APA4835 Anpec Electronics Corporation, APA4835 Datasheet

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APA4835

Manufacturer Part Number
APA4835
Description
Manufacturer
Anpec Electronics Corporation
Datasheet

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APA4835
Features
Applications
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
Rev. A.7 - Mar., 2003
DC Volume Control Interface , 0dB to –105dB
Operating Voltage : 3.3V to 5V
Stereo switchable bridged/single-ended
power amplifiers
Low Supply Current , I
Low Shutdown Current , I
Bridge-Tied Load (BTL) or Single-Ended-(SE)
Modes Operation
Output Power at 1% THD+N , V
Output Power at 10% THD+N , V
Single-ended mode at 1.0% THD+N
Depop Circuitry Integrated
System Beep Detect
Thermal shutdown protection circuitry
High supply voltage ripple rejection
Low Crossover Distortion
PC99 Compliant
28-pin TSSOP-P (with enhanced thermal pad)
power package available
Notebook and Desktop Computers
Multimedia Monitors
Portable Applications
2.2W/Ch (typ) into a 3
2.0W/Ch (typ) into a 4
1.2W/Ch (typ) into a 8
2.8W/Ch (typ) into a 3
2.3W/Ch (typ) into a 4
1.5W/Ch (typ) into a 8 Load
95mW/Ch (typ) into 32 Load
ANPEC Electronics Corp.
Stereo 2.8W Audio Power Amplifier with DC Volume Control
DD
= 13mA at Stereo BTL
DD
Load
Load
Load
Load
Load
= 0.7µA
DD
DD
=5V
=5V
1
General Description
The APA4835 is a monolithic integrated circuit , which
provides DC volume control , and a stereo bridged
audio power amplifiers capable of producing 2.8W
(2.2W) into 3
APA4835 includes a DC volume control , stereo
bridge-tied and single-ended audio power amplifiers
, stereo docking outputs , and a selectable gain con-
trol , that makes it optimally fittable for notebook PC
, multimedia monitors , and other portable
applications. The attenuator range of the volume
control in APA4835 is from 0dB (DC_Vol=0.7V
–105dB (DC_Vol=0V) with 32 steps. Both of the
depop circuitry and the thermal shutdown protection
circuitry are integrated in APA4835 , that reduces
pops and clicks noise during power up or shutdown
mode operation , and protects the chip from being
destroyed by over temperature failure. To simplify
the audio system design , APA4835 combines a ste-
reo 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. Be-
sides the low supply current design to increase the
efficiency of the amplifiers , APA4835 also features a
shutdown function which keeps the supply current
only 0.7µA (typ).
Pin Description
SHUTDOWN
Gain Select
Right Dock
Left Dock
Right In
Beep In
DC Vol
Left In
GND
Mode
Mute
GND
GND
V
DD
with less than 10% (1.0%) THD+N.
10
11
12
13
14
1
2
3
4
5
6
7
8
9
and Selectable Gain
28
27
26
25
24
23
22
21
20
19
18
17
16
15
www.anpec.com.tw
Right Out +
V
Right Out -
Right Gain 2
Right Gain 1
GND
BYPASS
HP Sense
GND
Left Gain 1
Left Gain 2
Left Out -
V
Left Out +
DD
DD
DD
) to

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APA4835 Summary of contents

Page 1

... SE/BTL input control pin signal. Be- sides the low supply current design to increase the efficiency of the amplifiers , APA4835 also features a shutdown function which keeps the supply current only 0.7µA (typ). Pin Description ...

Page 2

... Soldering Temperature,10 seconds S V Electrostatic Discharge ESD Note :*1. APA4835 integrates internal thermal shutdown protection when junction temperature ramp up to 150°C. *2. Human body model : C=100pF, R=1500 , 3 positive pulses plus 3 negative pulses Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 ...

Page 3

... IN THD=1%, f=1kHz THD=10%, f=1kHz Rating Unit 60 ° 25°C A APA4835 Unit Min. Typ. Max. 3.3 5 0.7 2 0.8 V APA4835 Unit Min. Typ. Max. ±0.5 dB -90 -105 -88 dB -88 = 25°C A APA4835 Unit Typ 2.2 W 2.0 1.2 1.5 www.anpec.com.tw ...

