TDA7705TR datasheet(23/42 Pages) STMICROELECTRONICS

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TDA7705

Electrical specifications

Doc ID 15938 Rev 9

23/42

3.5

Overall system performance

All measurements obtained with application of Figure 16 (FM tuned application / SPI

control) unless otherwise specified.

3.5.1

FM overall system performance

Antenna level equivalence: 0 dBµV = 1 µVrms (Antenna terminal voltage with 50  source).

Figure 10.

FM input set-up

Input level referred to signal generator loaded with 50

 (V

rf, node 'A'); no antenna dummy;

AM input not connected. Frf = 98.1 MHz, Vrf = 60 dBµV, mono modulation, fdev = 40 kHz,

faudio = 1 kHz. De-emphasis = 50 µs. Unless otherwise specified

Table 17.

FM overall system performance

Parameter

Test condition

Min

Typ

Max

Units

Tuning range FM Eu

(can be modified by the user)

(automatic FE alignment

available)

87.5

108

MHz

Tuning step FM Eu

(can be modified by the user)

100

kHz

Tuning range FM US

(can be modified by the user)

(automatic FE alignment

available)

87.5

107.9

MHz

Tuning step FM US

(can be modified by the user)

200

kHz

Tuning range FM Jp

(can be modified by the user)

(automatic FE alignment

available)

MHz

Tuning step FM Jp

(can be modified by the user)

100

kHz

Tuning range FM EEu

(can be modified by the user)

(automatic FE alignment not

available)

MHz

Tuning step FM EEu

(can be modified by the user)

100

kHz

Sensitivity

S/N =26dB

-7

-4

dBµV

S/N

@ 10 dBµV, no highcut, DISS

BW = #3

-55

Ultimate S/N

@ 60 dBµV, mono

@ 60 dBµV,

Deviation = 75 kHz, mono

@ 60 dBµV, stereo

Vrf + 6dB

PCB

UNDER

TEST

Vrf + 6dB

Vrf

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