ACE9030

9

ELECTRICAL CHARACTERISTICS

These characteristics apply over these ranges of conditions (unless otherwise stated):

T

A.C. Characteristics (continued)

Note

8. To simplify single ended drive there is a resistor between FIA and FIAB and another between FIM and FIMB. In this mode the inputs should

drive FIA or FIM with D.C. coupling and the other inputs FIAB and FIMB should be decoupled to ground by external capacitors.

Parameter

Min.

Typ.

Max.

Unit

Conditions

LO2 Multiplier

Amplitude

235

500

mV

rms

Circuit as in fig. 15,

Reference frequency content of output

-10.5

dBc

2nd, 4th harmonic content of output

-13.5

dBc

5th harmonic of output

-15

dBc

6th and higher harmonics in output

-20

dBc

SYNTHESISERS

Reference divider

Reference divider input frequency

5

30

MHz

Drive level into CIN1 from external oscillator

400

mV

pk-pk

With crystal oscillator

powered down

CIN1 input capacitance

10

pF

CIN1 input resistance

10

k

Ω

Auxiliary synthesiser

FIA input frequency

10

135

MHz

May be a sinewave

Rise and fall times of inputs

10

ns

Timing Skew between FIA and FIAB

± 2

ns

See Fig. 6

or

± 10%

signal Both maxima

period must be met

FIA, FIAB differential signal level with both

180

mV

pk-pk

Each input, 5 to 50 &

sides driven

99 to 135 MHz

100

mV

50 to 99 MHz

FIA single input drive level with FIAB

360

mV

pk-pk

One input, 5 to 50 &

decoupled to V

SS

99 to 135 MHz

200

mV

pk-pk

One input,

50 to 99 MHz

FIA, FIAB common mode range

V

V

V

V

FIA, FIAB common mode range

2.8

V

V

V

FIA, FIAB input capacitance

10

pF

FIA, FIAB differential input resistance

10

k

Ω

Note 8

Auxiliary Synthesiser comparison frequency

2

MHz

Main Synthesiser

FIM input frequency

4

20

MHz

Rise and fall times of inputs

50

ns

FIM - FIMB Timing Skew

± 2

ns

See Fig. 6

or

± 10%

signal Both maxima

period must be met

FIM, FIMB differential signal level

100

mV

pk-pk

Each input,

with both sides driven.

4 to 20 MHz

FIM single input drive level

200

1000

mV

pk-pk

One input,

with FIMB decoupled to V

SS

4 to 20 MHz

FIM, FIMB common mode range

V

V

V

V

FIM, FIMB common mode range

2·8

V

V

V

FIM, FIMB input capacitance

10

pF

FIM, FIMB differential input resistance

10

k

Ω

Note 8

Delay FIM rising to MODMP/MODMN changing

30

ns

Main Synthesiser comparison frequency

2

MHz