logo
サインイン
/在籍

SGM4918

アクティブ

80mW, Capless, Stereo Headphone Amplifier with Shutdown

Preview Image
Preview Image

The SGM4918 is stereo headphone amplifier which is designed for portable applications and can operate from a 2.7V to 5.1V single supply. Capless design can produce a ground-referenced output from a single power supply, and can eliminate output DC-blocking capacitors for less-component height and low-cost. For SGM4918B, the internal gain setting (-2V/V) is to further reduce component count. For SGM4918A, the gain can be adjusted by external feedback resistors.

The SGM4918 has low quiescent current 5.8mA at 5V supply, low 0.03% THD+N, 80mW per channel into 32Ω load from 5V power supply at THD+N = 0.1%. The high supply rejection ratio (PSRR) of -78dB at 217Hz allows the device to operate from noisy digital supplies without an additional linear regulator. The device provides short-circuit and thermal-overload protections. Build-in shutdown control also helps for pop/click-free on/off control.

The SGM4918 is available in a Green TQFN-3×3-10L package. It operates over an ambient temperature range of -40 to +85.

More
特性
  • Supply Voltage Range: 2.7V to 5.1V

  • SGM4918A: External Feedback Gain Network

    SGM4918B: Fixed -2V/V Gain

  • Capless Structure

    Eliminates Ground-Referenced Outputs

    Eliminates Output DC-Blocking Capacitors

    Provides Flat Frequency Response

  • 80mW into 32Ω Load from 5V Power Supply at THD+N = 0.1% (Typical, per Channel)

  • THD+N = 0.03% (f = 1kHz)

  • High PSRR: -78dB (at 217Hz)

  • Quiescent Current: 5.8mA (TYP)

  • Shutdown Control

  • Short-Circuit and Thermal-Overload Protections

  • Under-Voltage Lockout Function

  • -40 to +85 Operating Temperature Range

  • Available in a Green TQFN-3×3-10L Package

アプリケーション

Smart Phones

Portable Audio Equipment

Notebook PCs

PDAs

注文書
Part Number
StatusPackagePinsPd-Free
RoHS
REACH
Green
MSL RatingOperating Temperature RangeMaterial ContentReliability Report
Unit Resale Price*
(Volume Range: in USD)
Lead Time**
(Volume Range: Days)
SGM4918AYD10G/TR
アクティブ
TDFN-3×3-10L
10
Yes
YesYesYesMSL3
-40℃ to +85℃
閲覧
閲覧
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days
SGM4918BYD10G/TR
アクティブ
TDFN-3×3-10L
10
Yes
YesYesYesMSL3
-40℃ to +85℃
閲覧
閲覧
1-24 units : $1.05/unit
25-99 units : $0.9/unit
100-249 units : $0.75/unit
250-499 units : $0.6/unit
500-999 units : $0.525/unit
1000-9999 units : $0.39/unit
3K-9K : 14 days
10K-99K : 28 days
100K-999K : 70 days
1000K and above : 98 days

* 再販価格は参考価格です。正式な見積もりについては、代理店にお問い合わせください。

** 提供されるリードタイムは参考情報であり、異なる状況に応じて変更される可能性があります。

Logo
SGマイクロ社(SGMICRO)は、高性能、高信頼性のアナログ信号処理およびシステム電源管理集積回路の開発、製造、販売に注力しています。 産業オートメーション、新エネルギー、自動車、通信、コンピュータ、民生用電子機器、医療機器アプリケーション向けに、さまざまなアナログ信号調節と革新的な電源ソリューションを提供しています。
プライバシーステートメント プライバシーポリシー Copyright © 2024 SG MICRO CORP 無断複写・転載を禁じます。