Rainbow-electronics MAX1116 Manual de usuario descargar pdf (Pagina 9)

After CNVST is brought low, allow 7.5µs for the conver-

sion to be completed. While the internal conversion is in

progress, DOUT is low. The MSB is present at the

DOUT pin immediately after conversion is completed.

The conversion result is clocked out at the DOUT pin

and is coded in straight binary (Figure 7). Data is

clocked out at SCLK’s falling edge in MSB-first format

at rates up to 5MHz. Once all data bits are clocked out,

DOUT goes high impedance (100ns to 500ns after the

rising edge) of the eighth SCLK pulse.

SCLK is ignored during the conversion process. Only

after a conversion is complete will SCLK cause serial

data to be output. Falling edges on CNVST during an

MAX1115/MAX1116

Single-Supply, Low-Power, Serial 8-Bit ADCs

_______________________________________________________________________________________ 9

ACTIVE POWER-DOWN MODE

CNVST

SCLK

DOUT

CH0

IDLE LOW IDLE LOW

CH0

CSH

CONV

ccs

CSL

chz

D7 (MSB) D6 D5 D4 D3 D2 D1 D0

csd

Figure 6c. Conversion and Interface Timing, Conversion on V

/ 2 with SCLK Idle Low

ACTIVE POWER-DOWN MODE

CNVST

SCLK

DOUT

CH0

IDLE HIGHIDLE HIGH

CH0

CSH

CONV

ccs

csl

chz

D7 (MSB) D6 D5 D4 D3 D2 D1 D0

csd

Figure 6d. Conversion and Interface Timing, Conversion on V

/ 2 with SCLK Idle High

1 2 3 4 5 6 7 8 9 10 11 12

MAX1115/MAX1116 1

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Rainbow-electronics MAX1116 Manual de usuario Pagina 9

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