1.8GHz to 2.5GHz Direct Downconversion

Receivers

6

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AC ELECTRICAL CHARACTERISTICS (continued)

(single-ended input to balun) driven from 50

Ω source, LNAOUT terminated into load; MIX_I, MIX_Q AC-coupled to 2kΩ load; IIN1+,

QIN1+, IIN2+, QIN2+ driven from 1.1k

Ω AC-coupled source; IOUT1, QOUT1 AC-coupled to 2kΩ; IOUT2, QOUT2 AC-coupled to

100

PARAMETERS

CONDITIONS

MIN

TYP

MAX

UNITS

IIN1+ to IOUT1, up to -1dB frequency

1.6

Group Delay

QIN1+ to QOUT1, up to -1dB frequency

1.6

ns

Group Delay Mismatch (Note 2)

Between I and Q channel from 100kHz up to -1dB

0.3

1.3

ns

Output Impedance

IOUT1, QOUT1, up to -1dB bandwidth

7

Ω

Output Impedance Mismatch

Between IOUT1 and QOUT1, up to -1dB bandwidth

1

Ω

Output Voltage (Note 2)

At -1dB compression point, IOUT1, QOUT1

0.7

1.1

Vp-p

BASEBAND STAGE 2 (IIN2+ TO IOUT2, QIN2+ TO QOUT2)

-1dB bandwidth (Note 2)

19

34

Channel Bandwidth

-3dB bandwidth

63

MHz

Input Impedance

IIN2+, IIN2-, QIN2+, QIN2-, single-ended

2.1

K

Ω

Input Impedance Mismatch

Between IIN2+ and QIN2+

1.5

Ω

-0.6

4.4

9.5

Voltage Gain (G

37

39

42

dB

Gain Correction Disabled

0.9

Voltage Gain Mismatch

(Note 2)

Mismatch between IIN2 to

IOUT2 and QIN2 to

Gain Correction Enabled

(2dB initial mismatch)

0.3

dB

VGA2 Gain Slope

30

dB/V

14

Noise Figure

47

dB

Phase shift (Note 2)

For 10dB of gain

0.2

1.4

degrees

Group Delay

IIN2+ to IOUT2, QIN2+ to QOUT2, up to -1dB Frequency

1.7

ns

Group Delay Mismatch

(Note 2)

Between I and Q channel from 100kHz up to -1dB

frequency

0.2

2.0

ns

Output Impedance

IOUT2 , QOUT2, up to -1dB bandwidth

4.0

Ω

Output Impedance Mismatch

Between IOUT2 and QOUT2, up to -1 dB bandwidth

4.0

Ω

Output Voltage (Note 2)

At -1dB compression point, IOUT2 , QOUT2

1.2

1.9

Vp-p