Max2114 dbs direct downconverter, Ac electrical characteristics (continued) – Rainbow Electronics MAX2114 User Manual

Page 5

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MAX2114

DBS Direct Downconverter

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5

Note 1:

Minimum and maximum values are guaranteed by design and characterization over supply voltage.

Note 2

Driving differential load of 10k

Ω || 15pF.

Note 3:

Two signals are applied to RFIN_ at (f

LO

- 100MHz) and (f

LO

- 199MHz). V

GC2

= 1V, V

GC1

is set so that the baseband out-

puts are at 590mVp-p. IM products are measured at baseband outputs but are referred to RF inputs.

Note 4:

Two signals are applied to RFIN_ at 1200MHz and 2150MHz. V

GC2

= 1V, V

GC1

is set so that the baseband outputs are at

590mVp-p. IM products are measured at baseband outputs but are referred to RF inputs.

Note 5:

P

RFIN_

= -40dBm so that front-end IM contributions are minimized.

Note 6:

Using L64733/L64734 demo board from LSI Logic.

Note 7:

Downconverted level, in dBc, of carrier present at f

LO

× 2, f

LO

= 1180MHz, f

VCO

= 590MHz, V

RFBAND

= unconnected.

Note 8:

Downconverted level, in dBc, of carrier present at f

O

/ 2, f

LO

= 2175MHz, f

VCO

= 1087.5MHz, V

RFBAND

= 2.4V.

Note 9:

Leakage is dominated by board parasitics.

Note 10: V

CPG1

= V

CPG2

= V

RFBAND

= V

INSEL

= 0.5V, f

FLCLK

= 0.5MHz.

Note 11: Guaranteed by design and characterization over supply and temperature.
Note 12: Measured at tuned frequency with PLL locked. PLL loop bandwidth = 3kHz. All phase noise measurements assume tank

components have a Q > 50.

AC ELECTRICAL CHARACTERISTICS (continued)

(IC driven single-ended with RFIN- AC-terminated in 75

Ω to GND, V

CC

= +4.75V to +5.25V, V

IOUT_

= V

QOUT_

= 0.59Vp-p,

C

IOUT_

= C

QOUT_

= 10pF, f

FCLK

= 500kHz, R

IOUT_

= R

QOUT_

= 10k

Ω, V

LOBUFSEL

= 0.5V, V

RFBAND

= V

INSEL

= V

CPG1

= V

CPG2

= +2.4V,

V

PLLIN+

= V

MOD+

= +1.3V, V

PLLIN-

= V

MOD-

= +1.1V, T

A

= +25°C, unless otherwise noted. Typical values are at V

CC

= +5V.)

LOCAL OSCILLATOR

SYNTHESIZER

-96

PARAMETER

SYMBOL

MIN

TYP

MAX

UNITS

At 100kHz offset, f

LO

= 2175MHz

dBc/Hz

LO Phase Noise (Notes 6, 12)

-75

At 10kHz offset, f

LO

= 2175MHz

58

0

Figure 1

f

RFIN

= 2175MHz

dB

RFIN+ to LO Input Isolation (Note 9)

-60

590

1180

MHz

LO Tuning Range (Note 11)

ns

4

7.26

MHz

Crystal Frequency Range (Note 1)

0.8

1

1.5

Load = 10pF | | 10k

Ω, f

XTLOUT

= 4MHz

Vp-p

XTLOUT Output Voltage Swing

At 1kHz offset, f

LO

= 2175MHz

MOD+, MOD- Hold Time (Note 1)

t

HM

7

Figure 1

CONDITIONS

ns

MOD+, MOD- Setup Time (Note 1)

t

SUM

70

V

LOBUFSEL

≥ 2.4V,

f

LO

= 925 MHz + 2175MHz

mV

RMS

LO Buffer Output Voltage (Note 1)

SYNTHESIZER

LOCAL OSCILLATOR

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