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MOSA
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
FEATURES
*Operation range: 2.7V~5.5V *16-bit resolution audio DAC *Output mode : Speaker( BTL)/Headphone(SE) *Output power, THD+N=1% Mode RL 5V 3.3V 2.7V 4 1.8W 0.72W 450mW BTL 8 1.2W 0.52W 330mW 8 0.3W 125mW 85mW SE 32 90mW 43mW 25mW *Component less *No zero crossing distortion *Fast setting time permits 2*, 4*, and 8* oversampling (serial input) or double speed operation at 4* oversampling Audio formatI2S, Right justified The minimum HIGH voltage of digital clocks(WS,DATA and BCK)and the control inputs can be 1.6V at Vdd = 5V. *Excellent Power Supply Rejection Ratio(PSRR) *Low power consumption *Shutdown function *Output voltages can be adjusted by the external resisters * Housed in 24 pin SSOP(150mil), QFN(4x4x0.8)packages
APPLICATIONS
*Multimedia system, Portable Digital Audio.
DESCRIPTION
The MS6337 is a 16-bits voltage-output Digital-to-Analog Converter (DAC) integrated class AB stereo headphone driver and mono speaker power amplifier. It can drive 1.8W of continuous average power into a mono 4 bridged-tied (BTL) speaker or 2 * 90mW into stereo 32 single ended (SE) headphone. The 16-bit DAC supports popular formats as I2S, Right Justified. The MS6337 is with the excellent Power Supply Rejection Ratio(PSRR) and features extremely low power dissipation, small package size and easy application. The accuracy of the matched coarse current sources, combined with the unique symmetrical decoding method, preclude zero-crossing distortion and ensures high quality audio reproduction. These unique features, combined with its exceptional performance, make the MS6337 ideally suited for use in digital audio equipment.
BLOCK DIAGRAM
Shutdown control SD_Mode 0 0 1 1 SD 0 1 0 1 Status SD On On SD
DV DD DVss LIN
MS6337 Supply
BCK WS DAC DATA FORMAT(I2S/RJF) DAC_SD DAC Shutdown B1 + HPIN Mono / Stereo Mode Switching Circuitry
400K
V DD A1 +
400K
LOUT/BTL400K
Format control FORMAT 0 1 Status I2S RJF
A2 +
BTL+ V DD
400K
ROUT
DAC control DAC_SD 0 1 Status SD Active
CAP control Status CAP_DC 0 Discharge 1 Charge
SD SD_MODE CAP
390K
Click/Pop Reduction Bias
Power Amplifier Supply
Supply
CAP_DC
RIN
PV DDL
PV DDR
PV SSL
PV SSR AV DD AV SS
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PIN CONFIGURATION
SSOP24 Symbol PVDDL LOUT/BTLAVSS PVSSL LIN SD_MODE SD AVSS DVSS /DAC_SD DATA WS BCK FORMAT DVDD AVDD /CAP_DC HPIN CAP RIN PVSSR ROUT PVDDR BTL+ Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Description Positive supply voltage for left channel of power amplifier SE left channel output or negative output of BTL Negative supply voltage Negative supply voltage for left channel of power amplifier Left channel input The shutdown mode selects the shutdown logic level of the SD pin. SD_MODE = 0, the device is shutdown when SD is logic low. SD_MODE = 1, the device is shutdown when SD is logic high. Negative supply voltage Digital Ground DAC shutdown pin. /DAC_SD=0, DAC is shutdown. /DAC_SD=1, DAC is Active. Audio data input Audio word select input Audio bit clock input Audio format. FORMAT=0, I2S format. Digital Positive supply voltage Analog Positive supply voltage CAP discharge. This pin is functional only as the system is shutdown. Headphone input detection.(refer to Page.14 for detection levels) A logical low sets BTL mode, a logical high sets SE mode. Capacitor connected Right channel input Negative supply voltage for right channel of power amplifier SE right channel output Positive supply voltage for right channel of power amplifier Positive output of BTL FORMAT=1, Right justified format.
