Headphone Amplifiers Coupling Capacitorless Headphone Amplifiers BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL No.11102EAT05 ●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. And, the function “Virtual ground” is embedded. Noise between IC and Headphone jack can be canceled by using “Virtual ground” function. ●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) Virtual Ground-Referenced Outputs 5) Gain setting BD88200GUL: Variable gain with external resistors BD88210GUL: -1.0V/V BD88215GUL: -1.5V/V BD88220GUL: -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 Type Supply Supply Voltage Current [V] [mA] BD88215GUL Maximum Output Power [mW] THD+N [%] 80 0.006 Noise Voltage [µVrms] PSRR [dB] Package Variable gain with external resister BD88200GUL BD88210GUL Gain [V/V] 2.4～5.5 (No2.0 signal) BD88220GUL www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. -1.0 -1.5 (VDD=3.3V,RL=16Ω (VDD=3.3V,RL=16Ω THD+N≦1%,f=1kHz) Po=10mW,f=1kHz) 10 -80 (f=217Hz) VCSP50L2 (2.1mm x 2.1mm) -2.0 1/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Absolute maximum ratings Parameter Symbol Ratings Unit SGND to PGND voltage VGG 0.0 V SVDD to PVDD voltage VDD -0.3～0.3 V SVSS to PVSS voltage VSS 0.0 V SGND or PGND to SVDD, PVDD voltage VDG -0.3～6.0 V SVSS, PVSS to SGND or PGND voltage VSG -3.5～0.3 V SGND to IN_- voltage VIN (SVSS-0.3)～2.8 V SGND to OUT_- voltage VOUT (SVSS-0.3)～2.8 V PGND to C1P- voltage VC1P (PGND-0.3)～(PVDD+0.3) V PGND to C1N- voltage VC1N (PVSS-0.3)～(PGND+0.3) V SGND to SHDN_B- voltage VSH (SGND-0.3)～(SVDD+0.3) V Input current IIN -10～10 mA Power Dissipation PD 1350 * mW TSTG -55～150 ℃ Storage Temperature Range * 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 Parameter Supply Voltage Range Operating Temperature Range www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Ratings Symbol Unit Min. Typ. Max. VSVDD,VPVDD 2.4 - 5.5 V TOPR -40 - +85 ℃ 2/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristics Unless otherwise specified, Ta=25℃, SVDD=PVDD=3.3V, SGND=PGND=0V, SHDNB=SVDD, C1=C2=2.2µF, RL=No Load, Ri=Rf=10kΩ Limits Parameter Symbol Unit Conditions Min. Typ. Max. Supply Current Shutdown Supply Current IST - 0.1 2 µA IDD1 - 1.3 - mA IDD2 - 2.0 7.4 mA H Level Input Voltage VIH 1.95 - - V L Level Input Voltage VIL - - 0.70 V ILEAK - - ±1 µA Shutdown to Full Operation tSON - 80 - µs Offset Voltage VIS - ±0.5 ±5.0 mV 30 60 - mW 40 80 - mW - 0.008 0.056 % - 0.006 0.100 % 10 14 19 kΩ - -1.00 - -1.05 -1.00 -0.95 Quiescent Supply Current SHDNLB=SHDNRB=L (SHDNLB,SHDNRB)=(H,L) or (L,H), No signal SHDNLB=SHDNRB=H, No signal SHDN_B Terminal Input Leak Current Headphone Amplifier Maximum Output Power Total Harmonic Distortion + Noise POUT THD+N Input Impedance ZIN BD88200GUL BD88210GUL Gain AV V/V BD88215GUL -1.55 -1.50 -1.45 BD88220GUL -2.06 -2.00 -1.94 ΔAV - 1 - % Noise VN - 10 - µVrms Slew Rate SR - 0.15 - V/µs Maximum Capacitive Load CL - 200 - pF Crosstalk CT - -90 - dB PSRR - -80 - dB Charge-Pump Oscillator Frequency fOSC 200 300 430 kHz Thermal-Shutdown Threshold TSD - 145 - ℃ Thermal-Shutdown Hysteresis THYS - 5 - ℃ Gain match Power Supply Rejection Ratio www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 3/25 SHDNLB=SHDNRB=L→H RL=32Ω, THD+N≦-40dB, f=1kHz, 20kHz LPF, for Single Channel RL=16Ω, THD+N≦-40dB, f=1kHz, 20kHz LPF, for Single Channel RL=32Ω, POUT=10mW, f=1kHz, 20kHz LPF RL=16Ω, POUT=10mW, f=1kHz, 20kHz LPF SHDNLB=SHDNRB=H In BD88200GUL, ZIN = Ri In BD88200GUL, Gain is variable by the external resister of Ri and Rf. 20kHz LPF + JIS-A RL=32Ω, f=1kHz, VOUT=200mVP-P, 1kHz BPF f=217Hz, 100mVP-P‐ripple, 217Hz BPF 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – General Items (Reference data) Unless otherwise specified, Ta=25℃, SGND=PGND=0V, SHDNLB=SHDNRB=SVDD, C1=C2=2.2µF, Input coupling capacitor=1µF, RL=No Load * In BD88200GUL the input resister(Ri)=10kΩ, feedback resister(Rf)=10kΩ. 4.0 1u 4.0 100n 10n 1n 0.1n 0.0 3.0 * This caracteristics has hysteresis (40mV typ) by UVLO. 2.0 1.0 0.0 1.0 2.0 3.0 4.0 5.0 1.0 2.0 3.0 * This caracteristics has hysteresis (40mV typ) by UVLO. 2.0 1.0 3.0 4.0 5.0 6.0 0.0 1.0 Supply Voltage [V] Supply Voltage [V] 120 160 Setup time [us] -1 -1.5 -2 140 Maximum