LM4863_16 [UTC]
DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION;
| 型号： | LM4863_16 |
| 厂家： | 
Unisonic Technologies |
| 描述： | DUAL 2.2W AUDIO AMPLIFIER PLUS STEREO HEADPHONE FUNCTION 放大器 |
| 文件： | 总12页 (文件大小：413K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
UNISONIC TECHNOLOGIES CO., LTD
LM4863
CMOS IC
DUAL 2.2W AUDIO AMPLIFIER
PLUS STEREO HEADPHONE
FUNCTION
DESCRIPTION
The UTC LM4863 is a dual bridge-connected audio power
amplifier. It combines dual bridge speaker amplifiers and stereo
headphone amplifiers on one chip to simplify audio system design.
In addition, the headphone input pin allows the amplifiers to
operate in single-ended mode when driving stereo headphones.
The IC could deliver different power by packages as below (when
connected to a 5V supply with less than 1.0% THD+N.):
-
-
-
HTSSOP-20, 4Ω load: 2.2W
HTSSOP-20, 3Ω load: 2.5W(with forced-air cooled)
SOP/DIP
, 8Ω load: 1.1W.
The UTC LM4863 features an externally controlled, low-power
consumption shutdown mode, a stereo headphone amplifier mode,
and thermal shutdown protection. It also utilizes circuitry to reduce
“clicks and pops” during device turn-on.
FEATURES
* “Click and pop” suppression circuitry
* Thermal shutdown protection circuitry
* Unity-gain stable
* Stereo headphone amplifier mode
ORDERING INFORMATION
Ordering Number
Package
Packing
Lead Free
Halogen Free
LM4863G-D16-T
LM4863G-S18-R
LM4863G-N20-R
LM4863L-D16-T
DIP-16
SOP-18
Tube
-
-
Tape Reel
Tape Reel
HTSSOP-20
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MARKING
Packing
MARKING
DIP-16
SOP-18
HTSSOP-20
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PIN CONFIGURATION
SOP-18
DIP-16
SHUTDOWN
GND
HP-IN
GND
16
15
14
13
12
11
HP-IN
18
17
16
15
14
13
12
11
10
1
2
3
4
5
6
7
8
9
1
2
3
4
5
6
7
8
SHUTDOWN
GND
GND
+OUT A
VDD
+OUT B
VDD
+OUT B
VDD
+OUT A
VDD
-OUT A
-IN A
-OUT B
-IN B
-OUT B
-IN B
-OUT A
-IN A
GND
+IN A
GND
GND
10
9
BYPASS
+IN B
BYPASS
+IN B
+IN A
GND
PIN DESCRIPTION
PIN NO.
PIN NAME I/O
PIN DESCRIPTION
DIP-16 SOP-18
4,13 4,15
HTSSOP-20
4,17
VDD
GND
-
-
-
Supply voltage
Ground
Internal mid-supply bias reference bypassing
2,7,15 2,7,9,10,17 2,7,9,10,11,12,19
10
12
14
BYPASS
Entire IC into the shutdown mode when this pin connected
to the VDD
1
1
1
SHUTDOWN
HP-IN
I
I
Output mode select, connected to the VDD for SE mode or
GND for BTL mode
16
18
20
Non-inverting input of channel A, connected to BYPASS
pin inside the IC
8
6
8
6
8
6
+INA
-INA
I
I
Inverting input of channel A
Channel A + output in BTL mode, high impedance in SE
mode
3
3
3
+OUTA
-OUTA
+INB
O
O
I
5
5
5
Channel A - output in BTL mode, + output in SE mode
Non-inverting input of channel B, connected to BYPASS
pin inside the IC
9
11
13
16
14
13
15
18
16
11
14
12
-INB
I
Inverting input of channel B
Channel B + output in BTL mode, high impedance in SE
mode
+OUTB
-OUTB
O
O
Channel B - output in BTL mode, + output in SE mode
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ABSOLUTE MAXIMUM RATINGS
PARAMETER
SYMBOL
VDD
RATINGS
6.0
UNIT
Supply Voltage
V
V
V
Recommended Supply Voltage Range
Input Voltage
VDD
2.0 ~ 5.5
VIN
-0.3 ~ VDD+0.3
Internally limited
+125
Power Dissipation
PD
Junction Temperature
Operating Temperature
Storage Temperature
TJ
°С
°С
°С
TOPR
TSTG
-40 ~ +85
-65 ~ +150
Note Absolute maximum ratings are those values beyond which the device could be permanently damaged.
