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LM4835L-P28-T [UTC]

Audio Amplifier, 2 Func, CMOS, PDSO28;
LM4835L-P28-T
型号： LM4835L-P28-T
厂家： Unisonic Technologies    Unisonic Technologies
描述：

Audio Amplifier, 2 Func, CMOS, PDSO28

放大器 光电二极管 商用集成电路
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UNISONIC TECHNOLOGIES CO.,LTD  
LM4835  
CMOS IC  
STEREO 2.8W AUDIO POWER  
AMPLIFIER WITH DC VOLUME  
CONTROL AND SELECTABLE  
GAIN  
TSSOP-28  
ꢀ
DESCRIPTION  
The UTC LM4835 is a monolithic integrated circuit and designed  
to provide DC volume control , and a stereo bridged audio power  
amplifiers capable of producing 2.8W into 3Ω at 10% THD+N and  
2.2W into 3Ω at 1.0% THD+N.. UTC LM4835 incorporated a DC  
volume control, stereo bridge-tied and single-ended audio power  
amplifiers, stereo docking outputs, and a selectable gain control,  
makes it optimally suitable for notebook PC, multimedia monitors ,  
and other portable applications.  
HTSSOP-28  
(Exposed-DAP)  
*Pb-free plating product number: LM4835L  
ꢀ
FEATURES  
*Operating Voltage : 3.3V ~ 5V  
*Stereo switchable bridged/single-ended power amplifiers  
*DC Volume Control Interface , 0dB ~ -105dB  
*Low Supply Current (13mA at stereo BTL)  
*Low Shutdown Current(0.7μA,typ)  
*Bridge-Tied Load (BTL) or Single-Ended-(SE) Modes Operation  
*Output Power at 1% THD+N , VDD=5V  
-2.2W/Ch (typ) into a 3Ω Load  
-2.0W/Ch (typ) into a 4Ω Load  
-1.2W/Ch (typ) into a 8Ω Load  
*Output Power at 10% THD+N , VDD=5V  
-2.8W/Ch (typ) into a 3Ω Load  
-2.3W/Ch (typ) into a 4Ω Load  
-1.5W/Ch (typ) into a 8Ω Load  
*Single-ended mode:  
- 1.0% THD+N at 95mW/Ch (typ) into 32Ω  
*System Beep Detect  
*Thermal shutdown protection circuitry  
*High supply voltage ripple rejection  
*Low Crossover Distortion  
ꢀ ORDERING INFORMATION  
Ordering Number  
Package  
Packing  
Normal  
Lead Free Plating  
LM4835L-P28-R  
LM4835L-P28-T  
LM4835L-N28-R  
LM4835L-N28-T  
LM4835-P28-R  
LM4835-P28-T  
LM4835-N28-R  
LM4835-N28-T  
TSSOP-28  
TSSOP-28  
HTSSOP-28  
HTSSOP-28  
Tape Reel  
Tube  
Tape Reel  
Tube  
www.unisonic.com.tw  
1
Copyright © 2005 Unisonic Technologies Co.,LTD  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
PIN CONFIGURATION  
GND  
Shutdown  
Gain Select  
Mode  
28  
27  
Right Out+  
VDD  
1
2
26 Right Out-  
3
4
Right Gain 2  
Right Gain 1  
GND  
25  
24  
23  
22  
21  
20  
19  
18  
17  
16  
15  
Mute  
5
VDD  
6
Dc Vol  
7
Bypass  
Hp Sense  
GND  
8
9
Right Dock  
Right In  
Beep In  
Left In  
GND  
Left Gain 1  
Left Gain 2  
Left Out-  
VDD  
10  
11  
12  
13  
14  
Left Dock  
GND  
Left Out+  
ꢀ
PIN DESCRIPTION  
PIN NO.  
PIN NAME  
GND  
I/O  
I
DESCRIPTION  
1,8,14,20,23  
Ground connection for circuitry.  
