TDA1220 datasheet(16/18 Pages) STMICROELECTRONICS

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ELECTRICAL CHARACTERISTICS (Vs = 12V)

AM Section (fo = 39MHz; fm = 15KHz)

Parameter

Typ

Unit

Audio out (m = 0.3)

S/N (Vi = 100 mV;

m = 0.3)

S/N (Vi = 1mV;

m = 0.3)

S/N (Vi = 10mV;

m = 0.3)

AGC range (m = 0.8,

∆Vout = 3dB)

Max input signal handling (m = 0.8; d = 5%)

150

– 3dB bandwidth

600

KHz

Distortion (Vi = 100

µV;

m = 0.3)

(Vi = 1mV;

m = 0.3)

(Vi = 10mV;

m = 0.3)

0.8

(Vi = 100

µV;

m = 0.8)

(Vi = 1mV;

m = 0.8)

(Vi = 10mV;

m = 0.8)

FM Section (fo = 5.5MHz; fm = 1KHz)

Parameter

Typ

Unit

–3dB input limiting voltage

(

∆f = 25KHz)

µV

AMR

(

∆f = +25KHz;

m = 0.3;

Vi = 100

µV)

(

∆f = +25KHz;

m = 0.3;

Vi = 1mV)

(

∆f = +25KHz;

m = 0.3;

Vi = 10mV)

S/N

(

∆f = ±25KHz;

Vi = 100

µV)

S/N

(

∆f = ±25KHz;

Vi = 1 mV)

S/N

(

∆f = ±25KHz;

Vi = 10mV)

Distortion

(

∆f = ±25KHz;

Vi = 100

µV)

0.5

(

∆f = ±25KHz;

Vi = 1 mV)

0.6

(

∆f = ±25KHz;

Vi = 10 mV)

0.6

(

∆f = ±50KHz;

Vi = 100

µV)

(

∆f = ±50KHz

Vi = 1mV)

(

∆f = ±50KHz;

Vi = 10mV)

Recovered audio (

∆f = ±15KHz; Vi = 1 mV)

Recovered audio can be varied by variation of 3.3K ohm resistor in parallel with

the discriminator coil)

Max input signal handling

Note: AM performance at 39MHz can be improved by mean of a selective preamplifier stage.

TDA1220B

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