80-mW Coupling Capacitorless Stereo Headphone Amplifiers - BD88400FJ

BD88400FJ is an output coupling capacitorless headphone amplifier. This IC has a built-in regulated negative voltage generator type that generates the direct regulated negative voltage from the supply voltage. It is possible to drive headphones in a ground standard with both voltage of the positive voltage (+2.4V) and the negative voltage (-2.4V). Therefore a large capacitance output coupling capacitor becomes needless and can reduce cost, board area and height of the part. In addition, there is no signal degradation at the low range caused by the output coupling capacitor and output load impedance, thus a rich low tone can be outputted.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD88400FJ-GE2 Active SOP-J14 2500 2500 Taping Yes
Vcc(Min.)[V] 2.4
Vcc(Max.)[V] 5.5
Ext. Gain Yes
Headphone Output Type Ground-Centered
Headphone THD+N[%] 0.0060
Headphone PSRR[dB] -80.0
Headphone Input Type Single
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
    • No Bulky DC-Blocking Capacitors Required
    • No Degradation of Low-Frequency Response Due to Output Capacitors
    • Ground-Referenced Outputs
    • Gain setting: Variable Gain with External Resistors
    • Low THD+N
    • Low Supply Current
    • Integrated Negative Power Supply
    • Integrated Short-Circuit and Thermal-Overload Protection
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Technical Data
Application Note

BD88400FJ Evaluation Board Information

Application Note

Thermal Resistance