MT8292 Datasheet – Audio Multiplexer
Audio Multiplexer with Headphone Driver & PGA Output
MT8292 overview
The MT8292 is an Audio Multiplexer with Headphone Driver & PGA Output made by MediaTek Inc., supplied in a QFN 56 Pin Type package. The absolute maximum ratings table on this page lists the 6 limits from the manufacturer's datasheet that must not be exceeded. This page brings together the MT8292 pinout and maximum ratings, with the full datasheet PDF to preview below or download.
The MediaTek MT8292 introduces the advantages of an input multiplexer, the headphone driver and the PGA outputs. The MT8292 performs 8:1 stereo input multiplexer. The analog input pins can either independently support GPIO function or provide extra GPIO pins to use.
Each of the stereo PGA outputs as well as a headphone driver can reach 2Vrms in a 9V or 12V supply environment. On the other hand, through the two wire control, the MT8292 can control the digital function of the host IC (ie., the MT538x for example). Together with an external audio ADC and an audio DAC, the MT8292 can reach high voltage and gain output.
Datasheet
MT8292 features
- 56-pin QFN package
- Allows 2Vrms input swing from analog input and supports 2Vrms PGA output
- MUTE and PGA function
- Headphone driver output
- Stereo PGA gain control from 15dB to -36dB for each output
- Headphone PGA gain from 21dB to -36dB for output
- Two Wire control
- General purpose I/O function
- +8.2V to +13.2V analog power supply
- +3.0V to +3.6V digital power supply
- Eight channels of analog output (three L/R line outputs and a headphone output)
- 8-channel analog multiplexer input 96dB SNR and dynamic range
- Analog inputs also share general purpose I/O function
MT8292 pinout
| Pin | Name | Description |
|---|---|---|
| 1 | AIN8R | Channel 8 right input |
| 2 | AIN8L | Channel 8 left input |
| 3 | MVDD33 | Multiplexer positive supply 3.3 voltage |
| 4 | VCM33 | Multiplexer midrail divider decoupling pin |
| 5 | MGND33 | Multiplexer negative supply |
| 6 | ADCOUTL | Analog multiplexer left output |
| 7 | ADCOUTR | Analog multiplexer right output |
| 8 | HPOUTL | Headphone right channel output |
| 9 | HPGND | Headphone ground supply pin |
| 10 | HPVDD | Headphone power supply pin |
| 11 | HPOUTR | Headphone right channel output |
| 12 | AGND | Analog negative supply |
| 13 | PGA0OUTL | PGA channel 0 left output |
| 14 | PGA0OUTR | PGA channel 0 right output |
| 15 | AVDD | Analog positive supply 12 voltage or 9 voltage |
| 16 | VCMPGA | PGA midrail divider decoupling pin |
| 17 | PGA2OUTL | PGA channel 2 left output |
| 18 | PGA2OUTR | PGA channel 2 right output |
| 19 | PGA1OUTL | PGA channel 1 left output |
| 20 | PGA1OUTR | PGA channel 1 right output |
| 21 | INPUT2R | Channel 2 right input to PGA gain module |
| 22 | INPUT2L | Channel 2 left input to PGA gain module |
| 23 | INPUT0R | Channel 0 right input to PGA gain module |
| 24 | INPUT0L | Channel 0 left input to PGA gain module |
Show all 27 pins
| Pin | Name | Description |
|---|---|---|
| 25 | INPUT1R | Channel 1 right input to PGA gain module |
| 26 | INPUT1L | Channel 1 left input to PGA gain module |
| 27 | CL | Control clock pin in serial mode |
Absolute maximum ratings
| Parameter | Value | Conditions |
|---|---|---|
| Analog supply voltage | Min -0.3V / Max +14.8V | Analog supply voltage |
| Digital supply voltage | Min -0.3V / Max +3.6V | Digital supply voltage |
| Analog inputs voltage | Min AGND -0.3V / Max AVDD +0.3V | Analog inputs voltage |
| Storage temperature, Tstg | Min - 40° C / Max +150° C | Storage temperature, Tstg |
| Junction temperature, Tj | Min - 40° C / Max +125° C | Junction temperature, Tj |
| Operating temperature, Tp | Min - 10° C / Max + 70°C | Operating temperature, Tp |
MT8292 applications
- Consumer Electronics
- Mobile Devices
- Industrial Control
- Automotive Infotainment
- Home Appliances
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