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TDA7212
LOW VOLTAGE FM XTAL CONTROLLED FRONT-END
. . . . .
ADVANCE DATA
RF PREAMPLIFIER BALANCED MIXER XTAL CONTROLLED OSCILLATOR (fundamental and overtone) LOW OSCILLATOR RADIATION HIGH SIGNAL HANDLING
DIP8 (Plastic Package) ORDER CODE : TDA7212
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.
PIN CONNECTIONS
RF INPUT SUPPLY VOLTAGE RF TUNING GND 1 2 3 4 8 7 6 5 SUP PLY VOLTAGE XTAL OSC ILLATOR IF OUTPUT
7 212-01.EPS
BLOCK DIAGRAM
+V S
OUT 3
RL = 300
2 REF RF IN 1
5
7 4 8 6
XTAL
+V S
7 212-02.EPS
August 1992
1/4
This is advance info rmation on a new product now in development or undergoing evaluation. Details are subject to change without notice.
TDA7212
ABSOLUTE MAXIMUM RATINGS
Symbol
VS P tot T oper T stg , Tj Supply Voltage Total Power Dissipation a t Tamb < 70oC Operating Tem pera ture Storage and Junction Temperature
Parameter
Value
7 400 -20 , +85 -40, +150
Unit
V mW
o o
C C
Symbol
R th (j-a)
Parameter
Junction-am bient Thermal Resistance Max.
Value
200
Unit
o
C/ W
ELECTRICAL CHARACTERISTICS o (VS = 3V, Tamb = 25 C unless otherwise specified - Refer to the Test Circuit)
Symbol
VS IS VOSC G V off
Parameter
Supply Voltage Supply Current Local Oscillator Voltage (Pin 6) Voltage Gain Local Oscillator Stop Voltage
Test Conditions
Min.
Typ.
3 3 200
Max.
6
Unit
V mA mV RMS dB V
7212-03.TBL 7212-04.TBL
f = 49MHz, RIN = 75, ROUT = 300
40 1.2
TYPICAL DC VOLTAGES (Refer to the Test Circuit)
Pins
(V) 2.3
1
2
3
3
3
4
0
5
3
6
2.1
7
2.9
8
3
TEST CIRCUIT
C2 22nF C3 22nF C6 15pF L2 C7 39pF L3 +V S C5 22nF
XTAL 39.16 MHz
C4 47pF 2 C1 2.2nF 1 3 6 7 8
FM2 OUT 10.7MHz 5
IN 49.86kHz
TDA7212
4
L2 = L3 = TOKO E521LN 110033
7212-03.EPS
2/4
7212-02.TBL
THERMAL DATA
7212-01.TBL
TDA7212
FRONT-END CORDLESS APPLICATION
22nF 22nF 1 18pF 49MHz IN 2 3 2 3 6 L2 39pF L3 47pF 7 8 15k 300 15pF L1 390pF 1 5 FM2 SFE 10.7 OUT 38.3 MHz +V S 22nF
3.3pF
TDA7212
4
L1 = L3 = TOKO E521LN 110033
7212-04 NB. : In this application it is advisable to decrease the gain of the front-end through a tapping on the L2 coil (3 turns of 12). So it can be obtained: better selectivity, improve d intermodulation performance, better match ing with the following block that are IC's design ed for double conversion radio receivers.
3/4
TDA7212
PACKAGE MECHANICAL DATA 8 PINS - PLASTIC DIP
e4
A a1
L
I
b1
B b e3 Z D
B1 e Z E
8
5
1
4
F
PM-DIP8.EPS
Dimensions
A a1 B b b1 D E e e3 e4 F i L Z
Min.
0.51 1.15 0.356 0.204 7.95
Millimeters Typ.
3.32
Max.
Min.
0.020
Inches Typ.
0.131
Max.
1.65 0.55 0.304 10.92 9.75 2.54 7.62 7.62 6.6 5.08
0.045 0.014 0.008 0.313 0.100 0.300 0.300
0.065 0.022 0.012 0.430 0.384
3.18
3.81 1.52
0.125
0.150 0.060
(c) 1992 SGS-THOMSON Microelectronics - A ll Rights R eserved SGS-THOMSON Microelectronics GROUP OF C OMPANIES Australia - Brazil - China - France - Germa ny - Hong Kong - Italy - Japan - K orea - Malaysia - Malta - Morocco The Netherlands - Singapore - Spain - Sw eden - Switzerland - Taiwan - U nited Kingdo m - U .S.A.
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ORDER CODE :
Information furnished is believed to be accurate and reliable. However, S GS-THOMSON Microelectronics assumes no responsibility for the consequences of use of such information nor for any infringement of patents or other rights of third parties which may result from its use. N o licence is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. S pecifica tions mentioned in this publication are subject to change without notice. This publication supe rsedes and replaces all inform ation previously supplied. SGS-TH OMSON Microelectronics products are not authorized for use as critical components in life s upport devices or systems without express written approval of S GS-THOMSON Microelectronics.
DIP8.TBL
0260 0.200

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