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4 x 100W Class D Bluetooth Audio Amplifier Board – TSA8498

This is a 4x100W audio amplifier board with Audio B plus Bluetooth module. It has integrated 2xST high performance TDA7498 chip which supports dual channel audio amplification. Each channel is capable of giving nominal power output simultaneously and continuously. This board can be powered by any DC 14V-39V* power supply.

Power input port can be power jack or screw terminal. The DC input jack is 2.5mm with positive core polarity and if you use screw terminal, please pay attention to the polarity! Wrong polarity will blow up your board.

It has a smart cooling system, however, the fan does not operate in normal condition to reduce the noise.

The fan only starts when the chip temperature¬†exceeds 65¬įC. Once¬†the¬†temperature¬†goes¬†down,¬†the¬†fan¬†stop running.

It is perfect for your Hi-Fi audio application, the audio source can be an RCA input or Bluetooth. It is compatible with all the Bluetooth devices that support media audio including iPhone and Android. Let your smartphone pair up with this board and play a piece of music.

  • MUTE: Connect MUTE pin¬†to GND pin. The amplifier board will go into mute state.
  • STBY: Connect STBY pin¬†to GND pin. The amplifier board will go into standby state to save the board power.
  • B/A:¬†Connect B/A pin¬†to GND pin. The Bluetooth input will always be the audio source no matter which audio source¬†is selected by the switch position.

 

Note: We have tested it. It also works well with 12VDC power also, but, we suggest you to use DC 14V-39V power if possible.

Specification:

Following table lists all typical data of the amplifier board. For full specification, please refer to the data sheet of ST’s TDA7498 chip.

TA¬†=¬†25¬†¬įC,¬†fIN¬†=¬†1¬†kHz¬†sine¬†wave,¬†RL=¬†6ő©,¬†VCC¬†=¬†36V.¬†(Unless¬†otherwise¬†stated)

Parameter

Condition

Min

Typ

Max

Supply Voltage (v)

14

36

40

Quiescent Current (mA)

FAN ON,STBY Disable

90

FAN ON,STBY Enable

50

FAN OFF,STBY Disable

40

FAN OFF,STBY Enable

10

Input Sensitivity (mV)

25.6dB

1356

31.6dB

696

35.1dB

460

37.6dB

341

Input Impedance (Kohm)

48

60

Gain (dB)

GAIN0 = L, GAIN1 = L

24.6

25.6

26.6

GAIN0 = L, GAIN1 = H

30.6

31.6

32.6

GAIN0 = H, GAIN1 = L

34.1

35.1

36.1

GAIN0 = H, GAIN1 = H

36.6

37.6

38.6

Output Power (W rms)

THD = 10%

100

Efficiency (%)

Both channels output rating power.

>90

Minimum Load (ohm)

6

Frequency Response (dB)

¬Ī3dB

20

22k

Operating¬†Temperature¬†(‚ĄÉ)

0

20

50

 

Features:

  • Size: 15.5cm x 11cm
  • Comes with a smart cooling system
  • Bluetooth 4.0
  • External mute control port
  • External Bluetooth/LINE IN control port
  • Working voltage: DC 14V-39V
  • Over/under voltage protection
  • Over current protection
  • Over temperature protection

Applications:

  • Personal computer
  • Background music system
  • Musical¬†instrument¬†amplifiers
  • Home DIY
  • Car audio

Documents:

 


ūüõ†ÔłŹ Dive into our collection of DIY Kits, ūüĒä Audio Amplifiers, Digital Scoreboards, FM transmitters, and more!
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