TDA7786 datasheet(39/54 Pages) STMICROELECTRONICS

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TDA7786, TDA7786M

Electrical specifications

3.5.3

AM LW overall system performance

Antenna level equivalence: 0 dBµV = 1 µVrms

Figure 21. AM LW input set-up

Level referred to SG EMF output before antenna dummy; dummy antenna load as shown

above Frf =216 kHz, Vrf =74 dBµV, mod = 30 %, faudio = 400 Hz, unless otherwise specified.

3.5.4

AM SW overall system performance

Antenna level equivalence: 0 dBµV = 1 µVrms

Figure 22. AM SW input set-up

Level referred to SG EMF output before antenna dummy; dummy antenna load as shown

above; Frf = 6000 kHz, Vrf =74 dBµV, mod = 30 %, faudio = 400 Hz, unless otherwise

specified.

Table 28. AM LW overall system performance

Parameter

Test condition

Min

Typ

Max

Units

Tuning range LW

(can be modified by the user)

144

288

kHz

Tuning step LW

(can be modified by the user)

kHz

Sensitivity

S/N = 20 dB

dBµV

Ultimate S/N

@ 80 dBµV

AGC F.O.M.

Ref. = 74 dBµV

-10dB drop point

(1)

1. Programmable by software parameters.

Distortion

M= 80 %

0.1

0.2

Image rejection

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