TDA12011H/N1F0B中文资料应用文章市场行情现货热卖使用介绍-中国IC网-芯三七

TDA1220B

AM-FM QUALITY RADIO

The TDA1220B is a monolithic integrated circuit in

a 16-lead dual in-line package.

It is intended for quality receivers produced in large

quantities.

DIP-16 Plastic

The functions incorporated are:

(0.25)

AM SECTION

– Preamplifier and double balanced mixer

– One pin local oscillator

– IF amplifier with internal AGC

– Detector and audio preamplifier

ORDERING NUMBER : TDA 1220BK

FM SECTION

– IF amplifier and limiter

– Quadrature detector

– Audio preamplifier

The TDA1220B is suitable up to 30MHz AM and for

FM bands (including 450KHz narrow band) and

features:

– Sensitivity regulation facility (*)

– High recovered audio signal suited for stereo

decoders and radio recorders

– Very simple DC switching of AM-FM

– Low current drain

– AFC facility

(*) Maximum AM sensitivity can be reduced by means of a resistor

– Very constant characteristics (3V to 16V)

– High sensitivity and low noise

– Very low tweet

(5 to 12KΩ) between pin 4 and ground.

BLOCK DIAGRAM

March 1993

1/18

TDA1220B

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

16

Unit

V

V_s

Supply voltage

P_tot

400

mW

°C

Total power dissipation at T_amb< 110°C

Operating temperature

T_op

-20 to 85

-55 to 150

T

_stg, T_j

Storage and junction temperature

°C

PIN CONNECTION

(Top view)

THERMAL DATA

Symbol

Parameter

Value

Unit

R_th-j-amb

Thermal resistance junction-ambient

max

100

°C/W

2/18

TDA1220B

ELECTRICAL CHARACTERISTICS ( T_amb= 25 °C, V_s= 9V unless otherwise specified, refer to test circuit)

Symbol

Parameter

Supply voltage

Drain current

Test conditions

Min.

Typ.

Max.

16

Unit

V

V_s

Id

3

FM

AM

10

14

15

mA

20

AM SECTION (f_o= 1 MHz; f_m= KHz)

V_i

S/N

V_i

Input sensitivity

S/N = 26 dB

m = 0.3

m = 0.8

m = 0.3

12

52

25

µV

dB

mV

V_i= 10 mV

∆V_out= 10 dB

V_i= 1 mV

45

94

80

AGC range

100

130

V_o

Recovered audio signal

(pin 9)

200

1

d

Distortion

m = 0.3

m = 0.8

d < 10%

0.4

1.2

%

V

V_i= 1 mV

V_H

R_i

Max input signal handling

capability

m = 0.8

m = 0

1

Input resistance between

pins 2 and 4

7.5

18

KΩ

C_i

Input capacitance between m = 0

pins 2 and 4

pF

R_o

Output resistance (pin 9)

4.5

7

9.5

36

KΩ

dB

Tweet 2 IF

m = 0.3

Tweet 3 IF

40

55

Vi = 1 mV

FM SECTION (f_o= 10.8 MHz; f_m= 1 KHz)

V_i

Input limiting voltage

-3 dB limiting point

22

50

µV

AMR

Amplitude modulation

rejection

m = 0.3

40

55

dB

∆f = ±22.5 KHz

V_i= 3 mV

S/N

d

Ultimate quieting

Distortion

V_i= 1 mV

65

0.7

dB

%

∆f = ±22.5 KHz

∆f = ±75 KHz

1.5

0.5

d

Distortion

0.25

0.1

%

V_i= 1 mV

Vi = 1 mV

∆f = ±22.5 KHz

d

Distortion (double tuned)

%

V_o

Recovered audio signal

(pin 9)

80

110

140

mV

R_i

Ci

Input resistance between

pin 16 and ground

6.5

14

7

KΩ

pF

Input capacitance between

pin 16 and ground

R_o

Output resistance (pin 9)

4.5

9.5

KΩ

3/18

TDA1220B

Figure 1. Test circuit

Figure 2. PC board and component layout (1:1 scale) of the test circuit

4/18

TDA1220B

Figure 3. Audio output, noise

and tweet levels vs. input

signal (AM section)

Figure 4. Distortion vs. input

signal and modulation index

(AM section)

Figure 5. Audio output vs.

supply voltage (AM section)

Figure 6. Audio output and

noise level vs. input signal (FM

section)

Figure 7. Distortion vs. input

signal (FM section)

Figure 8. Audio output vs.

supply voltage (FM section)

Figure 9. Amplitude modu-

lation rejectionvs. input signal

(FM section)

Figure 10. ∆ DC output voltage

(pin. 9) vs. frequency shift (FM

section)

Figure 11. ∆ DC output voltage

(pin

9)

vs.

ambient

temperature (FM section)

5/18

TDA1220B

APPLICATION INFORMATION

AM Section

RF Amplifier and mixer stages

The RF amplifier stage (pin 2) is connected directly to the secondary winding of the ferrite rod antenna or

input tuned circuit. Bias is provided at pin 4 which must be adequately decoupled. The RF amplifier provides

stable performance extending beyond 30 MHz.