Output Power [mW] SHDNLB=SHDNRB =L->H VSS 90% Setup time No Load 180 120 100 80 60 40 -2.5 3.0 2.5 3.0 3.5 4.0 4.5 5.0 5.5 2.0 6.0 2.5 3.0 3.5 100 80 60 RL=32Ω, in phase 40 RL=32Ω, out of phase THD+N≦-40dB 20kHz LPF Stereo 20 2.0 6.0 -20 -20 -20 -60 -40 -50 -60 -40 -50 -60 -70 -70 -70 -80 -80 -80 -90 -90 -90 -100 -100 -100 10 100 1k 10k 10 100k 100 1k 10k 100k 10 -20 -30 PSRR [dB] -30 -40 -50 -60 -20 -30 -40 -50 -60 -40 -50 -60 -70 -70 -80 -80 -80 -90 -90 -90 -100 -100 -100 100 1k 10k 100k Frequency [Hz] Fig.10 Crosstalk vs. Frequency (VDD=2.4V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10 100 1k 10k Frequency [Hz] Fig.11 Crosstalk vs. Frequency (VDD=3.3V) 4/25 VDD=5.5V VOUT = 200mVp-p RL=32Ω BPF -10 -70 10 100k 0 VDD=3.3V VOUT = 200mVp-p RL=32Ω BPF -10 PSRR [dB] -20 10k Frequency [Hz] 0 VDD=2.4V VOUT = 200mVp-p RL=32Ω BPF 1k Fig.9 PSRR vs. Frequency (VDD=5.5V) Fig.8 PSRR vs. Frequency (VDD=3.3V) 0 -10 100 Frequency [Hz] Frequency [Hz] Fig.7 PSRR vs. Frequency (VDD=2.4V) 6.0 -30 PSRR [dB] PSRR [dB] -50 5.0 5.5 VDD=5.5V Ripple = 100mVp-p BPF -10 -30 -40 4.0 4.5 0 VDD=3.3V Ripple = 100mVp-p BPF -10 -30 3.0 3.5 Supply Voltage [V] 0 VDD=2.4V Ripple = 100mVp-p BPF 2.5 Fig.6 Maximum power vs. Supply Voltage Fig.5 Setup time vs. Supply Voltage 0 -10 PSRR [dB] 5.0 5.5 Supply Voltage [V] Supply Voltage [V] Fig.4 Negative Voltage vs. Supply Voltage PSRR [dB] 4.0 4.5 6.0 RL=16Ω, in phase 0 0 2.0 5.0 RL=16Ω, out of phase 20 -3 4.0 Fig.3 Stereo Operating Current vs. Supply voltage 200 SHDNLB=VDD SHDNRB=VDD No Load 2.0 Supply Voltage [V] Fig.2 Monaural Operating Current vs. Supply Voltage 0 -0.5 SHDNLB=VDD SHDNRB=VDD 0.0 0.0 6.0 Fig.1 Standby Current vs. Supply Voltage VSS Voltage [V] Operating Current [mA] SHDNLB=VDD SHDNRB=0V Operating Current [mA] Standby Current [A] SHDNLB=0V SHDNRB=0V 100k 10 100 1k 10k 100k Frequency [Hz] Fig.12 Crosstalk vs. Frequency (VDD=5.5V) 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – BD88215GUL (Reference data) -20 Output Voltage [dBV] -40 RL=16Ω -60 -80 -40 RL=16Ω -60 -80 -120 -120 -100 -80 -60 -40 -20 -120 -120 0 10 8 8 RL=16Ω 6 -100 -80 -60 -80 -40 -20 -120 -120 0 VDD=2.4V Po=10mW RL=16Ω Input coupling capacitor = 1.0uF -4 -6 -8 100 RL=32Ω -2 VDD=3.3V Po=10mW RL=16Ω Input coupling capacitor = 1.0uF -4 -6 -8 1k 10k 2 10 100 -6 -8 10k 100k 10 10 0.01 0.001 1n 100n In phase 0.1 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=16 Ω 0.01 Out of phase 0.001 10u 1m 1n 100m THD+N [%] 10 THD+N [%] 10 1 100n 1 0.1 Out of phase 0.001 1m 1n 100m 10 10 10 THD+N [%] 100 0.1 VDD=2.4V 20kHz-LPF f=1kHz Stereo RL=32Ω 0.01 0.001 1n 100n 1 In phase 0.1 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=32 Ω 0.01 Out of phase 0.001 10u 1m 100m Output Power [W] Fig.22 THD+N vs. Output Power (VDD=2.4V, RL=32Ω) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 1n 100n 1 0.1 VDD=5.5V 20kHz-LPF f=1kHz Stereo RL=32 Ω Out of phase 0.001 1m 100m Output Power [W] Fig.23 THD+N vs. Output Power (VDD=3.3V, RL=32Ω) 5/25 1m 100m In phase 0.01 10u 10u Fig.21 THD+N vs. Output Power (VDD=5.5V, RL=16Ω) 100 In phase 100n Out of phase Output Power [W] Fig.20 THD+N vs. Output Power (VDD=3.3V, RL=16Ω) 100 1 VDD=5.5V 20kHz-LPF f=1kHz Stereo RL=16 Ω Output Power [W] Output Power [W] Fig.19 THD+N vs. Output Power (VDD=2.4V, RL=16Ω) 100k In phase 0.01 10u 10k Frequency [Hz] 100 In phase 1k Fig.18 Gain vs. Frequency (VDD=5.5V) 100 VDD=2.4V 20kHz-LPF f=1kHz Stereo RL=16Ω 100 Frequency [Hz] Fig.17 Gain vs. Frequency (VDD=3.3V) 100 0.1 VDD=5.5V Po=10mW RL=16Ω Input coupling capacitor = 1.0uF -4 1k Frequency [Hz] 1 RL=32Ω 0 -2 -10 100k Fig.16 Gain vs. Frequency (VDD=2.4V) 0 RL=16Ω 6 -10 10 -20 4 0 -10 -40 8 RL=16Ω Gain [dB] -2 -60 Fig.15 Output Voltage vs. Input Voltage (VDD=5.5V) 2 Gain [dB] RL=32Ω 0 -80 Input Voltage [dBV] 4 2 -100 10 6 4 Gain [dB] RL=16Ω -60 Fig.14 Output Voltage vs. Input Voltage (VDD=3.3V) Fig.13 Output Voltage vs. Input Voltage (VDD=2.4V) THD+N [%] -40 Input Voltage [dBV] 10 RL=32Ω -100 Input Voltage [dBV] THD+N [%] -20 -100 -100 VDD=5.5V f=1kHz BPF 0 RL=32Ω THD+N [%] Output Voltage [dBV] -20 VDD=3.3V f=1kHz BPF 0 RL=32Ω Output Voltage [dBV] VDD=2.4V f=1kHz BPF 0 1n 100n Out of phase 10u 1m 100m Output Power [W] Fig.24 