Shutdown mode control signal input, place entire IC in shutdown mode when  
held high, IDD=0.7µA  
2
Shutdown  
3
4
Gain Select  
Mode  
I
I
I
Gain select input pin  
Mode select input pin  
5
Mute  
Mute control input pin  
6,16,27  
7
VDD  
Supply voltage input pin  
Dc Vol  
I
O
I
Volume control function input pin  
Right docking output pin  
9
Right Dock  
Right In  
10  
11  
12  
13  
15  
17  
18  
19  
21  
22  
24  
25  
26  
28  
Right channel audio input pin  
Beep In  
I
Beep signal input pin  
Left In  
I
Left channel audio input pin  
Left Dock  
Left Out +  
Left Out -  
Left Gain 2  
Left Gain 1  
HP Sense  
Bypass  
O
O
O
Right docking output pin  
Left channel positive output pin  
Left channel negative output pin  
Connect pin 2 of the external gain setting resistor for left channel  
Connect pin 1 of the external gain setting resistor for left channel  
Headphone sense control pin  
I
Bypass pin  
Right Gain 1  
Right Gain 2  
Right Out -  
Right Out +  
Connect pin 1 of the external gain setting resistor for right channel  
Connect pin 2 of the external gain setting resistor for right channel  
Right channel negative output pin  
Right channel positive output pin  
O
O
UNISONIC TECHNOLOGIES CO., LTD  
2
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
BLOCK DIAGRAM  
Internal gain  
select  
20kΩ  
10kΩ  
20kΩ  
Mode  
Mode  
Control  
Mute  
20kΩ  
HP Sense  
10kΩ  
0.068μF  
DC Vol Control  
-Left Out  
-
+
Left Dock  
20kΩ  
20kΩ  
20kΩ  
20kΩ  
Left In  
-
-
+Left Out  
+
+
200kΩ  
0.33μF  
Volume  
Beep  
Detect  
Beep In  
Bias Control32  
steps  
+
-
+Right Out  
200kΩ  
20kΩ  
0.33μF  
+
-
Right In  
Right Dock  
20kΩ  
10kΩ  
20kΩ  
-Right Out  
20kΩ  
Shutdown  
+
-
Power  
Management  
10kΩ  
VDD  
GND  
20kΩ  
Click and Pop  
Suppression  
Circuitry  
Bypass  
0.068μF  
20kΩ  
20kΩ  
UNISONIC TECHNOLOGIES CO., LTD  
3
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
ABSOLUTE MAXIMUM RATINGS  
PARAMETER  
SYMBOL  
VDD  
RATINGS  
6
UNIT  
V
Supply Voltage  
Operating Ambient Temperature  
Junction Temperature  
TOPR  
TJ  
0 ~ +70  
+125  
℃
℃
Storage Temperature  
TSTG  
-40 ~ +150  
℃
Note: 1.Absolute maximum ratings are stress ratings only and functional device operation is not implied. The  
device could be damaged beyond Absolute maximum ratings.  
2.The device is guaranteed to meet performance specifications within 0℃~70℃ operating temperature  
range and assured by design from –20℃~85℃.  
ꢀ
ꢀ
THERMAL CHARACTERISTICS  
PARAMETER  
SYMBOL  
θJA  
RATINGS  
UNIT  
105  
15  
TSSOP-28  
θJC  
Thermal Resistance  
℃/W  
θJA  
θJC  
93  
10  
HTSSOP-28  
Note: The θJA of HTSSOP-28 is given that exposed die attach pad is not soldered on PCB.  
ELECTRICAL CHARACTERISTICS(VDD=5V, Ta =25℃, unless otherwise specified.)  
