NJU7085 JRC, NJU7085 Datasheet - Page 12

• Manufacturer Part Number: NJU7085
• Description: Audio Amplifier / SSOP32
• Manufacturer: JRC

www.DataSheet4U.com
NJU7085
2.2.3 ealaMobile Mode
Fig.4 shows the signal channel at eala Mobile mode.
3 Power ON/OFF and pop noise during turn-on and turn-off transitions.
The NJU7085 reduces pop noise by using capacitor for charge & discharge.
The following shows tips of reducing pop noise.
3.1 Power Supply ON/OFF
Power ON/OFF should be changed on the STBY mode (D0,D1,D2=L,L,L)
3.2 STBY
The recommendation sequence is described as follows.
STBY (L,L,L)
It should be provided the charge time of at least 50 msec for reducing pop noise under application circuit
condition (C2=1 F).
The charge time is given by the following equation.
T = 5 x C2 x 100k [S]
3.3 Active (Bypass /eala /Mobile mode)
The recommendation sequence is described as follows.
Each mode
- 12 -
RIN
LIN
Active (Bypass /eala /Mobile mode)
Mute (H,L,H)
L ‐ R
Charge (L,L,H)
STBY (L,L,L)
FILTER
3D SP
MUTE (H,L,H)
MIN
MAX
Fig.4 Mobile Mode
STBY
VR
eala,Mobile
Bypass
each mode
Bypass
Phase
Shifter
Mobile
eala
LOUT
eala
ROUT
eala
LINP
RINP
LOUT+
LOUT-
ROUT-
ROUT+