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MOSA
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Dual 2W Power Amplifiers / Stereo Headphone Low Voltage, Pop Noise Free Function
FEATURES
Operation range: 2.7V~5.5V Shutdown Current 0.4uA at 5V Output power, THD+N=1% BTL, RL=3, 2.3W at 5V BTL, RL=4, 2W at 5V, 0.8W at 3.3V, 500mW at 2.7V BTL, RL=8, 1.2W at 5V, 0.5W at 3.3V, 350mW at 2.7V SE, RL=8, 300mW at 5V,130mW at 3.3V, 85mW at 2.7V SE, RL=32, 90mW at 5V, 40mW at 3.3V, 25mW at 2.7V Headphone sense Unity-gain stable pop noise free control (extra function for pin7) Space-saving TSSOP20, enhance thermal pad
APPLICATIONS
Desktop computer's sound card Portable audio devices Portable digital TV MP3 peripheral Handheld games Cross-reference: LM4863
DESCRIPTION
The MS6863 is a low distortion power amplifier that can drive 2*2W of continuous average power into a dual 4 bridged-tied load (BTL) or 2 * 90mW into stereo 32 single ended (SE) loads headphone. It can automatically switch between dual BTL and stereo SE modes utilizing a headphone sense pin. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications. The unity gain stable MS6863's gain is set by external gain-setting resistors. The MS6863 has good feature for portable equipment, these features include the low voltage operation, micropower consumption shutdown mode, enhance thermal pad and small package TSSOP20, make the MS6863 ideally suited for use in portable audio equipments. The MS6863 has an extra selection for pin7 to achieve pop noise free in shutdown control.
BLOCK DIAGRAM
VDD -INA +INA + -OUT A
A1
BYPASS
+
A2
+OUT A
-INB +INB SD HP-IN
Power Manage
+
B1
-OUT B
+
B2
+OUT B
GND
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PIN CONFIGURATION
Symbol SD +OUTA -OUTA -INA +INA +INB BYPASS -INB -OUTB +OUTB HP-IN VDD GND GND (SDPR) Pin 1 3 5 6 8 13 14 15 16 18 20 4, 17 2, 9, 10 11, 12, 19 7
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Description SHUTDOWN places the entire device in shutdown mode when held high. TTL compatible input. Bridged-tied load positive output A. Left channel output or bridged-tied load negative output A. Negative input A. Positive input A. Positive input B. BYPASS is a capacitor to the voltage divider for the internal mid-supply bias. This terminal should be connected to a 0.1-F to 10-F capacitor CB.
B
Negative input B Right channel output or bridged-tied load negative output B. Bridged-tied load positive output B. Headphone input detection. A logical low sets BTL mode, a logical high sets SE mode. Supply voltage Ground Connected to ground, it is compatible for LM4863 SDPR: Shutdown Power Preparation. Pop noise free in shutdown control, please refer to application information
TSSOP20
SD GND +OUTA VDD -OUTA -INA GND(SDPR) +INA GND
1 2 3 4 5 6 7 8 9 Thermal Pad
20 19 18 17 16 15 14 13 12 11 MS6863
HP-IN GND +OUTB VDD -OUTB -INB BYPASS +INB GND GND
GND 10
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ORDERING INFORMATION
Package 20Pin TSSOP (lead free) 20Pin TSSOP (lead free) Part number MS6863TGTR MS6863TGU MS6863G MS6863G
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Packaging Marking
