Coupling Capacitorless Headphone Amplifiers - BD88220GUL

BD88xxxGUL is output coupling capacitorless headphone amplifier. This IC has a negative voltage generator of regulated type built-in and generates the direct regulated negative voltage from the positive voltage. It is possible to drive headphones in a ground standard with both voltage of the supply voltage and the negative voltage. Therefore a large-capacity output coupling capacitor become needless and can reduce a cost, a board area, and the height of the part. In addition, there is not the signal decrement by the low range to happen by output coupling capacitor and output load impedance and can output a rich low tone. This series has a line up with the reference voltage type and the gain type.

* This product is a STANDARD grade product and not recommend for on-vehicle devices.
Part number
Unit Quantity
Minimum Package Quantity
Packing Type
BD88220GUL-E2 Active VCSP50L2 3000 3000 Taping Yes
Vcc(Min.)[V] 2.4
Vcc(Max.)[V] 5.5
Iq[mA] 2.0
Ext. Gain No
Maximum Output Gain[dB] 6.0
Headphone Output Type Ground-Centered with Common feedback
Headphone THD+N[%] 0.0060
Headphone SNR[dB] -101.0
Headphone PSRR[dB] -80.0
Headphone Input Type Single
Headphone Output Power(Max.)[mW] 80
Operating Temperature (Min.)[°C] -40
Operating Temperature (Max.)[°C] 85
  • ・2.4V to 5.5V Single-Supply Operation
    ・No Bulky DC-Blocking Capacitors Required
    ・Low THD+N
    ・Low Operating Current
    ・Integrated Negative Power Supply
    ・Integrated Short-Circuit and Thermal-Overload Protection circuit
Pin Configuration:
Pin Configration
Other New/Updated Products Relating to Audio & Video
New Products:
Technical Data
Application Note

BD88220GUL Evaluation Board Information

Application Note

Thermal Resistance