TA1284 View Datasheet(PDF) - Toshiba

Part Name

Description

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TA1284

UHF / VHF TUNER IC (Low Phase Noise Oscillator)

Toshiba 

TA1284FN

TEST CONDITIONS

Note 1:

Note 2:

Note 3:

Note 4:

Note 5:

Note 6:

Note 7:

Note 8:

Note 9:

Conversion Gain

fRF input level = −30 dBmW

Noise Figure

Noise Figure meter used.

IF Out Power Level

Measure IF output level when it is maximum level.

Conversion Gain Shift

The Conversion gain shift is defined as a change in conversion gain when supply voltage varies from

VCC = 5 to 4.5 V or from VCC = 5 to 5.5 V.

Frequency Shift

The frequency shift is defined as a change in oscillator frequency when the supply voltage varies

from VCC = 5 to 4.5 V or from VCC = 5 to 5.5 V.

Switching On Drift

Measure frequency change from 2 seconds after switching on to 3 minutes.

1% Cross Modulation

· fd = fp (fdRF input level = −30 dBmW)

· fud = fp+12 MHz 100 kHz, 30%AM

Input two signals, and increase the fudRF input level.

Measure the fudRF input level when the suppression level reaches 56.5 dB.

Inter Modulation

· fd = fp

· fud = fp+1 MHz

Input the two signals above, and increase the input levels.

When the IF output level is −11 dBmW, measure the suppression level.

Phase Noise (10 kHz offset)

Measure phase noise of 10 kHz offset.

2003-02-06 6/9

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