Rainbow Electronics MAX152 - Manual (Page 4)

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MAX152
+3V, 8-Bit ADC with 1µA Power-Down
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS
MAX152C/E
T
A
= T
MIN
to T
MAX
MIN MAX
MAX152M
T
A
= T
MIN
to T
MAX
MIN MAX
UNITS
WR Pulse Width t WR 0.6 10 0.66 10 0.8 10 µs
Delay Time Between
WR and RD Pulses
t
RD 0.8 0.9 1.0 µs
RD Pulse Width t
READ1 400 500 600 ns
t
ACC1 400 500 600 ns
RD to INT Delay t
RI 300 340 400 ns
t
CWR
t
RD
< t
INTL
,
C L = 100pF
1.8 2.06 2.4 µs
Conversion Time
(RD Mode)
t
CRD 2.0 2.3 2.6 µs
Power-Up Time t
UP 0.9 1.2 1.4 µs
CS to RD,WR
Setup Time
t
CSS 0 0 0 ns
CS to RD,WR
Hold Time
t
CSH 0 0 0 ns
CS to RDY
Delay
t RDY
C L = 50pF,
R
L
= 5.1k Ω to V
DD
100 120 140 ns
WR to INT Delay t
INTL
C
L
= 50pF 0.7 1.45 1.6 1.8
RD Pulse Width t READ2
WR-RD mode,
t
RD
> t
INTL
,
determined by t
ACC2
(Figure 5)
180 220 250 ns
Data Access Time
(Note 7)
t ACC2 180 220 250 ns
WR to INT Delay t
IHWR 180 200 240 ns
Data Access Time
After
INT (Note 7)
t
ID
Stand-alone mode,
C
L
= 100pF
100 130 150 ns
Data Access Time
(RD Mode) (Note 7)
t
ACC0
C
L
= 100pF
t
CRD
+100
t
CRD
+150
ns
RD to INT Delay
(RD Mode)
t
INTH
C
L
= 50pF 100 160 170 180 ns
Data Hold Time
(Note 8)
t
DH 100 130 150 ns
t
P 450 600 700 ns
ALL GRADES
T
A
= +25°C
MIN TYP MAX
Conversion Time
(WR-RD Mode)
Delay Time Between
Conversions
Data Access Time
(Note 7)
WR-RD mode,
determined by t
ACC1
(Figure 6)
WR-RD mode,
t
RD
< t
INTL
, C
L
= 100pF
(Figure 6)
WR-RD mode,
t
RD < t INTL , C L = 100pF
(Figure 5)
t
CRD
+130
µs
TIMING CHARACTERISTICS
(Unipolar input range, V
DD
= 3V, V
SS
= 0V, T
A
= +25°C, unless otherwise noted.) (Note 6)
Note 6: Input control signals are specified with tr = tf = 5ns, 10% to 90% of +3.0V, and timed from a voltage level of 1.3V. Timing
delays get shorter at higher supply voltages. See the Converson Time vs. Supply Voltage graph in the Typical Operating
Characteristics to extrapolate timing delays at other power-supply voltages.
Note 7: See Figure 1 for load circuit. Parameter defined as the time required for the output to cross 0.66V or 2.0V.
Note 8: See Figure 2 for load circuit. Parameter defined as the time required for the data lines to change 0.5V.
Stand-alone mode,
C
L
= 50pF