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LM4961 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
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LM4961 bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 23 page 1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 SW-OUT Bypass Shutdown 2 VDD NC Shutdown 1 GND BW2 BW1 Band-SW VIN CCHG NC NC LM4961, LM4961LQBD www.ti.com SNAS242J – AUGUST 2004 – REVISED MARCH 2007 LM4961 Ceramic Speaker Driver Check for Samples: LM4961, LM4961LQBD 1 FEATURES DESCRIPTION The LM4961 is an audio power amplifier primarily 2 • Click and Pop Circuitry Eliminates Noise designed for driving Ceramic Speaker for applications During Turn-On and Turn-Off Transitions in Cell Phone and PDAs. It integrates a boost • Low Current Shutdown Mode converter, with variable output voltage, with an audio • Low Quiescent Current power amplifier. It is capable of driving 15Vp-p in BTL mode to 2uF+ 30 ohms load, continuous average • Mono 15Vp-p BTL Output, RL = 2μF+30Ω, f = power, with less than 1% distortion (THD+N) from a 1kHz 3.2VDC power supply. • Thermal Shutdown Protection Boomer audio power amplifiers were designed • Unity-Gain Stable specifically to provide high quality output power with a • External Gain Configuration Capability minimal number of external components. The LM4961 does not require bootstrap capacitors, or • Including Band Exchange SW snubber circuits therefore it is ideally suited for • Including Leakage Cut SW portable applications requiring high voltage output to drive capacitive loads like Ceramic Speakers. The APPLICATIONS LM4961 features a low-power consumption shutdown mode. Additionally, the LM4961 features an internal • Cellphone thermal shutdown protection mechanism. • PDA The LM4961 contains advanced pop & click circuitry KEY SPECIFICATIONS that eliminates noises which would otherwise occur during turn-on and turn-off transitions. • Quiescent Power Supply Current: 7mA (typ) The LM4961 is unity-gain stable and can be • Voltage Swing in BTL at 1% THD: 15Vp-p (typ) configured by external gain-setting resistors. • Shutdown current: 0.1 μA (typ) Connection Diagram Figure 1. LM4961LQ (5x5) (Top View) See Package Number NJB0028A 1 Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet. 2 All trademarks are the property of their respective owners. PRODUCTION DATA information is current as of publication date. Copyright © 2004–2007, Texas Instruments Incorporated Products conform to specifications per the terms of the Texas Instruments standard warranty. Production processing does not necessarily include testing of all parameters. |
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Mô tả tương tự - LM4961 |
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