Transport Media 2.5Units Tape and Reel 75Units Tube
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VESD TSTG TA TJ TS RTHJA Supply voltage Electrostatic handling Storage temperature range Operating ambient temperature range Maximum junction temperature Soldering temperature, 10 seconds Thermal resistance from junction to ambient in free air TSSOP20 (enhance thermal pad) Parameter Rating 6 2000 -65 to 150 -40 to 85 150 260 51 Unit V V /W
OPERATING RATINGS
Symbol VDD Supply voltage Parameter Min 2.7 Typ 5 Max 5.5 Unit V
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5V ELECTRICAL CHARACTERISTICS
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Ta = 25C, VDD=5V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISD VSDH VSDL CS Quiescent current Shutdown current Shutdown input voltage high Shutdown input voltage low Channel separation BTL Mode, RL=8 Po=1W SE Mode, RL=32 Po=60mW BTL Mode , RL=8 CBP=1uF, f=100Hz SE Mode , RL=32 CBP=10uF, f=100Hz SE mode, RL=32, 75mW SE mode, A-weighting BTL Mode, RL = 3 THD+N = 1% BTL Mode, RL = 4 THD+N = 1% Po Output power BTL Mode, RL = 8 THD+N = 1% SE Mode, RL =8 THD+N = 1% SE Mode, RL = 32 THD+N = 1% BTL Mode, VIN=0V, IO=0A SE Mode, VIN=0V, IO=0A SD Mode, VSD=VDD
Min 2.0 90 -
Typ 5.9 3.1 0.4 95 90 63 55 -75 0.018 95 2.3 2 1.3 300m 90m
Max 2 0.8 -68 0.04 -
Unit mA mA uA V V dB dB dB dB dB % dB W W W W W
PSRR
Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio
THD+N S/N
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3.3 V ELECTRICAL CHARACTERISTICS
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Ta = 25C, VDD=3.3V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISD CS Quiescent current Shutdown current Channel separation BTL Mode, VIN=0V, IO=0A SE Mode, VIN=0V, IO=0A SD Mode, VSD=VDD BTL Mode, RL=8 Po=120mW SE Mode, RL=32 Po=25mW BTL Mode , RL=8 CBP=1uF, f=100Hz SE Mode , RL=32 CBP=10uF, f=100Hz SE mode, RL=32, 25mW SE mode, A-weighting BTL Mode, RL = 4 THD+N = 1% BTL Mode, RL = 8 THD+N = 1% SE Mode, RL =8 THD+N = 1% SE Mode, RL = 32 THD+N = 1%
Min 89 -
Typ 5.4 2.8 0.2 83 86 60 53 -73 0.022 94 0.8 0.5 130m 40m
Max -65 0.056 -
Unit mA mA uA dB dB dB dB dB % dB W W W W
PSRR
Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio
THD+N S/N
Po
Output power
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2.7 V ELECTRICAL CHARACTERISTICS
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Ta = 25C, VDD=2.7V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISD CS Quiescent current Shutdown current Channel separation BTL Mode, VIN=0V, IO=0A SE Mode, VIN=0V, IO=0A SD Mode, VSD=VDD BTL Mode, RL=8 Po=80mW SE Mode, RL=32 Po=15mW BTL Mode , RL=8 CBP=1uF, f=100Hz SE Mode , RL=32 CBP=10uF, f=100Hz SE mode, RL=32, 15mW SE mode, A-weighting BTL Mode, RL = 4 THD+N = 1% BTL Mode; RL = 8 THD+N = 1% SE Mode; RL = 8 THD+N = 1% SE Mode; RL = 32 THD+N = 1%
Min 87 -
Typ 5.1 2.7 0.1 83 85 60 52 -72 0.025 92 0.5 0.35 85m 25m
Max -64 0.063 -
Unit mA mA uA dB dB dB dB dB % dB W W W W
PSRR
Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio
THD+N S/N
Po
Output power
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TYPICAL PERFORMANCE CHARACTERISTICS
Ta = 25C, BW<30kHz, unless otherwise specified.