THD+N vs. Output Power (VDD=5.5V, RL=32Ω) 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – BD88215GUL (Reference data) – Continued 100 VDD=2.4V RL=16 Ω 20kHz-LPF Stereo (in phase) 1 10 THD+N [%] Po=0.1mW Po=1mW 0.1 1 Po=0.1mW Po=1mW 0.1 0.01 0.01 Po=10mW 0.001 10 100 1k Po=10mW 10 100k 100 Frequency [Hz] Po=0.1mW Po=10mW Po=1mW 10 100 1k Po=0.1mW Po=10mW 0.1 Po=1mW 100 1k 10k 1 Spectrum [dBV] -80 10 -40 -60 -80 -40 -60 -80 -120 -120 -140 -140 Frequency [Hz] Fig.31 Noise Spectrum (VDD=2.4V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 100k VDD=5.5V Input connect to the ground with 1uF -20 -100 100k 10k 0 VDD=3.3V Input connect to the ground with 1uF -120 10k 1k Frequency [Hz] -100 1k 100 Fig. 30 THD+N vs. Frequency (VDD=5.5V, RL=32Ω) -100 100 Po=1mW 0.001 Fig. 29 THD+N vs. Frequency (VDD=3.3V, RL=32Ω) -20 -60 10 Po=0.1mW Po=10mW 0.1 100k 0 VDD=2.4V Input connect to the ground with 1uF -40 VDD=5.5V RL=32Ω 20kHz-LPF Stereo (in phase) Frequency [Hz] Frequency [Hz] 0 100k 0.01 10 100k 10k Fig. 27 THD+N vs. Frequency (VDD=5.5V, RL=16Ω) 10 0.001 10k 1k 100 1 Fig. 28 THD+N vs. Frequency (VDD=2.4V, RL=32Ω) -20 100 Frequency [Hz] 0.01 0.001 Po=10mW 10 100k THD+N [%] THD+N [%] THD+N [%] 10k VDD=3.3V RL=32Ω 20kHz-LPF Stereo (in phase) 10 0.01 Spectrum [dBV] 1k 100 VDD=2.4V RL=32 Ω 20kHz-LPF Stereo (in phase) 0.1 0.1 0.001 Fig. 26 THD+N vs. Frequency (VDD=3.3V, RL=16Ω) 100 1 Po=0.1mW Po=1mW Frequency [Hz] Fig.25 THD+N vs. Frequency (VDD=2.4V, RL=16Ω) 10 1 0.01 0.001 10k VDD=5.5V RL=16Ω 20kHz-LPF Stereo (in phase) 10 Spectrum [dBV] THD+N [%] 10 100 VDD=3.3V RL=16Ω 20kHz-LPF Stereo (in phase) THD+N [%] 100 -140 10 100 1k 10k Frequency [Hz] Fig.32 Noise Spectrum (VDD=3.3V) 6/25 100k 10 100 1k 10k 100k Frequency [Hz] Fig.33 Noise Spectrum (VDD=5.5V) 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – BD88200GUL (Reference data) VDD=3.3V, Po=10mW Ri=10kΩ, Input coupling capacitor = 1.0uF 8 6 4 -40 RL=16Ω -60 -80 RL=16Ω 2 0 -2 RL=32Ω -4 In phase 1 0.1 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=16Ω 0.01 -6 -100 -8 -120 -120 0.001 -10 -100 -80 -60 -40 -20 10 0 100 Input Voltage [dBV] 1k 10k 1n 100k VDD=3.3V RL=16Ω 20kHz-LPF Stereo (in phase) 0.1 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=32Ω 0.01 0.001 THD+N [%] In phase 1 Po=0.1mW Po=1mW 0.1 100n 10u 1m 100m Output Power [W] Po=10mW 10 100 1k 10k Frequency [Hz] Fig. 37 THD+N vs. Output Power (VDD=3.3V, RL=32Ω) 1 Po=1mW 0.1 Po=0.1mW 0.01 0.01 Out of phase 0.001 1n 100m VDD=3.3V RL=32Ω 20kHz-LPF Stereo (in phase) 10 THD+N [%] 10 1 1m 100 100 10 10u Fig.36 THD+N vs. Output Power (VDD=3.3V, RL=16Ω) Fig.35 Gain vs. Frequency (VDD=3.3V) 100 100n Out of phase Output Power [W] Frequency [Hz] Fig.34 Output Voltage vs. Input Voltage (VDD=3.3V) THD+N [%] 10 THD+N [%] RL=32Ω Gain [dB] Output Voltage [dBV] -20 100 10 VDD=3.3V f=1kHz BPF 0 Fig.38 THD+N vs. Frequency (VDD=3.3V, RL=16Ω) Po=10mW 0.001 100k 10 100 1k 10k 100k Frequency [Hz] Fig. 39 THD+N vs. Frequency (VDD=3.3V, RL=32Ω) 0 VDD=3.3V Input connect to the ground with 1uF Spectrum [dBV] -20 -40 -60 -80 -100 -120 -140 10 100 1k 10k 100k Frequency [Hz] Fig.40 Noise Spectrum (VDD=3.3V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 7/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – BD88210GUL (Reference data) 100 10 VDD=3.3V Po=10mW Input coupling capacitor = 1.0uF 8 6 4 -40 Gain [dB] RL=16Ω -60 -80 2 -2 RL=32Ω VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=16Ω 0.01 0.001 -10 -100 -80 -60 -40 -20 10 0 100 1k 10k 1n 100k VDD=3.3V RL=16Ω 20kHz-LPF Stereo (in phase) 10 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=32Ω 1n THD+N [%] In phase 1 1 Po=0.1mW Po=1mW 0.1 Po=10mW 0.001 1m 100m Output Power [W] Po=1mW 0.1 Po=0.1mW 10 100 1k 10k Po=10mW 0.001 100k Frequency [Hz] Fig.45 THD+N vs. Frequency (VDD=3.3V, RL=16Ω) Fig. 44 THD+N vs. Output Power (VDD=3.3V, RL=32Ω) 1 0.01 Out of phase 10u 100m VDD=3.3V RL=32Ω 20kHz-LPF Stereo (in phase) 10 0.01 100n 1m 100 100 10 10u Fig.43 THD+N vs. Output Power (VDD=3.3V, RL=16Ω) Fig.42 Gain vs. Frequency (VDD=3.3V) 100 100n Out of phase Output Power [W] Frequency [Hz] Input Voltage [dBV] THD+N [%] 0.1 -8 Fig.41 Output Voltage vs. Input Voltage (VDD=3.3V) 0.001 In phase 1 -6 -120 -120 0.01 RL=16Ω 0 -4 -100 0.1 10 THD+N [%] Output Voltage [dBV] -20 RL=32Ω THD+N [%] VDD=3.3V f=1kHz BPF 0 10 100 1k 10k 100k Frequency [Hz] Fig. 46 THD+N vs. Frequency (VDD=3.3V, RL=32Ω) 0 VDD=3.3V Input connect to the ground with 1uF Spectrum [dBV] -20 -40 -60 -80 -100 -120 -140 10 100 1k 10k 100k Frequency [Hz] Fig.47 Noise Spectrum (VDD=3.3V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 8/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Electrical characteristic curves – BD88220GUL (Reference data) 10 VDD=3.3V f=1kHz BPF 100 RL=16Ω 8 6 10 4 -40 RL=16Ω -60 -80 RL=32Ω 2 0 -2 VDD=3.3V Po=10mW Input coupling capacitor = 1.0uF -4 -6 -100 -8 -120 -120 -100 -80 -60 -40 -20 100 1k 10k 100k 1n 0.01 0.001 1n 100n 1 Po=0.1mW Po=1mW 0.1 0.01 Out of phase 10u 1m 100m 1 Po=1mW 0.1 Po=0.1mW 0.01 Po=10mW 0.001 10 100 1k 10k Po=10mW 0.001 100k Frequency [Hz] Output Power [W] Fig. 51 THD+N vs. Output Power (VDD=3.3V, RL=32Ω) 100m VDD=3.3V RL=32Ω 20kHz-LPF Stereo (in phase) 10 THD+N [%] THD+N [%] VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=32Ω 1m 100 VDD=3.3V RL=16Ω 20kHz-LPF Stereo (in phase) 10 In phase 10u Fig.50 THD+N vs. Output Power (VDD=3.3V, RL=16Ω) 100 10 100n Out of phase Output Power [W] Fig.49 Gain vs. Frequency (VDD=3.3V) 100 0.1 VDD=3.3V 20kHz-LPF f=1kHz Stereo RL=16Ω Frequency [Hz] Input Voltage [dBV] 1 0.1 0.001 10 0 In phase 1 0.01 -10 Fig.48 Output Voltage vs. Input Voltage (VDD=3.3V) THD+N [%] THD+N [%] -20 RL=32Ω Gain [dB] Output Voltage [dBV] 0 Fig.52 THD+N vs. Frequency (VDD=3.3V, RL=16Ω) 10 100 1k 10k 100k Frequency [Hz] Fig. 53 THD+N vs. Frequency (VDD=3.3V, RL=32Ω) 0 VDD=3.3V Input connect to the ground with 1uF Spectrum [dBV] -20 -40 -60 -80 -100 -120 -140 10 100 1k 10k 100k Frequency [Hz] Fig.54 Noise Spectrum (VDD=3.3V) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 9/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Pin Arrangement D ●Pin Function Ball Matrix A1 1 2 3 4 SVDD OUTL SVSS PVSS C INL OUTR C1N B SHDNRB SHDNLB PGND A INR SGND PVDD (Bottom View) Pin name C1P Function Symbol INR Headphone Amplifier (Rch) input C A2 SGND Ground for Headphone Amplifier - A3 PVDD Positive Power Supply for Charge Pump - A4 C1P Flying Capacitor (CF) Positive A B1 SHDNRB Headphone Amplifier (Rch) Shutdown Control (H:active, L:shutdown) E B2 SHDNLB Headphone Amplifier (Lch) Shutdown Control (H:active, L:shutdown) E B4 PGND Ground for Charge Pump - C1 INL C2 OUTR Headphone Amplifier (Lch) input C Headphone Amplifier (Rch) output D C4 C1N Flying Capacitor (CF) Negative B D1 SVDD Ground for Headphone Amplifier - D2 OUTL Headphone Amplifier (Lch) output D D3 SVSS Negative Supply Voltage for Signal - D4 PVSS Negative Supply Voltage output F ●Pin equivalent circuit PGND PGND PVDD PVDD SVDD B PGND PGND PAD + A - PAD PAD C PVSS PVSS SVDD SVSS SVDD PGND PGND PAD PAD PAD + D SVSS E SGND F Fig.55 Pin equivalent circuit www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 10/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL INL SHDNB ●Block Diagram B1 C1 SVDD SVDD Rin D1 Rfb PVDD A3 SVDD OUTL 1.0μF D2 R2=Rin C1P + A4 SGND SVSS SVDD R1=Rfb PGND B4 SVDD CHARGE PUMP UVLO/ SHUTDOWN CONTROL SHORT PROTECTION TSD COM C1N B2 R1=Rfb C4 PVSS SVDD PVDD SGND CHARGE PUMP CONTROL SVSS OUTR + CLOCK GENERATOR R2=Rin C2 - D4 SVDD Rin R fb SVSS SVSS SGND A1 INR SGND A2 D3 Type Rin Rfb BD88200GUL 14kΩ@Typ. Open BD88210GUL 14kΩ@Typ. 14kΩ@Typ. BD88215GUL 14kΩ@Typ. 21kΩ@Typ. BD88220GUL 14kΩ@Typ. 28kΩ@Typ. Fig.56 Block Diagram www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 11/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Functional descriptions The conventional headphone amplifier composition is occupied to Fig.57. In this composition, the signal is output by using the middle point bias circuit based on the middle point bias. Therefore, the output coupling capacitor that removes the DC voltage difference and does the AC coupling is necessary. This coupling capacitor and the impedance of the headphone composes the high-pass filter. Therefore, the signal degradation in the low frequency region learns by experience. The output coupling capacitor should be a large capacity, because the cutoff frequency of this high-pass filter becomes the following formula (1). 