Rainbow-electronics MAX2104 Manual do Utilizador descarregar pdf (Página 3)

MAX2104

Direct-Conversion Tuner IC for

Digital DBS Applications

_______________________________________________________________________________________ 3

DC ELECTRICAL CHARACTERISTICS (continued)

= 4.75V to 5.25V, V

= 2.4V, C

IOUT_

= C

QOUT_

= 10pF, f

FLCLK

= 2MHz, RFIN_ = floating, R

IOUT_

= R

QOUT_

= 10kΩ,

FDOUB

= V

INSEL

= V

CPG1

= V

CPG2

= 2.4V, V

PLLIN+

= V

MOD+

= 1.3V, V

PLLIN-

= V

MOD-

= 1.1V, T

= +25°C. Typical values are at

= 5.0V and T

= +25°C, unless otherwise noted.)

AC ELECTRICAL CHARACTERISTICS

= 4.75V to 5.25V, V

IOUT_

= V

QOUT_

= 0.59V

P-P

, C

IOUT_

= C

QOUT_

= 10pF, f

FLCLK

= 2MHz, R

IOUT_

= R

QOUT_

= 10kΩ,

FDOUB

= V

INSEL

= V

CPG1

= V

CPG2

= 2.4V, V

PLLIN+

= V

MOD+

= 1.3V, V

PLLIN-

= V

MOD-

= 1.1V, T

= +25°C. Typical values are at

= 5.0V and T

= +25°C, unless otherwise noted.)

CPG1

= V

CPG2

= 0.5V

CPG1

= 0.5V, V

CPG2

= 2.4V

CONDITIONS

-0.12 -0.1 -0.08

Charge-Pump Output Low

Measured at FB

-0.36 -0.3 -0.24

UNITSMIN TYP MAXSYMBOLPARAMETER

CPG1

= 2.4V, V

CPG2

= 0.5V

CPG1

= V

CPG2

= 2.4V

-0.72 -0.6 -0.48

-2.16 -1.8 -1.44

GC_

= 1V to 4V -50 +50I

GC_

Analog Control Input Current µA

Charge-Pump Output Current

Matching Positive to Negative

%Measured at FB -5 5

Charge-Pump Output Leakage nAMeasured at FB -25 25

Offset Voltage (Note 1) mV

Differential Output Voltage

Swing

P-P

= 2kΩ differential 1

Common-Mode Output Voltage

(Note 1)

V0.65 0.85

-50 +50

Charge-Pump Output Current

Drive (Note 1)

µAMeasured at CP 100

ANALOG CONTROL INPUTS (GC_)

BASEBAND OUTPUTS (IOUT+, IOUT-, QOUT+, QOUT-)

PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS

RF FRONT END

RFIN_ Input Frequency Range f

RFIN

925 2175 MHz

GC1

= V

GC2

= +4V (min gain) -20 dBm

RFIN_ Input Power for 0.59Vp-p

Baseband Levels

Single

carrier

GC1

= V

GC2

= +1V (max gain) -68 -65 dBm

= 2175MHz 5

= 1550MHz 7

RFIN_ Input Third-Order Intercept

(Note 4)

IP3

RFIN_

PRFIN_ = -25dBm per

tone

= 950MHz 8

dBm

RFIN_ Input Second-Order

Intercept (Note 5)

IP2

RFIN_

= -25dBm per tone,

= 951MHz

15.5 dBm

Output-Referred 1dB

Compression Point (Note 6)

dBOUT_

RFIN_

= -40dBm,

signals within filter bandwidth

2 dBV

Noise Figure NF

RFIN_

= -65dBm, f

RFIN_

= 1550MHz,

GC1

= 1V, V

GC2

adjusted 0.59Vp-p

baseband level

11.5 dB

RFIN_

= 925MHz 10

RFIN_ Return Loss (Note 7)

RFIN_

= 2175MHz 10

LO 2nd H ar moni c Rejection (N ote 8) Average level of V

IOUT_

, V

QOUT_

27 dBc

LO H al f H ar m oni c Rej ecti on ( N ote 9) Average level of V

IOUT_

, V

QOUT_

31 38 dBc

1 2 3 4 5 6 7 8 9

Digital DBS Applications 1

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