TDA7786 datasheet(49/54 Pages) STMICROELECTRONICS

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DocID026122 Rev 5

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TDA7786, TDA7786M

Weak signal processing

5.2.3

High cut control

Table 45. High cut control - continuous set

Symbol

Parameter

Test condition

Min

Typ

Max

Units

HCFSsp

Start point vs. field strength

minimum RF level for widest

HC filter (filter # 7)

no multipath present

040

dBµV

HCFSep

End point vs. field strength

maximum RF level for

narrowest HC filter (filter # 0)

no multipath present

030

dBµV

HCFStW2N

Field strength-related

transition time from wide to

narrow band

Vrf step-like variation from

60 dBµV to 10 dBµV

0.001

0.2

HCFStN2W

Field strength-related

transition time from narrow to

wide band

Vrf step-like variation from

0 dBµV to 60 dBµV

0.001

HCmaxBW

Maximum cut-off frequency of

high cut filter bank

Filter #7, -3 dB response

frequency, input signal with

pre-emphasis

HCmin

kHz

HCminBW

Minimum cut-off frequency of

high cut filter bank

Filter #0, -3 dB response

frequency, input signal with

pre-emphasis

HCma

xBW

kHz

HCnumFilt Number of discrete HC filters -

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