1 fc (1) 2πRLCC * Cc is the coupling capacitor, and RL is the impedance of the headphone. Moreover, POP noise by the middle point bias start-up is generated and the degradation of PSRR learns by experience. VDD Cc + Vhp VDD Vout [V] + Vout Input VDD/2 0 time [s] Vhp [V] GND Middle Point Bias Circuit 0 time [s] Fig.57 Conventional headphone amplifier composition The composition of the series of BD882xxGUL is occupied to Fig.58. In this composition, the signal is output by using a negative voltage based on the ground level. Therefore, the amplifier output can be connected directly with the headphone. And, the output coupling capacitor becomes unnecessary. Additionally, the signal degradation in the low frequency region with the coupling capacitor is not generated, and the deep bass is achieved. Moreover, POP noise is controlled because of no middle point bias start-up. And, the degradation of PSRR doesn't occur by being based on the ground. Vout Input + CF : Flying Capacitor VDD Vout [V] HPVDD Vhp HPVDD 0 time [s] Charge Pump Vhp [V] VSS CH : Hold Capacitor 0 time [s] Fig.58 Composition of the series of BD882xxGUL www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 12/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL BD882□□GUL has the function “Virtual Ground-reference output“. “Virtual Ground-reference output” can be canceled Noise (see Fig.59 “Vn”) between IC and headphone jack by feedback ground of headphone jack to IC. Vout Vo + Vout Vn=Vg Voltage[V] VDD Voltage[V] Input 0 Vo 0 time[s] time[s] Vn Charge Pump GND Vg (Ground-bias type) Vout Vo + Vout Vn=Vg Voltage[V] VDD Voltage[V] Input Vo 0 0 time[s] time[s] Vn Charge Pump GND Vg (Virtual ground-bias type) Fig.59. Ground noise canceling function by “virtual ground” Connect Pin “B2” (COM) to ground near headphone jack. In case of BD88200GUL, value error of external resistors makes noise rejection characteristic worse. Put “External resistors” that have high accuracy within 5%, near the LSI. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 13/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL [CHARGE PUMP / CHARGE PUMP CONTROL] The negative power supply circuit is composed of the regulated charge-pump. This circuit outputs the regulated negative voltage (PVSS) directly from power-supply voltage (PVDD). Therefore, it doesn't depend on the power-supply voltage, and a constant voltage is output (PVSS=-2.4V@Typ., refer to Fig.4). Moreover, there is not swinging of the power supply by the output current of the headphone amplifier, and it doesn't influence the headphone amplifier characteristic. 0 Ta=25℃ VDD=3.3V SHDN_B=SVDD CF=CH=2.2uF VSS Voltage [V] -0.5 -1 -1.5 -2 -2.5 -3 0 20 40 60 80 Load Current [mA] Fig.60 Characteristics of load current regulation of PVSS (Reference data) ・Power control The power control is a logical sum of SHDNLB and SHDNRB. The negative power supply circuit starts when H level is input to either of SHDNLB or SHDNRB, and power is downed at the SHDNLB=SHDNRB=L level. Table.1 Control of the charge pump SHDNLB SHDNRB Control L L Power down L H Power on H L Power on H H Power on ・Operating Frequency The operating frequency of the negative power supply charge pump is designed for the temperature and the voltage dependence may decrease. The reference data (measurements) is occupied to Fig.61. Please note the interference with the frequency in the application board. 400 380 360 VDD=3.3V Measure : C1P CF=CH=2.2uF Charge Pump Ocsillator Frequency [kHz] Charge Pump Ocsillator Frequency [kHz] 400 340 320 300 280 260 240 220 200 -50.0 0.0 50.0 380 360 340 320 300 280 260 240 220 200 2.0 100.0 Ta=25℃ Measure : C1P CF=CH=2.2uF 3.0 4.0 5.0 6.0 Supply Voltage[V] Ta [℃] Fig.61 Temperature characteristic and Voltage characteristic of operating frequency (Reference data) ・The flying capacitor and the hold capacitor The flying capacitor (CF) and the hold capacitor (CH) greatly influence the characteristic of the charge pump. Therefore, please connect the capacitor with an excellent temperature characteristic and voltage characteristic of 2.2µF as much as possible near IC. