TDA7546 View Datasheet(PDF) - STMicroelectronics

Part Name

Description

Manufacturer

TDA7546

Multichip module for TMC tuner applications

STMicroelectronics 

TDA7546

Electrical specification

Table 5.

Tuner (continued)

(Tamb = -40 to +85°C, VCC1 = VCC2 = VCC3 = VCCVCO = VCCMIX1 = VCCIF1=8.5V,

fRF = 98.1MHz, dev. = 40KHz, fMOD = 1KHz, fIF1 = 10.7MHz, fIF2 = 450KHz,

fXtal = 10.25MHz, in application circuit, unless otherwise specified.)

Symbol

Parameter

Test Conditions

Min. Typ. Max. Unit

VOUT

ROUT

|ΔV|min

|ΔV|max

Output Voltage

Output resistance

DC offset fine adjust

DC offset fine adjust

QUALITY DETECTION

dev. = 75kHz

DEM, MENA=1

DEM, MENA=1

400 500 600 mVrms

15

40

65

Ω

8.5

mV

264

mV

S-meter, Unweighted Fieldstrength

Fieldstrength output

V14

Fieldstrength output

voltage per decade

ΔV14

voltage per decade

S-meter offset

ROUT Output resistance

S-meter, Weighted Fieldstrength

Fieldstrength output

V35

Fieldstrength output

ROUT Output resistance

Adjacent Channel Output

Output voltage low

V13

Output voltage high

ROUT Output resistance

Multipath Output

Output voltage low

V34

Output voltage high

ROUT Output resistance

ISS (Intelligent Selectivity System)

V46 = 0VRMS

V46 = 1VRMS

SMSL = 0

SMSL = 1

SL, SMSL=1

V46 = 0VRMS

V46 = 1VRMS

0.1

V

4.9

V

0.75

1

1.25

V

1.1

1.5

1.9

V

-15

15

dB

300 450 650

Ω

2.5

V

4.9

V

12 13.5 15

kΩ

0.1

0.2

V

4.4

4.9

V

3.5

4.5

5.5

kΩ

0.1

0.2

V

4.4

4.9

V

2

3.5

5

kΩ

Filter 450KHz

fcentre Centre frequency

BW 3dB Bandwidth, -3dB

BW 20dB Bandwidth, -20dB

BW 3dB Bandwidth, -3dB

BW 20dB Bandwidth, -20dB

fREF_intern = 450KHz

ISS80 = 1

ISS80 = 1

ISS80 = 0

ISS80 = 0

450

KHz

70

80

80 KHz

135 150 165 KHz

105 120 135 KHz

220 250 280 KHz

15/68

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