Rainbow-electronics MAX1002 Manual do Utilizador descarregar pdf (Página 9)

Output Data Format

The conversion results are output on a dual 6-bit-wide

data bus. Data is latched into the ADC output latch fol-

lowing a pipeline delay of one clock cycle (Figure 8).

Output data is clocked out of the respective ADC’s data-

output pins (D_0 through D_5) on the rising edge of the

clock output (DCLK), with a DCLK-to-data propagation

delay (t

) of 7.1ns. The MAX1002 outputs are TTL com-

patible.

Transfer Function

Figure 9 shows the MAX1002’s nominal transfer function.

Output coding is offset binary with 1LSB = FSR / 63.

MAX1002

Low-Power, 60Msps, Dual, 6-Bit ADC

_______________________________________________________________________________________ 9

Figure 9. Ideal Transfer Function

111111

OUTPUT CODE

111110

111101

100001

100000

011111

011110

000011

000010

000001

000000

-FSR

1LSB

INPUT VOLTAGE

FSR

(_IN+ to _IN-)

Figure 8. MAX1002 Timing Diagram

DATA OUT

1.4V

DATA VALID N - 1 DATA VALID N

1.4V

50%

SKEW

DCLK

TNK+

(INPUT CLOCK)

DCLK

ANALOG

INPUT

N + 1

N + 2

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

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