Audio Interface ICs for Digital Cameras and Camcorders 1.1W to1.5W Monaural Speaker Amplifiers No.15090EBT01 BH7824FVM,BH7826FVM Description The BH7824FVM and BH7826FVM are speaker amplifier ICs for low-voltage drives and low power consumption audio, specialized for mobile telephones and other mobile audio devices. Features 1) BTL monaural speaker amplifier 2) Capable of high power 500mW/8/BTL output 3) Wide power supply voltage range 4) Supports active/shutdown modes 5) Built-in anti-pop circuit 6) Built-in thermal shutdown circuit Applications Mobile telephones, PDAs, notebook computers, DSC, DVC, and other mobile audio devices. Product lineup Part No. BH7824FVM BH7826FVM Input type Unbalanced input Balanced input Supply voltage(V) 2.4 ~ 5.5 2.6 ~ 5.5 Absolute maximum ratings(Ta=25) Parameter Symbol Limits Unit Supply voltage Vmax. 6.0 V CC Power dissipation Pd 470(*1) mW Operating temperature Topr -30 ~ +85(*2) Storage temperature Tstg -55 ~ +125 *1 Reduced by 4.7 mW/C at 25C or higher, when mounted on a 70mm70mm1.6mm PCB board. *2 Topr=70 ~ 85 is the range for performing basic operations and does not guarantee characteristics or rated output. Moreover, TSD (Thermal Shutdown) may become operable if input signals occurring in this range are excessive. 500 400 300 200 100 0 0 50 100 150 Temperature Ta Fig.1 Ta-Pd (when mounted on a PCB board) www.rohm.com 2015.06 - Rev.B 1/14 2011 ROHM Co., Ltd. All rights reserved. Power dissipation Pd mW Technical Note BH7824FVM,BH7826FVM Operating conditions (Ta=25) Ratings Parameter BH7824FVM BH7826FVM Supply voltage 2.4V ~ 5.5V 2.6 ~ 5.5 * Note: This IC is not designed to be radiation-resistant. Electrical characteristics (Unless otherwise noted Ta=25, Vcc=3.6V, f=1kHz, RL=8) Limits(Typ.) Parameter Symbol Unit Conditions BA7824FVM BA7826FVM Circuit current 1 I 3.5 3.5 mA No signal , Active mode CC1 Circuit current 2 I 0 0 A No signal, Suspend mode CC2 Voltage gain 1 G +11.5 +11.5 dBV =-20dBV,1st Op-amp gain V1 IN Voltage gain 2 G 0 dB 2nd Op-amp gain V2 *1 Maximum output voltage1 V +6.0 +6.0 dBVDSTN=1% ,BTL OM1 *1 Maximum output voltage2 V +5.1 dBVV =3.4V,DSTN=1%,BTL OM2 CC *1 Output distortion D 0.07 0.2 % V =-20dB,V SE STN IN *2 Output noise level V -94 -94 dBV No signal, SE Active mode NO *2 Suspend attenuation G -107 -107 dBVV =-20dB,V BTL S IN Bias setting voltage V 1.8 1.8 V 3pin DC voltage BIAS Suspend hold voltage / H V V 0.8 ~ V 2.0 ~ V V Active mode, Hold voltage SH1 CC CC CC Suspend hold voltage / L V 0 ~ 0.5 0 ~ 0.5 V Suspend mode, Hold voltage SH2 *1 : B.W.=0.4 ~ 30kHz *2 : DIN AUDIO www.rohm.com 2015.06 - Rev.B 2/14 2011 ROHM Co., Ltd. All rights reserved.