TDA1220B datasheet(3/18 Pages) STMICROELECTRONICS

3 / 18 page

Symbol

Parameter

Test conditions

Min.

Typ.

Max.

Unit

Supply voltage

Drain current

AM SECTION (fo = 1 MHz; fm = KHz)

Input sensitivity

S/N = 26 dB

m = 0.3

µV

S/N

Vi = 10 mV

m = 0.3

AGC range

∆Vout = 10 dB

m = 0.8

100

Recovered audio signal

(pin 9)

Vi = 1 mV

m = 0.3

130

200

Distortion

Vi = 1 mV

m = 0.3

0.4

m = 0.8

1.2

Max input signal handling

capability

m = 0.8

d < 10%

Input resistance between

pins 2 and 4

m = 0

7.5

Ω

Input capacitance between

pins 2 and 4

m = 0

Output resistance (pin 9)

4.5

9.5

Ω

Tweet 2 IF

m = 0.3

Vi = 1 mV

Tweet 3 IF

FM SECTION (fo = 10.8 MHz; fm = 1 KHz)

Input limiting voltage

-3 dB limiting point

µV

AMR

Amplitude modulation

rejection

∆f = ±22.5 KHz

Vi = 3 mV

m = 0.3

S/N

Ultimate quieting

∆f = ±22.5 KHz

Vi = 1 mV

Distortion

∆f = ±75 KHz

Vi = 1 mV

0.7

1.5

Distortion

∆f = ±22.5 KHz

Vi = 1 mV

0.25

0.5

Distortion (double tuned)

0.1

Recovered audio signal

(pin 9)

∆f = ±22.5 KHz

Vi = 1 mV

110

140

Input resistance between

pin 16 and ground

6.5

Ω

Input capacitance between

pin 16 and ground

Output resistance (pin 9)

4.5

9.5

Ω

ELECTRICAL CHARACTERISTICS ( Tamb = 25

°C, Vs = 9V unless otherwise specified, refer to test circuit)

3/18

TDA1220B

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