MAX2701 查看數據表（PDF） - Maxim Integrated

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MAX2701

1.8GHz to 2.5GHz Direct Downconversion Receivers

Maxim Integrated 

1.8GHz to 2.5GHz Direct Downconversion

Receivers

AC ELECTRICAL CHARACTERISTICS (continued)

(MAX2700/MAX2701 EV kit (Figure 3), VCC = +3.0V, TA = +25°C, SHDN = GAIN_SET = VCC, X2_EN = GND, CEXT+ connected to

CEXT-, PLO = -13dBm, FLO = 980MHz (MAX2700) and 1200MHz (MAX2701), PLNAIN = -30dBm, PRFIN = -25dBm, LNAIN and RFIN

(single-ended input to balun) driven from 50Ω source, LNAOUT terminated into load; MIX_I, MIX_Q AC-coupled to 2kΩ load; IIN1+,

QIN1+, IIN2+, QIN2+ driven from 1.1kΩ AC-coupled source; IOUT1, QOUT1 AC-coupled to 2kΩ; IOUT2, QOUT2 AC-coupled to

100Ω; input to VGAs, 20mVp-p at 1MHz tone, set VAGC = 1.25V, unless otherwise noted.)

PARAMETERS

CONDITIONS

MIN TYP MAX UNITS

Group Delay

tgd, RFIN to MIX_I/Q, frequency up to

-1dB baseband width

1.8

ns

Differential Group Delay

(Note 2)

∆tgd (between mixer I and Q channels)

1

ns

Output Impedance

Zout, MIX_I, MIX_Q, frequency up to -1dB baseband

width

1.4

Ω

Mixer Output Level

(Note 2)

MIX_I, MIX_Q, baseband output at -1dB compression

point

1.4

2.1

Vp-p

LO DOUBLER, LO BUFFER, QUADRATURE GENERATOR

LO Frequency Range

(Notes 1, 2)

LO Input Power (Note 7)

X2_EN = GND

X2_EN = VCC

X2_EN = VCC or GND

LO VSWR

MAX2700

MAX2701

Quadrature Error

∆φ , MIX_I to MIX_Q

BASEBAND STAGE 1 (IIN1 TO IOUT1, QIN1 TO QOUT1)

Channel Bandwidth

-1dB bandwidth (Note 2)

-3dB bandwidth

MAX2700

MAX2701

MAX2700

MAX2701

fLO = 900MHz to

1050MHz, X2_EN = GND

fLO = 1800MHz to

2100MHz, X2_EN = VCC

fLO = 1050MHz to

1250MHz, X2_EN = GND

fLO = 2100MHz to

2500MHz, X2_EN = VCC

Input Impedance

Input Impedance Mismatch

Voltage Gain (GV)

IIN1+, IIN1-, QIN1+, QIN1-, single-ended

Between IIN1+ and QIN1+

VAGC = 0.5V

VAGC = 2.0V

Voltage Gain Mismatch

Mismatch between IIN1 to IOUT1 and QIN1 to QOUT1,

0.5V < VAGC < 2 V

VGA1 Gain Slope

Guaranteed Monotonic over 0.5V <VAGC < 2V,

VAGC = 1.25V

Noise Figure

Phase Shift (Note 2)

ZS = 1.1kΩ (Note 8)

For 10dB of gain (with AGC)

VAGC = 2.0V

VAGC = 0.5V

900

1050

1050

1800

1250

MHz

2100

2100

2500

-16

-13

-10 dBm

2.0

1.8

−

1.7

2.0

1.5

4.5 degrees

14

26

56

1.9

4

-1.5

2.2

37

40

0.2

MHz

kΩ

Ω

6

dB

42

dB

34

dB/V

7.5

dB

34

0.5

0.9 degrees

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