TDA6404 View Datasheet(PDF) - Philips Electronics

Part Name

Description

MFG CO.

TDA6404

5 V mixer/oscillator-PLL synthesizers for hyperband tuners

Philips Electronics 

Philips Semiconductors

5 V mixer/oscillator-PLL synthesizers for

hyperband tuners

TEST AND APPLICATION INFORMATION

Product specification

TDA6404; TDA6405;

TDA6405A

handbook, full pagewidth

signal

50 Ω source

VHFIN IFOUT1

e

Vmeas V

50 Ω

Vi

D.U.T.

Vo

IFOUT2

RMS

voltmeter

T

(1)

N1

C

(2)

N2

V'meas

spectrum

analyzer

50 Ω

MGK828

(1) N1 is 2 × 5 turns

(2) N2 is 2 turns

Zi >> 50 Ω ⇒ Vi = 2 × Vmeas; Vi = 80 dBµV

Vo = V’meas + 16 dB (transformer ratio NN-----12-- = 5 and transformer loss)

Gv = 20 log -VV----o-i

Fig.4 Voltage gain (Gv) measurement in the VHF band.

signal

handbook, full pagew5id0thΩ source

A

C

e

Vmeas V

50 Ω Vi HYBRID

RMS 50 Ω

voltmeter

B

D

UHFIN1 IFOUT1

D.U.T.

Vo

UHFIN2 IFOUT2

T

(1)

N1

C

(2)

N2

V'meas

spectrum

analyzer

50 Ω

MGK829

(1) N1 is 2 × 5 turns

(2) N2 is 2 turns

Vi = Vmeas; Vi = 70 dBµV

Vo = V’meas + 16 dB (transformer ratio NN-----12-- = 5 and transformer loss)

Gv = 20 log -VV----o-i + 1 dB (1 dB = correction for hybrid loss)

Fig.5 Voltage gain (Gv) measurement in the UHF band.

1999 Jan 13

15

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