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TEA5710

AM/FM radio receiver circuit

Philips Electronics 

Philips Semiconductors

AM/FM radio receiver circuit

Product specification

TEA5710; TEA5710T

L7

FM-AERIAL

L8

AM-RF

print-coil

L1-2 = 60 nH

N1-2 = 2.5 turns

test circuit only:

L1-3 = 40 µH

N1-3 = 34 turns

unloaded Q = 85

wire diameter 0.09 mm

TOKO type 7P

material TOKO 7BRS

3

L8

1

S MGE136

Ceramic filters

K1

FM-IF1

K2

FM-IF2

K3

FM-DET

Capacitors

C1

VARICON

Murata SFE 10.7 MS 3

Murata SFE 10.7 MS 2

Murata CDA 10.7 MC 40

AM: 140/82 pF

FM: 2 × 20 pF

trimmer: 4 × 8 pF

TOKO type no. HU-22124

Application notes

1. Short circuiting: all pins are short-circuit proof except pin 1 (FM-RFI) with respect to the supply voltage pin.

2. Tuning indicator (at pin 15, IND): connect either a tuning indicator (e.g. a LED) between this pin and the supply

voltage (pin 16) or connect the pin IND to ground.

3. For an example of PC-board layout: see Figs 6 and 7.

March 1994

18

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