PARAMETER  
SYMBOL  
TEST CONDITIONS  
MIN TYP MAX UNIT  
ENTIRE IC  
Supply Voltage  
VDD  
VIH  
VIL  
3.3  
4
5.5  
V
V
SE/BTL High Input Voltage  
SE/BTL Low Input Voltage  
Quiescent Power Supply Current  
Shutdown Current  
0.8  
25  
V
IDD  
VIN=0V, IO=0A  
13  
mA  
µA  
ISHD  
VPIN 2= VDD  
0.7  
2.0  
VOLUME ATTENUATORS  
±0.5  
Gain with VPIN 7 =5V  
dB  
dB  
dB  
dB  
Attenuator Range  
Mute Attenuation  
CRANGE  
Attenuation with VPIN 7 =0V  
VPIN 5 =5V, BTL Mode  
VPIN 5 =5V, SE Mode  
-90  
-88  
-88  
-105  
AM  
BTL MODE OPERATION  
Output Offset Voltage  
Output Noise Voltage  
VOS  
VN  
VIN=0V  
5
mV  
µV  
RL=8Ω, A-Wtd Filter  
RL=3Ω  
RL=4Ω  
30  
2.2  
2.0  
1.2  
1.5  
THD=1%,f =1kHz  
Output Power  
PO  
W
%
RL=8Ω  
THD=10%,f =1kHz  
RL=8Ω  
AVD=2, 20Hz < f <20kHz  
RL=4Ω, PO =1W  
RL=8Ω, PO=1W  
RL=32Ω, PO =340mW  
0.2  
0.15  
0.1  
Total Harmonic Distortion + Noise  
THD+N  
RSRR  
VRIPPLE =200mVRMS, RL=8Ω  
Power Supply Rejection Ratio  
Channel Separation  
74  
95  
95  
dB  
dB  
dB  
CB=2.2µF, f =120Hz  
XTALK f =1kHz , CB =2.2µF  
VDD=5V, PO =1.1W, RL=8Ω  
Signal-to-Noise Ratio  
SNR  
A-Wtd Filter  
UNISONIC TECHNOLOGIES CO., LTD  
4
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
ELECTRICAL CHARACTERISTICS(Cont.)  
SE MODE OPERATION  
Output Offset Voltage  
Output Noise Voltage  
VOS  
VN  
VIN=0V  
5
mV  
µV  
RL=1kΩ, A -Wtd Filter  
THD=1%, f =1kHz, RL=32Ω  
THD=10%, f =1kHz, RL=32Ω  
AV= 1, VOUT =1VRMS, f =1kHz  
RL=1Kω  
40  
95  
100  
Output Power  
PO  
mW  
0.01  
Total Harmonic Distortion plus Noise  
THD+N  
%
PO =75mW, RL=32Ω, AV = 1  
f =1kHz  
0.005  
V
RIPPLE =200mVRMS, f =120Hz  
Power Supply Rejection Ratio  
Channel Separation  
PSRR  
58  
95  
dB  
dB  
dB  
CB=2.2µF  
XTALK f =1kHz , CB=2.2µF  
PO =75mW,RL=32Ω,A -Wtd  
Filter  
Signal-to-Noise Ratio  
SNR  
102  
ꢀ
TRUTH TABLE FOR LOGIC INPUTS  
MUTE  
MODE  
HP SENSE  
DC VOL CONTROL  
Fixed Level  
Fixed Level  
Adjusted  
BRIDGED OUTPUT  
Vol.Fixed  
Muted  
SINGLE-ENDED  
Vol.Fixed  
0
0
0
0
1
0
0
1
1
X
0
1
0
1
X
Vol.Changed  
Muted  
Adjusted  
Vol.Changed  
Muted  
Muted  
UNISONIC TECHNOLOGIES CO., LTD  
5
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL APPLICATION CIRCUIT  
VDD  
VDD  
1μF  
R_var  
DC Vol Control  
V
DD  
Ω
20k  
19  
Ω
20k  
Internal gain select  
3
100k  
Ω
HP Sense  
18  
7
100k  
Ω
21  
5
4
To Control Pin on  
