TDA1581 Просмотр технического описания (PDF) - Philips Electronics

Номер в каталоге

Компоненты Описание

Список матч

TDA1581

Decoder for traffic warning (VWF) radio transmissions

Philips Electronics 

Philips Semiconductors

Decoder for traffic warning (VWF) radio

transmissions

Preliminary specification

TDA1581T

FILTER INFORMATION

Gain

Amplifier conditions: Go >> Gv and Go >> 2 × Q2

Gv= – p----2----+-----p-----×-----R---------3------C----×----1------C----+------1----C----×------2----C--------R----2--------1----+------p×-----R---------C----1----------1----×----------R----------2----R-----×-----1----R-----+-----3-----R-----×----2-----C---------1----------×----------C---------2------ , in whichp = jω and Gv= V-V----o-i

GENERAL EQUATION

C1 = C2 = C

resonance frequency

ωr =

gain at ω = ωr

−Gvr =

quality

Q=

----------------------------------1-----------------------------------

R-R----11-----+×-----RR-----22-- × R3 × C1 × C2

C-----1---C--+--2---C-----2-- × RR-----31--

C-C----11-----+×-----CC-----22-- × -R----3---R--(---R1----1-×----+-R----R2-----2---)--

----------------------1-----------------------

C R-R----11-----+×-----RR-----22-- × R3

12-- × RR-----31--

12-- -R----3---R--(---R1----1-×----+-R----R2-----2---)--

C1 = C2 = C

R2 << R1

--------------1----------------

C R2 × R3

12-- × RR-----31--

12-- × RR-----32--

Recommended components

C1, C2

and

R1, R2, R3

or

C1, C2

and

R1, R2, R3

metallized polycarbonate film (MKC) capacitors; ±5%

metal film (MR) resistors; ±2%

metallized polyester film (MKT) capacitors; ±5%

carbon film (CR) resistors; ±2%

March 1992

11

Share Link: