Ultra low power stereo headphone amplifier with capacitor-less output

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  • The TS4909 is a stereo audio amplifier designed to drive headphones in portable applications. The integrated phantom ground is a circuit topology that eliminates the heavy output coupling capacitors. This is of primary importance in portable applications where space constraints are very high. A single-ended configuration is also available, offering even lower power consumption because the phantom ground can be switched off. Pop-and-click noise during switch-on and switch-off phases is eliminated by integrated circuitry.

    Specially designed for applications requiring low power supplies, the TS4909 is capable of delivering 31 mW of continuous average power into a 32 Ω load with less than 1% THD+N from a 3 V power supply. Featuring an active low standby mode, the TS4909 reduces the supply current to only 10 nA (typ.). The TS4909 is unity gain stable and can be configured by external gain-setting resistors.

    主要特性

    • No output coupling capacitors necessary
    • Pop-and-click noise reduction circuitry
    • Operating from VCC = 2.2 V to 5.5 V
    • Standby mode active low
    • Output power:
      • 158 mW at 5 V, into 16 Ω with 1% THD+N max (1 kHz)
      • 52 mW at 3.0 V into 16 Ω with 1% THD+N max (1 kHz)
    • Ultra-low current consumption: 2.0 mA typ. at 3 V
    • Ultra-low standby consumption: 10 nA typ.
    • High signal-to-noise ratio: 105 dB typ. at 5 V
    • High crosstalk immunity: 110 dB (F = 1 kHz) for single-ended outputs
    • PSRR: 72 dB (F = 1 kHz), inputs grounded, for phantom ground outputs
    • Low tWU: 50 ms in PG mode, 100 ms in SE mode
    • Available in lead-free DFN10 3 x 3 mm

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样片和购买

产品型号
封装
包装类型
温度(ºC) 供货状态
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min
max
TS4909IQT VDFPN 10 3x3x1.0 Tape And Reel -40 85
批量生产
0.454 1000 EAR99
更多信息

Country of Origin:

MALAYSIA

查看供货情况

Distributor availability ofTS4909IQT

代理商名称
地区 库存 最小订购量 Third party link
ARROW EUROPE 3050 0 Order Now
MOUSER WORLDWIDE 2998 1 Order Now

代理商库存报告日期: 2019-10-04

代理商名称

ARROW

库存

3050

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

2998

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-04

立即购买

TS4909IQT

封装

VDFPN 10 3x3x1.0

包装类型

Tape And Reel

单价(US$)

0.454*

Distributor availability ofTS4909IQT

代理商名称
地区 库存 最小订购量 Third party link
ARROW EUROPE 3050 0 Order Now
MOUSER WORLDWIDE 2998 1 Order Now

代理商库存报告日期: 2019-10-04

代理商名称

ARROW

库存

3050

Min.Order

0

地区

EUROPE Order Now

MOUSER

库存

2998

Min.Order

1

地区

WORLDWIDE Order Now

代理商库存报告日期: 2019-10-04

Operating Temperature (°C)

(min)

-40

(max)

85

供货状态

批量生产

单价(US$)

0.454

数量

1000

ECCN (US)

EAR99

Country of Origin

MALAYSIA

(*) 建议转售单价(美元)仅用于预算用途。如需以当地货币计价的报价,请联系您当地的 ST销售办事处 或我们的 经销商

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技术文档

    • 描述 版本 文档大小 操作
      DS4580
      Dual mode low power 150 mW stereo headphone amplifier with capacitor-less and single-ended outputs
      9.0
      581.28 KB
      PDF
      DS4580

      Dual mode low power 150 mW stereo headphone amplifier with capacitor-less and single-ended outputs

    • 描述 版本 文档大小 操作
      AN2622
      TS4909 low power stereo headphone amplifier evaluation board user guidelines
      1.2
      105.14 KB
      PDF
      AN2622

      TS4909 low power stereo headphone amplifier evaluation board user guidelines

出版刊物和宣传资料

    • 描述 版本 文档大小 操作
      ST’s solutions for mobile devices 3.2
      2.13 MB
      PDF

      ST’s solutions for mobile devices

产品型号 供货状态 封装 等级规格 符合RoHS级别 材料声明**
TS4909IQT
批量生产
VDFPN 10 3x3x1.0 工业 Ecopack1

TS4909IQT

Package:

VDFPN 10 3x3x1.0

Material Declaration**:

PDF XML

Marketing Status

批量生产

Package

VDFPN 10 3x3x1.0

Grade

Industrial

RoHS Compliance Grade

Ecopack1

(**) The Material Declaration forms available on st.com may be generic documents based on the most commonly used package within a package family. For this reason, they may not be 100% accurate for a specific device. Please contact our sales support for information on specific devices.