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 14/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL [HEADPHONE AMP] The headphone amplifier is driven by the internal positive voltage (+2.4V) and negative voltage (SVSS, -2.4V) based on ground (SGND). Therefore, the headphone can be connected without the output coupling capacitor. As a result, it brings the improved low-frequency characteristic compared with the headphone of the conventional coupling capacitor type. ・Power control L channel and R channel of the headphone amplifier can be independently controlled by SHDNLB and SHDNRB logic. When the SVSS voltage is -1.1V@Typ. or more, the headphone amplifier does not operate to protect from illegal operation. And in addition, the overcurrent protection circuit is built in. The amplifier is shutdown when the overcurrent occurs because of the output short-circuit etc., and IC is protected from being destroyed. Table.2 Control of the headphone amplifier SHDNLB SHDNRB L channel L L Power down R channel Power down L H Power down Power on H L Power on Power down H H Power on Power on [V] SHDNxB VDD 0 [time] [V] 0 [time] -1.1V SVSS Amprilier Disable Amplifier Enable Fig.62 Area of headphone amplifier can operate SVSS does not have internal connection with PVSS. Please connect SVSS with PVSS on the application board. ・Input coupling capacitor Input DC level of BD882xxGUL is 0V (SGND). The input coupling capacitor is necessary for the connection with the signal source device. The signal decrease happens in the low frequency because of composing the high-pass filter by this input coupling capacitor and the input impedance of BD882xxGUL. The input impedance of BD882xxGUL is Rin (14kΩ@Typ.). The cutoff frequency of this high-pass filter becomes the following formula. (In BD88200GUL, Rin becomes external resistance Ri. ) 1 fc (2) 2πR in C in * Cin is the input coupling capacitor. 9.0 Rin=14kΩ 6.0 3.0 Cin=10uF Gain [dB] 0.0 -3.0 -6.0 Cin=4.7uF -9.0 -12.0 Cin=2.2uF -15.0 Cin=1uF -18.0 -21.0 1 10 100 Frequency [Hz] Fig.63 Frequency response by the input coupling capacitor (Reference data) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 15/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL And, the degradation of THD+N happens because of the input coupling capacitor. Therefore, please consider these about the selection of parts. 0 BD88215GUL VDD=3.3V Po=10mW RL=16Ω 20kHz LPF -10 -20 THD+N [dB] -30 Cin=1.0µF -40 Cin=0.47µF -50 -60 Cin=0.22µF -70 -80 -90 Cin=2.2µF -100 10 100 1k 10k 100k Frequency [Hz] * Capacitor size: 1608 Fig.64 THD+N by the input coupling capacitor (Reference data) Audio Source Vin Vs Rin =7.1kΩ Cin Vs [V] ・State of terminal when power down The state of the terminal changes by the power control of the headphone amplifier. When it is shutdown, the input impedance of the input terminal becomes 7.1kΩ@Typ. (In BD88200GUL, become Ri + 7.1kΩ). The time constant can be reduced when the input coupling capacitor is charged. The input voltage changes while charging up the input coupling capacitor. Therefore, do not operate the headphone amplifier while charging. Vout VDD Output Bias 0 time [s] Vin [V] + Output Bias VSS 0 time [s] Fig.65 Input voltage transition with input coupling capacitor This charge time constant becomes the following formula (3) by using the input coupling capacitor and the input impedance. And the calculation value of the convergence to the wait time is indicated in Fig.66. τ R in C in (3) Convergence [%] * Rin=7.1kΩ@Typ.. In BD88200GUL, Rin=Ri+7.1kΩ 100 90 80 70 60 50 40 30 20 10 0 0τ 1τ 2τ 3τ 4τ 5τ Wait time [s] 6τ 7τ 8τ Fig.66 Wait time and convergence (Reference) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 16/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL [UVLO / SHUTDOWN CONTROL] BD882xxGUL has low voltage protection function (UVLO: Under Voltage Lock Out). And protect from the illegal operation of IC by a low power supply voltage. The detection voltage is 2.13V@Typ., so it does not influence 2.4V of recommended operation voltage. UVLO controls the whole of IC, and does both the negative power supply charge pump and the headphone amplifier in power down. [TSD] BD882xxGUL has overheating protection function (TSD: Thermal Shutdown). And the headphone