Absolute maximum ratings are stress ratings only and functional device operation is not implied.
THERMAL DATA
PARAMETER
SYMBOL
RATINGS
UNIT
°С/W
°С/W
°С/W
°С/W
°С/W
SOP-18
80
63
90
20
2
Junction to Ambient
Junction to Case
θJA
DIP-16
HTSSOP-20
DIP-16/SOP-18
HTSSOP-20
θJC
ELECTRICAL CHARACTERISTICS (Notes 1)(VDD=5V, TA =25°С, unless otherwise specified)
PARAMETER
SYMBOL
TEST CONDITIONS
MIM TYP MAX UNIT
FOR ENTIRE IC
Supply Voltage
Headphone Input
Voltage
VDD
VIH
VIL
2
4
5.5
V
V
V
High
Low
0.8
11.5 20
5.8
Quiescent Power Supply Current
(Note 2)
VIN=0V, IOUT=0A, HP-IN=0V
VIN=0V, IOUT=0A, HP-IN=4V
VDD applied to the SHUTDOWN pin
6
2
IDD
ISD
VO(OFF)
mA
Shutdown Current
0.7
μA
FOR BRIDGED-MODE OPERATION
Output Offset Voltage
VIN=0V
5
50
mV
W
RL=3Ω
THD=1%, f=1kHz
RL=4Ω
2.5
2.2
3.2
2.7
1.1
HTSSOP-20
Output Power
(measured at the device
terminals)
DIP-16
THD+N=10%,
f=1kHz
RL=3Ω
RL=4Ω
POUT
THD=1%, f=1kHz RL=8Ω
1.0
W
W
THD+N=10%,
RL=8Ω
1.5
0.34
0.3
SOP-18
f=1kHz
THD+N=1%, f=1kHz, RL=32Ω
HTSSOP-20
RL=4Ω, POUT=2W
RL=8Ω, POUT=1W
Total Harmonic
Distortion + Noise
20Hz≤f≤20kHz,
AVD=2
THD+N
PSRR
%
DIP-16
SOP-18
0.3
67
VDD=5V, VRIPPLE=200mVRMS, RL=8Ω,
CB=1.0μF
Power Supply Rejection Ratio
dB
Channel Separation
Signal To Noise Ratio
XTALK
SNR
f=1kHz, CB=1.0μF
90
98
dB
dB
VDD=5V, POUT=1.1W, RL=8Ω
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ELECTRICAL CHARACTERISTICS(Cont.)
PARAMETER
SYMBOL
VO(OFF)
POUT
TEST CONDITIONS
MIM TYP MAX UNIT
FOR SINGLE-ENDED OPERATION
Output Offset Voltage
VIN=0V
5
50
mV
THD=0.5%, f=1kHz, RL=32Ω
THD+N=1%, f=1kHz, RL=8Ω
THD+N=10%, f=1kHz, RL=8Ω
AV=-1, POUT=75mW,20Hz≤f≤20kHz,
RL=32Ω
75
85
Output Power
mW
340
440
Total Harmonic Distortion + Noise
Power Supply Rejection Ratio
THD+N
PSRR
0.2
52
%
CB=1.0μF, VRIPPLE=200mVRMS,
f=1kHz
dB
Channel Separation
Signal To Noise Ratio
XTALK
SNR
f=1kHz, CB=1.0μF
60
95
dB
dB
VDD=5V, POUT=340mW, RL=8Ω
Note:1. All voltages are measured with respect to the ground (GND) pins, unless otherwise specified.
2. Depends on the offset voltage when a practical load is connected to the amplifier.
3. When driving 3Ω or 4Ω and operating on a 5V supply, the HTSSOP-20 package must be mounted to the
circuit board that has a minimum of 2.5 in2 of exposed, uninterrupted copper area connected to the
exposed-DAP.