The Mixer employed is a double - balanced multiplier and the IF output at pin 3 is connected directly to the

IF filter coil.

Local oscillator

The local oscillator is a cross coupled differential stage which oscillates at the frequency determined by the

load on pin 1.

The oscillator resonant circuit is transformer coupled to pin 1 to improve theQ factor and frequency stability.

The oscillator level at pin 1 is about 100 mV rms and the performance extends beyond 30 MHz, however

to enhance the stability and reduce to a minimum pulling effects of the AGC operation or supply voltage

variations, a high C/L ratio should be used above 10 MHz.

An external oscillator can be injected at pin 1. The level should be 50 mV rms and pin 1 should be connected

to the supply via a 100W resistor.

IF Amplifier Detector

The IF amplifier is a wide band amplifier with a tuned output stage.

The IF filters can be either LC or mixed LC/ceramic.

AM detection occurs at pin 7. A detection capacitor is connected to pin 6 to reduce the radiation of spurious

detector products.

The Audio output is at pin 9 (for either AM or FM); the IF frequency is filtered by an external capacitor which

is also used as the FM mono de-enphasis network. The audio output impedance is about 7KΩ and a high

impedance load (~ 50KΩ) must be used.

AGC

Automatic gain control operates in two ways.

With weak signals it acts on the IF gain, maintaining the maximum S/N. For strong signals a second circuit

intervenes which controls the entire chain and allows signal handling in excess of one volt (m = 0.8).

At pin 8 there is a carrier envelope signal which is filtered by an external capacitor to remove the Audio and

RF content and obtain a mean DC signal to drive the AGC circuit.

6/18

TDA1220B

APPLICATION INFORMATION (continued)

FM Section

IF Amplifier and limiter

The 10.7 MHz IF signal from the ceramic filter is amplified and limited by a chain of four differential stages.

Pin 16 is the amplifier input and has a typical input impedance of 6.5 KW in parallel with 14 pF at 10.7 MHz.

Bias for the first stage is available at pin 14 and provides 100% DC feedback for stable operating conditions.

Pin15 is the second inputto the amplifier and is decoupledto pin 14, which is groundedbya 20 nF capacitor.

An RLC network is connected to the amplifier output and gives a 90° phase shift (at the IF centre frequency)

between pins 13 and 12. The signal level at pin 13 is about 150 mV rms

FM Detector

The circuit uses a quadrature detector and the choise of component values is determined by the acceptable

level of distortion at a given recovered audio level.

With a double tuned network the linearity improves (distortion is reduced) and the phase shift can be

optimized; however this leads to a reduction in the level of the recovered audio. Asatisfactory compromise

for most FM receiver applications is shown in the test circuit.

Care shoul be taken with the physical layout.

The main recommandations are:

• Locate the phase shift coil as near as possible to pin 13.

• Shunt pins 14 and 16 with a low value resistor (between 56Ω and 330Ω).

• Ground the decoupling capacitor of pin 14 and the 10.7 MHz input filter at the same point.

AM-FM Switching

AM-FM switching is achieved by applying a DC voltage at pin 13, to switch the internal reference.

Typical DC voltages (refer to the test circuit)

Pins

AM

1

9

2

3

9

4

5

6

7

9

8

0.7

0

9

10

9

11

0

12

0.1

9

13

0.1

9

14

8.5

8

15

8.5

8

16 Unit

1.4

8.4

1.9

1.7

8.5

8

V

FM

0.02

0.02 0.02 8.5

9

0

7/18

TDA1220B

APPLICATION SUGGESTION

Reccomended values are referred to the test circuit of Fig. 2.

