16-Bit Stereo Audio DAC & Headphone Driver Single Supply Voltage and Low Voltage Low Power Consumption 8.9mW Mute And Power Down Function VOL-IN

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Baldwin Jenkins
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1 Single Supply Voltage and Low Voltage Low Power Consumption 8.9mW Mute And Power Down Function FEATURES Operation range: 2.5V~6.5V Excellent Power Supply Rejection Ratio(PSRR) Reduced pop-noise circuit Low power consumption 8.9mW at V DD =3.3V Mute function Power down function Output voltage adjusted by the external resisters Component less No zero crossing distortion Fast setting time permits 2*, 4*, and 8* oversampling (serial input) or double speed operation at 4* oversampling Compatible with most of the Japanese input formats; time multiplexed, two's complement, TTL input level. The minimum HIGH voltage of TTL inputs(, and ) can be 1.8V for some special application, but the operation voltage should not exceed 4.5V. Housed in 16 pin SSOP, QFN package APPLICATIONS Multimedia system, MP3, PDA, Portable Digital Audio. DESCRIPTION The is an integrated 16-bits voltage-output Digital-to-Analog Converter (DAC) and class AB stereo headphone driver. The is with the excellent Power Supply Rejection Ratio(PSRR). It is fabricated in a CMOS process 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 ideally suited for use in digital audio equipment. BLOCK DIAGRAM PD VOL-IN HPV DD HP VSS - VOL-OUT DAC MUTE - VOR-OUT DV DD DGND AV DD AV SS CAP VOR-IN Mute REV 7 1/13

2 PIN CONFIGURATION SSOP16 Symbol Pin Description HP V DD 1 Headphone supply voltage V OR -OUT 2 Right channel output V OR -IN 3 Right channel input (-) CAP 4 Capacitor connected /PD 5 Power down 6 Bit clock input 7 Word select input 8 Data input DGND 9 Digital ground DV DD 10 Digital supply voltage AV DD 11 Analog supply voltage AV SS 12 Analog ground /MUTE 13 Mute function V OL -IN 14 Left channel input (-) V OL -OUT 15 Left channel output HP V SS 16 Headphone ground NOTE: /PD=0 power down; /PD=1 active /Mute=0 mute on; /Mute=1 mute off HP VDD VOR-OUT VOR-IN CAP PD MS HP VSS VOL-OUT VOL-IN MUTE AVSS AVDD DVDD DGND QFN16 Symbol Pin Description V OR -OUT 1 Right channel output V OR -IN 2 Right channel input (-) CAP 3 Capacitor connected /PD 4 Power down 5 Bit clock input 6 Word select input 7 Data input DGND 8 Digital ground DV DD 9 Digital supply voltage AV DD 10 Analog supply voltage AV SS 11 Analog ground /MUTE 12 Mute function V OL -IN 13 Left channel input (-) V OL -OUT 14 Left channel output HP V SS 15 Headphone ground HP V DD 16 Headphone supply voltage NOTE: /PD=0 power down; /PD=1 active /Mute=0 mute on; /Mute=1 mute off VOR-OUT VOR-IN CAP PD HP VDD 5 16 HP VSS VOL-OUT 6 7 DGND 8 13 VOL-IN MUTE AVSS AVDD DVDD REV 7 2/13

3 ORDERING INFORMATION Package Part number Packaging Marking Transport Media 16-Pin SSOP TR 2.5k Units Tape and Reel 16-Pin SSOP U 100 Units Tube 16-Pin SSOP (lead free) GTR G 2.5k Units Tape and Reel 16-Pin SSOP (lead free) GU G 100 Units Tube 16-Pin QFN (lead free) QTR k Units Tape and Reel 16-Pin QFN (lead free) Q Units Tray RoHS Compliance ABSOLUTE MAXIMUM RATINGS Symbol Parameter Rating Unit VDD Positive Supply Voltage 6.5 V V ESD Electrostatic Handling to 3000 V T STG Storage Temperature Range -65 to 150 T A Operating Ambient Temperature Range -40 to 85 T J Maximum Junction Temperature 150 T S Soldering Temperature, 10 seconds 260 R THJA Thermal Resistance from Junction to Ambient in Free Air SSOP16 QFN /W OPERATING RATINGS Symbol Parameter Min Typ Max Unit V DD Supply Voltage V REV 7 3/13

4 5V ELECTRICAL CHARACTERISTICS (Ta=25, V DD =5V, V SS =0V, f=1khz, R L =32 ; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics V CAP Voltage at CAP V V DC Output DC level V V FS Full scale output voltage V FS = * R F *V DD V FS -10% V FS V FS 10% V I Q Quiescent current Mute on, code 0000H ma Mute off, code 0000H ma I PD Power down current No digital input signal ua V TM PSRR Mute control voltage Power supply rejection ratio Mute on V Mute off V DD V CAP=2.2uF (100Hz) db CAP=10uF (100Hz) db CS Channel separation db ATT Mute attenuation db AC Characteristics Res Resolution bits THDN Total harmonic distortion plus db R noise F =22k % S/N Signal-to-noise ratio db Po Maximum output power (THDN)/S < 0.1, 2 ch mw Vo Maximum output voltage swing (THDN)/S < Vpp REV 7 4/13