Headphone Jack  
Mode  
Control  
Mute  
Mode  
20kΩ  
0.068μF  
13  
10kΩ  
20kΩ  
10kΩ  
Left Dock  
- Left Out  
+
-
+
17  
Ω
20k  
Left In  
220μF  
1KΩ  
Control Pin  
Pin Ring  
20kΩ  
20kΩ  
12  
11  
-
+
+
-
+
15  
28  
0. 33μF  
+Left Out  
Ω
200k  
Beep In  
Volume  
Control  
32 steps  
Beep  
Detect  
To HP sense  
Circuit  
Bias  
Right In  
0. 33μF  
+
-
200kΩ  
+
-
Right  
Audio  
Input  
10  
9
+ Right Out  
+
20kΩ  
20kΩ  
Sleeve  
Tip  
20kΩ  
20k  
Ω
Right Dock  
- Right Out  
Headphone Jack  
26  
+
-
6, 16, 27  
V
DD  
+
Power  
Management  
220μF  
10kΩ  
Ω
10k  
1,8,14,20,23  
1KΩ  
GND  
0.1μF 0.1μF 0.1μF  
Bypass  
22  
20kΩ  
Click and Pop  
Suppression  
Circuitry  
0. 068μF  
2.2μF  
2
24  
25  
Shutdown  
Ω
20k  
20kΩ  
UNISONIC TECHNOLOGIES CO., LTD  
6
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS  
For VDD=5V, THD+N vs Frequency  
10  
10  
5
=5  
V
L =4Ω  
Po=1.5W  
BTL  
V
R
DD  
VDD  
=5  
V
Ω
5
RL  
=3  
Po=1.75W  
BTL  
2
1
2
1
0.5  
0.5  
0.2  
0.1  
0.2  
0.1  
0.05  
0.05  
0.02  
0.01  
0.02  
0.01  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
20  
50 100 200 500 1k 2k  
Frequency (Hz)  
5k 10k 20k  
10  
5
10  
DD =5V  
RL =16Ω  
V
RL  
DD =5  
=8Ω  
V
V
5
Po=1.0W  
BTL  
Po=0.5W  
BTL  
2
1
2
1
0.5  
0.5  
0.2  
0.2  
AV=2  
AV= 2  
AV=  
AV=4  
0.1  
0.05  
0.1  
0.05  
8
AV=8  
AV=4  
0.02  
0.01  
0.02  
0.01  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
50  
20  
100 200 500 1k 2k  
Frequency (Hz)  
5k 10k 20k  
10  
10  
=5  
V
=32Ω  
Po=75mW  
SE  
V
R
DD  
DD =5 V  
RL =8Ω  
Po=0.25W  
SE  
V
5
2
L
5
2
1
1
0.5  
0.02  
0.1  
0.5  
AV=  
1
0.2  
0.1  
0.05  
0.02  
AV=1  
AV=  
AV=4  
0.01  
0.005  
4
0.05  
AV=  
2
0.02  
0.01  
AV=2  
0.002  
0.001  
20  
50 100 200 500 1k 2k  
Frequency (Hz)  
5k 10k 20k  
20  
50 100 200 500 1k 2k  
Frequency (Hz)  
5k 10k 20k  
UNISONIC TECHNOLOGIES CO., LTD  
7
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
10  
5
V
R
DD  
=5  
V
L
=20kΩ  
Vin=1Vrms  
SE  
2
1
0.5  
0.1  
AV= 1  
0.05  
0.02  
0.01  
AV=  
4
0.005  
AV= 2  
0.002  
0.001  
20 50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
For VDD=3V, THD+N vs Frequency  
10  
10  
5
V
DD=3.3V  
V
R
DD=3.3V  
L=4Ω  
Ω
RL =8  
5
Po=0.4W  
BTL  
Po=0.65W  
BTL  
2
1
2
1
0.5  
0.5  
AV=8  
AV=2  
AV=8  
0.2  
0.1  
0.2  
0.1  
AV=2  
AV=4  
0.05  
0.05  
AV=4  
0.02  
0.01  
0.02  
0.01  