amplifier becomes shutdown when illegally overheating by the headphone amplifier illegally operation. ●Timming Chart (Usually Operation) PVDD,SVDD SHDNLB SHDNRB Amp enable PVSS,SVSS INL,INR OUTL OUTR Shutdown Setup Signal output Shutdown Fig.67 Usually Operation (UVLO Operation) PVDD,SVDD SHDNLB, SHDNRB PVSS,SVSS OUTL OUTR Signal output UVLO Setup Signal output Fig.68 UVLO Operation (TSD Operation) Hysteresis = 5℃ Ta PVDD,SVDD SHDNLB, SHDNRB PVSS,SVSS OUTL OUTR Signal output TSD Signal output Fig.69 TSD Operation www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 17/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Application Circuit Lch Input INL SHDNB SHUTDOWN Control B1 1.0μF 3.3V C1 SVDD SVDD D1 3.3V Rin Rfb 1.0μF PVDD A3 SVDD OUTL 1.0μF + A4 SGND SVDD CF SVSS R1=Rfb PGND CH SVDD C1 B4 2.2μF Part D2 R2=Rin C1P CHA RGE PUMP UVLO/ SHUTDOWN CONTROL SHORT PROTECTION TSD C2 Cpvdd COM 2.2μF C1N C4 PVSS B2 R1=Rfb PVDD SVDD SGND CHARGE PUMP CONTROL Cil OUTR + CLOCK GENERATOR Csvdd SVSS R2=Rin C2 - Cir D4 SVDD Rin Function Flying Capacitor Hold Capacitor Bypass Capacitor Bypass Capacitor Coupling Capacitor Coupling Capacitor value 2.2µF 2.2µF 1.0µF 1.0µF 1.0µF 1.0µF Remarks Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Rfb SVSS SVSS SGND A1 INR SGND A2 D3 1.0μF Rch Input Fig.70 BD88210GU/BD88215GUL/BD88220GUL application circuit Part CF CH Cpvdd Csvdd Cil Cir Ri Rf Function Flying Capacitor Hold Capacitor Bypass Capacitor Bypass Capacitor Coupling Capacitor Coupling Capacitor Input Resistor Feedback Resistor value 2.2µF 2.2µF 1.0µF 1.0µF 1.0µF 1.0µF 10kΩ 10kΩ Remarks Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B Temp. Characteristic： Class-B MCR006YZPJ103 (ROHM) MCR006YZPJ103 (ROHM) Fig.71 BD88200GUL application circuit In BD88200GUL, the Pass Gain becomes the following formula (4). The Pass Gain and the resister Rf is limited by table.3. R Gain f (4) Ri Table.3 Pass Gain and Resister Limit Item Min. Typ. Max. Unit Pass Gain 0.5 1.0 2.0 V/V Rf 1.0 10 - kΩ Ri - 10 - kΩ Ri is not limited. But, if this resister Ri is very small, the signal decrease happens in the low frequency (Refer to formula 2). www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 18/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Thermal Derating Curve The reference value of the thermal derating curve is indicated in Fig.72. (Conditions) This value is for mounted on the ROHM application board Board size：40mm x 60mm x 1.6mm Top Copper Area：79.9% Bottom Copper Area：80.2% Board Layout：Fig.75 1.6 1.4 Pd [W] 1.2 1 0.8 0.6 0.4 0.2 0 0 25 50 75 100 125 150 Ta [℃] Fig.72 Thermal Derating Curve www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 19/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Evaluation Board BD882XXFV Evaluation Board loads with the necessary parts. It can operate only by it. It is using RCA Connector for input terminal and Headphone jack (φ=3.5mm) for output terminal. Therefore it can easily connect between Audio equipments. And it can operate by single supply (2.4 to 5.5V). The switch on the board (SDB) can control shutdown. (Spec.) Item Limit Unit 3.0 to 5.5 V 1.0 A Operating Temperature Range -40 to 85 ℃ Input Voltage Range -2.5 to 2.5 V Output Voltage Range -2.5 to 2.5 V 15 Ω Supply Voltage Range (VDD) Maximum Supply Current Minimum Load Impedance (Schematic) OUTL OUTR R6 R CN1 R5 L Headphone Jack D2 C1 IN<L> IN<L> C6 1µF RCA(White) VDD A3 3.3V + D1 C7 10u F C2 1µF GND C5 1µF B4 A2 GND OUTL OUTR INL INR C2 A1 BD88210GUL / BD88215GUL A4 / BD88220GULC1P PVDD C1N SVDD PGND PVSS SVSS SGND C4 IN<R> IN<R> C4 1µF RCA(Red) C1 2.2µF D4 D3 C3 2.2µF GND VDD VSS VDD SHDNLB (Open) B2 SHDNLB SW2 SHDNRB B1 SHDNR B (Open) SW1 GND GND Fig.73 Evaluation Board Schematic (BD88210GUL/BD88215GUL/BD88220GUL) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 20/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL OUTL OUTR R6 R CN1 R5 L Headphone Jack D2 R4 10k Ω IN<L> IN<L> C1 R3 C6 1µF 10kΩ RCA(White) A3 3.3V D1 C7 10u F C2 1µF GND OUTR INL INR BD88200GUL VDD + OUTL C5 1µF B4 A2 GND C2 A1 IN<R> R1 C4 10kΩ 1µF C1P A4 PVDD C1N SVDD R2 10k Ω PGND PVSS SGND SVSS SHDNL COM C4 IN<R> RCA(Red) C1 2.2µF D4 D3 C3 2.2µF GND VSS VDD SHDNB B1 (Open) B2 