MAX1080 Datasheet, PDF (17/24 Pages) Maxim Integrated Products – 300ksps/400ksps, Single-Supply, Low-Power, 8-Channel, Serial 10-Bit ADCs with Internal Reference

300ksps/400ksps, Single-Supply, Low-Power,
8-Channel, Serial 10-Bit ADCs with Internal Reference
CS
DIN
S CONTROL BYTE 0
1
8
SCLK
S CONTROL BYTE 1
12
16 1
5
8
S CONTROL BYTE 2
12
16 1
5
8
S ETC.
12
16 1
5
HIGH-Z
DOUT
B9
B4
S0
B9
B4
S0
B9
B4
CONVERSION RESULT 0
CONVERSION RESULT 1
HIGH-Z
SSTRB
Figure 8. Continuous 16-Clock/Conversion Timing
1.50
1.25
1.00
0.75
0.50
0.25
0
0.0001 0.001 0.01 0.1
1
10
TIME IN SHUTDOWN (s)
Figure 9. Reference Power-Up Delay vs. Time in Shutdown
10,000
1000
MAX1081, V_DD1 = V_DD2 = 3.0V
C_LOAD = 20pF
CODE = 1010100000
8 CHANNELS
100
1 CHANNEL
10
1
1
10 100 1k 10k 100k
SAMPLING RATE (sps)
Figure 10b. Average Supply Current vs. Sampling Rate (sps)
Using FULLPD and External Reference
1000
MAX1081, V_DD1 = V_DD2 = 3.0V
C_LOAD = 20pF
CODE = 1010100000
100
2.5
NORMAL OPERATION
2.0
REDP
FASTPD
8 CHANNELS
10
1 CHANNEL
1
0.1
1
10
100
1k
10k
SAMPLING RATE (sps)
1.5
1.0
MAX1081, V_DD1= V_DD2 = 3.0V
C_LOAD = 20pF
CODE = 1010100000
0.5
0 50 100 150 200 250 300 350
SAMPLING RATE (sps)
Figure 10a. Average Supply Current vs. Sampling Rate (sps)
Using FULLPD and Internal Reference
Figure 11. Average Supply Current vs. Sampling Rate (sps) Using
FASTPD, REDP, Normal Operation, and Internal Reference
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