U2510B datasheet(9/15 Pages) ATMEL

Part #	U2510B

Description	All-Band AM/FM Receiver and Audio Amplifier

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Manufacturer	ATMEL [ATMEL Corporation]

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9 / 15 page

U2510B

Rev. A3, 23-Feb-01

9 (15)

Test Circuit

14

15

16

17

18

U2510B

19

20

21

22

13

12

11

10

9

8

7

23

24

25

26

27

28

65

43

2

1

4.7

µF

18 pF

C

24

100

pF

C

25

C

8

68 nF

C

23

150 kΩ

R

3

S

6

A

B

C

T

4

S

4

A

B

S

5

A

B

T

2

22 pF

C

5

18 pF

C

4

2.2 k

Ω

R

4

L

2

22 pF

C

3

L

1

43 pF

C

2

150

µH

L

A

5.6 pF

C

19

4.7

µF

C

7

C

6

22 nF

C

20

455 kHz

CF

1

AM IFT

BA

S

1

CF

2

10.7 MHz

150

Ω

R

5

C

24

100 nF

R

6

100

Ω

C

25

10 nF

R

7

75

Ω

R

8

50

Ω

T

1

V

i1

(50

Ω)

V

i2

(50

Ω)

C

22

10 nF

LED

D

1

A

B

off

S

3

C

9

10 nF

R

1

390

Ω

R

2

10 k

Ω

FM

AM

Tape

S

2

C

21

10 nF

3 k

Ω

R

9

V

iIF

I

LED

100 nF 10

µF

C

14

C

10

10 nF

C

11

V

D

V

i3

C

12

470

µF

C

13

10

µF

8 Ω/

2 W

R

L

V

S

V

o

GND

220

µF

C

15

V

mute

13913

Figure 16. Test circuit

Application

General

The U2510B is a bipolar monolithic IC for use in radio

sets, for example, headphone receivers, radio recorders

and clock radios. The IC contains all AM, FM, AF and

switching function blocks necessary to construct these

kinds of radio receivers using only few components

around the IC. In the design, special efforts were made to

get good performance for all AM bands (short and long

wave).

The implementation of enhanced functions (options)

makes it possible to improve the radio’s performance and

to produce radios with interesting features. In this case

few (external) parts have to be changed or added. By

using all or some of the options offered by the U2510B

different types or classes of radios can be designed to the

customer ’s requirements with the same IC.

One of the general advantages of using the U2510B is the

fact that all receiver functions (including the options) are

integrated and tested on a system level. Therefore, two

additional cost-savings are achieved by:

1.

Shorter development time through less technical

problems and

2.

Higher reproductivity and low reject level in the set

production line.

Another advantage, due to the technology of the

U2510B, is the wide operating voltage range, espe-

cially the upper limit (13 V). This feature allows the

use of soft power supply for line powered radios

which can also reduce the set’s total cost.

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Manufacturer	Part #	Datasheet	Description
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