Dolby B Noise Processor
EiInEtiEf,
DESCRIPTION
T h e N E 5 4 5 i s t h e m o n o l i t h i c i m p l e m e n t a t i o no f t h e D o l b y " B ...
Description
EiInEtiEf,
DESCRIPTION
T h e N E 5 4 5 i s t h e m o n o l i t h i c i m p l e m e n t a t i o no f t h e D o l b y " B n o i s e r e d u c t i o n s y s t e m .T h i s c i r c u i t i s u s e d t o r e d u c et h e level of background noise introduced during recording and p l a y b a c ko f a u d i o s i g n a l s o n m a g n e t i ct a p e , a n d t o i m p r o v e t h e n o i s e l e v e l i n F M b r o a d c a s tr e c e p t i o n . T h i s c i r c u i t i s o f D o l b y L a b s . L i c e n s i n ga n d a v a i l a b l eo n l y t o l i c e n c e e s application information may be obtained from Dolby L a b s .L o n d o n o r N e w Y o r k .
NOISE DOLBY.B PROCESSOR
545
INTEGRAIED LINEAR CIRCUITS
( T o pV i e w ) P I NC O N F I G U R A T I O N
B PACKAGE
Input
Input
By Pass
Output
By Pass
Reference
Reference
lnput
Input
Output
Output
ABSOLUTE M A X IM U M R A T I N G S
Supply Voltage O p e r a t i o nT e m p e r a t u r eR a n g e S t o r a g eT e m p e r a t u r eR a n g e L e a d T e m p e r a t u r e( S o l d e r i n g , 60 sec.) 24 Volts 9"6 1e+70"C 65"C to +i50"C +300"C
O utput
By Pass
By Pass
G rou nd
Order Part No. NE545B
BLOCK DIAGRAM
D I R C U I II D O L B YA T Y P EI N T E G R A T E C S I G N E T I CN SE 5 4 5 A
15
J
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