5 3.3V ELECTRICAL CHARACTERISTICS (Ta=25, V DD =3.3V, V SS =0V, f=1khz, R L =32 ; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics V CAP Voltage at CAP V V DC Output DC level V V FS Full scale output voltage V FS = * R F *V DD V FS -10% V FS V FS 10% V I Q Quiescent current Mute on, code 0000H ma Mute off, code 0000H ma I PD Power down current No digital input signal ua V TM PSRR Mute control voltage Power supply rejection ratio Mute on 0-1 V Mute off V DD V CAP=2.2uF (100Hz) db CAP=10uF (100Hz) db CS Channel separation db ATT Mute attenuation db AC Characteristics Res Resolution bits THDN Total harmonic distortion plus db R noise F =22k % S/N Signal-to-noise ratio db Po Maximum output power (THDN)/S < 0.1, 2 ch mw Vo Maximum output voltage swing (THDN)/S < Vpp REV 7 5/13

6 2.7V ELECTRICAL CHARACTERISTICS (Ta=25, V DD =2.7V, V SS =0V, f=1khz, R L =32 ; unless otherwise specified) Symbol Parameter Conditions Min Typ Max Unit DC Characteristics V CAP Voltage at CAP V V DC Output DC level V V FS Full scale output voltage V FS = * R F *V DD V FS -10% V FS V FS 10% V I Q Quiescent current Mute on, code 0000H ma Mute off, code 0000H ma I PD Power down current No digital input signal ua V TM PSRR Mute control voltage Power supply rejection ratio Mute on V Mute off V DD V CAP=2.2uF (100Hz) db CAP=10uF (100Hz) db CS Channel separation db ATT Mute attenuation db AC Characteristics Res Resolution bits THDN Total harmonic distortion plus noise R F =22k DB % S/N Signal-to-noise ratio db Po Maximum output power (THDN)/S < 0.1%, 2 ch mw Vo Maximum output voltage swing (THDN)/S < 0.1% Vpp REV 7 6/13

TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25, R L =32, R F =24k, sampling rate=4fs; unless otherwise specified) POWER DOWN CURRENT (ua) QUIESCENT

supply voltage Quiescent current vs. supply voltage THDN vs. supply voltage CAP=22uF CAP=22uF CAP=22uF CAP=10uF CAP=10uF CAP=10uF PSRR (db) CAP=2.

7V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs.

7 TYPICAL PERFORMANCE CHARACTERISTICS (Ta=25, R L =32, R F =24k, sampling rate=4fs; unless otherwise specified) POWER DOWN CURRENT (ua) QUIESCENT CURRENT (ma) Mute Off Mute On THDN (%) f=1khz SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) SUPPLY VOLTAGE (V) Power down current vs. supply voltage Quiescent current vs. supply voltage THDN vs. supply voltage CAP=22uF CAP=22uF CAP=22uF CAP=10uF CAP=10uF CAP=10uF PSRR (db) CAP=2.2uF CAP=2.2uF CAP=2.2uF PSRR (db) PSRR (db) VDD=5V VRR=-20dBV VDD=3.3V VRR=-20dBV VDD=2.7V VRR=-20dBV FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency MUTE ATTENUATION (db) CHANNEL SEPARATION (db) THDN (%) VDD=2.7V VDD=3.3V f=1khz f=1khz SUPPLY VOLTAGE (V) Mute attenuation vs. supply voltage SUPPLY VOLTAGE (V) Channel separation vs. supply voltage FREQUENCY (Hz) THDN vs. frequency REV 7 7/13

8 TIMING AND FORMAT The accepts input serial data formats of 16-bit word length. Left and right data words are time multiplexed. The MSB must always be first. The format of data input is shown in Figs. 1 and 2. RIGHT LEFT t r t HB t f t LB t HW t SW t cr t SD t HD LSB MSB Fig.1 Timing and input signals. LEFT RIGHT MSB LSB MSB LSB Fig.2 Format of input signals. Data format (,, ) Symbol Parameter Conditions Min Typ Max Unit V IL Input LOW level V V V IH Input HIGH level *Note V l I IL l Input Leakage Current LOW A l I IH l Input Leakage Current HIGH A f Input Clock Frequency MHz BR Bit Rate Data Input Mbits/s f Word Select Input khz t r Rise Time ns t f Fall Time ns t Cr Bit Clock Cycle Time ns t HB Bit Clock High Time ns t LB Bit Clock Low Time ns t SD Data Set-up Time ns t HD Data Hold Time to Bit Clock ns t HW Word Select Hold Time ns t SW Word Select Set-up Time ns *Note: For the minimum input HIGH level as 1.8V, the operation voltage should not exceed 4.5V. REV 7 8/13

