BU7150NUV

Compact Headphone Amplifiers Headphone Amplifier Designed for 0.93V Low Voltage Operation BU7150NUV No.11102ECT01 ●Description BU7150NUV is Audio Amplifier designed for Single-cell battery operated audio products (VDD = 0.93 ~ 3.5V, at Ta=0~85°C). BU7150NUV can be selected in single-ended mode for stereo headphone and BTL mode for mono speaker operations. For BU7150NUV at VDD = 1.5V, THD+N = 1%, the output power is 14mW at RL = 16Ω in single-ended mode and the output power is 85mW at RL = 8Ω in BTL mode. ●Features 1) Wide battery operation Voltage (0.93V~3.5V, Ta=0~85°C) (1.03V~3.5V, Ta= -40~85°C) 2) BU7150NUV can be selected in single-ended mode for stereo headphone and BTL mode for mono speaker operation 3) Unity-gain stability 4) Click and pop-noise reduction circuit built-in 5) Shutdown mode(Low power mode) 6) High speed turn-on mute mode 7) Thermal shutdown protection circuit 8) Power-on reset circuit not sensed during start-up slew rate of supply voltage 9) Small package (VSON010V3030) ●Applications Noise-canceling headphone, IC recorder, Mobile phone, PDA, Electronic toys etc.. ●Absolute Maximum Ratings (Ta=25℃) Parameter Supply Voltage Input Voltage Input Current Power Dissipation Storage Temperature Range Symbol VDD VIN IIN PD TSTG Ratings 4.5 VSS-0.3~VDD+0.3 -10~10 560 * -55~+150 Unit V V mA mW °C *For operating over 25°C, de-rate the value at 5.6mW/°C. This value is for IC mounted on 74.2 mm x 74.2mm x 1.6mm glass-epoxy PCB of single-layer. ●Operating conditions Parameter Operation Temperature Range Supply Voltage (Note 1,2) Symbol TOPR VDD Ratings Min. -40 0.93 Typ. Max. 85 3.5 Unit °C V Note 1: If the supply voltage is 0.93V, BU7150NUV does not operate at less than 0°C. If the supply voltage is more than 1.03V, BU7150NUV operates until -40°C. (But, it is not the one which guarantees the standard value for electric characteristics.) Note 2: Ripple in power supply line should not exceed 400mVP-P.(VDD=1.5 V, Ta=25°C ) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1/16 2011.05 - Rev.C BU7150NUV ●Electrical characteristics Ta=25°C, VDD=1.5V, f=1kHz, VSS=GND unless otherwise specified. Limits Parameter Symbol Min. Typ. Max. No Signal Operating Current Shutdown Current Mute Current Output Offset Voltage IDD ISD IMUTE VOFS 70 Maximum Output Power PO Total Harmonic Distortion +Noise THD+N Output Voltage Noise Crosstalk VNO CT Power Supply Rejection Ratio PSRR Input Logic High Level Input Logic Low Level VIH VIL 0.7 66 0.3 dB V V 0.1 10 85 62 0.5 % μVrms dB dB 14 0.2 0.5 mW % 1 3 15 5 85 1.4 9 50 - Technical Note Unit mA μA μA mV mW Conditions No load, No signal SDB Pin=VSS MUTEB Pin=VSS, SE | VOUT1 – VOUT2 |, No signal RL=8Ω, BTL, THD+N=1% RL=16Ω, SE, THD+N=1% 20kHz LPF, RL=8Ω, BTL, PO=25mW 20kHz LPF, RL=16Ω, SE,PO=5ｍW 20kHz LPF + A-weight RL=16Ω, SE, 1kHz BPF Ripple voltage=200mVP-P, RL=8Ω, BTL, CBYPASS=4.7μF Ripple voltage=200mVP-P, RL=16Ω, SE, CBYPASS=4.7μF MUTEB Pin, SDB Pin MUTEB Pin, SDB Pin “BTL” is BTL-mode when MODE Pin = VDD, “SE” is single-ended mode when MODE Pin = VSS. Turn-on time in BTL mode is about 11 times faster than single-ended mode. Also, BTL mode does not have MUTE mode. When MUTEB Pin = VSS, then it will be shutdown mode. ●Block diagram IN1 1 10 VDD SDB 2 Control Logic MUTEB 3 Bias Generator 9 OUT1 8 MODE BYPASS 4 7 OUT2 IN2 5 6 VSS TOP VIEW Fig. 1 Block diagram www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 2/16 2011.05 - Rev.C BU7150NUV ●Electrical characteristics waveform (Reference data) Ta=25°C, f=1kHz, VSS=GND unless otherwise specified. Using circuits are Fig.34 and Fig.35. Also, RL=16Ω for single ended mode, RL=8Ω for BTL mode） 0 VDD=1.5V, SE m ode -10 -20 THD+N [dB] THD+N [dB] -30 -40 -50 -60 -70 10n 100n 10u 100u 1m 10m 100m Output Power [W] Fig. 2 THD+N vs . Output Power 1u -10 -20 -30 -40 -50 -60 -70 10n 100n 0 VDD=1.5V, BTL m ode Technical Note 10u 100u 1m 10m 100m Output Power [W] Fig. 3 THD+N vs . Output Power 1u 0 VDD=1.2V, SE m ode -10 -20 -30 -40 -50 -60 10n 100n 1u 10u 100u 1m 10m 100m Output Power [W] Fig. 4 THD+N vs . Output Power 0 VDD=1.2V, BTL m ode -10 -20 -30 -40 -50 -60 10n 100n 10u 100u 1m 10m 100m Output Power [W] Fig. 5 THD+N vs . Output Power 1u THD+N [dB] 0 -10 -20 THD+N [dB] THD+N [dB] -30 -40 -50 -60 -70 -80 10 100 1k 10k Frequency [Hz] Fig. 6 THD+N vs . Frequency 100k VDD=1.5V, Po=5m W, SE m ode, BW