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| MAX1117 Datasheet, PDF (10/14 Pages) Maxim Integrated Products – Single-Supply, Low-Power, 2-Channel, Serial 8-Bit ADCs | |||
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Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
ACTIVE
tcsh
CNVST
CH0
tconv
POWER-DOWN MODE
tch tcp
CH0
tccs
SCLK IDLE LOW
tcsd
DOUT
IDLE LOW
tcd
tcl
tchz
D7 (MSB)
D6
D5
D4
D3
D2
D1
D0
Figure 6a. Conversion and Interface Timing, Conversion on CH0 with SCLK Idle Low
ACTIVE
tcsh
POWER-DOWN MODE
CNVST
CH0
tconv
SCLK IDLE HIGH
tch
tcp
CH0
tccs
IDLE HIGH
tcsd
DOUT
tcd
tcl
tchz
D7 (MSB)
D6
D5
D4
D3
D2
D1
D0
Figure 6b. Conversion and Interface Timing, Conversion on CH0 with SCLK Idle High
During the conversion process, SCLK is ignored. Only
after a conversion is complete will SCLK cause serial
data to be output. Falling edges on CNVST, during an
active conversion process, interrupt the current conver-
sion and cause the input multiplexer to switch to CH1.
To reinitiate a conversion on CH0, it is necessary to
allow for a conversion to be complete and all of the
data to be read out. Once a conversion has been com-
pleted, the MAX1117/MAX1118/MAX1119 will go into
AutoShutdown⢠mode (<1µA typ) until the next conver-
sion is initiated.
AutoShutdown is a trademark of Maxim Integrated Products.
10 ______________________________________________________________________________________
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