EVB3020A-IFBD データシートの表示（PDF） - Agere -> LSI Corporation

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EVB3020A-IFBD

GSM Multiband RF Transceiver

Agere -> LSI Corporation 

Advance Data Sheet

December 1999

W3020 GSM Multiband RF Transceiver

Modulator

The modulator uses an indirect I/Q modulator architecture that is ideal for multiband operation. The IF

modulation improves EVM effects due to improved carrier feedthrough. The series transmit IF filters allow

improved wideband noise, which enables duplexer removal. The I/Q modulator requires no amplitude or phase

calibration to achieve high phase accuracy. The modulator can be altered between GSM900 transmit mode (TX

IF = 270 MHz) and GSM1800/1900 transmit mode (TX IF = 180 MHz) by the band bit setting in the TR register.

Table 8. Modulator Performance

VDD = 2.7 V; TA = 25 °C ± 3 °C. IQ common mode = 1.6 V; input differential signal = 1.0 Vp-p.

Parameter

I/Q Signal Path Bandwidth

I/Q Input Resistance to Ground

I/Q Input Capacitance to Ground

I/Q Input Resistance (differential)

I/Q Input Capacitance (differential)

I/Q Common-mode Range

I/Q Input Differential Signal for Max Output

RF Output Band:

GSM900

GSM1800

GSM1900

Output Power:

GSM900 (LO1 at 1167 MHz)

GSM1800 (LO1 at 1567 MHz)

Powerup Time*

RMS Phase Accuracy†:

GSM900

GSM1800

GMSK Modulation Spectrum (max) (offset from carrier):

100 kHz

@30 kHz RBW

200 kHz

250 kHz

400 kHz

1.8 MHz—3.0 MHz @100 kHz RBW

3.0 MHz—6.0 MHz

>6.0 MHz

Wideband Noise IF Modulator

GSM900:

|f – f0| ≥ 10 MHz

|f – f0| ≥ 20 MHz (PM)

GSM1800:

|f – f0| ≥ 20 MHz (PM)

Wideband Noise RF Mixer (See Figure 6.):

GSM900:

|f – f0| ≥ 10 MHz

|f – f0| ≥ 20 MHz (PM)

GSM1800:

|f – f0| ≥ 20 MHz (PM)

Min

—

25

—

10

—

1.5

0.8

880

1710

1850

–4.5

–4

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

—

Typ

Max

450

—

—

—

—

10

—

—

—

10

—

VDD – 1.05

1

1.2

—

915

—

1785

—

1910

0

6

0

6

—

4

2.0

—

2.5

—

—

0.5

—

–30

—

–33

—

–60

—

–65

—

–65

—

–73

–140

—

–140

—

–140

—

–154

—

–154

—

–153

—

* From the programming latch going high to power available at RF output, Including TX IF filter group delay.

† Including contributions from LO1, LO2, and modulator.

Unit

kHz

kΩ

pF

kΩ

pF

V

Vp-p

MHz

MHz

MHz

dBm

dBm

µs

°rms

°rms

dBc

dBc

dBc

dBc

dBc

dBc

dBc

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

dBc/Hz

Lucent Technologies Inc.

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