TDA7705 datasheet(37/42 Pages) STMICROELECTRONICS

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TDA7705

Weak signal processing

Doc ID 15938 Rev 9

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5.2.3

High cut control

Table 35.

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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