TDA1579T datasheet(9/13 Pages) PHILIPS

Il numero della parte	TDA1579T

Spiegazioni elettronici	Decoder for traffic warning VWF radio transmissions

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Produttore elettronici	PHILIPS [NXP Semiconductors]

Homepage	http://www.nxp.com

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9 / 13 page

May 1992

9

Philips Semiconductors

Product speciﬁcation

Decoder for trafﬁc warning (VWF) radio

transmissions

TDA1579

TDA1579T

FILTER INFORMATION

Gain

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

, in which p = j

ω and Gv =.

Recommended components

GENERAL EQUATION

C1 = C2 = C

R2 < < R1

Resonance frequency

ωr =

Gain at

ω = ω

r

−Gvr =

Quality

Q=

C1, C2

metallized polycarbonate ﬁlm (MKC) capacitors;

± 5%

and

R1, R2, R3

metal ﬁlm (MR) resistors;

± 2%

or

C1, C2

metallized polyester ﬁlm (MKT) capacitors;

± 5%

and

R1, R2, R3

carbon ﬁlm (CR) resistors;

± 2%

G

v

p

R1 C1

⋅

--------------------

p

2

p

C1

C2

+

R3 C1 C2

⋅⋅

---------------------------------

R1

R2

+

R1 R2 R3 C1 C2

⋅⋅⋅⋅

----------------------------------------------------------

++

-------------------------------------------------------------------------------------------------------------------

–

=

V

o

V

i

------

1

R1 R2

⋅

R1

R2

+

---------------------- R3 C1 C2

⋅⋅⋅

-----------------------------------------------------------------

1

C

R1 R2

⋅

R1

R2

+

---------------------- R3

⋅

--------------------------------------------

1

CR2 R3

⋅

-----------------------------

C2

C1

C2

+

----------------------

R3

R1

--------

⋅

1

2

---

R3

R1

--------

⋅

1

2

---

R3

R1

--------

⋅

C1 C2

⋅

C1

C2

+

------------------------

R3 R1

R2

+

()

R1 R2

⋅

--------------------------------------

⋅

1

2

---

R3 R1

R2

+

()

R1 R2

⋅

--------------------------------------

1

2

---

R3

R2

--------

⋅

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