TDA7786 datasheet(36/54 Pages) STMICROELECTRONICS

36 / 54 page

Electrical specifications

TDA7786, TDA7786M

36/54

DocID026122 Rev 5

Distortion

Deviation= 75 kHz

0.05

0.1

Max deviation

THD=3%

150

166

kHz

Adjacent channel Selectivity

(D/U ratio)

∆F =100 kHz, SINAD=30 dB

Desired 40 dBµV,

dev = 40 kHz, 400 Hz

undesired Dev=40 kHz,

1kHz

Alternate Channel Selectivity

(D/U ratio)

∆F = 200 kHz, SINAD=30 dB

Desired 40 dBµV,

dev = 40 kHz, 400 Hz

undesired Dev=40 kHz,

1kHz

Max. Strong Signal Interferer

(D/U ratio)

Desired = 40 dBµV

SINAD = 30 dB

Undesired

F = 1MHz

3 signal performance

(“wide-band”) application

Desired = 40 dBµV, dev =

40 kHz, 400 Hz,

SINAD = 30 dB

Undesired1 = ± 400 kHz,

dev = 40 kHz, 1 kHz

Undesired2 = ± 800 kHz, no

mod

101

106

dBµV

Desired = 40 dBµV,

dev = 40 kHz, 400 Hz,

SINAD = 30 dB

Undesired1 = ±1 MHz,

dev = 40 kHz, 1 kHz

Undesired2 =±2MHz, no mod

105

110

dBµV

AM suppression

m= 30 %

Logarithmic field strength

indicator

@40 dBµV

read “FM_Smeter_log”

-0.41

(equiva

lent to

dBµV)

-0.38

-0.35

(equiv

alent

to 43

dBµV)

Table 26. FM overall system performance (continued)

Parameter

Test condition

Min

Typ

Max

Units

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