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ICs for FM/AM Tuner
AN7261FBQ
FM multiplex reception IC
s Overview
The AN7261FBQ is an FM-multiplex reception IC including a front-end and an IF block for FM tuner. Since the receiving circuit of FM multiplex signal is integrated on a single chip, it is most suitable for saving the space of sets.
24 17
Unit : mm
25
16
0.3+0.10 -0.05
7.00.3 0.6250.100
s Features
* A single chip IC for an FM-multiplex tuner block, which was conventionally composed of two ICs. * Fewer external components * Can be used for 15 MHz IF
32
0.10.1
0.15+0.10 -0.05 0.6250.100
(0.55)
1
8
0.8
9
s Applications
* VICS, RDS
7.00.3 9.20.4
LQFP032-P-0707
s Block Diagram
Mute adj. VC adj. VCC1 Band
24
23
22
21
20
19
18
17
VREF GND1
25 26 27 28 29 30 31
VREF
IF det. Mute
16 15 14
AFC SD adj. Det.
IF limiter
Band det. SD IF counter
13 12 11 10 OSC
VC
Level det. AGC amp.
GND2 OSC AGC
32 1
IF amp. 2 3
Mix. 4 5 6 7 8
9
ADX
RF in
VCC2
N.C.
1.40.2
9.20.4
1
AN7261FBQ
s Pin Descriptions
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 1st IF input GND for 1st IF input Mixer output 1 Mixer output 2 PIN diode driver Mix. Input VCC2 N.C. AGC output OSC buffer output GND2 OSC SD/IF counter output Detection output SD sensitivity adjustment AFC voltage output Description Pin No. 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
ICs for FM/AM Tuner
Description Higher freguency correction adjustment VCC1 FM detection 2nd IF output Mute adjustment Mute voltage output Control voltage adjustment Band mute SW/band signal output VREF GND1 2nd IF input GND for 2nd IF input Control voltage output Keyed-AGC input AGC sensitivity adjustment 1st IF output
s Absolute Maximum Ratings
Parameter Supply voltage Supply current Power dissipation *2 Operating ambient temperature *1 Storage temperature *1 Symbol VCC ICC PD Topr Tstg Rating 9.1 66 343.6 -30 to +80 -55 to +150 Unit V mA mW C C
Note) *1: Ta = 25C except power dissipation, operating ambient temperature and storage temperature. *2: Ta = 80C
s Recommended Operating Range
Parameter Supply voltage Symbol VCC Range 7.2 to 9.0 Unit V
2
ICs for FM/AM Tuner
AN7261FBQ
s Electrical Characteristics at VCC = 8 V, fIN1 = 98 MHz, fIN2 = 15 MHz, Ta = 25C
Parameter Control voltage 1 Control voltage 2 Control voltage 3 Control voltage 4 Control voltage 5 Control voltage 6 Detection output level 1 Detection output level 2 Counter output level SD sensitivity SD bandwidth Symbol VC1 VC2 VC3 VC4 VC5 VC6 VO1 VO2 VIFC SDS SDW Conditions No signal input, DC voltage of pin 29 VIN2 = 60 dB, DC voltage of pin 29 VIN2 = 80 dB, DC voltage of pin 29 VIN2 = 100 dB, DC voltage of pin 29 VC5 = VC3-VC2 VC6 = VC4-VC3 VIN2 = 80 dB/1 kHz, 30%FM, AC voltage of pin 14 VIN2 = 80 dB/76 kHz, 10%FM, AC voltage of pin 14 VIN2 = 100 dB, V15 = 2 V, IFC output level VIN2 when V15 = 2 V, SD > 4 V Bandwidth when SD > 4 V, SD VIN2 = 100 dB VIN2 level, 30 kHz LPF on, and 1 kHz 30% FM when pin 14 AC voltage drops by 3 dB fOSC = 113 MHz, without input VIN1 = 80 dB, IF out level VIN1 level when V9 = 3 V VIN1 = 66 dB, V9 VIN1 = 78 dB, V9 Without input Min 0.0 0.7 1.8 3.0 1.0 1.05 70 37 150 61 90 Typ 0.05 1.25 2.4 3.7 1.2 1.25 90 47 180 71 115 Max 0.8 1.8 3.0 4.4 1.4 1.45 Unit V V V V V V
110 mV[rms] 57 mV[rms]
210 mV[rms] 81 140 dB kHz
Limiting sensitivity
VLIM
40
48
54
dB
Local oscillation buffer output IF output level AGC sensitivity High-level AGC voltage Low-level AGC voltage Supply current
VOS VIF SAGC VAH VAL ITOT
110 60 68 5.9 41
160 110 72 6.3 0.05 52
210 mV[rms] 170 mV[rms] 76 6.7 0.5 65 dB V V mA
Note) FM tuning condition: Adjust the VT of application voltage so that OSC buffer output frequency becomes 113 MHz10 kHz.
s Usage Notes
1. Use less than 10 k of external resistor of pin 31 2. Use this IC not to exceed allowable power dissipation value refering to the "s Technical Information".
