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AUD4990 Dataheets PDF



Part Number AUD4990
Manufacturers Analog Express
Logo Analog Express
Description 2W Audio Power Amplifier
Datasheet AUD4990 DatasheetAUD4990 Datasheet (PDF)

AUD4990 2W Audio Power Amplifier with Selectable Shutdown October 2008 AUD4990 2W Audio Power Amplifier with Selectable Shutdown General Description The AUD4990 is an audio power amplifier for mobile phone and other portable electronic device applications. It can deliver 1.3 watts of continuous average power to an 8 ohm BTL (bridge tied load) and 2 watts of continuous average power to a 4 ohm BTL, with less than 1% distortion from a 5V DC power supply. The AUD4990 is specifically designed to p.

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AUD4990 2W Audio Power Amplifier with Selectable Shutdown October 2008 AUD4990 2W Audio Power Amplifier with Selectable Shutdown General Description The AUD4990 is an audio power amplifier for mobile phone and other portable electronic device applications. It can deliver 1.3 watts of continuous average power to an 8 ohm BTL (bridge tied load) and 2 watts of continuous average power to a 4 ohm BTL, with less than 1% distortion from a 5V DC power supply. The AUD4990 is specifically designed to provide high output power with a minimal amount of external components. It requires no output coupling capacitors, for instance. Because of its space-saving footprint, it perfectly meets the needs of mobile phones, PDAs, notebook computers and other low-voltage applications that require small power sources in a small package. The AUD4990 can offer a low standby current and a zero shutdown current. Furthermore, the amplifier’s startup time is fast enough to use its shutdown mode as a mute function. The AUD4990 features circuitry that eliminates pop-and-click noise whenever the device is turned on or off. Key Specifications Wide Power Supply Voltage Range Typical THD at 1W, 8Ω High PSRR Low Quiescent Current 2.7V < VDD < 5.5 0.2% (typ) 68 dB (typ) 2.5 mA (typ) Features Space Saving Thermal Package Active High or Low Shutdown Mode External Gain Configuration Stable Unity Gain Can Drive CL up to 200pF Applications Mobile Phones PDAs Notebook Computers Portable Electronic Devices Typical Application www.DataSheet4U.com 100 VDD RF 20k Ω Audio Input Ci 0.39 µ F Ri 20kΩ + CS 1.0 µF 10 - IN + IN _ + 20kΩ 20kΩ _ BIAS VO1 - RL 8Ω VO2 + THD + N (%) 1 Bypass + CB 1.0µF V DD/2 + Shutdown Shutdown Mode GND GND V DD V DD 0 1 0 1 Control Status Shutdown On On Shutdown ShutDown SD Mode 0.1 ShutDown GND 0.01 -4 10 10 -3 10 -2 10-1 100 Output Power (W) Figure 1 Audio Power Amplifier with AV = 2 Figure 2 THD + N vs Output Power http://www.analogexpress.com 1 V1.49 www.DataSheet4U.com AUD4990 2W Audio Power Amplifier with Selectable Shutdown Pin Assignment AUD4990D10-3 (Bottom View) AUD4990D10-4 (Bottom View) Pin No. 1 2 3 4 5 6 7 8 9 10 Pin Name SD BYPASS SD MODE + IN - IN VO1 -VDD GND VO2 Type I I I I I O -I I O Description Shutdown Selection Pin Common Mode Voltage Shutdown Mode Selection Pin Positive Differential Input Negative Differential Input Negative BTL Output NC Pin Power Supply Ground Positive BTL Output V1.49 2 http://www.analogexpress.com Pin Assignment (continuous) AUD4990 2W Audio Power Amplifier with Selectable Shutdown 1 2 3 4 8 7 6 5 AUD4990MS08 (Top View) Pin No. 1 2 3 4 5 6 7 8 Pin Name SD BYPASS + IN - IN VO1 VDD GND VO2 Type I I I I O I I O Description Shutdown Selection Pin Common Mode Voltage Positive Differential Input Negative Differential Input Negative BTL Output Power Supply Ground Positive BTL Output *SD MODE pin shorted to GND in the MSOP8 package www.DataSheet4U.com http://www.analogexpress.com 3 V1.49 www.DataSheet4U.com AUD4990 2W Audio Power Amplifier with Selectable Shutdown Pin Assignment (continuous) C 3 2 1 AUD4990CS09 (Ball View) B A Pin No. A1 A2 A3 B1 B2 B3 C1 C2 C3 Pin Name - IN VO1 + IN SD MODE GND VDD BYPASS VO2 SD Type I O I I I I I O I Description Negative Differential Input Negative BTL Output Positive Differential Input Shutdown Mode Selection Pin Ground Power Supply Common Mode Voltage Positive BTL Output Shutdown Selection Pin Operation Conditions Parameter Power Supply Voltage Operating Temperature Range Symbol VDD TA Min 2.7 -40 Typ Max 5.5 85 Unit V °C Ordering Information Part Number AUD4990D10-3 AUD4990D10-4 AUD4990MS08 AUD4990CS09 + WXYZ = assembly and date code Package 10-lead DFN 3x3 (Pb-Free) 10-lead DFN 4x3 (Pb-Free) 8-lead MSOP8 (Pb-Free) 9-Ball CSP09 (Pb-Free) Marking + A4990D WXYZ A4990D WXYZ A4990M WXYZ 4990 WXYZ V1.49 4 http://www.analogexpress.com Absolute Maximum Ratings If Military/Aerospace specified devices are required, please contact the Analog Express Sales Office/Distributors for availability and specifications. Supply Voltage Storage Temperature Input Voltage Power Dissipation ESD Susceptibility Junction Temperature 6.0V -65° C to +150° C -0.3V to VDD + 0.3V Internally Limited HBM 2000V 150° C Thermal Resistance θJC (DFN10 4x3) θJA (DFN10 4x3) θJC (DFN10 3x3) θJA (DFN10 3x3) AUD4990 2W Audio Power Amplifier with Selectable Shutdown 63° C/W 12° C/W 55° C/W 10° C/W Electrical Characteristics, VDD = 5V The following specifications apply for the circuit shown in Figure 1, unless otherwise specified. Limits apply for TA = 25° C. AUD4990 Symbol Parameter Conditions VIN = 0V, IO = 0A, No Load VIN = 0V, IO = 0A, 8Ω Load VSD = VSD Mode Typical 2.5 3.5 0.1 Limit 7.5 9 2.0 25 Units (Limits) mA (max) mA (max) µA (max) mV (max) kΩ (max) kΩ (min) W W IDD Quiescent Power Supply Current Shutdown Current Output Offset Voltage Resistor Output to GND ISD VOS ROUT 8.5 9.7 7.0 PO Output Power (8Ω) .


AUD AUD4990 ILI9225


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