SGS Thomson Microelectronics TDA7212 Datasheet

TDA7212

LOW VOLTAGE FM XTAL CONTROLLED FRONT-END

August 1992

ADVANCE DATA

1
2
3
4

8
7
6
5

RF INPUT

SUPPLY VOLTAGE

RF TUNING

GND

SUPPLY VOLTAGE
XTAL
OSCILLATOR
IF OUTPUT

7212-01.EPS

PIN CONNECTIONS

DIP8

(Plastic Package)

ORDER CODE : TDA7212

.

RF PREAMPLIFIER

.

BALANCED MIXER

.

XTAL CONTROLLED OSCILLATOR (funda­mental and overtone)

.

LOW OSCILLATOR RADIATION

.

HIGH SIGNAL HANDLING

DESCRIPTION

The TDA7212 is a monolithic integrated circuit in a
8 pin minidip package designed for general pur­pose XTAL controlled FM front-end up to 140MHz.

2

3

468

REF

1

5

7

XTAL

+V

S

OUT

L

R=300Ω

+V

S

RF IN

7212-02.EPS

BLOCKDIAGRAM

This is advance information on a new product now in development or undergoing evaluation. Details are subject to change without notice.

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ABSOLUTEMAXIMUM RATINGS

Symbol Parameter Value Unit

V

S

Supply Voltage 7 V

P

tot

Total Power Dissipation at T

amb

<70oC400mW

T

oper

Operating Temperature -20 , +85

o

C

T

stg,Tj

Storage and Junction Temperature -40, +150

o

C

7212-01.TBL

THERMALDATA

Symbol Parameter Value Unit

R

th (j-a)

Junction-ambient Thermal Resistance Max. 200

o

C/W

7212-02.TBL

ELECTRICAL CHARACTERISTICS

(VS=3V,T

amb

=25oC unless otherwise specified - Refer to the Test Circuit)

Symbol Parameter Test Conditions Min. Typ. Max. Unit

V

S

Supply Voltage 3 6 V

I

S

Supply Current 3 mA

V

OSC

Local Oscillator Voltage (Pin 6) 200 mV

RMS

G Voltage Gain f = 49MHz, RIN=75Ω,R

OUT

= 300Ω 40 dB

V

off

Local Oscillator Stop Voltage 1.2 V

7212-03.TBL

TYPICAL DC VOLTAGES (Refer to the Test Circuit)

Pins12345678

(V) 2.3 3 3 0 3 2.1 2.9 3

7212-04.TBL

4

8

1

5

7

+V

S

6

C7

39pF

L3

C3

22nF

L2

C6

15pF

C2 22nF

23

XTAL

39.16
MHz

C4 47pF

C1

2.2nF

IN

49.86kHz

C5

22nF

FM2

OUT

10.7MHz

TDA7212

L2 = L3 = TOKO E521LN 110033

7212-03.EPS

TEST CIRCUIT

TDA7212

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