Page 4

... RIPPLE RMS f=1kHz , C =2 =75mW, R =32 , A-Wtd Filter =1k , A-Wtd Filter L Description 4 = 25°C A APA4835 Typ. 0.2 0.15 0 ,A-Wtd 25°C A APA4835 Typ 100 0.01 =1k L 0.005 58 =2 102 40 www.anpec.com.tw Unit % Unit ...

Page 5

... APA4835 Pin Description Pin I/O Name No VDD 6, 16, 27 Supply voltage input pin DC_Vol 7 I Volume control function input pin. Right Dock 9 O Right docking output pin Right Right channel audio input pin Beep Beep signal input pin Left Left channel audio input pin ...

Page 6

... APA4835 Typical Application Circuit Inte rnal g ain se lect 100K HP Sense 1 00K 21 To Control Pin Hea dpho Con trol Left Dock 2 0K Left In 20K 00K Bee p 11 Bee p In Detect 2 00K Rig ht In ...

Page 7

... APA4835 Typical Characteristics RL=3 Po=1.75W 2 BTL 1 0.5 0.2 0.1 0.05 0.02 0. 100 200 500 1k Frequency (Hz = RL=8 Po=1.0W 2 BTL 1 0.5 0.2 AV=8 AV=2 0.1 0.05 AV=4 0.02 0. 100 200 500 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 0.5 0.2 0.1 0.05 0.02 0. 10k 20k 0.5 0.2 0.1 0.05 0.02 0. 10k 20k =5V DD RL=4 Po=1.5W BTL ...

Page 8

... APA4835 Typical Characteristics Cont = RL=3 BTL 2 1 f=20kHz 0.5 0.2 f=1kHz 0.1 f=20Hz 0.05 0.02 0.01 10m 20m 50m 100m 200m Output Power ( = RL=8 BTL 2 1 f=20kHz 0.5 0.2 0.1 f=1kHz 0.05 f=20Hz 0.02 0.01 10m 20m 50m 100m 200m Output Power (W) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 ...

Page 9

... APA4835 Typical Characteristics Cont = RL=8 Po=0.25W 0.5 0.2 AV=1 0.1 0.05 AV=4 AV=2 0.02 0. 100 200 500 1k Frequency (Hz = RL=10k 2 Vin=1Vrms SE 1 0.5 0.1 AV=1 0.05 0.02 AV=4 0.01 0.005 AV=2 0.002 0.001 20 50 100 200 500 1k Froquency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 0.5 0.1 0.05 0.02 0.01 0.005 0.002 0.001 2k 5k 10k ...

Page 10

... APA4835 Typical Characteristics Cont = RL= 0.5 f=20kHz 0.1 0.05 f=20Hz 0.02 0.01 f=1kHz 0.005 0.002 0.001 10m 20m 30m 50m 70m 100m Output Power (W =3. RL=4 Po=0.65W 2 BTL 1 0.5 AV=2 AV=8 0.2 0.1 AV=4 0.05 0.02 0. 100 200 500 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 0.5 0.1 0.05 0.02 0.01 0.005 ...

Page 11

... APA4835 Typical Characteristics Cont =3. RL=16 Po=0.2W 2 BTL 1 0.5 0.2 0.1 AV=8 AV=2 0.05 AV=4 0.02 0. 100 200 500 1k Output Power ( =3. RL=8 BTL 2 1 f=20kHz 0.5 0.2 f=1kHz 0.1 0.05 f=20Hz 0.02 0.01 10m 20m 30m 50m 80m Output Power (W) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 0.5 0.2 0.1 0.05 0.02 0. 10k 20k 10m ...

Page 12

... APA4835 Typical Characteristics Cont =3. RL=8 Po=100mW 0.5 0.2 AV=1 0.1 AV=4 0.05 AV=2 0.02 0. 100 200 500 1k Frequency (Hz =3. RL=10k Vin=1Vp 0.5 0.2 0.1 AV=1 0.05 AV=2 0.02 AV=4 0. 100 200 500 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 0.5 0.2 0.1 0.05 0.02 0. 10k 20k 0.5 0.2 0.1 0.05 0.02 0. 10k 20k 10m ...