VDD=5V BTL mode RL=4 VDD=3.3V BTL mode RL=4
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
VDD=2.7V BTL mode RL=4
THD+N (%)
THD+N (%)
THD+N (%)
Po=2W
Po=0.8W
Po=0.5W
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
VDD=5V BTL mode RL=8
VDD=3.3V BTL mode RL=8
VDD=2.7V BTL mode RL=8
THD+N (%)
Po=1.2W
Po=0.5W
THD+N (%)
THD+N (%)
Po=0.35W
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
VDD=5V SE mode RL=32
VDD=3.3V SE mode RL=32
VDD=2.7V SE mode RL=32
THD+N (%)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N (%)
THD+N (%)
Po=60mW
Po=25mW
Po=15mW
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
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VDD=5V BTL mode RL=4 f=20kHz VDD=3.3V BTL mode RL=4 f=20kHz
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
VDD=2.7V BTL mode RL=4 f=20kHz
THD+N (%)
THD+N (%)
f=1kHz
THD+N (%)
f=1kHz
f=1kHz
f=20Hz
f=20Hz
f=20Hz
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
THD+N vs. output power
THD+N vs. output power
THD+N vs. output power
f=20kHz
f=20kHz
f=20kHz
THD+N (%)
THD+N (%)
f=20Hz
f=20Hz
THD+N (%)
f=1kHz
f=1kHz
f=1kHz
f=20Hz
VDD=5V BTL mode RL=8
VDD=3.3V BTL mode RL=8
VDD=2.7V BTL mode RL=8
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
THD+N vs. output power
THD+N vs. output power
THD+N vs. output power
f=20kHz f=20kHz
f=20kHz
THD+N (%)
THD+N (%)
f=1kHz
f=1kHz
f=20Hz f=20Hz VDD=5V SE mode RL=32 VDD=3.3V SE mode RL=32 VDD=2.7V SE mode RL=32
THD+N (%)
f=1kHz
f=20Hz
OUTPUT POWER (W)
OUTPUT POWER (W)
OUTPUT POWER (W)
THD+N vs. output power
THD+N vs. output power
THD+N vs. output power
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CBP=1uF
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
CBP=1uF
CBP=1uF
PSRR (dB)
PSRR (dB)
CBP=10uF
CBP=10uF
PSRR (dB)
CBP=10uF
VDD=5V BTL mode RL=8
VDD=3.3V BTL mode RL=8
VDD=2.7V BTL mode RL=8
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR vs. frequency
PSRR vs. frequency
PSRR vs. frequency
CBP=10uF
CBP=10uF
CBP=10uF
PSRR (dB)
PSRR (dB)
CBP=1uF VDD=5V SE mode RL=32
CBP=1uF VDD=3.3V SE mode RL=32
PSRR (dB)
CBP=1uF VDD=2.7V SE mode RL=32
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR vs. frequency
PSRR vs. frequency
PSRR vs. frequency
CHANNEL SEPARATION (dB)
BTL mode
SE mode RL=32 Po=60mW
CHANNEL SEPARATION (dB)
QUIESCENT CURRENT (mA)
BTL mode RL=8 Po=1W
BTL mode RL=8 Po=80mW
SE mode RL=32 Po=15mW
SE mode
VDD=5V
VDD=2.7V
SUPPLY VOLTAGE (V)
FREQUENCY (Hz)
FREQUENCY (Hz)
Quiescent current vs. supply voltage
Channel separation vs. frequency
Channel separation vs. frequency
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APPLICATION INFORMATION
Application example This example is compatible for LM4863.
20K RF 1uF 20k RIN VINA 0.33uF 1uF 20k RIN VINB MCU 100k 1 8 14 13 15
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
6
-OUTA -INA +INA BYPASS +INB -INB VDD +OUTA
5
100uF
3
RL 8 VDD
1k
4,17 1uF
MS6863
GND 2,7,19 Headphone Jack
SD
-OUTB
16 RL 8
100uF
VDD
20
HP-IN
+OUTB
1k
18
20K RF
DC Gain = -RF / RIN = -1 Fig.1 A audio amplifier application circuit.
SE mode and BTL mode operation As shown in block diagram and Fig.1, in the SE mode, the MS6863 operates as high current output dual operational amplifiers. Amplifiers A1 and B1 are independent amplifiers with an externally configured gain of AV = - RF/RIN. As amplifiers A2 and B2 are shutdown, then the amplifiers will be a high output impedance state. In BTL mode, the audio signal from the -INA (-INB) pin is directed to the inverting input of A1(B1). The A2(B2) is then activated with a closed-loop gain of AV = -1 fixed by two internal resistors. The outputs of A1(B1) and A2(B2) are then used to drive the bridged-tied load. HP-IN operation The ability of the MS6863 is easily switched between dual BTL and stereo SE modes. The mode is switched by the headphone control pin, HP-IN. A logic-high activates the SE mode when a set of headphone plugged into the system, on the other hand, a logical-low to HP-IN activates the BTL mode when no headphones. SHUTDOWN mode SD places the entire device in shutdown mode when held high. Thermal pad considerations The thermal pad must be connected to ground. The package with thermal pad of the MS6863 requires the special attention on thermal design. The thermal pad on the bottom of the MS6863 should be soldered down to a copper pad on the circuit board. Heat can be conducted away from the thermal pad through the copper plane to ambient. If the copper plane is not on the top surface of the circuit board, 9 vias of 13 mil or smaller in diameter should be used to thermally couple the thermal pad to the bottom plane. For good thermal conduction, the vias must be plated through and solder filled.