MS6337, SSOP24
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QFN20 Symbol AVDD /CAP_DC HPIN CAP RIN PVSSR ROUT PVDDR BTL+ PVDDL LOUT/BTLAVSS PVSSL LIN SD_MODE SD AVSS DVSS /DAC_SD DATA WS BCK FORMAT DVDD Pin 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 Analog Positive supply voltage
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Description CAP discharge. This pin is functional only as the system is shutdown. Headphone input detection.(refer to Page.14 for detection levels) A logical low sets BTL mode, a logical high sets SE mode. Capacitor connected Right channel input Negative supply voltage for right channel of power amplifier SE right channel output Positive supply voltage for right channel of power amplifier Positive output of BTL Positive supply voltage for left channel of power amplifier SE left channel output or negative output of BTL Negative supply voltage Negative supply voltage for left channel of power amplifier Left channel input The shutdown mode selects the shutdown logic level of the SD pin. SD_MODE = 0, the device is shutdown when SD is logic low. SD_MODE = 1, the device is shutdown when SD is logic high. Negative supply voltage Digital Ground DAC shutdown pin. /DAC_SD=0, DAC is shutdown. /DAC_SD=1, DAC is Active. Audio data input Audio word select input Audio bit clock input Audio format. FORMAT=0, I2S format. Digital Positive supply voltage FORMAT=1,Right justified format.
AVDD CAP_DC HPIN CAP RIN PVSSR
1 2 3 4 5 6
18 17 16 15 14 13
DVSS AVSS SD SD_MODE LIN PVSSL
MS6337, QFN24
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ORDERING INFORMATION
Package 24-Pin SSOP (lead free) 24-Pin SSOP (lead free) 24-Pin QFN (lead free) RoHS Compliance Part number MS6337GTR MS6337GU MS6337QTR MS6337G MS6337G 6337
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Packaging Marking
Transport Media 2.5k Units Tape and Reel 56 Units Tube 5k Units Tape and Reel
ABSOLUTE MAXIMUM RATINGS
Symbol VDD VESD TSTG TA TJ TS RTHJA Positive 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 SSOP24 QFN24enhance thermal pad Parameter Rating 6 -2000 to 2000 -40 to 125 -40 to 85 120 260 90 65 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
Symbol DC Characteristics VCAP VFS IQ ISD VHP Voltage at CAP Full scale output voltage Quiescent current Shutdown current Headphone hysteresis point BTL Mode Resolution Power supply rejection ratio Channel separation Total harmonic distortion plus Noise Signal-to-noise ratio Parameter
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
(Ta=25, VDD=5V, VSS=0V, f=1kHz ,RF=24K [refer to Fig. 4], BW<30kHz; Unless otherwise specified) Conditions Min 2.35 VFS=0.015775* RF *VDD Audio code 0000H, BTL Audio code 0000H, SE All devices shutdown SE Mode VFS-10% 6 4.4 11 3.8 BTL Mode , RL=8 CAP=1uF, f=200Hz SE Mode , RL=32 CAP=1uF, f=200Hz SE Mode, RL=32, VFS SE mode, RL=32, VFS SE mode, A-weighting, VFS 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% 86 Typ. 2.5 VFS 8 5.5 17 61 66 90 -64 0.062 90 1.8 1.2 300m 90m -60 0.1 Max 2.65 VFS+10% 12 6.6 25 V 3.2 16 bits dB dB dB dB % dB W W W W Unit V V mA uA
AC Characteristics Res PSRR CS THD+N S/N
Po
Output power
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3.3V ELECTRICAL CHARACTERISTICS
Symbol DC Characteristics VCAP VDC VFS IQ ISD VHP Voltage at CAP Output DC level Full scale output voltage Quiescent current Shutdown current Headphone hysteresis point BTL Mode Parameter
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
(Ta=25, VDD=3.3V, VSS=0V, f=1kHz, RF=24K [refer to Fig, 4] ; Unless otherwise specified) Conditions Min 1.55 1.55 VFS=0.015775* RF *VDD Audio code 0000H, BTL Audio code 0000H, SE All devices shutdown SE Mode VFS-10% 5.4 3.8 7.3 2.3 Typ. 1.65 1.65 VFS 6.6 4.8 11.2 -63 0.07 0.72 0.52 125m 43m Max 1.75 1.75 VFS+10% 9.9 5.8 16.5 V 1.9 -58 0.126 dB % W W W W Unit V V V mA mA uA
AC Characteristics THD+N Total harmonic distortion plus noise SE mode, RL=32, VFS 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%
