TEA5711/N2 Просмотр технического описания (PDF) - Philips Electronics

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TEA5711/N2

AM/FM stereo radio circuit

Philips Electronics 

Philips Semiconductors

AM/FM stereo radio circuit

Product specification

TEA5711; TEA5711T

NUMBER

TYPE

L8

AM-RF

DESCRIPTION

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

CIRCUIT

Ceramic filters

K1

FM-IF1

K2

FM-IF2

K3

FM-DET

Capacitors

C1

VARICON

Murata SFE 10.7 MS 2

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 number HU-22124

Application remarks

• Short circuiting: all pins are short-circuit proof except pin 16 (FM-RFI) with respect to the supply voltage pin.

• For an example of printed-circuit board layout: see Figs 9 and 10.

• Align VCO with aerial signal present.

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Fig.11 Typical AM audio voltage (VAF; signal at m = 0.3), noise and THD as a function of RF input

voltage (Vin1; fi = 1 kHz). Measured in test circuit Fig.7 with VP = 3.0 V.

September 1994

21

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