NJW1109D Просмотр технического описания (PDF) - Japan Radio Corporation
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NJW1109D Datasheet PDF : 14 Pages
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NJW1109
Headphone Amplifier with Electronic Volume
s GENERAL DESCRIPTION
The NJW1109 is a headphone amplifier with electronic volume. It
includes widely gain adjustable volume, +20 to –80 dB, and mute
function. These are controlled by I2C bus. The NJW1109 is
suitable for headphone output on TV set.
s PACKAGE OUTLINE
NJW1109D NJW1109M NJW1109V
s FEATURES
q Operating Voltage
q Electronic Volume
q I2C Bus Interface
q Bi-CMOS Technology
q Package Outline
7.5 to 10 V
+20dB to -80dB / 0.5dB step, Mute
DIP14, DMP14, SSOP14
s BLOCK DIAGRAM
CAPa
SDA SCL
I2C
Interface
ADR
IN a
VOL
OUTa
s PIN FUNCTION
1
7
IN b
VOL
OUTb
Bias
Vref
CAPb
V+ GND
No. SYMBOL
FUNCTION
1
V+ Power Supply
14
2 OUTb Bch Output
3
N.C. No Connect
No. SYMBOL
FUNCTION
8
SCL I2C Bus Clock Input
9
Vref Reference voltage stabilized
capacitor connect terminal
10
INa
Ach Input
4 CAPb Balance control click noise 11 CAPa Volume control click noise
absorbing capacitor connect
absorbing capacitor connect
terminal
terminal
5
INb Bch Input
12 N.C. No Connect
8
6
ADR I2C Bus Slave Address
Select
7
SDA I2C Bus Data Input
13 OUTa Ach Output
14 GND Ground
–1–
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