cxa2511aq Sony Electronics, cxa2511aq Datasheet - Page 13

• Manufacturer Part Number: cxa2511aq
• Description: Dolby B-c Type Noise Reduction System With Playback Equalizer Amplifier
• Manufacturer: Sony Electronics

Description of Operation
1. Signal route
AMP1 and AMP2 are operational amplifiers. AMP1 composes the playback equalizer amplifier by attaching an
external resistor and capacitor to PBFB, PBEQ and PBOUT pins.
AMP2 is an input selector and a line amplifier. The gain is 24dB when NR is OFF.
The Dolby NR reference level is –6dBm (LINEOUT).
PB IN
FWD
RVS
PBFB
AMP1
70µs
PBEQ
Fig. 1. Signal route block diagram
PBOUT
NR ON
(–30dBm)
TAPE
TAPEIN
– 13 –
NR OFF
AUXIN
AUX
AMP2
24dB
24dB
24dB
LINEOUT
(–6dBm Dolby level)
NR
CXA2511AQ