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TINYSINE TSA7551B Mono Amplifier TDA7498E DSP ADAU1701 Bluetooth 5.0 TWS aptX 170W 3 Ohm
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Accessories for this product
Find here a selection of useful and/or essential accessories for this product. These are specially selected by the Audiophonics team according to the characteristics of the product.
TinySine TSA7551B
Mono Amplifier TDA7498E DSP ADAU1701 Bluetooth 5.0 TWS aptX 170W 3 Ohm
The TinySine TSA7551B is a mono amplifier module featuring Bluetooth 5.1 connectivity and DSP. Its high-efficiency amplifier stage, based on a TDA7498E chip, delivers approx. 170W into 3Ω (36V, THD=1%). Bluetooth reception is entrusted to an AudioB Plus module supporting the high-resolution aptX codec for quality wireless sound reproduction. The TWS function is also supported, enabling two modules to be linked together to broadcast an audio stream simultaneously to them.
The module's DSP management uses an ADAU1701 chip. Whether Bluetooth or 3.5mm stereo input, left and right channels are mixed by DSP. The DSP can also be used to adjust gain, bass, midrange and treble levels, and a debug port for Sigma Studio is also available. The module can be programmed using the USBi Tinysine programmer (sold separately) to access a wide range of functions such as equalization, crossover, bass enhancement, multiband dynamic processing, delay compensation, etc.
The TinySine TSA7551B module features an intelligent cooling system with a fan that operates only when the board is overheated, to limit noise. The module can be powered over a wide voltage range, from 14V to 39V DC.
| 1 | External LED connector |
| 2 / 3 | DC power supply inputs |
| 4 | Jack 3.5mm input |
| 5 | DSP input / output |
| 6 | External control panel connector |
| 7 | Potentiometer connector |
| 8 | DSP programming port |
| 9 | Audio output (spk out) |
| 10 | Audio output (analog out) |
| 11 | MUTE connector |
| 12 | Bluetooth Audio B Plus receiver module |
| 13 | ADAU1701 |
Module operation
Connector for external control panel :
The module features 3 buttons for volume and playback control. External buttons can also be connected using the dedicated control port.
Pinout (refer to silkscreen on back of card) :
- P/P: Play/pause button
- VOL+: Volume up and fast forward button
- VOL-: Volume-down and fast-return button
- 1.8V
Potentiometer connector :
The module also incorporates a connector for external potentiometers (5k ~ 20k) to control volume, agius, midrange and bass. To do this, the DSP program must first be updated. TinySine offers a 4-potentiometer kit (sold separately) for this purpose.
- ADC0: Main volume
- ADC1: Bass volume
- ADC2: Midrange volume
- ADC3: Treble volume
DSP programming port :
You can load a new DSP program using TinySine's USBi JTAG DSP programmer (sold separately).
Operation of two modules in TWS :
You can combine two TWS modules to create a stereo wireless audio system.
- S1: Long press for 3s to activate pairing. Long press for 6s to reset pairing.
- S1+S2: Long press 1s to activate TWS slave mode.
- S1+S3: Long press 1s to activate TWS master mode.
- S2+S3: Long press 1s to deactivate TWS connection.
Technical characteristics
| Specifications | |
|---|---|
| Product type | Amplifier module |
| Amplification type | Class D |
| Amplifiction chip | TDA7498E |
| Channels | 1 (mono) |
| Inputs | Bluetooth 5.1 1x Jack 3.5mm |
| Output | Speaker terminals (screw terminal) |
| Output power | 220W @ 3Ω, 36V, THD 10% 170W @ 3Ω, 36V, THD 1% |
| DSP chip | ADAU1701 |
| THD | 0.05% @ 1W |
| Frequency response @ ±3dB | 20Hz-20kHz @ 4Ω |
| Input impedance | 69kΩ |
| Protections | Overvoltage Undervoltage Overload Overheating |
| Undervoltage protection threshold | 8V |
| Minimum load impedance | 3Ω |
| Gain | Min: 23.8dB Typ: 29.8dB / 33.3dB Max: 35.8dB |
| Efficiency | 85% |
| Suported Bluetooth codecs | SBC, AAC, aptX, aptX LL |
| General | |
|---|---|
| Supply voltage | 14-39VDC |
| Dimensions | 135*92*35mm |
| Input | Jack 3.5mm |
| Input | Bluetooth |
| Output | Speaker terminal |
| Channel | 1 (Mono) |
| Class | Class D / T |
| Amplifier chip | TDA7498E |
| Power (W) | 170.0 |
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