TDA7529_11 datasheet(23/61 Pages) STMICROELECTRONICS

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TDA7529

Electrical specifications

Doc ID 13311 Rev 4

23/61

Vnoise_input 1 IN1 input noise voltage

@ source impedance 330

Ω ·

noiseless, @31dB gain

-3.5

4.2

nV/

√Hz

Vnoise_input 2 IN2 input noise voltage

@ source impedance 470

Ω ·

noiseless, @ 31dB gain, with

external 560

Ω input

termination resistor

-3.8

4.6

nV/

√Hz

Vnoise_input 3 IN3 input noise voltage

@ source impedance 2.2k

Ω ·

noiseless, @ 29dB gain, with

external 2.7k

Ω input

termination resistor

-5

6.5

nV/

√Hz

Vnoise_input 4 IN4 input noise voltage

@ source impedance 2.2k

Ω ·

noiseless, @ 24dB gain, with

external 2.7k

Ω input

termination resistor

-7

8.5

nV/

√Hz

IF AGC

External capacitance for time constant from 10nF to 500nF in FM (asym. mode), from 100nF to 4700nF in AM (sym. mode)

– time constant values are directly proportional to the external capacitor value

Lthr

IFAmp input referred

FM, min. setting

88.5

93.5

dBµV

FM, max setting

99.5

101

103.5

AM, min. setting

86.5

91.5

AM, max setting

96.5

101.5

Threshold steps

1.5

Fast attack mode in AM-

mode, range

active in case of overdrive

0.05

0.5

Time constant attack,

range

FM: asym. mode U1

FM: asym. mode U2

AM: sym. mode S1

AM: sym. mode S2

10-500

0.05-2.5

2.0-100

20-1000

µs

Time constant decay,

range

FM: asym. mode U1 / U2

AM: sym. mode S1

AM: sym. mode S2

2-100

20-1000

Table 13.

IF - section (continued)

Symbol

Parameter

Test condition, comments

Min

Typ

Max

Units

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