Part

number

Recommended

value

Smaller than

recommended value

Larger than

recommended value

Purpose

AGC bypass

C1

Increase of the distortion Increase of the AGC time

at low audio frequency

100 µF

100 nF

10 nF

constant

C2 (*)

C3 (*)

AM input

DC cut

FM input

DC cut

C4

C5

20 nF

FM amplifier bypass

Reduction of sensitivity

– Bandwidth increase

– Higher noise

C6

C7

C8

68 pF

100 nF

Ceramic filter coupling

FM detector decoupling

Power supply bypass

IF bandwidth reduction

Danger of RF irradiation

IF bandwidth increase

Noise increase of the

audio output

C9

C10 (*)

C11

AGC bypass

Increase of the distortion Increase of the AGC time

10 µF

56 pF

at low audio frequency

constant

Tuning of the AM

oscillator at 1455 KHz

6.8 nF

100 nF

220 µF

2.7 nF

50 µs

FM de-enphasis

C12

Output DC

decoupling

Low audio frequency cut

C13

Power supply

decoupling

Increase of the distortion

at low frequency

C16

AM detector capacitor

Low suppression of

the IF frequency and

harmonics

Increase of the audio

distortion

R1 (*)

R2 (*)

R3

68 ohm

56 ohm

330 ohm

FM input matching

AM input matching

Ceramic filter matching

Audio output decrease

and lower distortion

R4

8.2 Kohm

560 ohm

82 Kohm

2.2 Kohm

3.3 Kohm

FM detector

coil Q setting

Audio output decrease

and higher AMR

Audio output increase

and higher distortion

R5

FM detector

load resistor

Lower IF gain and Lower

AGC range

R6

AM detector

coil Q setting

Higher IF gain and lower

AGC range

R7

R8

455 KHz IF filter

matching

455 KHz IF filter

matching

(*) Only for test circuit

8/18

TDA1220B

APPLICATION INFORMATION (continued)

Figure 12. Portable AM/FM radio

9/18

TDA1220B

APPLICATION INFORMATION (continued)

Figure 13. PC board and component layout of the fig. 12 1 : 1 scale

10/18

TDA1220B

APPLICATION INFORMATION (continued)

F1 - 10.7 MHz IF Coil

C_o

(pF)

Q_o

TURNS

f

(MHz)

–

1-3

1-2

6

2-3

8

4-6

2

TOKO - FM1 - 10x10 mm.

154 AN - 7A5965R

–

10.7

110

F3 and F5 - 455 KHz IF Coil

C_o

(pF)

Q_o

TURNS

f

(KHz)

1.3

1-3

70

1-2

57

2-3

116

4-6

24

TOKO - AM3 - 10x10 mm.

RLC - 4A7525N

180

455

F4 - FM Detector Coil

C_o

(pF)

Q_o

TURNS

f

(KHz)

1.3

82

1-3

12

–

TOKO - 10x10 mm.

KACS - K586 HM

10.7

100

F6 - AM Oscillator Coil

L

(µH)

1-3

Q_o

1-3

80

TURNS

2-3

f

(kHz)

1-2

2

4-6

8

TOKO - 10x10 mm.

RWO + 6A6574N

796

220

75

L5 - Antenna Coil

L

(µH)

Q_o

TURNS

f

(KHz)

WIRE: LITZ - 15x0.05 mm.

CORE: 10x80 mm.

1-2

105

3-4

7

796

11/18

TDA1220B

APPLICATION INFORMATION (continued)

Typical performance of the radio receiver of fig. 12 (V_s= 9V)

Parameter

WAVEBANDS

Test Conditions

Value

87.5 to 108 MHz

510 to 1620 KHz

1 µV

FM

AM

FM

AM

S/N = 26dB

S/N = 6dB

S/N = 26dB

∆f = 22.5KHz

m = 0.3

SENSITIVITY

1 µV

m = 0.3

10 µV

0.25%

∆f = 22.5KHz

∆f = 75KHz

m = 0.3

FM

AM

FM

AM

P_o= 0.5W

DISTORTION

(fm = 1KHz)

0,7%

0.4%

V_i= 100 µV

m = 0,8

0,8%

P_o= 0.5W

V_i= 100 µV

P_o= 0.5W

V_i= 1 mV

64 dB

50 dB

∆f = 22.5KHz

SIGNAL TO NOISE

(fm = 1KHz)

m = 0.3

AMPLITUDE

MODULATION

REJECTION

FM

50 dB

V_i= 100 µV

∆f = 22.5KHz

m = 0.3

2nd H. f = 911 KHz

3rd H. f = 1370 KHz

0.3%

0.07%

20 mA

3 to 12V

QUIESCENT CURRENT

SUPPLY VOLTAGE RANGE

12/18

TDA1220B

APPLICATION INFORMATION (continued)

Figure 14. Low cost 27 MHz receiver

Figure 15. L2 Oscillator coil

Figure 16. L1 Antenna Coil

Coil support: Toko 10K

Primary winding: 10 Turns of enamelled cop-

per wire 0.16 mm diameter (pins 3-1).