3
AN7261FBQ
s Technical Information
1. PD Ta curves of LQFP032-P-0707 P D Ta
1.600
ICs for FM/AM Tuner
1.400 1.388
1.200
Power dissipation PD (W)
Mounted on standard board (grass epoxy : 50 mm x 50 mm x t0.8 mm) Rth(j-a) = 90.0C/W
1.000
0.800
0.613 0.600 Independent IC without heat shink Rth(j-a) = 203.7C/W
0.400
0.200
0.000
0
25
50
75
100
125
150
Ambient temperature Ta (C)
2. Specification for special parts Part IF coil Maker Sumida Maker part number 4162-T006 Specification Connection
3 2 1 6 4
Pin No. Turns 4-6 1-2 2-3 1-3 10T 11T 11T 11T
LC value 12 pF10%
Q at no load 50 or more (15 MHz)
Detection coil
Matsushita electronics parts
SQF5EB033A
3 2 1
4
0.59 H 5.0%
4120% (15 MHz)
6
4
ICs for FM/AM Tuner
s Application Circuit Example
AN7261FBQ
Band
VCC
100 k 300
VC adj.
180 pF
18 VCC1 2.2 k
21 Mute adj.
18 pF
100 pF
0.1 F
50 k
24
23
22
20
19
VREF 25
0.1 F
17
1 F 3.9 k
16 SD adj. 15 14
1000 pF 1000 pF 51 k 100 k
0.1 F 100 F
AFC Seek
GND1
26 27 28
13 12
27 pF 3 pF
VC
0.01 F 50 k 100 k 0.01 F 10 k
Det. IFC SD
1000 pF
29 30 31 32 1 2 3 4 5 6 VCC2 7 N.C. 8
11 GND2 10
1000 pF
VT
OSC
9
1 F
470
330
RF in
ADX
AGC
5
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(1) An export permit needs to be obtained from the competent authorities of the Japanese Government if any of the products or technologies described in this material and controlled under the "Foreign Exchange and Foreign Trade Law" is to be exported or taken out of Japan. (2) The technical information described in this material is limited to showing representative characteristics and applied circuit examples of the products. It does not constitute the warranting of industrial property, the granting of relative rights, or the granting of any license. (3) The products described in this material are intended to be used for standard applications or general electronic equipment (such as office equipment, communications equipment, measuring instruments and household appliances). Consult our sales staff in advance for information on the following applications: * Special applications (such as for airplanes, aerospace, automobiles, traffic control equipment, combustion equipment, life support systems and safety devices) in which exceptional quality and reliability are required, or if the failure or malfunction of the products may directly jeopardize life or harm the human body. * Any applications other than the standard applications intended. (4) The products and product specifications described in this material are subject to change without notice for reasons of modification and/or improvement. At the final stage of your design, purchasing, or use of the products, therefore, ask for the most up-to-date Product Standards in advance to make sure that the latest specifications satisfy your requirements. (5) When designing your equipment, comply with the guaranteed values, in particular those of maximum rating, the range of operating power supply voltage and heat radiation characteristics. Otherwise, we will not be liable for any defect which may arise later in your equipment. Even when the products are used within the guaranteed values, redundant design is recommended, so that such equipment may not violate relevant laws or regulations because of the function of our products. (6) When using products for which dry packing is required, observe the conditions (including shelf life and after-unpacking standby time) agreed upon when specification sheets are individually exchanged. (7) No part of this material may be reprinted or reproduced by any means without written permission from our company.
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A. These materials are intended as a reference to assist customers with the selection of Panasonic semiconductor products best suited to their applications. Due to modification or other reasons, any information contained in this material, such as available product types, technical data, and so on, is subject to change without notice. Customers are advised to contact our semiconductor sales office and obtain the latest information before starting precise technical research and/or purchasing activities. B. Panasonic is endeavoring to continually improve the quality and reliability of these materials but there is always the possibility that further rectifications will be required in the future. Therefore, Panasonic will not assume any liability for any damages arising from any errors etc. that may appear in this material. C. These materials are solely intended for a customer's individual use. Therefore, without the prior written approval of Panasonic, any other use such as reproducing, selling, or distributing this material to a third party, via the Internet or in any other way, is prohibited.
2001 MAR

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