MS6894MGTR资料

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection Mono 1.1W, Fully Differential Input Excellent PSRR, Low Voltage Operation Selectable Shutdown Logic Level FEATURES •PSRR at 217Hz, 80dB at 5V •Operation range: 2.5V~5.5V •Shutdown Current 0.1uA at 5V •Output power, THD+N=1% RL=8Ω, 1.1W at 5V, 0.4W at 3.3V, 200mW at 2.5V •Unity-gain stable •Space-saving MSOP10, enhance thermal pad APPLICATIONS •Portable electronic devices •PDAs •Communication headsets •Cross-reference: LM4894 DESCRIPTION The MS6894 is a fully differential power amplifier that can drive 1.1W of continuous average power into a mono 8Ω bridged-tied load (BTL). Operation with 2.5V supply, it can drive 200mw into a mono 8Ω. The shutdown may be enabled by either logic high or logic low that depending on shutdown mode selection. The BTL configuration eliminates the need for external coupling capacitors on the output in most applications. The MS6894 is unity-gain stable and can be configured by external gain-setting resistors. The MS6894 has good feature for portable equipment, these features include the fully differential input, low voltage operation, micropower consumption shutdown mode, enhance thermal pad and small package MSOP10, make the MS6894 ideally suited for use in portable electronic equipments. BLOCK DIAGRAM VDD7-IN2-+10Vo2SDSD ModeBPShutdown controlSD Mode0011SD0101StatusShutdownOnOnShutdown135BiasCommonmode-+IN46Vo1+7 GND REV 1.0 1 www.mosanalog.com 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection PIN CONFIGURATION Symbol Pin Description Shutdown places the entire device in shutdown mode depending on SD Mode selection. TTL compatible input. SD Mode = 0, the device entries shutdown when SD is logic low. SD Mode = 1, the device entries shutdown when SD is logic high. Negative differential input The shutdown mode controls the shutdown logic level of the SD pin1. TTL compatible input Positive differential input Bypass is the cap to the voltage divider for internal mid-supply bias. This terminal should be connected to a 0.1-µF to 10-µF capacitor CBP. Negative BTL output Ground No connected Supply voltage Positive BTL output MSOP10 SD-INSD Mode+INBP 1 2 3 4 5ThermalPad 10 9 8 7 6Vo2VDDNCGNDVo1SD 1 -IN SD Mode +IN BP Vo1 GND NC VDD Vo2 2 3 4 5 6 7 8 9 10 ORDERING INFORMATION Package 10-Pin MSOP (lead free) 10-Pin MSOP (lead free) RoHS Compliance Symbol VDD VESD TSTG TA TJ TS RTHJA REV 1.0 2 www.mosanalog.com Part number MS6894MGTR MS6894MGU Packaging Marking 6894G 6894G Transport Media 3.5k Units Tape and Reel 80 Units Tube ABSOLUTE MAXIMUM RATINGS Parameter 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 MSOP10 (enhance thermal pad) Rating 6 3500 -65 to 150 -40 to 85 150 260 50 Unit V V ℃ ℃ ℃ ℃ ℃/W 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection OPERATING RATINGS Symbol VDD Supply voltage Parameter Min 2.5 Typ 5 Max 5.5 Unit V 5V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=5V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISHDN VSDH VSDL VSDMH VSDML PSRR THD+N S/N Po Quiescent current Shutdown current Shutdown input voltage high Shutdown input voltage low SD Mode input voltage high SD Mode input voltage low Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio Output power VIN=0V, IO=0A VSHDN=0V RL=8Ω, CBP=1uF, f=217Hz RL=8Ω, 1.1W RL=8Ω, 1.1W RL=8Ω, THD+N = 1% Min - - 2.0 - 2.0 - - - - 90 1.1 Typ 2.7 0.1 - - - - 80 -60 0.1 103 1.3 Max - - - 0.8 - 0.8 - -55 0.178 - - Unit mA uA V V V V dB dB % dB W 3.3V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=3.3V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISD PSRR THD+N S/N Po Quiescent current Shutdown current Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio Output power VIN=0V, IO=0A VSHDN=0V RL=8Ω, CBP=1uF, f=217Hz RL=8, 0.4W RL=8Ω, 0.4W RL=8Ω, THD+N = 1% Min - - - - 90 0.4 Typ 2.4 0.1 70 -60 0.1 100 0.5 Max - - - -55 0.178 - - Unit mA uA dB dB % dB W 2.5V ELECTRICAL CHARACTERISTICS Ta = 25°C, VDD=2.5V, f=1kHz, BW<30kHz, unless otherwise specified. Symbol Parameter Conditions IQ ISD PSRR THD+N S/N Po REV 1.0 3 www.mosanalog.com Min - - - - - 90 0.2 Typ 2.2 0.1 60 -60 0.1 98 0.28 Max - - - -55 0.178 - - Unit mA uA dB dB % dB W Quiescent current Shutdown current Power supply rejection ratio Total harmonic distortion plus noise Signal-to-noise ratio Output power VIN=0V, IO=0A VSHDN=0V RL=8Ω, CBP =1uF, f=217Hz RL=8Ω, 0.2W RL=8Ω, 0.2W RL=8Ω, THD+N = 1% 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection TYPICAL PERFORMANCE CHARACTERISTICS Ta = 25°C, BW<30kHz, unless otherwise specified. VDD=5V RL=8Ω Po=1.1W VDD=3.3V RL=8Ω Po=0.4W VDD=2.5V RL=8Ω Po=0.2W THD+N (%) THD+N (%) FREQUENCY (Hz) FREQUENCY (Hz) THD+N (%) FREQUENCY (Hz) f=20kHz f=20kHz f=20kHz THD+N (%) THD+N (%) f=20Hz f=20Hz THD+N (%) f=1kHz f=1kHz THD+N vs. frequency THD+N vs. frequency THD+N vs. frequency f=1kHz f=20Hz VDD=5V RL=8Ω VDD=3.3V RL=8Ω VDD=2.5V RL=8Ω OUTPUT POWER (W) OUTPUT POWER (W) OUTPUT POWER (W) CBP=1uF CBP=1uF THD+N vs. output power THD+N vs. output power THD+N vs. output power CBP=1uF PSRR (dB) PSRR (dB) VDD=5V RL=8Ω VDD=3.3V RL=8Ω PSRR (dB) VDD=2.5V RL=8Ω FREQUENCY (Hz) FREQUENCY (Hz) FREQUENCY (Hz) REV 1.0 4 www.mosanalog.com PSRR vs. frequency PSRR vs. frequency PSRR vs. frequency 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection VIN=0V No load QUIESCENT CURRENT (mA) SUPPLY VOLTAGE (V) REV 1.0 5 www.mosanalog.com Quiescent current vs. supply voltage 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection APPLICATION INFORMATION Basic application example 20kRF1VDD91uFVDD0.39uF- Differential Input20kRI12-IN-+Vo210+MCUVDD100k135SDSD ModeBP+INBiasCommonmodeRL8Ω0.39uF+ Differential Input20kRI21uF4-+Vo16-GND720kRF2 Fig.1 A audio amplifier application circuit. Shutdown Control The shutdown may be enabled by either logic high or logic low that depending on shutdown mode selection. Both the SD pin and the SD Mode pin are TTL compatible input. The SD Mode is logic low, the device entries shutdown when SD is logic low. The SD Mode is logic high, the device entries shutdown when SD is logic high. Shutdown controlSD Mode0011SD0101StatusShutdownOnOnShutdown External gain-setting As shown in Fig.1, RI1 =RI2 and RF1 =RF2, the respective closed-loop gain is set at -RF/RI. It is important to match input resistors and feedback resistors to each other. The outputs are used to drive the mono bridged-tied load (BTL). High Pass Filter The input capacitor CIN and resister RIN are decided the cut-off frequency of the HPF. The equation is as follows: fcut-off = 1 / (2π*RIN *CIN) Thermal pad considerations The thermal pad must be connected to ground. The package with thermal pad of the MS6894 requires special attention on thermal design. The thermal pad on the bottom of the MS6894 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. REV 1.0 6 www.mosanalog.com 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection EXTERNAL DIMENSIONS MSOP10 (Thermal Pad) Thermal PadSymbol A A1 A2 b c D H E Dimension in mm Min 0.81 0.05 0.76 0.15 0.13 2.90 4.70 2.90 Dimension in inches Min Nom Max 0.032 0.036 0.044 0.002 - 0.006 0.030 0.034 0.038 0.006 0.008 0.012 0.005 0.006 0.009 0.114 0.118 0.122 0.185 0.193 0.201 0.114 0.118 0.122 0.02 BASIC 0.016 0.021 0.026 0o - 6o 0.050 - 0.060 0.040 - 0.050 Nom Max W1HEW2e L θ W1 W2 D0.92 1.12 - 0.15 0.86 0.97 0.20 0.30 0.15 0.23 3.00 3.10 4.90 5.10 3.00 3.10 0.50 BASIC 0.40 0.53 0.66 0o - 6o 1.27 - 1.52 1.02 - 1.27 AA2θeBLC MSOP10 A1 TAPE AND REEL (Unit : mm) 2.00.300.054.00.051.5+0.1/-0.0 DIA1.750.3R MAX5.50.0512.05.40.33.03.66.98.01.5 MIN0.5 Radius Typical2.01.7 REV 1.0 7 www.mosanalog.com 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection DEMO BOARD 2135 4 Function description Label 1: Supply Voltage Supply voltage range is 2.5V to 5.5V, the left of jump is positive and the right of jump is negative. Label 2: Shutdown mode selection (SD Mode) The shutdown mode is low logic level shutdown mode when the jump is placed left position (SD), the SD Mode is connected to GND. On the other hand , the chip is high logic level shutdown mode when the jump is placed right position (SD), the SD Mode is connected to VDD. Label 3: Shutdown pin (SD pin) The shutdown may be enabled by either logic high or logic low that depending on shutdown mode selection. The SD Mode is placed left position (SD), the chip entries shutdown when SD pin is placed left position (L), the SD Mode is connected to GND. On the other hand, the SD Mode is placed right position (SD), the chip entries shutdown when SD pin is placed right position (H), the SD Mode is connected to VDD. Label 4: Signal Input Connected to audio signals. Label 5: Speaker Output Connected to speaker with 8ohm or 4 ohm. REV 1.0 8 www.mosanalog.com 元器件交易网www.cecb2b.com

MOSA MS6894 Mono 1.1W Fully Differential Power Amplifier with Shutdown Selection Circuit J112AVDD0.1u20K123J2SD12J4-IN123J3SD Mode+C31uU1+C40.39uR120K1234BP5SDVo2IN-VDDSDMNCIN+GNDBPVo1MS689420KR4109876R2LS1AVDDC1+C21uSPEAKER12J5+IN+C50.39uR320K REV 1.0 9 www.mosanalog.com