NJU8755V-TE1# NJR, NJU8755V-TE1# Datasheet

IC STEREO CLASS D PWR AMP 20SSOP

NJU8755V-TE1#

Manufacturer Part Number
NJU8755V-TE1#
Description
IC STEREO CLASS D PWR AMP 20SSOP
Manufacturer
NJR
Type
Class Dr
Datasheet

Specifications of NJU8755V-TE1#

Output Type
2-Channel (Stereo)
Max Output Power X Channels @ Load
1.2W x 2 @ 8 Ohm
Voltage - Supply
2.7 V ~ 5.25 V
Features
Mute, PWM, Short-Circuit Protection, Standby
Mounting Type
Surface Mount
Package / Case
20-SSOP
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
NJU#8755V-TE1
NJU#8755V-TE1TR
NJU#8755V-TE1TR
NJU8755V-TE1#TR
Ver.2008-11-19
GENERAL DESCRIPTION
power amplifier. The NJU8755 includes inversion
operational amplifier input circuit, PWM modulators, an
output-short protector and a low voltage detector. The
NJU8755 incorporates BTL amplifiers, which eliminate
AC coupling capacitors, capable of driving up to
1.2W/channel with simple external LC low-pass filters.
which achieves longer battery life for battery powered
applications, thus the NJU8755 is suited for portable
audio, note-PC, etc.
FEATURES
BLOCK DIAGRAM
2-Channel Analog Signal Input
2-Channel BTL Outputs :1.2W/channel at 5V into 8Ω
Standby(Hi-Z), Mute Control
Built-in Short Protector
Built-in Low Voltage Detector
Operating Voltage
CMOS Technology
Package Outline
The NJU8755 is an analog signal input stereo class D
Class-D operation achieves high power-efficiency,
COM
IN
IN
R
L
Analog Signal Input Stereo Class D Power Amplifier
Soft Start
2.7 to 5.25V
SSOP20
-
+
+
-
MUTE
Control Logic
STBY
V
DD
-
-
+
+
TEST
V
SS
OUT
OUT
MUTE
TEST
Low Voltage
V
V
V
V
Detector
PACKAGE OUTLINE
PIN CONFIGURATION
V
IN
DDL
DDL
DDL
SSL
DD
LN
LP
L
Modulator
Modulator
Pulse
Width
Pulse
Width
1
2
3
4
5
6
7
8
9
10
Protector
Short
NJU8755V
17
20
19
18
16
15
14
13
12
11
NJU8755
V
IN
COM
STBY
V
OUT
V
OUT
V
V
SS
DDR
SSR
DDR
DDR
R
V
OUT
V
V
OUT
V
V
OUT
V
V
OUT
V
RP
RN
DDL
SSL
DDL
SSL
DDR
SSR
DDR
SSR
LP
LN
RP
RN
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NJU8755V-TE1# Summary of contents

Page 1

... Built-in Low Voltage Detector Operating Voltage 2.7 to 5.25V CMOS Technology Package Outline SSOP20 BLOCK DIAGRAM IN L COM IN R Soft Start Ver.2008-11-19 TEST MUTE OUT OUT Low Voltage Control Logic MUTE STBY TEST NJU8755 PACKAGE OUTLINE NJU8755V PIN CONFIGURATION DDL SSL DDL DDL Pulse ...

Page 2

NJU8755 PIN DESCRIPTION No. SYMBOL TEST 4 MUTE DDL 10 6 OUT SSL 8 OUT DDR 16 13 OUT SSR ...

Page 3

FUNCTIONAL DESCRIPTION (1) Signal Output The OUT and OUT LP/LN RP/RN be converted to analog signal via external 2nd-order or higher LC filter. A switching regulator with a high response against a voltage fluctuation is the best selection for the ...

Page 4

NJU8755 ABSOLUTE MAXIMUM RATINGS PARAMETER Supply Voltage Input Voltage Operating Temperature Storage Temperature Power Dissipation Note 1) All voltage are relative to “V Note 2) The LSI must be used inside of the “Absolute maximum ratings”. Otherwise, a stress may ...

Page 5

ELECTRICAL CHARACTERISTICS PARAMETER Supply Voltage DD DDP DDN Input Impedance Voltage Gain Output Power Efficiency Output THD Output Power S/N Dynamic Range Channel Separation Output Level Difference Between L- and R- channels Maximum Mute Attenuation Operating Current ...

Page 6

NJU8755 TYPICAL APPLICATION CIRCUIT <LCR Filter Configuration> 0.1µF 10µ 2.2µ 10µF 2.2µ Figure 2.1. Application Circuit example <LR Filter Configuration> 0.1µF 10µ 2.2µ 10µF 2.2µ Figure 2.2. Application ...

Page 7

Using the LCR filter the power consumption is somewhat lower than using the LR filter power consumption when no signal input. The THD+N is somewhat influenced by the LR filter more than the LCR filter. Please test the circuit carefully ...

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