MAX1082 Datasheet, PDF (17/24 Pages) Maxim Integrated Products – 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference

300ksps/400ksps, Single-Supply, 4-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
DOUT
B9
B4
S0
B9
B4
S0
B9
B4
CONVERSION RESULT 0
CONVERSION RESULT 1
SSTRB
Figure 7. Continuous 16-Clock/Conversion Timing
1.50
10,000
MAX1083, V_DD1 = V_{DD 2}= 3.0V
1.25
C_LOAD = 20pF
CODE = 1010100000
1000
1.00
4 CHANNELS
0.75
100
0.50
1 CHANNEL
10
0.25
0
0.0001 0.001 0.01 0.1
1
10
TIME IN SHUTDOWN (s)
Figure 8. Reference Power-Up Delay vs. Time in Shutdown
1
1
10
100
1k
10k 100k
SAMPLING RATE (sps)
Figure 9b. Average Supply Current vs. Conversion Rate with
External Reference in FULLPD
1000
MAX1083, V_DD1 = V_DD2 = 3.0V
C_LOAD = 20pF
CODE = 1010100000
100
4 CHANNELS
10
1 CHANNEL
1
0.1
1
10
100
1k
10k
SAMPLING RATE (sps)
2.5
NORMAL OPERATION
2.0
REDP
FASTPD
1.5
1.0
MAX1083, 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 9a. Average Supply Current vs. Conversion Rate with
Internal Reference in FULLPD
Figure 10. Average Supply Current vs. Sampling Rate (in
FASTPD, REDP, and Normal Operation)
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