Philips TDA8730 Datasheet

INTEGRATED CIRCUITS

DATA SH EET

TDA8730

PLL FM demodulator for DBS
signals

Preliminary specification
File under Integrated Circuits, IC02

March 1991

Philips Semiconductors Preliminary specification

PLL FM demodulator for DBS signals TDA8730

FEATURES

• Broadband IF amplifier

• PLL demodulator, consisting of:

– a multiplier
– a voltage controlled oscillator
– a loop amplifier

GENERAL DESCRIPTION

The TDA8730 is a sensitive PLL
demodulator for the second IF and
direct broadcasting satellite (DBS)
receivers. It provides AGC output and
threshold adjustment for optimal signal
level at the input of the demodulator.

• AGC detector and DC amplifier

• LOW impedance video and data output

• Power supply voltage stabilizer

QUICK REFERENCE DATA

SYMBOL PARAMETER CONDITIONS MIN. TYP. MAX. UNIT

V
I
V
f
f

V
V

DD

DD

I
osc
osc

O

AGC

supply voltage − 9 − V
supply current − 75 − mA
input voltage level − 70 − dBµV
minimum oscillator frequency − 130 − MHz
maximum oscillator frequency − 720 − MHz
video output signal amplitude (peak-to-peak

value)
AGC output voltage 1.8 − V

note 1 − 1.1 − V

DD

V

Note

1. ∆f = 13.5 MHz (peak-to-peak value)

ORDERING AND PACKAGE INFORMATION

EXTENDED TYPE

NUMBER

PINS PIN POSITION MATERIAL CODE

PACKAGE

TDA8730 16 DIL plastic SOT38GE

Note

1. SOT38-1; 1996 December 4.

(1)

March 1991 2

Philips Semiconductors Preliminary specification

PLL FM demodulator for DBS signals TDA8730

PINNING

SYMBOL PIN DESCRIPTION

AGCO 1 AGC output
AGCFC 2 AGC frequency compensation
OSCIN1 3 oscillator input 1
GND 4 GND
OSCIN2 5 oscillator input 2
GND1 6 ground 1
VDO 7 variable capacitor drive output
FI 8 feedback input
VO 9 video output
GND2 10 ground 2
SDN 11 stabilizer decoupling node

Fig.1 Pinning diagram.

V

DD

RFIN2 13 RF input 2
RFIN1 14 RF input 1
RFGND 15 RF ground
AGCTS 16 AGC threshold setting

12 supply voltage +9V

APPLICATIONS

Direct broadcasting satellite (DBS) receivers.

March 1991 3