PDF NCP2809 Data sheet ( Hoja de datos )

Número de pieza	NCP2809
Descripción	NOCAP 135 mW Stereo Headphone Power Amplifier
Fabricantes	ON
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No Preview Available ! NCP2809 Series NOCAPt 135 mW Stereo Headphone Power Amplifier The NCP2809 is a cost−effective stereo audio power amplifier capable of delivering 135 mW of continuous average power per channel into 16 W loads. The NCP2809 audio power amplifier is specifically designed to provide high quality output power from low supply voltage, requiring very few external components. Since NCP2809 does not require bootstrap capacitors or snubber networks, it is optimally suited for low−power portable systems. NCP2809A has an internal gain of 0 dB while specific external gain can externally be set with NCP2809B. If the application allows it, the virtual ground provided by the device can be connected to the middle point of the headset (Figure 1). In such case, the two external heavy coupling capacitors typically used can be removed. Otherwise, you can also use both outputs in single ended mode with external coupling capacitors (Figure 43). Due to its excellent Power Supply Rejection Ratio (PSRR), it can be directly connected to the battery, saving the use of an LDO. Features • Pb−Free Package is Available • 135 mW to a 16 W Load from a 5.0 V Power Supply • Excellent PSRR (85 dB Typical): Direct Connection to the Battery • “Pop and Click” Noise Protection Circuit • Ultra Low Current Shutdown Mode • 2.2 V–5.5 V Operation • Outstanding Total Harmonics Distortion + Noise (THD+N): Less than 0.01% • External Turn−on and Turn−off Configuration Capability • Thermal Overload Protection Circuitry Typical Applications • Cellular Phone • Portable Stereo • MP3 Player • Personal and Notebook Computers http://onsemi.com MARKING DIAGRAM 10 1 Micro10 DM SUFFIX CASE 846B MAx AYW X = E for NCP2809A X = C for NCP2809B A = Assembly Location Y = Year W = Work Week PIN CONNECTIONS IN_R SD BYP REF_I IN_L 1 2 3 4 5 10 OUT_R 9 VM 8 OUT_I 7 VP 6 OUT_L ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 20 of this data sheet. © Semiconductor Components Industries, LLC, 2004 November, 2004 − Rev. 7 1 Publication Order Number: NCP2809/D 1 page NCP2809 Series ELECTRICAL CHARACTERISTICS All the parameters are given in the capless configuration (typical application). The following parameters are given for the NCP2809A and NCP2809B mounted externally with 0 dB gain, unless otherwise noted. (For typical values TA = 25°C, for min and max values TA = −40°C to 85°C, TJmax = 125°C, unless otherwise noted.) Characteristic Symbol Conditions Min Max (Note 4) Typ (Note 4) Supply Quiescent Current Output Offset Voltage IDD Voff Vin = 0 V, RL = 16 W Vp = 2.4 V Vp = 5.0 V Vp = 2.4 V Vp = 5.0 V 1.54 2.8 1.84 3.6 −25 1.0 +25 Shutdown Current Shutdown Voltage High (Note 5) Shutdown Voltage Low Turning On Time (Note 6) Turning Off Time (Note 6) Max Output Swing ISD VSDIH VSDIL TWU TSD Vloadpeak Vp = 5.0 V − − Cby = 1.0 mF Cby = 1.0 mF and Vp = 5.0 V Vp = 2.4 V, RL = 16 W Vp = 5.0 V, RL = 16 W 10 600 1.2 0.4 285 385 0.82 0.9 1.94 2.05 Unit mA mV nA V V ms ms V Max Rms Output Power POrms Vp = 2.4 V, RL = 32 W Vp = 5.0 V, RL = 32 W Vp = 2.4 V, RL = 16 W, THD+N<0.1% Vp = 5.0 V, RL = 16 W, THD+N<0.1% 1.04 2.26 24 mW 131 Voltage Gain Crosstalk Vp = 2.4 V, RL = 32 W, THD+N<0.1% Vp = 5.0 V, RL = 32 W, THD+N<0.1% 17 80 G NCP2809A only −0.5 0 +0.5 dB CS f = 1.0 kHz Vp = 2.4 V, RL = 16 W, Pout = 20 mW Vp = 2.4 V, RL = 32 W, Pout = 10 mW −63.5 −72.5 dB Vp = 3.0 V, RL = 16 W, Pout = 30 mW Vp = 3.0 V, RL = 32 W, Pout = 20 mW −64 −73 Signal to Noise Ratio SNR Vp = 5.0 V, RL = 16 W, Pout = 75 mW Vp = 5.0 V, RL = 32 W, Pout = 50 mW f = 1.0 kHz Vp = 2.4 V, RL = 16 W, Pout = 20 mW Vp = 2.4 V, RL = 32 W, Pout = 10 mW −64 −73 dB 88.3 89 Vp = 3.0 V, RL = 16 W, Pout = 30 mW Vp = 3.0 V, RL = 32 W, Pout = 20 mW 90.5 92 Vp = 5.0 V, RL = 16 W, Pout = 75 mW Vp = 5.0 V, RL = 32 W, Pout = 50 mW 4. Min/Max limits are guaranteed by production test. 5. At TA = −40°C, the minimum value is set to 1.5 V. 6. See page 10 for a theoretical approach to these parameters. 95.1 96.1 http://onsemi.com 5 5 Page NCP2809 Series TYPICAL CHARACTERISTICS −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 −110 10 NCP2809A 100 1000 10000 FREQUENCY (Hz) −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 −110 100000 10 NCP2809A 100 1000 10000 FREQUENCY (Hz) 100000 Figure 30. PSRR − Input Grounded with 10 W Vp = 3.3 V, Vripple = 200 mV pk−pk, RL =16 W Figure 31. PSRR − Input Grounded with 10 W Vp = 3.3 V, Vripple = 200 mV pk−pk, RL = 32 W −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 −110 10 NCP2809A 100 1000 10000 FREQUENCY (Hz) −10 −20 −30 −40 −50 −60 −70 −80 −90 −100 −110 100000 10 NCP2809A 100 1000 10000 FREQUENCY (Hz) 100000 Figure 32. PSRR − Input Grounded with 10 W Vp = 5.0 V, Vripple = 200 mV pk−pk, RL =16 W Figure 33. PSRR − Input Grounded with 10 W Vp = 5.0 V, Vripple = 200 mV pk−pk, RL = 32 W http://onsemi.com 11 11 Page

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