Datasheet

MAX1245
+2.375V, Low-Power, 8-Channel,
Serial 12-Bit ADC
______________________________________________________________________________________ 15
POWERED UP
HARDWARE
POWER-
DOWN
POWERED UP
POWERED UP
12 DATA BITS
12 DATA BITS
INVALID
DATA
VALID
DATA
EXTERNAL
EXTERNAL
SX
XXXX
11 S 00
XXXXX XX XXX
S11
SOFTWARE
POWER-DOWN
MODE
DOUT
DIN
CLOCK
MODE
SHDN
SETS EXTERNAL
CLOCK MODE
SETS EXTERNAL
CLOCK MODE
SETS SOFTWARE
POWER-DOWN
SOFTWARE
POWER-DOWN
POWERED UP
POWERED UP
DATA VALID
DATA VALID
INTERNAL
SX
XXXX
10 S 00
XXXXX
S
MODE
DOUT
DIN
CLOCK
MODE
SETS INTERNAL
CLOCK MODE
SETS
POWER-DOWN
CONVERSION
CONVERSION
SSTRB
Figure 12a. Timing Diagram Power-Down Modes, External Clock
Figure 12b. Timing Diagram Power-Down Modes, Internal Clock
PD1 PD0 DEVICE MODE
1 1 External Clock
1 0 Internal Clock
0 1 Unassigned
0 0 Power-Down
SSHHDDNN
DEVICE INTERNAL CLOCK
STATE MODE FREQUENCY
1 Enabled 225kHz
Open Enabled 1.5MHz
0 Power-Down N/A
Table 4. Software Power-Down and
Clock Mode
Table 5. Hard-Wired Power-Down and
Internal Clock Frequency