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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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All resources
产品规格 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 26 Sep 2020 |
26 Sep 2020
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应用手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 13 Sep 2018 |
13 Sep 2018
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手册 (1)
| Resource title | Latest update | |||
|---|---|---|---|---|
| 26 Feb 2020 |
26 Feb 2020
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CAD/EDA Symbols, Footprints and Models
样片和购买
| 产品型号 | 从分销商订购 | 从ST订购 | 供货状态 | ECCN (US) | ECCN (EU) | 包装类型 | 封装 | 温度（ºC） | Country of Origin | Budgetary Price (US$)*/Qty | ||
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| 最小值 | 最大值 | |||||||||||
| TS4909IQT | 2 distributors | 立即购买 |
批量生产
|
EAR99 | NEC | Tape And Reel | VDFPN 10 3x3x1.0 | -40 | 85 | MALAYSIA | 0.454 / 1k | |
