công cụ tìm kiếm bảng dữ liệu linh kiện điện tử |
|
LM4990 bảng dữ liệu(PDF) 1 Page - Texas Instruments |
|
LM4990 bảng dữ liệu(HTML) 1 Page - Texas Instruments |
1 / 28 page LM4990 www.ti.com SNAS184E – DECEMBER 2002 – REVISED MAY 2013 LM4990 2 Watt Audio Power Amplifier with Selectable Shutdown Logic Level Check for Samples: LM4990 1 FEATURES DESCRIPTION The LM4990 is an audio power amplifier primarily 2 • Available in Space-Saving Packages: WSON, designed for demanding applications in mobile Exposed-DAP MSOP-PowerPAD, VSSOP, and phones and other portable communication device DSBGA applications. It is capable of delivering 1.25 watts of • Ultra Low Current Shutdown Mode continuous average power to an 8 Ω BTL load and 2 watts of continuous average power (NGZ and DGQ • Improved Click and Pop Circuitry Eliminates only) to a 4 Ω BTL load with less than 1% distortion Noise During Turn-On and Turn-Off (THD+N+N) from a 5VDC power supply. Transitions • 2.2 - 5.5V Operation Boomer audio power amplifiers were designed specifically to provide high quality output power with a • No Output Coupling Capacitors, Snubber minimal amount of external components. The Networks or Bootstrap Capacitors Required LM4990 does not require output coupling capacitors • Unity-Gain Stable or bootstrap capacitors, and therefore is ideally suited for mobile phone and other low voltage applications • External Gain Configuration Capability where minimal power consumption is a primary • User Selectable Shutdown High or Low Logic requirement. Level The LM4990 features a low-power consumption shutdown mode. To facilitate this, Shutdown may be APPLICATIONS enabled by either logic high or low depending on • Mobile Phones mode selection. Driving the shutdown mode pin either • PDAs high or low enables the shutdown pin to be driven in a likewise manner to enable shutdown. • Portable Electronic Devices The LM4990 contains advanced pop & click circuitry KEY SPECIFICATIONS which eliminates noise which would otherwise occur during turn-on and turn-off transitions. • Improved PSRR at 217Hz & 1KHz: 62dB The LM4990 is unity-gain stable and can be • Power Output at 5.0V, 1% THD+N, configured by external gain-setting resistors. – 4 Ω (NGZ and DGQ only): 2W (Typ) • Power Output at 5.0V, 1% THD+N, 8 Ω: 1.25W (Typ) • Power Output at 3.0V, 1% THD+N, 4 Ω: 600mW (Typ) • Power Output at 3.0V, 1% THD+N, 8 Ω: 425mW (Typ) • Shutdown Current: 0.1µA (Typ) 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 © 2002–2013, 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. |
Số phần tương tự - LM4990_15 |
|
Mô tả tương tự - LM4990_15 |
|
|
Link URL |
Chính sách bảo mật |
ALLDATASHEET.VN |
Cho đến nay ALLDATASHEET có giúp ích cho doanh nghiệp của bạn hay không? [ DONATE ] |
Alldatasheet là | Quảng cáo | Liên lạc với chúng tôi | Chính sách bảo mật | Trao đổi link | Tìm kiếm theo nhà sản xuất All Rights Reserved©Alldatasheet.com |
Russian : Alldatasheetru.com | Korean : Alldatasheet.co.kr | Spanish : Alldatasheet.es | French : Alldatasheet.fr | Italian : Alldatasheetit.com Portuguese : Alldatasheetpt.com | Polish : Alldatasheet.pl | Vietnamese : Alldatasheet.vn Indian : Alldatasheet.in | Mexican : Alldatasheet.com.mx | British : Alldatasheet.co.uk | New Zealand : Alldatasheet.co.nz |
Family Site : ic2ic.com |
icmetro.com |