Page 13

... APA4835 Typical Characteristics Cont =3. RL= 0.5 0.2 f=20kHz 0.1 0.05 f=1kHz 0.02 f=20Hz 0.01 10m 12m 15m 20m 25m 30m 35m 42m Output Power ( = RL=10k 2 docking 1 0.5 0.1 f=20kHz 0.05 0.02 f=1kHz 0.01 0.005 f=20Hz 0.002 0.001 100m 200m 300m 500m Output Voltage (V) Copyright ANPEC Electronics Corp. ...

Page 14

... APA4835 Typical Characteristics Cont. 100u No filter 50u A_wtd filter 20u 10u 5u V =5V DD RL=8 2u Av=2V/V BTL 100 200 500 1k Frequency (Hz =5V DD RL=8 -20 Po=1W Av=2V/V BTL -40 -60 -80 -100 f=20kHz -120 20 50 100 200 500 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 100u 50u ...

Page 15

... APA4835 Typical Characteristics Cont. +12 Cf=0.22 F +10 Cf=0 Cf=0.068 100 200 500 1k Frequency (Hz) 0.7 0.6 0.5 0.4 R =16 L 0.3 0.2 R = 0.25 0.5 0.75 Output Power (W) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 2 1.8 1.6 1.4 1.2 1 0.8 0.6 V =5V DD RL=8 0.4 Av=2V/V 0.2 BTL 10k 20k 0 0 0.18 L 0.16 0.14 0.12 0.1 0.08 0.06 V =5V 0.04 DD THD<1% 0.02 BTL 0 1 1.25 1 ...

Page 16

... APA4835 Typical Characteristics Cont Load 1 7 2.5 BTL -Supply Voltage (V) DD 0.16 V =5V DD RL=32 0.14 SE 0.12 0.1 0.08 THD=10% 0.06 0.04 0.02 0 2 -Supply Voltage (V) DD Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 2 1.8 1.6 1.4 1.2 1 0.8 0.6 0.4 0 2 ...

Page 17

... APA4835 Typical Characteristics Cont. 0.8 0.7 0.6 0.5 0.4 0.3 0.2 THD=10% THD=1% 0 Load Resistance ( ) 0.34 0.32 0.3 0.28 0.26 0.24 0.22 0.2 0.18 0.16 0.14 0.12 0.1 0.08 THD=10% 0.06 THD=1% 0.04 0. Load Resistance ( ) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 1 0.9 0.8 0.7 0.6 0.5 0.4 0.3 THD=1% 0.2 0 ...

Page 18

... APA4835 Typical Characteristics Cont =5V DD -10 Vin=200mVp RL=8 -20 Cb=2.2 F SE/BTL -30 -40 -50 -60 -70 - 100 200 500 1k Frequency (Hz) Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 2k 5k 20k 18 www.anpec.com.tw ...

Page 19

... APA4835 Packaging Information eference egistration M O -153 EXPOSED THERMAL PAD ZONE (THERMALLY ENHANCED VARIATIONDS ONLY in 0. 0.80 b 0.19 6.4 (N =20PIN ) D 7.7 (N =24PIN ) 9.6 (N =28PIN ) 4 =20P 4 =24P ...

Page 20

... APA4835 Physical Specifications Terminal Material Solder-Plated Copper (Solder Material : 90/10 or 63/37 SnPb) Lead Solderability Meets EIA Specification RSI86-91, ANSI/J-STD-002 Category 3. Reflow Condition (IR/Convection or VPR Reflow) Reference JEDEC Standard J-STD-020A APRIL 1999 Pre-heat temperature Classification Reflow Profiles Average ramp-up rate(183 C to Peak) Preheat temperature 125 ± Temperature maintained above 183 C Time within actual peak temperature 10 – ...

Page 21

... APA4835 Reliability test program Test item SOLDERABILITY MIL-STD-883D-2003 HOLT MIL-STD-883D-1005.7 PCT JESD-22-B, A102 TST MIL-STD-883D-1011.9 ESD MIL-STD-883D-3015.7 Latch-Up JESD 78 Carrier Tape & Reel Dimensions Copyright ANPEC Electronics Corp. Rev. A.7 - Mar., 2003 Method 245 SEC 1000 Hrs Bias @ 125 C ...

Page 22

... APA4835 ...

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