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TFA9842J
General description
The TFA9842J contains two identical audio power amplifiers. The TFA9842J can be used as two Single-Ended (SE) channels with a fixed gain of 26 dB or one Bridge-Tied Load (BTL) channel with a fixed gain of 32 dB.
The TFA9842J comes in a 9-pin DIL-bent-SIL (DBS9P) power package. The TFA9842J is pin compatible with the TFA9841J and TFA9843J.
The TFA9842J contains a unique protection circuit that is solely based on multiple temperature measurements inside the chip. This gives maximum output power for all supply voltages and load conditions with no unnecessary audio holes. Almost any supply voltage and load impedance combination can be made as long as thermal boundary conditions (number of channels used, external heatsink and ambient temperature) allow it.
Features
- SE: 1 W to 7.5 W; BTL: 2 W to 15 W operation possibility
- Soft clipping
- Standby and mute mode
- No on/off switching plops
- Low standby current
- High supply voltage ripple rejection
- Outputs short-circuit protected to ground, supply and across the load
- Thermally protected
- Pin compatible with the TFA9841J and TFA9843J.
Products/packages
| Type number | North American Type number | Ordering code (12NC) | Product status | Package | Packing | Marking | Chemical content | Leadfree conversion date |
|---|---|---|---|---|---|---|---|---|
| TFA9842J/N1 | TFA9842J | 9352 741 36112 | Volume production | SOT523-1
(DBS9P) | Tube | Standard Marking | TFA9842J/N1
| Always Pb-free |
Pricing/ordering/availability
| Type number | Ordering code(12NC) | Indicative price/unit($) | Region | Distributor | In stock | Inventory date | Buy online | Samples |
|---|---|---|---|---|---|---|---|---|
| TFA9842J/N1 | 9352 741 36112 | NA | AVNET ELECTRONICS MARKETING | 860 | 11/25/2008 | Buy online | Order samples | |
| NA | DIGI-KEY CORPORATION | 122 | 11/29/2008 | Buy online |
Applications
- Television
- PC speakers
- Boom box
- Mini and micro audio receivers.
Related applications
50-60 Hz CRT integrated DTV (TV210D)
DVB-T iDTV reference solution (TV505D)
Mid-range integrated DTV (TV810)
Mainstream integrated LCD DTV reference designs TV520
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