TDA2320AN [STMICROELECTRONICS]

STEREO AMPLIFIER; 立体声放大器


型号：	TDA2320AN
厂家：	ST
描述：	STEREO AMPLIFIER 立体声放大器消费电路商用集成电路音频放大器视频放大器光电二极管
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TDA2320A

STEREO AMPLIFIER

WIDE SUPPLY VOLTAGE RANGE (3 to 36V)

SINGLE OR SPLIT SUPPLY OPERATION

VERY LOW CURRENT CONSUMPTION

(0.8mA)

VERY LOW DISTORTION

NO POP-NOISE

DIP8

(Plastic Package)

DESCRIPTION

The TDA2320A is a stereo class A preamplifier in-

tended for application in portable cassette players

and high quality audio systems.

The TDA2320A is a monolithic integrated circuit in

a 8 lead plastic dip.

ORDER CODES

Package

Temperature

Range

Part Number

TDA2320A

-40^oC, +105^oC

•

PIN CONNECTIONS (top view)

V_CC

Output 1

Output 2

Inverting Input 1

Non-inverting Input 1

GND

Inverting Input 2

Non-inverting Input 2

October 1997

1/12

TDA2320A

SCHEMATIC DIAGRAM (1/2 TDA2320A)

Inverting

Input

Non-inverting

Input

V_CC

Q13

Q11

Q14

Output

Q16

Q12

Q15

Q17

Q10

GND

ABSOLUTE MAXIMUM RATINGS

Symbol

Parameter

Value

Unit

V_CC

P_tot

Supply Voltage

Total Power Dissipation at T_amb= 70^oC

400

^oC

T_stg, T_jStorage and Junction Temperature

–40 to 150

2/12

TDA2320A

ELECTRICAL CHARACTERISTICS

V_CC= 15V, T_amb= 25^oC (unless otherwise specified) (refer to the test circuits)

Symbol

V_CC

I_CC

Parameter

Min.

Typ.

Max.

Unit

Supply Voltage (*)

Supply Current (*)

Input Bias Current

0.8

I_ib

150

500

V_io

Input Offset Voltage

R_s≤ 10kΩ

I_io

Input Offset Current

A_vd

Open Loop Voltage Gain

V_CC= 15V

f = 333Hz

f = 1kHz

f = 10kHz

f = 1kHz

V_CC= 4.5V

V_OPP

Output Voltage Swing (f = 1kHz, R_L= 600Ω) (*)

V_CC= 15V

V_CC= 4.5V

2.5

GBP

FBP

Gain-bandwidth Product

f = 20kHz

MHz

kHz

1.5

2.5

Power Bandwidth (*)

V_o= 5V_PP, THD = 1%

Slew Rate (*)

1.6

V/µs

THD

Distortion (V_o= 2V, A_V= 20dB) (*)

f = 1kHz

f = 10kHz

0.03

0.08

e_n

Equivalent Input Noise Voltage (**)

Curve A

µV

R_s= 50Ω

R_s= 600Ω

R_s= 5kΩ

R_s= 50Ω

R_s= 600Ω

R_s= 5kΩ

R_s= 600Ω

1.1

1.5

1.3

1.5

1.4

B = 22Hz to 22kHz

f = 1kHz

nV√Hz

V_O1/V₀₂

SVR

Channel Separation (**)

f = 1kHz

100

Supply Voltage Rejection Ratio(**)

f = 100Hz

(*) Test circuit of figure 1

(**) Test circuit of figure 2

3/12

TDA2320A

TYPICAL APPLICATION

STEREO PREAMPLIFIER FOR CASSETTE PLAYERS

18kΩ

V_CC

22µF

0.1µF

82kΩ

4.7µF

0.3mV

1/2

220pF

TAPE

HEAD

TDA2320A

Ω

100k

20kΩ

180kΩ

10nF

15kΩ

150Ω

22µF

18kΩ

22µF

Ω

82k

4.7µF

0.3mV

1µF

1/2

TDA2320A

220pF

TAPE

HEAD

100kΩ

20kΩ

180kΩ

10nF

Ω

15k

150Ω

22µF

TEST CIRCUITS

Figure 1

Figure 2

V_CC

+7.5V

22µF

18kΩ

0.1µF

Ω

82k

0.22µF

220pF

1/2

TDA2320A

OUT

R _s

1µF

220pF

1/2

TDA2320A

OUT

100kΩ

Ω

22k

0.1µF

-7.5V

3.3kΩ

150Ω

33Ω

4/12

TDA2320A

Figure 3 : Supply Current versus Supply

Figure 4 : Supply Current versus Ambient

Voltage

Temperature

Figure 5 : Output Voltage Swing versus

Figure 6 : Power Bandwidth

Load Resistance

Figure 7 : Total Harmonic Distortion

Figure 8 : Total Input Noise versus Source

versusOutput Voltage

Resistance

5/12

TDA2320A

Figure 9 : Noise Density versus

Figure 10 :RIAA Preamplifier Response

Frequency

Figure 11 :Tape Preamplifier Frequency

6/12

TDA2320A

APPLICATION INFORMATION

Figure 12 :Stereo RIAA Preamplifier

18kΩ

+15V

22µF

C13

0.1µF

Ω

100k

4.7µF

IN (L)

120kΩ

1 F

100pF

C14

1/2

OUT (L)

TDA2320A

R13

1kΩ

220kΩ

C9 3.3nF

C10

Ω

820

R10

15nF

22kΩ

10µF

18kΩ

22µF

100kΩ

4.7µF

IN (R)

