
MAX1084/MAX1085
400ksps/300ksps, Single-Supply, Low-Power,
Serial 10-Bit ADCs with Internal Reference
______________________________________________________________________________________
11
Figure 6. Supply Current vs. Conversion Rate
10,000
1000
0.1
1
10
100
1k
10k
100k
100
10
1
CONVERSION RATE (SAMPLES)
SUPPLY
CURRENT
(
A)
VDD = 3.0V
DOUT = FS
RL = ∞
CL = 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
0.01
0.001
0.1
1
10
TIME IN SHUTDOWN (s)
REFERENCE
POWER-UP
DELAY
(ms)
CREF = 4.7F
A/D STATE
DOUT
HIGH-Z
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
S1
S0
SCLK
14
3
8
12
15
ACQ
CS
HOLD/CONVERT
ACQUISITION
Figure 8. Interface Timing Sequence
CS
SCLK
DOUT
tDOE
tDOH
tDOD
tDOV
tCSO
tCSS
tCSI
tCSO
tCSH
tCH
tCL
tCP
tCSW
Figure 9. Detailed Serial-Interface Timing