MAX186 Maxim, MAX186 Datasheet - Page 16

• Manufacturer Part Number: MAX186
• Description: Low-Power / 8-Channel / Serial 12-Bit ADCs
• Manufacturer: Maxim

Low-Power, 8-Channel,
Serial 12-Bit ADCs
Figure 12a. Timing Diagram Power-Down Modes, External Clock
Table 5. Typical Power-Up Delay Times
Table 6. Software Shutdown and Clock Mode
16
PD1
Reference
Buffer
Enabled
Enabled
Enabled
Enabled
Disabled
Disabled
1
1
0
0
CLOCK
MODE
MODE
DOUT
SHDN
______________________________________________________________________________________
DIN
PD0
1
0
1
0
INTERNAL
S X X X X X 1 1
Device Mode
External Clock Mode
Internal Clock Mode
Fast Power-Down Mode
Full Power-Down Mode
Reference-
Buffer
Compensation
Mode
Internal
Internal
External
External
SETS EXTERNAL
CLOCK MODE
(12 DATA BITS)
POWERED UP
DATA VALID
VREF
Capacitor
(µF)
4.7
4.7
EXTERNAL
S
X
X
X
X
X
0 1
SETS FAST
POWER-DOWN
MODE
(12 DATA BITS)
Power-
Down
Mode
Fast
Full
Fast
Full
Fast
Full
DATA VALID
Table 7. Hard-Wired Shutdown and
Compensation Mode
Floating
SHDN
State
1
0
POWER-DOWN
SETS EXTERNAL
FAST
CLOCK MODE
Device
Mode
Enabled
Enabled
Full Power-Down
S
X X X X X
Power-Up
Delay
(sec)
5µ
300µ
See Figure 14c
See Figure 14c
2µ
2µ
POWERED UP
1 1
VALID
Internal Compensation
External Compensation
Reference-Buffer
Compensation
DATA INVALID
EXTERNAL
POWER
DOWN
FULL
Rate (ksps)
N/A
Maximum
Sampling
133
133
133
133
POWERED
26
26
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