Secondary winding: 4 Turns copper wire

0.16 mm diameter (pins 6-4)

Primary winding: as L2 (pins 3-1)

Secondary winding: 2 Turns copper wire

0.16 mm diameter (pins 6-4)

Figure 17. Low cost 27 MHz receiver with external xtal oscillator

13/18

TDA1220B

APPLICATION INFORMATION (continued)

Figure 18. 455 KHz FM narrow band IF

Figure 18. P.C. board and component layout of the circuit of fig. 18

14/18

TDA1220B

APPLICATION INFORMATION (continued)

Figure 20. Discriminator "S" curve response (circuit of fig. 18)

Figure 21. Application in sound channel of multistandard TV or in parallel AM modulated sound

channel (AM section only).

15/18

TDA1220B

ELECTRICAL CHARACTERISTICS (V_s= 12V)

AM Section (f_o= 39MHz; f_m= 15KHz)

Parameter

Typ

Unit

Audio out (m = 0.3)

60

37

55

56

65

150

600

2

mV

dB

mV

KHz

%

S/N (V_i= 100 mV; m = 0.3)

S/N (V_i= 1mV;

S/N (V_i= 10mV;

m = 0.3)

AGC range (m = 0.8, ∆V_out= 3dB)

Max input signal handling (m = 0.8; d = 5%)

– 3dB bandwidth

Distortion (V_i= 100 µV;

(V_i= 1mV;

m = 0.3)

m = 0.8)

1

%

(V_i= 10mV;

0.8

7

%

(V_i= 100 µV;

(V_i= 1mV;

5

%

(V_i= 10mV;

3

%

FM Section (f_o= 5.5MHz; f_m= 1KHz)

Parameter

Typ

Unit

3

40

58

54

51

70

0.5

0.6

1

–3dB input limiting voltage

(∆f = 25KHz)

m = 0.3;

µV

dB

%

AMR

(∆f = +25KHz;

(∆f = ±25KHz;

(∆f = ±50KHz;

(∆f = ±50KHz

(∆f = ±50KHz;

V_i= 100 µV)

V_i= 1mV)

m = 0.3;

V_i= 10mV)

S/N

V_i= 100 µV)

V_i= 1 mV)

V_i= 10mV)

V_i= 100 µV)

V_i= 1 mV)

V_i= 10 mV)

V_i= 100 µV)

V_i= 1mV)

V_i= 10mV)

S/N

Distortion

%

1

%

1

%

70

mV

Recovered audio (∆f = ±15KHz; V_i= 1 mV)

Recovered audio can be varied by variation of 3.3K ohm resistor in parallel with

the discriminator coil)

Max input signal handling

1

V

Note: AM performance at 39MHz can be improved by mean of a selective preamplifier stage.

16/18

TDA1220B

DIP16 PACKAGE MECHANICAL DATA

mm

inch

TYP.

DIM.

MIN.

0.51

0.77

TYP.

MAX.

MIN.

0.020

0.030

MAX.

a1

B

b

1.65

0.065

0.5

0.020

0.010

b1

D

E

e

0.25

20

0.787

8.5

2.54

17.78

0.335

0.100

0.700

e3

F

7.1

5.1

0.280

0.201

I

L

3.3

0.130

Z

1.27

0.050

17/18

TDA1220B

Information furnished is believed to be accurate and reliable. However, SGS-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. No

license is granted by implication or otherwise under any patent or patent rights of SGS-THOMSON Microelectronics. Specifications mentioned

in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied.

SGS-THOMSON Microelectronics products are not authorized for use as critical components in life support devices or systems without express

written approval of SGS-THOMSON Microelectronics.

SGS-THOMSON Microelectronics GROUP OF COMPANIES

Australia - Brazil - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco - The Netherlands - Singapore -

Spain - Sweden - Switzerland - Taiwan - Thaliand - United Kingdom - U.S.A.

18/18

型号:	TDA1220B
生命周期：	Obsolete
IHS 制造商：	TELEFUNKEN MICROELECTRONICS GMBH
Reach Compliance Code：	unknown
风险等级：	5.83
Is Samacsys：	N
Base Number Matches：	1

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