June 1994

7

Philips Semiconductors

Product specification

Quasi-split sound processor for all standards

TDA3858

CHARACTERISTICS

10% residual carrier).

VC/SC2 = 20 dB. Sound carriers (SC1, SC2) modulated with f = 1 kHz and deviation

∆f = 50 kHz, unless otherwise

specified.

SYMBOL

PARAMETER

CONDITIONS

MIN.

TYP.

MAX.

UNIT

supply voltage (pin 27)

pin 28 not

connected

4.5

5

8.8

V

supply voltage (pin 28)

pin 27 not

connected

10.8

12

13.2

V

supply current (pin 27)

48

60

72

mA

IF source control (pin 6)

input voltage in order to obtain

standards

B/G (FM) with automatic muting

pin 6 connected

2.8

−

V

pin 6 open-circuit

−

2.8

−

V

B/G (FM) without muting

pin 6 connected or

alternative

measure: 22 k

Ω to

GND

1.3

−

2.3

V

L(AM sound)

pin 6 connected

0

−

0.8

V

input current

−−

100

µA

−−

−300

µA

maximum input voltage (pin 6)

supply at pin 28

−−

5.5

V

IF input not activated (pins 1-2 or 31-32)

input resistance

−−

100

Ω

DC input voltage (pins 1, 2 or 31, 32) LOW set internally

−−

0.1

V

α

16-17

crosstalk attenuation of IF input

switch

note 1

50

56

−

dB

IF amplifier (pins 1-2 or 31-32)

input resistance

1.8

2.2

−

k

Ω

input capacitance

−

2.0

2.6

pF

DC potential, voltage (pins 1, 2, 31,

32)

−

1.75

−

V

maximum input signal (RMS value)

70

100

−

mV

input signal sensitivity B/G standard

(RMS value, pins 31-32)

−3 dB intercarrier

signal reduction at

pin 23

−

70

100

µV

input signal sensitivity L standard

(RMS value, pin 1-2)

−3 dB intercarrier

signal reduction at

pin 11

−

70

100

µV