Headphone Driver. APA2604C Datasheet

APA2604C Driver. Datasheet pdf. Equivalent

Part APA2604C
Description 3W Stereo Class-D Audio Power Amplifier and Class AB Headphone Driver
Feature APA2604C 3W Stereo Class-D Audio Power Amplifier and Class AB Headphone Driver (DC Volume Control, .
Manufacture ANPEC
Datasheet
Download APA2604C Datasheet



APA2604C
APA2604C
3W Stereo Class-D Audio Power Amplifier and Class AB Headphone Driver
(DC Volume Control, UVP, AGC)
Features
Operating Voltage: 3.3V-5.8V
High Efficiency 85% at PO=3W, 4Speaker,
V =5V, AGC Disable
DD
Filter-Free Class-D Amplifier
Low Shutdown Current
- IDD=1µA at VDD=5V
64 Steps Volume Adjustable from -80dB to
+20dB by DC Voltage with Hysteresis
AGC (Non-Clip) Function
- Disable : 0.45VDD~VDD, Floating
- Max, Power : Internal set limit level
AGC<0.27VDD
Smooth mute activation deactivation
UVP Function
- Disable : Floating
Output Power at THD+N=1%
BTL Mode
2.4W
at
V =5V,
DD
RL=4
1.4W
at
V =5V,
DD
RL=8
SE Mode
70mW
at
V =5V,
DD
RL=32
Output Power at THD+N=10%
3W
at
V =5V,
DD
RL=4
1.7W at VDD=5V, RL=8
Less External Components Required
Two Output Modes Allowable with BTL and SE
Modes Selected by SE/BTL Pin
Input Signal and Headphone Output Signal in
Phase
Thermal and Over-Current Protections with
Auto-Recovery
Power Enhanced Packages SSOP-24(236mil),
QFN4x4-20A
Lead Free and Green Devices Available
(RoHS Compliant)
General Description
The APA2604C is a stereo, high efficiency, filter-free Class-
D audio amplifier available in a SSOP-24 and QFN4x4-
20A packages.
The APA2604C provide the precise DC volume control,
the gain range is from +20dB (VVOLUME=0V) to -80dB
(VVOLUME=5V) with 64 steps precise control. It’s easy to get
the suitable amplifier’s gain with the 64 steps gain setting.
The filter-free architecture eliminates the output filters
compared to the traditional Class-D audio amplifier, and
reduces the external component counts and the compo-
nents high, it could save the PCB space, system cost,
simplifies the design and the power loss at filter.
APA2604C provides an AGC (Non-Clip) function, and this
function can low down the dynamic range for large input
signal. APA2604C can provide from 20dB to -80dB with
64 steps gain decrease for non-clipping function, and
this function can avoid output signal clipping.
The APA2604C also integrates the de-pop circuitry that
reduces the pops and click noises during power on/off or
shutdown enable process.
The APA2604C has built-in over-current and thermal pro-
tection that prevent the chip being destroyed by short cir-
cuit or over temperature situation.
APA2604C combines a stereo bridge-tied loads (BTL)
mode for speaker drive and a stereo single-end (SE)
mode for headphone drive into a single chip, where both
modes are easily switched by the SE/BTL input control
pin signal.
APA2604C is capable of driving 3W at 5V into 4speaker.
The efficiency can archived 85% at RL=4when PO=3W
at V =5V.
DD
APA2604C is capable of driving 70mW at 5V into 32
Headphone.
Smooth mute function when activation or deactivation
mute mode to minimize pop noise.
UVP function minimize power off induced pop noise.
ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and
advise customers to obtain the latest version of relevant information to verify before placing orders.
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Nov., 2014
1
www.anpec.com.tw



APA2604C
APA2604C
Applications
LCD TVs
DVD Player
Active Speakers
Simplified Application Circuit
Stereo Input
Signals
DC Volume
Control
SE/BTL
Signal
ROUT-
RIN
ROUT+
LOUT+
LIN
LOUT-
APA2604C
VOLUME
HP_ROUT
SE/BTL
HP_LOUT
SE/BTL
Signal
Pin Configuration
SD 1
BYPASS 2
RIN 3
GND 4
GND 5
LIN 6
VOLUME 7
MUTE 8
SE/BTL 9
AGC 10
UVP 11
VDD 12
APA2604C
Top View
SSOP-24
24 ROUT-
23 VDD
22 ROUT+
21 GND
20 GND
19 LOUT+
18 VDD
17 LOUT-
16 NC
15 HP_ROUT
14 NC
13 HP_LOUT
ROUT- 1
HP_ROUT 2
SD 3
Bypass 4
RIN 5
Copyright © ANPEC Electronics Corp.
Rev. A.1 - Nov., 2014
2
APA2604C
(Top View)
15 LOUT-
14 HP_LOUT
13 VDD
12 UVP
11 AGC
QFN4x4-20A
www.anpec.com.tw







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