Datasheet

MAX1067/MAX1068
Multichannel, 14-Bit, 200ksps Analog-to-Digital
Converters
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BIT7 BIT6 BIT5
CH SEL2 CH SEL1 CH SEL0
CHANNEL
AIN_
000 0
001 1
010 2
011 3
100 4
101 5
110 6
111 7
Table 2. Channel Select
BIT4
BIT3
ACTION
SCAN1
SCAN0
Single channel, no scan 0 0
Sequentially scan channels 0 through N
(N ≤ 3)
01
Sequentially scan channels 2 through N
(2 ≤ N ≤ 3)
10
Scan channel N 4 times 1 1
Table 3. MAX1067 Scan Mode, Internal
Clock Only
BIT4
BIT3
ACTION
SCAN1
SCAN0
Single channel, no scan 0 0
Sequentially scan channels 0 through N
(N ≤ 7)
01
Sequentially scan channels 4 through N
(4 ≤ N ≤ 7)
10
Scan channel N 8 times 1 1
Table 4. MAX1068 Scan Mode, Internal
Clock Only (Not for DSP Mode)
BIT2 BIT1
REF/PD_
SEL1
REF/PD
SEL0
REFERENCE
REFERENCE MODE
(INTERNAL REFERENCE)
TYPICAL
SUPPLY
CURRENT
TYPICAL WAKE-
UP TIME
(C
REF
= 1µF)
0 0 Internal
Internal reference and reference buffer stay
on between conversions
1mA NA
0 1 Internal
Internal reference and reference buffer off
between conversions
0.6µA 5ms
1 0 Internal
Internal reference on, reference buffer off
between conversions
0.43mA 5ms
1 1 External Internal reference and buffer always off 0.6µA NA
Table 5. Power-Down Modes
BIT0
INT/EXT
CLK
CLOCK MODE
0 External clock
1 Internal clock
Table 6. Clock Modes