20 50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency(Hz)  
10  
5
10  
DD=3.3V  
RL =8Ω  
Po=100mW  
SE  
V
VDD=3.3V  
RL=32Ω  
PO=35mW  
SE  
5
2
1
2
1
0.5  
0.5  
0.2  
0.1  
0.2  
0.1  
AV=1  
AV=1  
AV=  
4
0.05  
0.05  
AV=4  
AV=2  
0.02  
0.01  
AV=2  
0.02  
0.01  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
20  
50 100200 500 1k 2k 5k 10k20k  
Frequency (Hz)  
UNISONIC TECHNOLOGIES CO., LTD  
8
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
10  
5
100  
50  
DD =3.3  
V
V
RL=20kΩ  
Vin=1V  
No filter  
p
2
1
SE  
A_wtd filter  
20  
10  
0.5  
0.2  
0.1  
5
AV=  
1
0.05  
V
DD=5V  
=8Ω  
V =2V/V  
R
L
AV=2  
AV=  
2
1
A
BTL  
0.02  
0.01  
4
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
100  
50  
0
No filter  
V
R
Po=1W  
DD =5V  
Ω
L=8  
-20  
-40  
-60  
A_wtd filter  
A
V
=2V/ V  
BTL  
20  
10  
5
-80  
f=1kHz  
V
R
DD=5V  
Ω
L
=10k  
2
1
-100  
A
SE  
V
=1V/  
V
f=20kHz  
-120  
20  
50 100 200 500 1k 2k  
Frequency (Hz)  
5k 10k 20k  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
12  
10  
8
0
V
R
DD =5V  
=32Ω  
Po=75mW  
=1V/V  
L
CF=0.22μF  
-20  
A
SE  
V
CF=0.1μF  
-40  
-60  
CF=0.068μF  
6
4
2
-80  
f=1kHz  
V
R
DD=5V  
=8Ω  
L
-100  
A
V
=2V/V  
BTL  
f=20kHz  
0
-120  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
20  
50 100 200 500 1k 2k 5k 10k 20k  
Frequency (Hz)  
UNISONIC TECHNOLOGIES CO., LTD  
9
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
0
-10  
-20  
V
R
DD  
=5V  
L
=8Ω  
Vin=200mVp  
Cb=2.2μF  
SE/BTL  
-30  
-40  
-50  
-60  
-70  
-80  
20  
50 100 200 500 1k 2k  
Frequency (Hz)  
5k  
20k  
10  
10  
5
V
R
DD=5V  
=3Ω  
BTL  
DD=5 V  
V
5
L
R
L
=4Ω  
BTL  
2
1
2
1
f=20kHz  
0.5  
f=20kHz  
f=1kHz  
0.5  
0.2  
0.1  
0.2  
0.1  
f=1kHz  
f=20Hz  
0.05  
0.05  
f=20Hz  
0.02  
0.01  
0.02  
0.01  
10m 20m 50m100m 200m500m 1  
2 3  
100m  
200m 300m 500m 800m1  
Output Power (W)  
2
3
Output Power (W)  
10  
10  
VDD =5V  
VDD =5V  
=8Ω  
BTL  
5
5
2
Ω
RL=16  
R
L
BTL  
2
1
1
f=20kHz  
0.5  
0.5  
f=20kHz  
0.2  
0.1  
0.2  
0.1  
f=1kHz  
f=20Hz  
f=1kHz  
f=20Hz  
0.05  
0.05  
0.02  
0.01  
0.02  
0.01  
1
10m 20m  
50m 100m 200m 500m  
Output Power (W)  
10m 20m 50m 100m 200m 500m  
1
2
Output Power (W)  
UNISONIC TECHNOLOGIES CO., LTD  
10  
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
10  
5
10  
5
V
R
DD =5V  
=8Ω  
V
R
DD=5V  
=32  
L
L
Ω
SE  
2
1
SE  
2
1
0.5  