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TYPICAL APPLICATION CIRCUIT
VDD
CS
0.1µF
TANT
+
CI
1μF
RF
20KΩ
CO
100µF
4,13
Audio
Input
6
8
- IN A
-
+
-OUT A
20KΩ
5
3
+
AMP 1A
+IN A
CONTROL PIN
RI
20KΩ
RL
8Ω
RING
20KΩ
1kΩ
50KΩ
20KΩ
AMP 2A
Bypass
10
-
+
To HP-IN Circuit
VDD/2
CB
(CB size)
+OUT A
CI
1μF
CO
100µF
+
0.33μF
SLEEVE
50KΩ
TIP
RI
Audio
Input
11
9
-IN B
+IN B
-OUT B
-
+
HEADPHONE JACK
12
14
AMP 1B
20KΩ
20KΩ
20KΩ
RL
20KΩ
VDD
RF
20KΩ
1kΩ
8Ω
-
+
AMP 2B
100kΩ
To Control Pin on
Headphone jack
1
Shutdown
HP-IN
+OUT B
16
100KΩ
2,7,15
GND
Note: Pin out shown for DIP-16. Refer to the PIN CONFIGURATION for the pin out of other packages.
Figure 1.Typical Audio Amplifier Application Circuit
EXTERNAL COMPONENTS DESCRIPTION
Components
Functional Description
The inverting input resistance, along with RF, set the closed-loop gain. RI, along with CI form a high
pass filter with fc=1/(2πRICI)
RI
CI
The input coupling capacitor blocks DC voltage at the amplifier’s input terminals. CI, along with RI,
create a high pass filter with fc=1/(2πRICI). Refer to the section. Selecting Proper External
Components, for an explanation of determine the value of CI.
RF
CS
The feedback resistance, along with RI, set the closed-Ioop gain.
The supply bypass capacitor. Refer to the Power Supply Bypassing section for information about
properly placing and selecting the value of, this capacitor.
The capacitor, CB, filters the half-supply voltage present on the Bypass pin. Refer to the Selecting
Proper External Components section for information concerning proper placement and selecting
CB’S value.
CB
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TYPICAL CHARACTERISTICS
(For HTSSOP-20)
THD+N vs Frequency
THD+N vs Output Power
10
1
10
1
VDD=5V, RL=4Ω
POUT=2.0W, BW<80kHz
VDD=5V, RL=4Ω
BW<80kHz
20Hz
20KHz
0.1
0.1
1KHz
0.01
0
0.01
0
10m
0.1
Level (W)
1
3
20
100
1k
10k 20k
Frequency (Hz)
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TYPICAL CHARACTERISTICS(Cont.)
(For DIP-16 and SOP-18)
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TYPICAL CHARACTERISTICS(Cont.)
THD+N vs Output Power
THD+N vs Frequency
10
10
1
VDD=-3.3V, AVD= -2
RL=4Ω
VDD=3.3V, AVD=-2
OUT=750mW, RL=4Ω
P
f=20kHz
f=20Hz
1
0.1
0.01
0.1
f=1kHz
0.01
10m
20k
10k
0.1
1
2
20
100
1k
Level (W)
Frequency (Hz)
Power Dissipation vs Supply Voltage
Output Power vs Load Resistance
1000
800
600
400
200
0
800
600
400
200
0
VDD=3.3V, AV= -1
f=1kHz, BW<80kHz
VDD=3.3V
Single-ended
4Ω
8Ω
THD+N=10%
THD+N=1%
16Ω
0
20
Load Resistance (Ω)
10
30
40
250
500
750
0
1000
Power Out (mW)
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TYPICAL CHARACTERISTICS(Cont.)
Output Power vs Load resistance
Output Power vs Supply Voltage
1
0.8
0.6
0.4
0.2
0.7
0.6
0.5
0.4
0.3
0.2
0.1
0
VDD=5V
f=1kHz
AV=-1
Single Ended
BW<80kHz
RL=8Ω
RL=16Ω
VDD=5V
f=1kHz
10% THD+N
1% THD+N
THD+N∞1.0%
Bridged Load
BW<80kHz
RL=32Ω
0
2
0
20
Load Resistance (Ω)
2.5
0.5 0.75
Output Power (W)
1
10
30 40 50 60 70
1.25
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TYPICAL CHARACTERISTICS(Cont.)
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TYPICAL CHARACTERISTICS(Cont.)
Supply Current vs Supply Voltage
15
12
9
VIN=0V
No Load
BRIDGED
(HP-IN=GND)
6
3
SINGLE-ENDED
(HP-IN=VDD
)
0
3.5
4
4.5
5
5.5
2
2.5
3
Supply Voltage (V)
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.
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