C15

1µF

100pF

1/2

TDA2320A

OUT (R)

Ω

120k

R14

1kΩ

R11

220kΩ

C11

3.3nF

C12

820Ω

R12

15nF

Ω

22k

10µF

Figure 13 :P.C. Board and Components layout of the Circuit of figure 12

7/12

TDA2320A

Figure 14 :Second Order 2kHz Butterworth

Crossover Filter for Hi-Fi Active

Boxes

Figure 15 :Third Order 2.8kHz Bessel

Crossover Filter for Hi-Fi

Actives Boxes

+15V

100nF

+15V

100nF

12nF

6.8nF

0.47µF

1/2

TDA2320A

1/2

0.22µF

12kΩ

Ω

10k

Ω

10k

TDA2320A

0.22µF 12kΩ

5kΩ

100nF

WOOFER

AMPLIFIER

5kΩ

100nF

WOOFER

AMPLIFIER

5.6nF

4.7nF

1.2nF

5.6kΩ

-15V

f_c= 2.8kHz

f_c= 2kHz

INPUT

8.2k Ω

10kΩ

0.1µF

1/2

TDA2320A

4.7nF

0.1µF

1/2

TDA2320A

5kΩ

5.6nF

TWEETER

AMPLIFIER

5kΩ

TWEETER

AMPLIFIER

Ω

12k

Ω

47k

22kΩ

5.6kΩ

Figure 16 : Frequency Response

Figure 17 : Frequency Response

(circuit of figure 14)

(circuit of figure 15)

8/12

TDA2320A

Figure 18 :200Hz to 2kHz Active Bandpass Filter for Midrange Speakers

V_CC

10nF

0.3µF

0.47 F

10kΩ

1/2

TDA2320A

1/2

TDA2320A

Ω

12k

Ω

12k

Ω

12k

5kΩ

56nF

1.8nF

6.8nF

0.1µF

5.6kΩ

22kΩ

V_CC

Figure 19 :Subsonic Filter

10k Ω

f_c(Hz)

C (µF)

V_in

0.68

0.47

0.33

0.22

0.1

1/2

TDA2320A

out

22kΩ

100

Figure 20 :High-cut Filter

f_c(kHz)

C1 (nF)

C2 (nF)

10kΩ

V_in

3.9

2.2

6.8

4.7

2.2

1.5

1/2

TDA2320A

1.2

V_out

0.68

9/12

TDA2320A

Figure 21 :Fifth Order 3.4kHz Low-pass Butterworth Filter

R_i

1/2

TDA2320A

C_i

1/2

TDA2320A

1st order

2nd order

3rd order

For f_c= 3.4kHz and R_i= R1 = R2 = R3 = R4 = 10kΩ, we obtain :

2Π f_c

C1 = 1.354 .

C1 = 0.421 .

C2 = 1.753 .

= 6.33nF

= 1.97nF

= 8.20nF

C3 = 0.309 .

C4 = 3.325 .

= 1.45nF

2Π f_c

= 15.14nF

2Π f_c

The attenuation of the filter is 30dB at 6.8kHz and

better than 60dB at 15kHz.

Figure 22 :Sixth-pole 355Hz Low-pass Filter (Chebychev type)

1/2

TDA

2320A

1/2

10kΩ

TDA

1/2

2320A

10kΩ

TDA

2320A

3.54nF

1/2

10kΩ

TDA

2320A

16.3nF

60nF

0.47 F

86.1nF

220nF

161nF

56k

Ω

Thisis a6-pole Chebychevtype with ±0.25dBripple

inthepassband.A decouplingstage isusedto avoid

the influence of the input impedance of the filter’s

characteristics.

The attenuation is about 55dB at 710Hz and

reaches 80dB at 1065Hz. The in band attenuation

is limited in practice to the ±0.25dB ripple and does

not exceed 1/2dB at 0.9f_c.

10/12

TDA2320A

Figure 23 :Three Band Tone Control

47nF

100kΩ

BASS

11kΩ

47nF

100kΩ

22nF

500kΩ

4.7nF

MIDRANGE

+15V

3.6kΩ

1.8kΩ

100nF

0.22µF

TREBLE

1.8kΩ

1/2

TDA2320A

56kΩ

1/2

TDA2320A

100nF

OUT

-15V

Figure 24 :Frequency Response of the

Circuit of figure 23

A : all controls flat

B : bass & treble boost, mid flat

C : bass & treble cut, mid flat

D : mid boost, bass & treble flat

E : mid cut, bass treble flat

11/12

TDA2320A

PACKAGE MECHANICAL DATA

8 PINS -PLASTIC DIP

Millimeters

Inches

Typ.

Dimensions

Min.

Typ.

Max.

Min.

Max.

3.32

0.131

0.51

1.15

0.020

0.045

0.014

0.008

1.65

0.55

0.065

0.022

0.012

0.430

0.384

0.356

0.204

0.304

10.92

9.75

7.95

0.313

2.54

7.62

0.100

0.300

6.6

0260

0.200

0.150

0.060

5.08

3.81

1.52

3.18

0.125

Information furnished is believed to be accurate and reliable. However, SGS-THOMSON Microelectronics assumes no responsi-

bility 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 publicationare 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 - Canada - China - France - Germany - Hong Kong - Italy - Japan - Korea - Malaysia - Malta - Morocco

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12/12

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