Po
Output power
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2.7V ELECTRICAL CHARACTERISTICS
Symbol DC Characteristics VCAP VDC VFS IQ ISD VHP Voltage at CAP Output DC level Full scale output voltage Quiescent current Shutdown current Headphone hysteresis point BTL Mode Parameter
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
(Ta=25, VDD=2.7V, VSS=0V, f=1kHz, RF=24K [refer to Fig, 4]; Unless otherwise specified) Conditions Min 1.25 1.25 VFS=0. 015775* RF *VDD Audio code 0000H, BTL Audio code 0000H, SE All devices shutdown SE Mode VFS-10% 4.5 3.6 5.5 1.8 Typ. 1.35 1.35 VFS 6 4.5 9.2 -63 0.07 0.45 0.33 85m 25m Max 1.45 1.45 VFS+10% 9 5.4 13.5 V 1.5 -58 0.126 dB % W W W W Unit V V V mA mA uA
AC Characteristics THD+N Total harmonic distortion plus noise SE mode, RL=32, VFS 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%
Po
Output power
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MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
TYPICAL PERFORMANCE CHARACTERISTICS
(Ta=25, sampling rate=4fs, fs= 44.1kHz, RF = 24K; unless otherwise specified)
THD+N (%)
THD+N (%)
SE,8ohm ,VFS f=1kHz
SE, 16ohm ,VFS f=1kHz
THD+N (%)
SE, 32ohm ,VFS f=1kHz
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
THD+N vs. supply voltage
THD+N vs. supply voltage
THD+N vs. supply voltage
THD+N (%)
BTL,4ohm ,VFS f=1kHz RF = 22K
THD+N (%)
BTL, 8ohm ,VFS f=1kHz
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
THD+N vs. supply voltage
THD+N vs. supply voltage
THD+N (%)
THD+N (%)
VDD=5V, VFS BTL, 8ohm
VDD=3.3V, VFS BTL, 8ohm
THD+N (%)
VDD=2.7V, VFS BTL, 8ohm
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
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MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
THD+N (%)
THD+N (%)
VDD=5V, VFS BTL, 4ohm
VDD=3.3V, VFS BTL, 4ohm
THD+N (%)
VDD=2.7V, VFS BTL, 4ohm
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
THD+N (%)
THD+N (%)
VDD=5V, VFS SE, 32ohm
VDD=3.3V, VFS SE, 32ohm
THD+N (%)
VDD=2.7V, VFS SE, 32ohm
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
THD+N (%)
THD+N (%)
VDD=5V, VFS SE, 16ohm
VDD=3.3V, VFS SE, 16ohm
THD+N (%)
VDD=2.7V, VFS SE, 16ohm
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
THD+N vs. frequency
THD+N vs. frequency
THD+N vs. frequency
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MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
CAP=10uF
CAP=10uF CAP=10uF CAP=1uF
PSRR (dB)
PSRR (dB)
PSRR (dB)
CAP=1uF
CAP=1uF
VDD=5V BTL 8ohm VRR=-20dBV DAC Active
VDD=3.3V BTL 8ohm VRR=-20dBV DAC Active
VDD=2.7V BTL 8ohm VRR=-20dBV DAC Active
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR5V vs. frequency
PSRR3.3Vvs. frequency
PSRR2.7Vvs. frequency
CAP=10uF
CAP=10uF
CAP=10uF
PSRR (dB)
PSRR (dB)
CAP=1uF
CAP=1uF
PSRR (dB)
CAP=1uF
VDD=5V SE 32ohm VRR=-20dBV DAC Active
VDD=3.3V SE 32ohm VRR=-20dBV DAC Active
VDD=2.7V SE 32ohm VRR=-20dBV DAC Active
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR5V vs. frequency
PSRR3.3Vvs. frequency
PSRR2.7Vvs. frequency
CAP=10uF CAP=10uF CAP=10uF CAP=1uF
PSRR (dB)
PSRR (dB)
PSRR (dB)
CAP=1uF
CAP=1uF
VDD=5V BTL 8ohm VRR=-20dBV DAC SD
VDD=3.3V BTL 8ohm VRR=-20dBV DAC SD
VDD=2.7V BTL 8ohm VRR=-20dBV DAC SD
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR5V vs. frequency
PSRR3.3Vvs. frequency
PSRR2.7Vvs. frequency
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CAP=10uF CAP=10uF
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
CAP=10uF
PSRR (dB)
PSRR (dB)
CAP=1uF
CAP=1uF
PSRR (dB)
CAP=1uF
VDD=5V SE 32ohm VRR=-20dBV DAC SD
VDD=3.3V SE 32ohm VRR=-20dBV DAC SD
VDD=2.7V SE 32ohm VRR=-20dBV DAC SD
FREQUENCY (Hz)
FREQUENCY (Hz)
FREQUENCY (Hz)
PSRR5V vs. frequency
PSRR3.3Vvs. frequency
PSRR2.7Vvs. frequency
No Loading
SE, 32ohm BTL, 8ohm
SE, 32ohm BTL, 8ohm
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
BTL
BTL
SE
SE
QUIESCENT CURRENT (mA)
BTL SE DAC Shutdown
All Devices activate.
