Datasheet TBA120T Datasheet (TEMIC)

TELEFUNKEN Semiconductors

FM IF amplifier and demodulator

Technology: Bipolar Features

 Input and demodulator provided for operating with

ceramic-resonators

 No selection of volume-input characteristics
 Independent sound output for VTR and headphone

Case: 14 pin dual inline plastic

 Additional sound input
 High ripple rejection
 High residual carrier suppression prevents harmonic

TBA120T

distortions

Pin Configuration

Pin Symbol Function

1 GND Ground

2, 13 Feedback

3 V
4 V
5 V

Rev . A1: 20.12.1994

i(AF)
ref
5

AF input – SCART
Reference voltage
Volume control

Figure 1 Block diagram

Pin Symbol Function

6,7,9,10 FM demodulator filter

8 V
11 V
12 V
14 V

o(AF)1

S
o(AF)2
i(IF)

AF output – controlled
Supply voltage
AF output – uncontrolled
IF input

1

TBA120T

TELEFUNKEN Semiconductors

Absolute Maximum Ratings

Reference point pin 1, unless otherwise specified

Parameters Symbol Value Unit
Supply voltage Pin 11 V
Volume setting voltage Pin 5 V
Reference supply current Pin 4 I
Power dissipation T

= 60°C P

amb

Ambient temperature range T
Storage temperature range T

S
5

Ref

tot

amb

stg

18 V

6 V
5 mA

400 mW

–15 to +70 °C

–25 to +125 °C

Electrical Characteristics

T

= +25°C, VS = 12 V, f = 5.5 MHz, Figure 3, reference point pin 1, unless otherwise specified

amb

Parameters Test Conditions / Pins Symbol Min. Typ. Max. Unit
Supply voltage range Pin 11 V
Supply current Pin 11 I
Reference voltage Pin 4 V
Output resistance Pin 4 r

S

S
oRef
Ref

Frequency range f 0 to 12 MHz
IF voltage gain Pin 6/14 G
Limited IF output voltage Pin 6 – 10 V

IF

o(IF)pp

Input limiting voltage f = 50 kHz,

f

= 1 kHz Pin 14 V

mod

Input impedance Pin 14 R

AM rejection m = 30 %, f = 50 kHz,

V

= 500 V, f

i

mod

= 1 kHz

DC voltage at AF output Vi = 0 Pin 8

Pin 12

Ripple rejection Pin 11/8

Pin 11/12

k

V

o(AF)1

V

o(AF)2

k
k

i(IF)

C

AM

Br
Br

i
i

IF residual voltage without de-emphasis

AF output voltage V

capacitor Pin 8

Pin 12

= 10 mV,

i

V

o(IF)1

V

o(IF)2

f =50 kHz,
f

= 1 kHz, R

mod

Output resistance Pin 8, 12 r
AF voltage amplification R
AF damping R

= 20 k, Pin 8/3 G

5

= 13 k, Fig. 3 Pin 8 –G

5

Volume setting range Pin 8 V
Input resistance Pin 3 r

= 20 k

5

Pin 8
Pin 12

V

o(AF)1

V

o(AF)2

o

v1

v1

o(AF)1

i

Mute function

Switching current

Pin 2 or 13

Switching voltage Figure 2 V

I

sw

mute

10 18 V

9.5 17.5 mA

4.2 4.8 5.5 V
12 

68 dB

250 mV

30 60 V

800

5



pF

50 60 dB

4

5.6
35

V
V

dB

30

20

mV

30

650
400

900
650

mV
mV

1.1 k

7.5 dB

24 30 34 dB
70 85 dB

2 k

400 A

3 V

2

Rev . A1: 20.12.1994

TELEFUNKEN Semiconductors

TBA120T

Figure 2

Rev . A1: 20.12.1994

Figure 3 Test circuit

3

TBA120T

Dimensions in mm

Package: JEDEC MO 001, DIP 14-leads

TELEFUNKEN Semiconductors

We reserve the right to make changes to improve technical design without further notice.

Parameters can vary in different applications. All operating parameters must be validated for each customer

application by the customer. Should the buyer use TEMIC products for any unintended or unauthorized application,

the buyer shall indemnify TEMIC against all claims, costs, damages, and expenses, arising out of, directly or

indirectly , any claim of personal damage, injury or death associated with such unintended or unauthorized use.

TEMIC TELEFUNKEN microelectronic GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany

Telephone: [phone], Fax Number: 49 (0)7131 67 2423

4

Rev . A1: 20.12.1994