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Pop noise free example Use extra function of pin7 and control timing.
20K RF 1uF 20k RIN VINA 4.7uF 1uF 20k RIN VINB MCU 100k 1 7 20 SD SDPR HP-IN 8 14 13 15
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
6
-OUTA -INA +INA BYPASS +INB -INB VDD +OUTA
5
100uF
3
RL 8 VDD
1k
4,17 1uF
MS6863
GND
2,19 Headphone Jack
-OUTB
16 RL 8
100uF
VDD
+OUTB
1k
18
20K RF
Fig.2 A pop noise free application circuit.
SDPR (Pin7)
Shutdown
Delay time
0.1s
Fig.3 A control timing for pop noise free
Pop noise free in shutdown control According to the control timing figure3, it can reduce pop noise efficiently during the shutdown control. The timing can be applied to BTL and SE mode. The delay time is decided by the value of the bypass capacitor.
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EXTERNAL DIMENSIONS
TSSOP20 (Thermal Pad)
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
Symbol A A1 A2 b C D E E1
Dimension in mm Min
0.80 0.00 0.80 0.19 0.09 6.40 6.20 4.3 0.45 0o -
Dimension in inches Min
0.031 0.000 0.031 0.007 0.004 0.252 0.244 0.169 0.018 0o -
Nom
1.00 6.50 6.40 4.4 0.650 BASIC 0.60 -
Max
1.15 0.10 1.05 0.30 0.20 6.60 6.60 4.5 0.75 8o 0.10
Nom
0.039 0.256 0.252 0.173 0.026 BASIC 0.024 -
Max
0.045 0.004 0.041 0.012 0.008 0.260 0.260 0.177 0.030 8o 0.004
e
L y
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DEMO BOARD
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
4
1
3 3 5
6
2
Function description
2
Label 1: Supply Input Supply voltage range is 2.7V to 5.5V, the left of jump is positive, the right of jump is negative. Label 2: Signal Input Connected to audio signals. Label 3: Speaker Output Connected to speaker with 8ohm or 4 ohm Label 4: Headphone Jack Used 3.5mm diameter of headphone with 32ohm Label 5: Shutdown Control System is active mode when jump is close, system enters shutdown mode when jump is open. Label 6: Shutdown Power Preparation It is compatible for LM4863 when jump is close. This is the same as connect to ground. When jump is open, it can be used the extra function of the MS6863. The details please refer to application information.
SE mode and BTL mode operation The headphone controls operational mode. System enters SE mode when headphone jack is empty. When a set of headphone plugged into the jack, the system switched to BTL mode.
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Circuit
JP1 1 2 VDD 0.1u C1 + C2 100u R1 100K R2 100K 1 2 SD
MS6863
Dual 2W Power Amplifiers with Stereo Headphone
JP2
JP3 1 2 -INB JP4 + R4 20K R5 20K R3 100K R6 20K HP-IN GND +OUTB VDD -OUTB -INB BP +INB GND GND 20 19 18 17 16 15 14 13 12 11 LS1 JP5 SPEAKER + C6 100u J1 C7 R8 1K + 0.33u 2 1 R9 1K HEAD PHONE 1 2 OUTA JP6 1 2 OUTB U1 1 2 3 4 5 6 7 8 9 10 SD GND +OUTA VDD -OUTA -INA GND +INA GND GND MS6863 1 2 -INA + R7 20K LS2 SPEAKER C3 100u + JP7 PDP C5 1u
C4 1u
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