEL
= 0
Max 5
MHz
External Master Clock Input Low
Time
f
ECLKIN
_
LO
t
ECLK
= 1 / f
ECLK
40 60
%
t
ECLK
External Master Clock Input High
Time
f
ECLKIN
_
HI
t
ECLK
= 1 / f
ECLK
40 60
%
t
ECLK
SERIAL INTERFACE (Figure 1)
SCLK Setup to Falling Edge CS t
SC
30 ns
CS Falling Edge to SCLK Rising
Edge Setup Time
t
CSS
30 ns
CS Idle Time t
CSI
f
CLK
= 4MHz 1.5 µs
CS Period t
CS
f
CLK
= 4MHz 4 µs
SCLK Falling Edge to Data Valid
Delay
t
DO
C
LOAD
= 200pF 80 ns
Data Valid to SCLK Rising Edge
Setup Time
t
DS
30 ns
Data Valid to SCLK Rising Edge
Hold Time
t
DH
30 ns
SCLK High Pulse Width t
CH
100
ns
SCLK Low Pulse Width t
CL
100
ns
CS Rising Edge to SCLK Rising
Edge Hold Time
t
CSH
30 ns
CS Falling Edge to Output
Enable
t
DV
C
LOAD
= 200pF 25 ns
CS Rising Edge to Output
Disable
t
TR
C
LOAD
= 200pF 25 ns