BD88420GUL-E2 ROHM

Headphone Amplifiers Coupling Capacitorless Headphone Amplifiers No.11102EAT04 BD88400GUL,BD88410GUL,BD88415GUL,BD88420GUL Description 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 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-capacity output coupling capacitor becomes 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. Features 1) 2.4V to 5.5V Single-Supply Operation 2) No Bulky DC-Blocking Capacitors Required 3) No Degradation of Low-Frequency Response Due to Output Capacitors 4) Ground-Referenced Outputs 5) Gain setting BD88400GUL: Variable gain with external resistors BD88410GUL: -1.0V/V BD88415GUL: -1.5V/V BD88420GUL: -2.0V/V 6) Low THD+N 7) Low Supply Current 8) Integrated Negative Power Supply 9) Integrated Short-Circuit and Thermal-Overload Protection 10) Small package VCSP50L2 (2.1mm x 2.1mm) Applications Mobile Phones, Smart Phones, PDAs, Portable Audio Players, PCs, TVs, Digital Cameras, Digital Video Cameras, Electronic Dictionaries, Voice Recorders, Bluetooth Head-sets, etc Line up Supply Supply Maximum Noise Gain THD+N PSRR Type Voltage Current Output Power Voltage Package V/V % dB V mA mW Vrms Variable gain with external BD88400GUL resister BD88410GUL -1.0 80 0.006 2.0 -80 VCSP50L2 2.45.5 10 (VDD=3.3V,RL=16 (VDD=3.3V,RL=16 (No signal) (f=217Hz) (2.1mm x 2.1mm) THD+N1%,f=1kHz) Po=10mW,f=1kHz) BD88415GUL -1.5 BD88420GUL -2.0 www.rohm.com 2011.03 Rev. A 1/21 2011 ROHM Co., Ltd. All rights reserved. Technical Note BD88400GUL,BD88410GUL,BD88415GUL,BD88420GUL Absolute maximum ratings Parameter Symbol Ratings Unit SGND to PGND voltage V 0.0 V GG SVDD to PVDD voltage V -0.30.3 V DD SVSS to PVSS voltage V 0.0 V SS SGND or PGND to SVDD, PVDD voltage V -0.36.0 V DG SVSS, PVSS to SGND or PGND voltage V -3.50.3 V SG SGND to IN - voltage V (SVSS-0.3)2.8 V IN SGND to OUT - voltage V (SVSS-0.3)2.8 V OUT PGND to C1P- voltage V (PGND-0.3)(PVDD+0.3) V C1P PGND to C1N- voltage V (PVSS-0.3)(PGND+0.3) V C1N SGND to SHDN B- voltage V (SGND-0.3)(SVDD+0.3) V SH Input current I -1010 mA IN Power Dissipation P 1350 * mW D Storage Temperature Range T -55150 STG * In operating over 25 , de-rate the value to 10.8mW/. This value is for mounted on the application board (Grass-epoxy, size: 40mm x 60mm, H=1.6mm, Top Copper area = 79.9%, Bottom Copper area = 80.2%). Operating conditions Ratings Parameter Symbol Unit Min. Typ. Max. Supply Voltage Range V ,V 2.4 - 5.5 V SVDD PVDD Operating Temperature Range T -40 - +85 OPR www.rohm.com 2011.03 Rev. A 2/21 2011 ROHM Co., Ltd. All rights reserved.