All Devices activate.
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Quiescent current vs. supply voltage
Quiescent current vs. supply voltage
Quiescent current vs. supply voltage
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
QUIESCENT CURRENT (mA)
VDD=5V
VDD=3.3V
VDD=2.7V
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
SUPPLY VOLTAGE (V)
Mode vs. HP-IN votage
Mode vs. HP-IN votage
Mode vs. HP-IN votage
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CHANNEL SEPARATION (dB)
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
VFS ,f=1kHz SE, 32ohm
SUPPLY VOLTAGE (V)
Channel separation vs. supply voltage
TIMING AND DATA FORMAT
The MS6337 accepts input serial data formats of 16-bit word length. Left and right data words are time multiplexed. The MSB must always be first.
LEFT RIGHT tr tHB tf tLB tHW tSW
WS
BCK
tcr tSD tHD LSB MSB
DATA
Fig.1 Timing and input signals.
Data format (BCK, WS and DATA) Parameter Symbol VIL VIH Input LOW level Input HIGH level Input Leakage Current LOW Input Leakage Current HIGH Input Clock Frequency Bit Rate Data Input Word Select Input Rise Time Fall Time Bit Clock Cycle Time Bit Clock High Time Bit Clock Low Time Data Set-up Time Data Hold Time to Bit Clock Word Select Hold Time Word Select Set-up Time
Conditions
Min 1.6 54 15 15 12 2 2 12
Typ. -
Max 0.7 10 10 18.4 18.4 384 12 12 -
Unit V V
l I IL l l I IH l f BCK
BR
A A
MHz Mbits/s kHz ns ns ns ns ns ns ns ns ns
fWS
tr tf t Cr t HB t LB t SD t HD t HW t SW
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Right justified format
WS
LEFT
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
RIGHT
BCK
DATA 2
1
0
15 MSB
14
13
2
1
0 LSB
15 MSB
14
13
2
1
0 LSB
Fig.2 Right justified format I2S format
WS
LEFT
RIGHT
BCK
1 BCK 1 BCK
DATA
15 MSB
14
13
2
1
0 LSB
15 MSB
14
13
2
1
0 LSB
Fig.3 I2S format
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APPLICATION INFORMATION
Basic application example
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Note:
VDAC out=0.015775*RF*VDDVpp RF//CF to decide -3dB point For VDD=3V, RL=32, RF =24k, CF =390pF, VDAC out =1.134Vpp _RL=16, RF =22k, CF =470pF, VDAC out =1.04Vpp Fig.4 Basic application circuit.
SE mode and BTL mode operation As shown in the block diagram (Page.1), for the SE mode, the MS6337 operates as a high drive dual operational amplifiers. Amplifier A1 and B1 are independent amplifiers with an externally configured gain of AV = - RF/RIN. Amplifier A2 is shutdown to a high output impedance state. That is, the mono speaker is muted. For the BTL mode, the audio signal from the RIN pin is connected directly to the inverting input of A1. As a result, the L-IN and R-IN audio signals, either from DAC or Line in, are summed together at the input of A1. A2 is then activated with a closed-loop gain of AV = -1 fixed by two internal resistors. The outputs of A1 and A2 are then used to drive the mono bridged-tied load. Also in the BTL mode, the amplifier B1 functions as an unit gain buffer. The output voltage of B1 will follow Vcap, in which no current goes through the feedback resistor RF of B1. This will insure that as HPIN goes low there is no transient of Rout for the BTL mode.
