MAX1082_12 Datasheet, PDF (17/23 Pages) Maxim Integrated Products – 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference

MAX1082/MAX1083
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
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 8. Reference Power-Up Delay vs. Time in Shutdown
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)
Figure 9a. Average Supply Current vs. Conversion Rate with
Internal Reference in FULLPD
Maxim Integrated
10,000
1000
MAX1083, V_DD1 = V_{DD 2}= 3.0V
C_LOAD = 20pF
CODE = 1010100000
4 CHANNELS
100
1 CHANNEL
10
1
1
10
100
1k
10k 100k
SAMPLING RATE (sps)
Figure 9b. Average Supply Current vs. Conversion Rate with
External Reference in FULLPD
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 10. Average Supply Current vs. Sampling Rate (in
FASTPD, REDP, and Normal Operation)
17