Datasheet

MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
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Figure 6. Supply Current vs. Conversion Rate
10,000
1000
0.1
0.1 1 10 100 1k 10k 100k
100
10
1
CONVERSION RATE (SAMPLES)
SUPPLY CURRENT (µA)
V
DD
= 3.0V
DOUT = FS
R
L
= ∞
C
L
= 10pF
SUPPLY CURRENT
vs. CONVERSION RATE
Figure 7. Reference Power-Up vs. Time in Shutdown
0
0.50
0.25
1.00
0.75
1.25
1.50
0.0001 0.010.001 0.1 1 10
TIME IN SHUTDOWN (s)
REFERENCE POWER-UP DELAY (ms)
C
REF
= 4.7µF
A/D STATE
DOUT
HIGH-Z
HIGH-Z
D9 D8 D7 D6 D5 D4 D3 D2 D1 D0 S1 S0
SCLK
143 8 12 15
ACQ
CS
HOLD/CONVERT ACQUISITION
Figure 8. Interface Timing Sequence
CS
SCLK
DOUT
t
DOE
t
DOH
t
DOD
t
DOV
t
CSO
t
CSS
t
CSI
t
CSO
t
CSH
t
CH
t
CL
t
CP
t
CSW
Figure 9. Detailed Serial-Interface Timing