U2510B ATMEL Corporation, U2510B Datasheet

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U2510B

Manufacturer Part Number
U2510B
Description
Manufacturer
ATMEL Corporation
Datasheet

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All-Band AM/FM Receiver and Audio Amplifier
Description
The U2510B is an integrated bipolar one-chip AM/FM
radio circuit. It contains an FM front end with
preamplifier, FM IF and demodulator, a complete AM
Features
D Superior FM strong signal behavior by using RF AGC
D Soft mute and HCC for decreasing interstation noise
D Excellent AFC performance (level controlled, both
D Level indicator (LED drive) for AM and FM
Block Diagram
Rev. A3, 23-Feb-01
AM osc.
FM RF
AGC
BPE
tank
AM
ant.
in FM mode
polarities available)
FM ant.
12
11
10
5
V
Ref
FM RF
tank
AM
Voltage stab.
mode control
9
AGC
FM
front end
front end
FM
15
AM
FM
and
8
S
Tape
FM osc.
2
tank
RF AGC
7
AM/FM
AFC
V
AFC mode
S
21
control
AFC
AGC
Figure 1. Block diagram
6
IF
14
13
amp. and
IF BPE
AM IF
detect.
AGC
AM
16
receiver, an AF amplifier and a mode switch for AM, FM
and tape. This circuit is designed for clock radios and
portable radio-cassette recorders.
D DC mode control: AM, FM and tape
D Wide supply-voltage range and low quiescent current
D High AF output power: 1 W
D Electronic volume control
D Electronic AF bandwidth control (treble and high cut)
D Output stage for headphone and speaker drive
20
IF
FM IF
amp.
LED
V
19
Level
indic.
S
1 22
discr.
FM
2
AF preamp.
Volume
Mute
HCC
(Replaceable)
18
Treble
Power
amp.
V
26
S
U2510B
28
27
25
23
24
3
4
Vol
1 (15)
13912

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U2510B Summary of contents

Page 1

... All-Band AM/FM Receiver and Audio Amplifier Description The U2510B is an integrated bipolar one-chip AM/FM radio circuit. It contains an FM front end with preamplifier and demodulator, a complete AM Features D Superior FM strong signal behavior by using RF AGC D Soft mute and HCC for decreasing interstation noise in FM mode ...

Page 2

... U2510B Order Information Extended Type Number U2510B-M U2510B-M__T Pin Description Mute 1 FM-discr Vol ctrl in 4 AMOsc 5 FM-AFC 6 FMOsc Ref FMtank 9 AMtank 10 FM-AGC 11 FMin 12 FE-GND 13 AM/FM 14 IFout 14812 Figure 2. Pinning Pin Symbol Function 1 Mute Mute voltage output, time constant (C mute depth and threshold adjustable by load ...

Page 3

... 1.2 1.2 1 1.5 1.2 – 1.5 1.2 – 1.5 1.5 1 2.7 2.7 2 3.0 3.0 3 1.2 1.2 1 U2510B TAPE – 1.6 – – 1.0 – 2.6 2.6 2.6 2.4 2.4 2.4 2.4 – – – 1.9 – – 2.4 – 2.4 2.4 2.4 – 2.4 – – 2.4 – – 0 – – 1.4 – – – – 5.9 5.7 – ...

Page 4

... MHz measuring range: 300 kHz front-end voltage gain GV S Recovered audio voltage Detector output resistance dev. = " 75 kHz Detector output distortion U2510B-M__T: max (15) Symbol tot T amb Test Conditions / Pins Symbol ...

Page 5

... dBmV THD i1 = 105 dBmV THD 105 dBmV, voltage –10 dB FOM D af Pin LED Pin 5 V OSC U2510B Min. Typ. Max 1.8 0 AFC " 180 " 220 5.5 180 = 455 kHz 7 100 3 ...

Page 6

... U2510B 10 T =25 C amb 9510396 S Figure 3. Quiescent current with treble control 20 V =5mV =25 C amb 0 0.01 0 kHz ) 95 10397 Figure 4. AF section 10 f=1kHz T =25 C amb = =32W R = ...

Page 7

... Figure 10. Volume control range characteristics Rev. A3, 23-Feb- d(m=30%) 0 120 80 100 0 95 10407 Figure 11. AM/FM level indicator current 2.0 1.2 0.8 0 10408 Figure 12. AM section: AGC voltage (at Pin 22) U2510B AM I LED =25 C amb 120 100 V ( dBmV ) =1.6MHz i1 ...

Page 8

... U2510B 0 –20 –40 –60 –80 –100 –20 95 10401 0 R 68kW –20 100kW –40 –60 –80 –100 –20 95 10402 0 –20 –40 –60 –80 –100 95 10405 8 (15) S+N(Df="75kHz) S+N(Df="22.5kHz) AM(m=30 100 120 dBmV ) i Figure 13. FM section: Demodulator output level =0 S ...

Page 9

... I V LED Figure 16. Test circuit 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 ...

Page 10

... Figure 17 shows a circuit diagram for low end AM/AF radios using the U2510B. Figure 18 shows a circuit diagram of AM/AF radio for higher class designs using all possible options of the U2510B. The layout of the PC board, shown in figure 19, is suitable for both the circuit example shown in figure 17 and the circuit example shown in figure 18 ...

Page 11

... 4 U2510B 10.7 MHz 4.7 F Figure 17. Application circuit (low cost) U2510B Volume 100 4 ...

Page 12

... Figure 18. Application circuit (upgraded ( U2510B 10.7 MHz LED only Figure 19. PC-board Volume Treble ...

Page 13

... L: 630 mH total turns : 96 PFWE8 (88 to 108 MHz) SFU-455B BFCFL-455 SFE10.7MA5 CFSK 107M1 CDA10.7MC1 HD22124 AM/ Air coil Figure 20. U2510B Type Manufacturer 0.07 0.07 7MC-7789N Toko 35 7 21K7-H5 Mitsumi 0.06 7TRS-8441 Toko 29 L-5K7-H5 Mitsumi 0.09 0.09 mat A119 Toko mat ...

Page 14

... U2510B Package Information Package SDIP28 27.5 Dimensions in mm 27.1 23.114 1 14 (15) 4.8 4.2 0.9 3.3 0.53 0.43 1.778 technical drawings according to DIN specifications 10.26 10.06 8.7 8.5 0.35 0.25 12.2 11.0 13044 Rev. A3, 23-Feb-01 ...

Page 15

... Data sheets can also be retrieved from the Internet: Atmel Germany GmbH, P.O.B. 3535, D-74025 Heilbronn, Germany Telephone: 49 (0)7131 67 2594, Fax number: 49 (0)7131 67 2423 Rev. A3, 23-Feb-01 U2510B http://www.atmel–wm.com 15 (15) ...

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