Operating mode,
MAX1262/MAX1264
400ksps, +5V, 8-/4-Channel, 12-Bit ADCs
with +2.5V Reference and Parallel Interface
4 _______________________________________________________________________________________
TIMING CHARACTERISTICS
(V
DD
= V
LOGIC
= +5V ±10%, COM = GND, REFADJ = V
DD
, V
REF
= +2.5V, 4.7µF capacitor at REF pin, f
CLK
= 7.6MHz (50% duty
cycle), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
CONDITIONS UNITSMIN TYP MAXSYMBOLPARAMETER
Standby mode
Operating mode,
f
SAMPLE
= 400ksps
1.0 1.2
mA
2.5 2.9
2.9 3.4
I
DD
Positive Supply Current
V
4.5 5.5
V
DD
Analog Supply Voltage
200
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= V
LOGIC
= +5V ±10%, COM = GND, REFADJ = V
DD
, V
REF
= +2.5V, 4.7µF capacitor at REF pin, f
CLK
= 7.6MHz (50% duty
cycle), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
V
LOGIC
Current I
LOGIC
C
L
= 20pF
210
µA
Power-Supply Rejection PSR V
DD
= +5V ±10%, full-scale input
±0.3 ±0.9
mV
f
SAMPLE
= 400ksps
Nonconverting
V
2.7
V
DD
+
0.3
V
LOGIC
Digital Supply Voltage
WR to CLK Fall Setup Time
t
CWS
40
ns
nsCLK Pulse Width High
nsCLK Period
t
CH
40
t
CP
132
CLK Pulse Width Low t
CL
40
ns
Data Valid to WR Rise Time
t
DS
40
ns
WR Rise to Data Valid Hold Time
t
DH
0
ns
CLK Fall to WR Hold Time
t
CWH
40
ns
CS to CLK or WR Setup Time
t
CSWS
60
ns
CLK or WR to CS Hold Time
t
CSWH
0
ns
CS Pulse Width
t
CS
100
ns
WR Pulse Width
t
WR
60
ns(Note 8)
PARAMETER SYMBOL MIN TYP MAX UNITSCONDITIONS
Shutdown mode
210
0.5 0.8
POWER REQUIREMENTS
µA
External reference
Internal reference
External reference
Internal reference
