DatasheetsPDF.com

NCP4894 Dataheets PDF



Part Number NCP4894
Manufacturers ON Semiconductor
Logo ON Semiconductor
Description Differential Audio Power Amplifier
Datasheet NCP4894 DatasheetNCP4894 Datasheet (PDF)

NCP4894 1.8 Watt Differential Audio Power Amplifier with Selectable Shutdown The NCP4894 is a differential audio power amplifier designed for portable communication device applications. This feature and the excellent audio characteristics of the NCP4894 are a guarantee of a high quality sound, for example, in mobile phones applications. With a 10% THD+N value the NCP4894 is capable of delivering 1.8 W of continuous average power to an 8.0 W load from a 5.5 V power supply. With the same load con.

  NCP4894   NCP4894



Document
NCP4894 1.8 Watt Differential Audio Power Amplifier with Selectable Shutdown The NCP4894 is a differential audio power amplifier designed for portable communication device applications. This feature and the excellent audio characteristics of the NCP4894 are a guarantee of a high quality sound, for example, in mobile phones applications. With a 10% THD+N value the NCP4894 is capable of delivering 1.8 W of continuous average power to an 8.0 W load from a 5.5 V power supply. With the same load conditions and a 5.0 V battery voltage, it ensures 1.0 W to be delivered with less than 0.01% distortion. The NCP4894 provides high quality audio while requiring few external components and minimal power consumption. It features a low−power consumption shutdown mode. To be flexible, shutdown may be enabled by either a logic high or low depending on the voltage applied on the SD MODE pin. The NCP4894 contains circuitry to prevent from “pop and click” noise that would otherwise occur during turn−on and turn−off transitions. For maximum flexibility, the NCP4894 provides an externally controlled gain (with resistors), as well as an externally controlled turn−on time (with bypass capacitor). Due to its excellent PSRR, it can be directly connected to the battery, saving the use of an LDO. This device is available in 9−Pin Flip−Chip, Micro−10 and DFN10 3x3 mm packages. Features • Differential Amplification • Shutdown High or Low Selectivity • 1.0 W to an 8.0 W Load from a 5.0 V Power Supply • Superior PSRR: Direct Connection to the Battery • “Pop and Click” Noise Protection Circuit • Ultra Low Current Shutdown Mode • 2.2 V−5.5 V Operation • External Gain Configuration Capability • External Turn−on Configuration Capability • Thermal Overload Protection Circuitry • Pb−Free Packages are Available Typical Applications • Portable Electronic Devices • PDAs • Mobile Phones http://onsemi.com MARKING DIAGRAMS 1 9−PIN FLIP−CHIP FC SUFFIX CASE 499AL A3 xxxG AYWW C1 A1 8 1 Micro−10 DM SUFFIX CASE 846B xxxx AYWG G DFN10 1 MN SUFFIX xxx CASE 485C ALYWG 1G xxxx = Specific Device Code A = Assembly Location L = Wafer Lot Y = Year W, WW = Work Week G = Pb−Free Package (Note: Microdot may be in either location) ORDERING INFORMATION See detailed ordering and shipping information in the package dimensions section on page 15 of this data sheet. © Semiconductor Components Industries, LLC, 2007 January, 2007 − Rev. 9 1 Publication Order Number: NCP4894/D NCP4894 Rf1 20 kW VP Cs 1 mF Negative Diff Input from DAC Ci1 Ri1 390 nF 20 kW Cb INM VP BYPASS VP BYPASS 1 mF VMC BRIDGE SHUTDOWN CONTROL SD MODE 0 0 1 1 SD SELECT 0 1 0 1 Status Shutdown On On Shutdown Positive Diff Input from DAC Ci2 Ri2 390 nF 20 kW SD SELECT SD MODE BYPASS INP VM − OUTA + SHUTDOWN CONTROL + OUTB − 20 kW Rf2 Figure 1. Typical NCP4894 Application Circuit with Differential Input RL 8W http://onsemi.com 2 NCP4894 Rf2 20 kW VP Cs 1 mF Left Channel Input Ci1 Ri1 390nF 20 kW VP INM BYPASS VP − + BYPASS Cb 1 mF VMC BRIDGE OUTA SHUTDOWN CONTROL SD MODE SD SELECT Status 0 0 Shutdown 0 1 On 1 0 On 1 1 Shutdown Right Channel Input Ci2 Ri2 390nF 20 kW SD SELECT SD MODE INP BYPASS VM SHUTDOWN CONTROL + − OUTB Co1 47uF Co2 47uF 32W / 16W Earpiece 32W / 16W Rf1 20 kW Figure 2. Typical NCP4894 Application Circuit for Driving Earpiece http://onsemi.com 3 NCP4894 PIN CONNECTIONS 9−Pin Flip−Chip Micro−10 DFN10 A1 A2 A3 INP BYPASS OUTB B1 B2 B3 VP SD MODE VM C1 C2 C3 INM SD SELECT OUTA (Top View) SD SELECT 1 INM 2 SD MODE INP BYPASS 3 4 5 (Top View) 10 OUTA 9 VP 8 NC 7 VM 6 OUTB SD SELECT 1 INM 2 SD MODE 3 INP 4 BYPASS 5 10 OUTA 9 VP 8 NC 7 VM 6 OUTB (Top View) PIN DESCRIPTION 9−Pin Flip−Chip Micro−10/DFN10 Type Symbol Description A1 4 I INP Positive Differential Input A2 5 O BYPASS Bypass Capacitor Pin which Provides the Common Mode Voltage A3 6 I OUTB Negative BTL Output B1 9 I VP Positive Analog Supply of the Cell B2 3 I SD MODE Shutdown High or Low Selectivity (Note 1) B3 7 I VM Ground C1 2 I INM Negative Differential Input C2 1 O SD SELECT (Note 1) C3 10 I OUTA Positive BTL Output 1. The SD SELECT pin must be toggled to the same state as the SD MODE pin to force the device in shutdown mode. http://onsemi.com 4 NCP4894 MAXIMUM RATINGS (Note 2) Rating Symbol Value Unit Supply Voltage VP 6.0 V Operating Supply Voltage Op VP 2.2 to 5.5 V − Input Voltage Max Output Current Vin −0.3 to Vcc +0.3 V Iout 500 mA Power Dissipation (Note 3) Pd Internally Limited − Operating Ambient Temperature Max Junction Temperature Storage Temperature Range Thermal Resistance Junction−to−Air Micro−10 DFN 3x3 mm 9−Pin Flip−Chip TA TJ Tstg RqJA −40 to +85 150 −65 to +150 200 70 (Note 4) °C °C °C °C/W ESD Protection Human Body Model (HBM) (Note 5) Machine Model (MM) (Note 6) − > 2000 > 200.


NCP4330 NCP4894 NCP4896


@ 2014 :: Datasheetspdf.com :: Semiconductors datasheet search & download site.
(Privacy Policy & Contact)