AD9516-2SLASHPCBZ datasheet(70/84 Pages) AD

70 / 84 page

AD9516-2

Rev. 0 | Page 70 of 84

Reg.

Addr

(Hex) Bit(s) Name

Description

<5:3> OUT9 Ramp

Capacitors

Selects the number of ramp capacitors used by the delay function. The combination of the number of

capacitors and the ramp current sets the delay full scale.

<5> <4> <3> Number of Capacitors

<2:0> OUT9 Ramp

Current

Ramp current for the delay function. The combination of the number of capacitors and the ramp

current sets the delay full scale.

<2> <1> <0> Current Value (μA)

200

400

600

800

1000

1200

1400

1600

<5:0> OUT9 Delay

Fraction

Selects the fraction of the full-scale delay desired (6-bit binary).

000000 gives zero delay.

Only delay values up to 47 decimals (101111b; 0x2F) are supported.

Table 55. LVPECL Outputs

Reg.

Addr

(Hex) Bit(s) Name

Description

<4>

OUT0 Invert

Sets the output polarity.

<4> = 0; noninverting.

<4> = 1; inverting.

<3:2> OUT0 LVPECL Sets the LVPECL output differential voltage (VOD).

Differential

<3>

<2>

VOD (mV)

Voltage

400

600

780

960

<1:0> OUT0

LVPECL power-down modes.

Power-Down <1>

<0>

Mode

Output

Normal operation.

Partial power-down, reference on; use only if there are no external load resistors.

Off

Partial power-down, reference on, safe LVPECL power-down.

Off

Total power-down, reference off; use only if there are no external load resistors.

Off

<4>

OUT1 Invert

Sets the output polarity.

<4> = 0; noninverting.

<4> = 1; inverting.

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