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| NJM2776 Datasheet, PDF (1/10 Pages) New Japan Radio – Headphone Amplifier for Portable Audio | |||
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NJM2776
Headphone Amplifier for Portable Audio
s GENERAL DESCRIPTION
The NJM2776 is a low voltage headphone amplifier for
portable audio applications.
The NJM2776 operates directly for one battery supply with
independent power supply terminals (V+1 and V+2).
Also it provides shock-noise less standby mode.
The NJM2776 is suitable for portable MD, portable CD and
others.
s PACKAGE OUTLINE
NJM2776RB2
s FEATURES
q Operating Voltage
q Low Operating Current
q Supply Current in Standby mode
q Output Power Exceeds
q Shock-noise less Standby mode
q Bipolar Technology
q Package Outline
V+1(from step-up converter) =1.8 to 4.5V (however, V+1 > V+2)
V+2(from battery)
=0.9 to 4.5V (however, V+1 > V+2)
ICC4(V+1 side)=200µA typ. (V+1=2.3V, V+2=1.2V, No signal)
ICC3(V+2 side)=350µA typ. (V+1=2.3V, V+2=1.2V, No signal)
ICC2(V+1 side)=25µA typ. (V+1=2.3V, V+2=1.2V)
ICC1(V+2 side)= 6µA typ. (V+1=2.3V, V+2=1.2V)
PO=8.5mW typ. (RL=16â¦, THD=10%)
TVSP10
s PIN CONFIGURATION AND BLOCK DIAGRAM
V+2
1
OUT 1 2
IN 1 3
+
-
10 GND
-
+
9 OUT 2
8 IN 2
STANDBY TC 4
V+1 5
BIAS
REG
VREF AMP
7 STANDBY
6 VREF
1. V+2
2. OUT1
3. IN1
4. STADBY_TC
5. V+1
6. VREF
7. STANDBY
8. IN2
9. OUT2
10. GND
-1-
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