0.5  
f=20kHz  
f=20Hz  
f=20kHz  
f=20Hz  
0.1  
0.2  
0.1  
0.05  
0.02  
0.01  
0.05  
f=1kHz  
f=1kHz  
0.005  
0.02  
0.01  
0.002  
0.001  
10m 20m 30m 50m 70m  
200m 500m  
10m  
20m 30m  
50m 70m 100m 200m  
Output Power (W)  
Output Power(W)  
10  
10  
5
V
RL  
DD=3.3V  
=8Ω  
BTL  
V
R
BTL  
DD=3.3V  
=4Ω  
5
2
L
2
1
1
f=20kHz  
f=20kHz  
f=1kHz  
0.5  
0.5  
0.2  
0.1  
f=1kHz  
f=20Hz  
0.2  
0.1  
0.05  
0.05  
f=20H  
z
0.02  
0.01  
0.02  
0.01  
10m 20m 30m 50m 80m  
200m 400m 800m  
10m 20m 50m 100m 200m 500m  
1
Output Power (W)  
Output Power (W)  
10  
5
10  
DD=3.3V  
V
V
R
DD=3.3V  
L =16Ω  
R
L
=16Ω  
5
Po=0.2W  
BTL  
BTL  
2
2
1
1
0.5  
f=20kHz  
f=1kHz  
0.5  
0.2  
0.1  
0.2  
0.1  
AV=8  
AV=2  
0.05  
0.05  
f=20H  
z
AV=4  
0.02  
0.01  
0.02  
0.01  
10m 20m 30m 50m 70m  
200m 500m  
20  
50 100 200  
500 1k 2k 5k 10k 20k  
(W)  
Output Power(W)  
Output Power  
UNISONIC TECHNOLOGIES CO., LTD  
11  
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
10  
5
10  
5
V
R
DD=3.3V  
=32Ω  
SE  
DD=3.3V  
V
L
R
L
=8Ω  
SE  
2
1
2
1
0.5  
0.5  
f=20kHz  
f=20Hz  
f=1kHz  
f=20kHz  
0.2  
0.1  
0.2  
0.1  
0.05  
0.05  
f=1kHz  
f=20Hz  
0.02  
0.01  
0.02  
0.01  
10m 12m 15m 20m 25m 30m35m 42m 55m  
Output Power(W)  
10m  
20m 30m  
50m 70m 100m 200m  
(W)  
Output Power  
0.2  
2
1.8  
1.6  
0.18  
0.16  
R
R
L
L
=3Ω  
=4Ω  
RL=8Ω  
0.14  
1.4  
1.2  
0.12  
0.1  
Ω
RL =16  
1.0  
0.8  
0.6  
0.4  
0.2  
0
0.08  
0.06  
0.04  
0.02  
0
Ω
RL=32  
VDD=5V  
V
DD=5V  
THD<1%  
SE  
THD<1%  
BTL  
0
0.05 0.1 0.15 0.2 0.25 0.3 0.35 0.4  
Output Power  
0
0.5  
1
1.5  
2
2.5  
Output Power (W)  
(W)  
0.7  
0.6  
R
L
=8Ω  
0.5  
0.4  
0.3  
0.2  
0.1  
0
R
L
=16Ω  
RL=32Ω  
DD =5V  
THD<1%  
BTL  
V
0
0.25  
0.5  
0.75  
1
1.25  
1.5  
Output Power (W)  
UNISONIC TECHNOLOGIES CO., LTD  
12  
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
10  
5
10  
5
V
R
SE  
DD=3.3V  
V
DD=5V  
Ω
L=20k  
Ω
L =20k  
R
2
SE  
2
1
1
0.5  
0.5  
0.1  
0.2  
0.1  
0.05  
f=20kHz  
f=1kHz  
0.02  
f=1kHz  
f=20Hz  
0.01  
0.05  
0.005  
f=20kHz  
0.02  
0.01  
f=20Hz  
0.002  
0.001  
300m  
100m 200m  
500m 800m 1  
2
3
100m  
200m 300m 500m 700m 1  
Output Volltage (V)  
2
Output Volltage (V)  
10  
5
10  
V
R
DD =5V  
=5kΩ  
docking  
V
R
DD=3.3V  
=5kΩ  
docking  
5
L
L
2
1
2
1
0.5  
0.5  
f=20kHz  
0.1  
0.2  
0.1  
0.05  
f=20kHz  
0.02  
0.01  
0.05  
