MAX1245 Datasheet, PDF (15/20 Pages) Maxim Integrated Products – +2.375V, Low-Power, 8-Channel, Serial 12-Bit ADC

+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
CLOCK
MODE
SHDN
DIN
SETS EXTERNAL
CLOCK MODE
SXXXXX11
DOUT
12 DATA BITS
MODE
POWERED UP
EXTERNAL
EXTERNAL
SETS SOFTWARE SETS EXTERNAL
POWER-DOWN
CLOCK MODE
SX X XXX0 0
SXX XXX1 1
12 DATA BITS
VALID INVALID
DATA DATA
POWERED UP
SOFTWARE
POWER-DOWN
HARDWARE
POWER-
DOWN
POWERED UP
Figure 12a. Timing Diagram Power-Down Modes, External Clock
CLOCK
MODE
DIN
DOUT
SETS INTERNAL
CLOCK MODE
SXXXXX10
INTERNAL
SETS
POWER-DOWN
SX X XXX0 0
DATA VALID
SSTRB
MODE
CONVERSION
POWERED UP
CONVERSION
S
DATA VALID
SOFTWARE
POWER-DOWN
POWERED UP
Figure 12b. Timing Diagram Power-Down Modes, Internal Clock
Table 4. Software Power-Down and
Clock Mode
PD1
PD0
1
1
1
0
0
1
0
0
DEVICE MODE
External Clock
Internal Clock
Unassigned
Power-Down
Table 5. Hard-Wired Power-Down and
Internal Clock Frequency
SHDN
STATE
DEVICE
MODE
INTERNAL CLOCK
FREQUENCY
1
Enabled
225kHz
Floating
0
Enabled
Power-Down
1.5MHz
N/A
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