ADC 6 Spécifications télécharger pdf (Page 18)

DR GND

ADC12D1800RF

SNAS518I –JULY 2011–REVISED JANUARY 2014

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Table 2-4. High-Speed Digital Outputs (continued)

Ball No. Name Equivalent Circuit Description

J18/J19 DI11+/-

H19/H20 DI10+/-

H17/H18 DI9+/-

G19/G20 DI8+/-

G17/G18 DI7+/-

F18/F19 DI6+/-

E19/E20 DI5+/-

I- and Q-channel Digital Data Outputs. In Non-

D19/D20 DI4+/-

Demux Mode, this LVDS data is transmitted at the

D18/E18 DI3+/-

sampling clock rate. In Demux Mode, these

C19/C20 DI2+/-

outputs provide ½ the data at ½ the sampling

B19/B20 DI1+/-

clock rate, synchronized with the delayed data, i.e.

B18/C17 DI0+/-

the other ½ of the data which was sampled one

· ·

clock cycle earlier. Compared with the DId and

M18/M19 DQ11+/-

DQd outputs, these outputs represent the later

N19/N20 DQ10+/-

time samples. If used, each of these outputs

N17/N18 DQ9+/-

should always be terminated with a 100Ω

P19/P20 DQ8+/-

differential resistor placed as closely as possible

P17/P18 DQ7+/-

to the differential receiver.

R18/R19 DQ6+/-

T19/T20 DQ5+/-

U19/U20 DQ4+/-

U18/T18 DQ3+/-

V19/V20 DQ2+/-

W19/W20 DQ1+/-

W18/V17 DQ0+/-

A18/A19 DId11+/-

B17/C16 DId10+/-

A16/B16 DId9+/-

B15/C15 DId8+/-

C14/D14 DId7+/-

A14/B14 DId6+/-

B13/C13 DId5+/-

C12/D12 DId4+/- Delayed I- and Q-channel Digital Data Outputs. In

A12/B12 DId3+/- Non-Demux Mode, these outputs are at TRI-

B11/C11 DId2+/- STATE. In Demux Mode, these outputs provide ½

C10/D10 DId1+/- the data at ½ the sampling clock rate,

A10/B10 DId0+/- synchronized with the non-delayed data, i.e. the

· · other ½ of the data which was sampled one clock

Y18/Y19 DQd11+/- cycle later. Compared with the DI and DQ outputs,

W17/V16 DQd10+/- these outputs represent the earlier time samples.

Y16/W16 DQd9+/- If used, each of these outputs should always be

W15/V15 DQd8+/- terminated with a 100Ω differential resistor placed

V14/U14 DQd7+/- as closely as possible to the differential receiver.

Y14/W14 DQd6+/-

W13/V13 DQd5+/-

V12/U12 DQd4+/-

Y12/W12 DQd3+/-

W11/V11 DQd2+/-

V10/U10 DQd1+/-

Y10/W10 DQd0+/-

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