Rainbow-electronics MAX1211 Manual do Utilizador descarregar pdf (Página 17)

MAX1211

65Msps, 12-Bit, IF Sampling ADC

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Pin Description (continued)

PIN NAME FUNCTION

CLKTYP

Clock Type Definition Input. Connect CLKTYP to GND to define the single-ended clock input. Connect

CLKTYP to OV

or V

to define the differential clock input.

12–15,

Analog Power Input. Connect V

to a 3.0V to 3.6V power supply. Bypass V

to GND with a parallel

capacitor combination of ≥2.2µF and 0.1µF. Connect all V

pins to the same potential.

17, 34 OV

Output Driver Power Input. Connect OV

to a 1.7V to V

power supply. Bypass OV

to GND with a

parallel capacitor combination of ≥2.2µF and 0.1µF.

18 DOR

Data Out-of-Range Indicator. The DOR digital output indicates when the analog input voltage is out of

range. When DOR is high, the analog input is beyond its full-scale range. When DOR is low, the analog

input is within its full-scale range.

19 D11 CMOS Digital Output, Bit 11 (MSB)

20 D10 CMOS Digital Output, Bit 10

21 D9 CMOS Digital Output, Bit 9

22 D8 CMOS Digital Output, Bit 8

23 D7 CMOS Digital Output, Bit 7

24 D6 CMOS Digital Output, Bit 6

25 D5 CMOS Digital Output, Bit 5

26 D4 CMOS Digital Output, Bit 4

27 D3 CMOS Digital Output, Bit 3

28 D2 CMOS Digital Output, Bit 2

29 D1 CMOS Digital Output, Bit 1

30 D0 CMOS Digital Output, Bit 0 (LSB)

31, 32 I.C. Internally Connected. Leave I.C. unconnected.

33 DAV

Data Valid Output. The DAV is a single-ended version of the input clock that is compensated to correct

for any input clock duty-cycle variations. DAV is typically used to latch the MAX1211 output data into an

external back-end digital circuit.

37 PD Power-Down Input. Force PD high for power-down mode. Force PD low for normal operation.

REFOUT

Internal Reference Voltage Output. For internal reference operation, connect REFOUT directly to REFIN

or use a resistive divider from REFOUT to set the voltage at REFIN. Bypass REFOUT to GND with a

≥0.1µF capacitor.

39 REFIN Reference Input. V

REFIN

= 2 x (V

REFP

- V

REFN

). Bypass REFIN to GND with a ≥0.1µF capacitor.

40 G/T

Output Format Select Input. Connect G/T to GND for the two’s complement digital output format. Connect

G/T to OV

or V

for the Gray code digital output format.

—EP

Exposed Paddle. EP is internally connected to GND. Externally connect EP to GND to achieve specified

performance.

1 2 ... 12 13 14 15 16 17 18 19 20 21 22 ... 29 30

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