MAX3580(2006) 데이터 시트보기 (PDF) - Maxim Integrated

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MAX3580
(Rev.:2006)

Direct-Conversion TV Tuner

Maxim Integrated 

Direct-Conversion TV Tuner

AC ELECTRICAL CHARACTERISTICS

(MAX3580 EV kit, VCC = +3.1V to +3.5V, GND = 0V. RF_AGC = BB_AGC = +2.85V, RF input terminated into a 75Ω load, BBI_ and

BBQ_ loaded by RL greater than 2kΩ and CL less than 10pF, VCO active, registers are set according to the recommended default

register conditions, TA = -40°C to +85°C, unless otherwise noted. Typical values are at VCC = +3.3V, TA = +25°C, unless otherwise

noted.) (Note 1)

PARAMETER

Operating Frequency Range

Overall Voltage Gain (Note 2)

RF Gain Flatness

Input Return Loss

Noise Figure (DSB) (Notes 3, 4)

Input 2nd-Order Intercept Point

Input 3rd-Order Intercept Point

SYMBOL

CONDITIONS

MIN

fRF

Gain specification met across this

frequency band

170

470

RF_AGC = BB_AGC = +2.85V

74

RF_AGC = BB_AGC = +0.5V

Within each VHF-III and UHF band (Note 10)

-3

Worst case across band selected, 75Ω system

230MHz

NF

470MHz

858MHz

Broadband (Notes 4, 5)

12

IIP2

Broadband, RF_AGC adjusted for 49dB of gain

Broadband (Notes 4, 6)

Broadband, RF_AGC adjusted for 49dB of gain

IIP3 Narrowband (Notes 4, 7)

-15

TYP

7

5.4

4.7

6.5

> 26

> -4

> 12

MAX

230

878

UNITS

MHz

dB

26

+3

dB

dB

dB

dBm

dBm

Narrowband, RF_AGC adjusted for 49dB of

gain (Note 7)

3

RF 1dB Desense

LO Harmonic Reception

PDESIRED = -78dBm and converted to

3.75MHz, PTONE 10MHz higher (Note 4)

-24

RF_AGC adjusted for 49dB of gain,

PDESIRED = -55dBm

-1

RF input range of 170MHz to 960MHz (Note 8)

RF input range of 960MHz to 1400MHz

-60

> -40

dBm

dBc

RF Channel Flatness

8MHz RF channel at baseband, tested at

-1

169MHz and 469MHz

+1

dB

Isolation

Quadrature Accuracy

Spurious at the RF Input (Note 3)

Phase Noise (Single-Sideband,

Closed Loop)

DC to 30MHz, RF input to baseband output,

> 60

dBc

relative to desired channel

I/Q phase error at 1MHz

-3

+3 Degrees

I/Q amplitude error at 1MHz

-1.5

+1.5

dB

50MHz to 470MHz

-50

-20

470MHz to 878MHz

-50

-35 dBmV

878MHz to 1732MHz

< -50 -20

At 1kHz to 10kHz (Note 3)

-80

-90

ΦN

At 100kHz (Note 3)

-94 -107

dBc/Hz

At 1MHz

-130

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