TQ5131 查看數據表（PDF） - TriQuint Semiconductor

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TQ5131

3V Cellular Band CDMA/AMPS RFA/Mixer IC

TriQuint Semiconductor 

C1 = Mixer Mode, C2 = RFA gain select and LNA gain select ,

C3 = IFA gain select and LNA mode select.

Receiver State RF AMP

IF AMP

AMPS Mode

HG, AMPS Idd HG, AMPS Output

CDMA High Gain HG, CDMA Idd LG, CDMA Output

CDMA HG, low lin HG, CDMA Idd HG, CDMA Output

CDMA Mid Gain Bypass

LG, CDMA Output

CDMA Low Gain Bypass

HG, CDMA Output

Table 2. Electrical States of RFA and IFA

Rx SYSTEM PERFORMANCE

When measuring the mixer alone you will find that the low gain

mode has a higher gain than the mid gain mode. These two

modes describe the whole system (LNA + Mixer) spec rather

than just the mixer. The difference between CDMA High-Gain

(HG) and CDMA High-Gain-Low-Linearity (HGLL) is the input

intercept of the LNA. In HG the LNA input intercept is +8dBm

and so can withstand crossmodulation while transmitting. The

HGLL mode is intended for standby phone operation where no

transmission is taking place.

MODE IDD GAIN NF

IIP3

(mA) (dB)

(dB) (dBm)

AMPS 14

21.5 2.3 -13

High Gain 27.8 26

1.74 -8.9

HGLL

20.9 27.2

2.08 -10.6

Mid Gain 23

14.9 3.54 2

Low Gain 12.7 3.4

14.12 17.2

Table 3. TQ3131_5131 System Performance

TQ5131

Data Sheet

For additional information and latest specifications, see our website: www.triquint.com

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