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MAX2104

Direct-Conversion Tuner IC for Digital DBS Applications

Maxim Integrated 

Direct-Conversion Tuner IC for

Digital DBS Applications

DC ELECTRICAL CHARACTERISTICS (continued)

(VCC = 4.75V to 5.25V, VFB = 2.4V, CIOUT_ = CQOUT_ = 10pF, fFLCLK = 2MHz, RFIN_ = floating, RIOUT_ = RQOUT_ = 10kΩ,

VFDOUB = VINSEL = VCPG1 = VCPG2 = 2.4V, VPLLIN+ = VMOD+ = 1.3V, VPLLIN- = VMOD- = 1.1V, TA = +25°C. Typical values are at

VCC = 5.0V and TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

Charge-Pump Output Low

Measured at FB

VCPG1 = VCPG2 = 0.5V

VCPG1 = 0.5V, VCPG2 = 2.4V

VCPG1 = 2.4V, VCPG2 = 0.5V

VCPG1 = VCPG2 = 2.4V

-0.12 -0.1 -0.08

-0.36 -0.3 -0.24

mA

-0.72 -0.6 -0.48

-2.16 -1.8 -1.44

Charge-Pump Output Current

Matching Positive to Negative

Measured at FB

-5

5

%

Charge-Pump Output Leakage

Measured at FB

-25

25

nA

Charge-Pump Output Current

Drive (Note 1)

Measured at CP

100

µA

ANALOG CONTROL INPUTS (GC_)

Analog Control Input Current

IGC_ VGC_ = 1V to 4V

-50

+50

µA

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

Differential Output Voltage

Swing

RL = 2kΩ differential

1

VP-P

Common-Mode Output Voltage

(Note 1)

0.65

0.85

V

Offset Voltage (Note 1)

-50

+50

mV

AC ELECTRICAL CHARACTERISTICS

(VCC = 4.75V to 5.25V, VIOUT_ = VQOUT_ = 0.59VP-P, CIOUT_ = CQOUT_ = 10pF, fFLCLK = 2MHz, RIOUT_ = RQOUT_ = 10kΩ,

VFDOUB = VINSEL = VCPG1 = VCPG2 = 2.4V, VPLLIN+ = VMOD+ = 1.3V, VPLLIN- = VMOD- = 1.1V, TA = +25°C. Typical values are at

VCC = 5.0V and TA = +25°C, unless otherwise noted.)

PARAMETER

SYMBOL

CONDITIONS

MIN TYP MAX UNITS

RF FRONT END

RFIN_ Input Frequency Range

fRFIN

925

2175 MHz

RFIN_ Input Power for 0.59Vp-p

Single

VGC1 = VGC2 = +4V (min gain)

-20

dBm

Baseband Levels

carrier

VGC1 = VGC2 = +1V (max gain)

-68

-65 dBm

RFIN_ Input Third-Order Intercept

(Note 4)

IP3RFIN_

PRFIN_ = -25dBm per

tone

fLO = 2175MHz

fLO = 1550MHz

fLO = 950MHz

5

7

dBm

8

RFIN_ Input Second-Order

Intercept (Note 5)

IP2RFIN_

PRFIN_ = -25dBm per tone,

fLO = 951MHz

15.5

dBm

Output-Referred 1dB

Compression Point (Note 6)

P1dBOUT_

PRFIN_ = -40dBm,

signals within filter bandwidth

2

dBV

Noise Figure

PRFIN_ = -65dBm, fRFIN_ = 1550MHz,

NF VGC1 = 1V, VGC2 adjusted 0.59Vp-p

baseband level

11.5

dB

RFIN_ Return Loss (Note 7)

LO 2nd Harmonic Rejection (Note 8)

LO Half Harmonic Rejection (Note 9)

fRFIN_ = 925MHz

fRFIN_ = 2175MHz

Average level of VIOUT_, VQOUT_

Average level of VIOUT_, VQOUT_

10

dB

10

27

dBc

31

38

dBc

_______________________________________________________________________________________ 3

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