MC33169 Просмотр технического описания (PDF) - Motorola => Freescale

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производитель

MC33169

GaAs Power Amplifier Support IC

Motorola => Freescale 

MC33169

CURVES RELATED TO APPLICATION GSM CLASS 4

Figure 12. RF Output Voltage (40 Hz/95% AM) and

VTx Driving Voltage

Output RF

Voltage

0V

Figure 13. Idle, PA Drain, RF Output and VO

Voltages During a Burst Period

Idle Voltage

VTx

VTx

–50 ms

–25 ms

TIMEBASE = 5.0 ms/DIV

VERTICAL SCALE = 0.5 V/DIV

VT

–0 V

0s

0V

0V

Negative

Voltage

–350 µs

Output RF Voltage

150 µs

TIMEBASE = 5.0 µs/DIV

VERTICAL SCALE = 0.5 V/DIV

VO

850 µs

Figure 14. RF Output Voltage, PA Drain Voltage

and VTx Driving Voltage, During Fall Time

Figure 15. RF Output Voltage, PA Drain Voltage and

VTx Driving Voltage, During Rise Time

VTx

VTx

–13.4 µs

11.6 µs

TIMEBASE = 5.0 µs/DIV

VERTICAL SCALE = 0.5 V/DIV

PA Drain

Voltage

Output

RF Voltage

36.6 µs

–13.4 µs

11.6 µs

VERTICAL SCALE = 0.5 V/DIV

PA Drain

Voltage

Output

RF Voltage

36.6 µs

MOTOROLA ANALOG IC DEVICE DATA

9

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