9 POWER DOWN AND MUTE FUNCTION A microcontroller or microprocessor control power and mute function timing on is shown in Figure 3. It could prevent pop noise effectively when power on and power off. The signals of power down function and mute function are ignored during initial time 350ms when power on. It is better to control mute function after 1sec. The sequence is mute on and then power down when power off. POWER PD Power on: Delay >350msec from power on to mute off. VTM Power off: Delay >0sec from mute on to power off. Voutput 350ms 1sec >0sec Fig.3 Power and mute function timing. APPLICATION INFORMATION Basic application example A typical example of an MP3-application with the is shown in Fig.4. Power voltage of digital and analog can be used single supply voltage. 0.1uF DVDD DGND HP VDD HP VSS 0.1uF 100uF Supply 2.7~5.5V AVSS 0.1uF AVDD CAP 300K 2.2uF MCU 100K 1uF PD MUTE VOR-IN VOR-OUT CF RF 47uF Headphone 32Ω CF Decoder VOL-IN VOL-OUT RF 47uF Headphone 32Ω Note : Vo= *R F *V DD Vpp R F //C F to decide 3dB point V TM : Mute control voltage For V DD =3V, R L =32, R F =24k, C F =390pF, Vo=1.7Vpp _R L =16, R F =22k, C F =470pF, Vo=1.56Vpp Fig.4 MP3 Basic application circuit. REV 7 9/13

10 A MP3 with FM application MS6257 MCU MP3 Decoder Audio DAC - HP Driver - Mute Volume Controller -79~15dB FM Module Fig.5 MP3 with FM block diagram combined with FM function by using MS6257 as volume controller (-79dB to 15dB) 0.1uF DVDD DGND HP VDD HP VSS AVSS 0.1uF 0.1uF 100uF Supply FM-L FM module FM-R AVDD MCU 100K 1uF PD MUTE CAP VOR-IN VOR-OUT 300K 2.2uF CF RF 47uF RFM MS6257 L-IN L-OUT VSS SDA R-IN R-OUT VDD SCL MP3 Decoder VOL-OUT VOL-IN RF CF 47uF 32Ω Headphone FM mode: DC Gain = -R F / R FM RFM Fig.6 FM application circuit using and MS6257. Operation: It may have two sources to play, one is DAC, the other is LINE-IN. To play DAC, the LINE-IN signal (such as from FM module and MS6257, MS6257 is a stereo audio volume controller) must be muted. To play LINE-IN, the last input for DAC should 0000HEX code in order to keep a DC with half V DD at the headphone outputs. For both plays, /MUTE should keep HIGH. REV 7 10/13

11 EXTERNAL DIMENSIONS SSOP16 D ZD E1 A2 E A H x 45 c Detail A Symbol Dimension in mm Dimension in inch Min Max Min Max A A A b c e BASIC BASIC D E E L h L BASIC BASIC ZD REF REF R R θ 0 o 8 o 0 o 8 o θ1 0 o 0 o θ2 5 o 15 o 5 o 15 o θ2 e b A1 θ1 L1 R R1 Detail A L θ QFN16 (3x3mm) D L D1 E1 E Symbol Dimension in mm Min Nom Max A A A3-0.20REF - b D BSC 3.15 D1-1.48BSC - E BSC 3.15 E1-1.48BSC - e BSC - L e b A A3 A1 REV 7 11/13

12 TAPE AND REEL (Unit : mm) SSOP /-0.0 DIA R MAX MIN 0.5 Radius Typical QFN16 (3x3mm) / / REV 7 12/13

Demo Board - - 1 2 4 3 Function description Label 1: Supply Voltage Supply voltage range is 2.5V to 6.5V, both the analog and the digital are the same voltage.

13 Demo Board Function description Label 1: Supply Voltage Supply voltage range is 2.5V to 6.5V, both the analog and the digital are the same voltage. Label 2: Power Down The Power Down is enabled when the PD switch is pressed. The Power Down is disabled when the PD switch is not pressed. Label 3: Mute Function The chip is mute on when the MUTE switch is pressed. The chip is mute off when the MUTE switch is not pressed. Label 4: Source The source is digital audio input, the audio format is right justified. (,, ) Circuit APOWER DPOWER C12 HP jack 32 C11 47uF C9 30 C7 361 R3 24k /PD C5 2.2uF R2 300k L1 U3 C3 100uF HPVDDHPVSS VoR-OUT VoL-OUT VoR-INVoL-IN 14 CAP MUTE 13 /PD AVSS 12 AVDD 11 DVDD 10 DGND 9 C1 0.1u C2 0.1u C4 100uF 47uF C10 30 C8 361 R4 24k R1 100k MUTE HP jack 32 REV 7 13/13

XRD8775 CMOS 8-Bit High Speed Analog-to-Digital Converter

XRD8775 CMOS 8-Bit High Speed Analog-to-Digital Converter CMOS 8-Bit High Speed Analog-to-Digital Converter April 2002-4 FEATURES 8-Bit Resolution Up to 20MHz Sampling Rate Internal S/H Function Single Supply: 5V V IN DC Range: 0V to V DD V REF DC Range: 1V to