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EXTERNAL DIMENSIONS
SSOP24
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Symbol A A1 A2 B C D E E1 e L y
Dimension in mm Min Nom Max 1.35 1.6 1.75 0.1 0.25 1.45 0.2 0.25 0.30 0.19 0.25 8.55 8.75 5.8 6.0 6.2 3.8 3.9 4.0 0.640 BASIC 0.40 1.27 o o 0 8 0.10
Dimension in inches Min Nom Max 0.053 0.064 0.069 0.004 0.010 0.057 0.008 0.010 0.012 0.007 0.010 0.337 0.344 0.228 0.236 0.244 0.150 0.153 0.157 0.025 BASIC 0.016 0.05 o o 0 8 0.004
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QFN24 (4x4mm)
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Symbol A A1 A3 b D D1 E E1 e L
Dimension in mm Min Nom Max 0.70 0.75 0.80 0 0.02 0.05 0.203REF 0.18 0.25 0.30 3.90 4.00 4.10 1.90 2.00 2.10 3.90 4.00 4.10 1.90 2.00 2.10 0.50BSC 0.30 0.40 0.50
Dimension in inch Min Nom Max 0.02756 0.02953 0.03150 0 0.00079 0.00197 0.008REF 0.00709 0.00984 0.01181 0.1535 0.1575 0.161.4 0.0748 0.0787 0.0827 0.1535 0.1575 0.1614 0.0748 0.0787 0.0827 0.01969BSC 0.0118 0.0157 0.0197
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Demo board
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
1
2 3
6
5
4
Function description Label 1: Supply Input Supply voltage range is 2.7V to 5.5V. Label 2: Headphone Jack Used 3.5mm diameter of headphone with 32ohm Label 3: Speaker Output Connected to speaker with 8ohm or 4 ohm Label 4: Digital Signal Input Connected to digital audio formats as I2S, Right Justified. Label 5: LED Indicator The LEDs indicate the chip status and IR received status. It is red-dark blink once when the MCU has received the function code correctly. Label 6: Reset All I/O pins are reset to default values.Initial state: RJF, CAP_UP, DAC_SD, /SD_MODE, SD = 0.
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IR Controller
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
Initial state: RJF, CAP_UP, DAC_SD, /SD_MODE, SD = 0.
I2S, RJF: The digital input format keys. There are two formats can be selected that is I2S and Right justified. CAP_UP/CAP DOWN : The CAP control key. ( This pin is functional only as the system is shutdown.) CAP_UP : CAP charge. CAP_DOWN : CAP discharge. DAC_ACT, DAC_SD : The DAC Shutdown keys. DAC_ACT : DAC is active. DAC_SD : DAC is shutdown. SD_MODE, /SD_MODE: The shutdown mode select keys. The shutdown mode selects the shutdown logic level SD=0, SD=1: The shutdown level control keys. SD_MODE , the device is shutdown when SD = 0. /SD_MODE , the device is shutdown when SD =1.
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Circuit
J1 1 2 DVDD + C3 0 .1u DVDD
MS6337
16-Bit Stereo Audio DAC & Mono 1.8W Power Amplifier Plus Stereo Headphone Function
R1 + C4 1u R4 10K C6 20 P 2 + Y1 24M RST 1 2 3 4 5 IR_IN 6 7 8 9 10 S1 R2 10K
220 C1 + 47u Q1 1 2 3 VS GND IR IR + C5 470P R5 HP_IN DGND + C8 1u R6 100K 100K J2 R HP L G HP OUT J4 R8 1K R7 1K R_OUT L_ OUT 1 2 3 OUT
+ C2 10u POWER U1 RST P3.0 P3.1 XTAL2 XTAL1 P3.2 P3.3 P3.4 P3.5 GND Vcc P1.7 P1.6 P1.5 P1.4 P1.3 P1.2 P1.1 P1.0 P3.7 20 D1 19 1 8 SD_ MODE 1 7 SD 1 6 DAC_PD 1 5 CAP_ DC 1 4 FORMAT 13 12 11
R3 1K
IR_IN
W1 JUMP DGND J3 1 2 AVCC AVCC + C11 0.1u + C12 1u
C7
20 P +
1
AT89C4051
C9
+
100u C10 + 100u
SP1
AGND U2 R9 24K C1 5 + 3 90P C13 1u + 1 2 3 4 5 SD_MODE 6 7 SD 8 9 DAC_PD 10 11 12 PVDDL BTL+ LOUT/BTL- PVDDR AVSS ROUT PVSSL PVSSR LIN RIN SD_ MODE CAP SD HP_IN AVSS /CAP_DC DGND AVDD /DAC_PD DVDD DATA FORMAT WS BCK MS6 337 24 23 22 21 20 19 18 17 16 15 14 13
SPK C14 1u C1 6 C17 HP_IN CAP_DC 3 90P 1u 390K C18 DVDD FORMAT C19 1u AGND + 1u + + + R1 0 2 4K
+ DGND
R11
J5 1 2 3 4 DAC_ IN AGND R12 R13 R14 1K 1K 1K
W2 Jump er AGND
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