f=1kHz  
f=20Hz  
0.02  
0.005  
f=1kHz  
f=20Hz  
0.002  
0.001  
0.006  
100m 200m 300m 500m 800m 1  
2
3
100m  
200m 300m 500m 700m 1  
Output Volltage (V)  
2
Output Volltage (V)  
0.8  
0.7  
0.6  
0.5  
0.4  
0.3  
0.2  
0.1  
0
3
VDD  
SE  
V
BTL  
DD=5V  
=5V  
2.5  
2
1.5  
1
THD=10%  
THD=10%  
0.5  
0
THD=1%  
THD=1%  
4
8 12 16 20 24 28 3236 40 44 48 52 56 60 64  
4
8 12 16 20 24 28 32 36 40 44 48 52 56 60 64  
Load Resistance (Ω)  
LoadResistance (Ω)  
UNISONIC TECHNOLOGIES CO., LTD  
13  
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
ꢀ
TYPICAL CHARACTERISTICS(cont.)  
0.34  
0.32  
0.3  
1.1  
1
V
SE  
DD=3.3V  
V
BTL  
DD=3.3V  
0.28  
0.26  
0.24  
0.22  
0.2  
0.9  
0.8  
0.7  
0.6  
0.18  
0.16  
0.14  
0.12  
0.1  
0.08  
0.06  
0.04  
0.5  
0.4  
0.3  
0.2  
0.1  
0
THD=10%  
THD=10%  
THD=1%  
THD=1%  
0.02  
0
4
8 12 16 20 24 28 32 36 40 44 48 52 56 60  
64  
4
8 12 16 20 24 28  
40 44 48 52 56 60 64  
32 36  
Load Resistance (Ω)  
Load Resistance (Ω)  
20  
20  
0
V
SE  
DD=5V  
No Load  
17.5  
15  
-20  
-40  
-60  
-80  
12.5  
BTL  
SE  
10  
7.5  
5
-100  
-120  
2.5  
0
0
0.5  
1
1.5  
2
2.5 3.0 3.5 4.0 4.5 5.0  
1
1.5  
2
2.5  
3
3.5  
4
4.5 5.0 5.5  
(V)  
Supply Voltage, VDD  
Voltage (V)  
2
V
RL  
DD=5V  
=8Ω  
BTL  
1.8  
1.6  
1.4  
1.2  
1.0  
0.8  
0.6  
0.4  
0.2  
0
THD=10%  
THD=1%  
2.5  
3
3.5  
4
4.5  
5
5.5  
Supply Voltage, VDD (V)  
UNISONIC TECHNOLOGIES CO., LTD  
14  
www.unisonic.com.tw  
QW-R502-024,C  
LM4835  
CMOS IC  
UTC assumes no responsibility for equipment failures that result from using products at values that  
exceed, even momentarily, rated values (such as maximum ratings, operating condition ranges, or  
other parameters) listed in products specifications of any and all UTC products described or contained  
herein. UTC products are not designed for use in life support appliances, devices or systems where  
malfunction of these products can be reasonably expected to result in personal injury. Reproduction in  
whole or in part is prohibited without the prior written consent of the copyright owner. The information  
presented in this document does not form part of any quotation or contract, is believed to be accurate  
and reliable and may be changed without notice.  
UNISONIC TECHNOLOGIES CO., LTD  
15  
www.unisonic.com.tw  
QW-R502-024,C  

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