All the specifications of the National Semiconductor Piezo Audio Amplifiers can be found on there website.
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1 R sonitron
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3 Specifications All the specifications of the National Semiconductor Piezo Audio Amplifiers can be found on there website. L M4960 P iezoelec tric S peaker Driver G eneral Des cription T he LM4960 utilizes a switching regulator to drive a dual audio power amplifier. It delivers 4V P -P mono-b T L to a ceramic speaker with less than.0% THD+N while operating on a 3.0V power supply. The LM4960 s switching regulator is a current-mode boost converter operating at a fixed frequency of.6mhz. B oomer audio power amplifiers were designed specifically to provide high quality output power with a minimal amount of external components. The LM4960 does not require output coupling capacitors or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications where minimal power consumption is a primary requirement. T he LM4960 features a low-power consumption externally controlled micropower shutdown mode. Additionally, the LM4960 features and internal thermal shutdown protection mechanism along with a short circuit protection. The LM4960 is unity-gain stable and can be configured by external gain-setting resistors. K ey S pecifications n V V DD = 3.0 T HD+N % 4V P -P (typ) n Power supply range 3.0 to 7V n S witching Frequency.6MHz (typ) F eatures n Low current shutdown mode n "Click and pop" suppression circuitry n Low Quiescent current n Unity-gain stable audio amplifiers n E xternal gain configuration capability n Thermal shutdown protection circuitry n Wide input voltage range (3.0V - 7V ) n.6mhz switching frequency A pplic ations n Mobile phone n P DA s April 005 L M4960 P iezoelectric S peaker Driver C onnection Diagram L M4960S Q Top View Order Number LM4960SQ See NS Package Number B oomer is a registered trademark of National S emiconductor C orporation. 005 National S emiconductor Corporation DS Overview available Piezo Audio Amplifiers of National Semiconductor: Product ID LM480B LM4953 LM4960 LM496 LM496 LM48555 Description Vp-p boosted ceramic speaker driver.6 Vp-p ceramic speaker driver with ground reference, ultra low noise, fixed gain 4 Vp-p Piezoelectric speaker driver 5 Vp-p ceramic speaker driver 5 Vp-p ceramic speaker driver with band switch function, can drive LM495 for stereo solution 5.5 Vp-p ceramic speaker driver October 00 3
4 Speaker output Input Voltage 5V Designator Description Package Quantity R, R9 Chip Resistor 70k/5% R0805 R Chip Resistor 30k/5% R R3 Chip Resistor 0k/5% R R4 Chip Resistor 470k/5% R Chip Resistor 0R/5% R R6, R8, R Chip Resistor 0k/5% R C, C, C5 Ceramic Capacitor 4.7µF/5V/X5R C0 3 8 C3 Ceramic Capacitor 0pF/00V/X7R C C4 Ceramic Capacitor 0nF/6V/X7R C C6 Ceramic Capacitor 00nF/50V/X7R C0805 C7 Ceramic Capacitor 33nF/50V/X7R C0805 C9 Ceramic Capacitor 0pF/00V/X7R (opt) C L SDR030-00ML SMD Power Inductor SDR030 4 D, D MBR050LT 0V, 0.5A shottky diode SOD-3 U LM4960SQ Piezo Ceramic Speaker Amplifier LLP8 4
5 3 4 A A VDD B Bypass B 0 VinA 7 Input Max +/- 35mVpp Vamp VinB 6 Reg Shutdown Amp Shutdown VoB VoA TAB Vdd 4 SW VDD FB 8 C C Avd = * (Rf/Ri) = * (740/0) = 74 Output 4Vpp D D B-900 Sint-Niklaas (Belgium) Piëzo Audio Amplifier 3 4 5
6 PIEZO AUDIO AMPLIFIERS INTRODUCTION The Piezo Audio Amplifiers-series are a total solution to drive piezoceramic sound components. A range of different PCB sizes, amplifier topologies and maximum voltage peak to peak outputs, cover a wide solution to piezo audio amplification. Piezo audio amplifiers are designed to handle capacitive loads and have the possibility to deliver large voltages peak to peak over the complete audio frequency range. The heart of a piezo audio component is a ceramic piezo stone that interacts when it feels a certain voltage difference. An increase of a voltage peak to peak will have a larger piezo deformation and results in a larger sound output. The PAA-series give a quality amplifier solution where a quality sound is needed. GENERAL OVERVIEW PAA SERIES Model PAA-MAX PAA-LM PAA-StepUpBTL-0 Measurements PCB(mm) Voltage input (V) MAX Capacitance Piezo Speaker Max Voltage Output Vpp Voltage Topology Amplifier classification Used amplifier configuration 4x6.5mm 5x5mm 40x35mm 5V 5V 5V-5V µf 600nF µf 0Vpp 4Vpp 60Vpp Integrated step up converter Integrated step up converter Step up converter Class G Class AB Class AB Fully Differential Bridge Tied Load Bridge Tied Load Average current consumption of speaker and amplifier (ma) 5mA 85mA 40mA-400mA ( Watt) PAA-MAX PAA-LM4960SQ-0 PAA-StepUpBTL-0 For more information see the Sonitron Catalogue 00 Piezo Audio Amplifiers Page 03 - (or click the link below) October 00 6
7 PAA-StepUpBTL-0 40x35 PAA-LM4960SQ-0 5x5 PAA-MAX x6.5 PAA-LT x5 Piezo Speakers & Piezo Audio Amplifiers SPS SPS SPS SPS SPS-0-03 sonitron The content, elements and structure of these pages and of this datasheet are protected by copyright laws. Any reproduction, publication, modification, distribution or exploitation of this information, whether in whole or in part, without an express written permission is prohibited. Kasteelstraat 93, 900 Sint-Niklaas BELGIUM Tel.: Fax: sales@sonitron.be Internet: October 00 7
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