SW1 R7 10kΩ COM R8 10kΩ GND Fig.74 Evaluation Board Schematic (BD88200GUL) (Parts List) Parts name Type Value Size U1 CSP-14pin BD882xxGUL 2.1mm x 2.1mm C1, C3 Chip Ceramic capacitor 2.2µF 1608 C2, C4～C6 Chip Ceramic capacitor 1.0µF 1608 C7 Tantalum capacitor 10µF 3216 R1～R4 Chip Resistor 10kΩ 1608 R5, R6 Chip Resistor Open - CN1 Headphone jack - φ=3.5mm R1～R4 * Chip Resistor 10kΩ 1608 *About BD88200GUL, R1～R4 of is the resistor for the gain setting. (Operation procedure) ① ② ③ ④ ⑤ ⑥ Turn off the switch (SHNDLB/SHDNRB) on evaluation board. Connect the positive terminal of the power supply to the VDD pin and ground terminal to the GND pin. Connect the left output of the audio source to the INL and connect the right output to the INR. Turn on the power supply. Turn on the switch (SHDNLB/SHDNRB) on the evaluation board. (H) Input the audio source. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 21/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL (Board Layout) (TOP SILKSCREEN – TOP VIEW) (TOP LAYER - TOP VIEW) (BOTTOM LAYER – TOP VIEW) (BOTTOM SILKSCREEN – TOP VIEW) Fig.75 ROHM Application Board Layout (BD88210GUL/BD88215GUL/BD88220GUL) (TOP SILKSCREEN – TOP VIEW) (TOP LAYER - TOP VIEW) (BOTTOM LAYER – TOP VIEW) (BOTTOM SILKSCREEN – TOP VIEW) Fig.76 ROHM Application Board Layout (BD88200GUL) www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 22/25 2011.03 – Rev. A BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL Technical Note ●Notes for use (1) Absolute Maximum Ratings An excess in the absolute maximum ratings, such as supply voltage, temperature range of operating conditions, etc., can break down devices, thus making impossible to identify breaking mode such as a short circuit or an open circuit. If any special mode exceeding the absolute maximum ratings is assumed, consideration should be given to take physical safety measures including the use of fuses, etc. (2) Operating conditions These conditions represent a range within which characteristics can be provided approximately as expected. The electrical characteristics are guaranteed under the conditions of each parameter. (3) Reverse connection of power supply connector The reverse connection of power supply connector can break down ICs. Take protective measures against the breakdown due to the reverse connection, such as mounting an external diode between the power supply and the IC’s power supply terminal. (4) Power supply line Design PCB pattern to provide low impedance for the wiring between the power supply and the GND lines. In this regard, for the digital block power supply and the analog block power supply, even though these power supplies has the same level of potential, separate the power supply pattern for the digital block from that for the analog block, thus suppressing the diffraction of digital noises to the analog block power supply resulting from impedance common to the wiring patterns. For the GND line, give consideration to design the patterns in a similar manner. Furthermore, for all power supply terminals to ICs, mount a capacitor between the power supply and the GND terminal. At the same time, in order to use an electrolytic capacitor, thoroughly check to be sure the characteristics of the capacitor to be used present no problem including the occurrence of capacity dropout at a low temperature, thus determining the constant. (5) GND voltage Make setting of the potential of the GND terminal so that it will be maintained at the minimum in any operating state. Furthermore, check to be sure no terminals are at a potential lower than the GND voltage including an actual electric transient. (6) Short circuit between terminals and erroneous mounting In order to mount ICs on a set PCB, pay thorough attention to the direction and offset of the ICs. Erroneous mounting can break down the ICs. Furthermore, if a short circuit occurs due to foreign matters entering between terminals or between the terminal and the power supply or the GND terminal, the ICs can break down. (7) Operation in strong electromagnetic field Be noted that using ICs in the strong electromagnetic field can malfunction them. (8) Inspection with set PCB On the inspection with the set PCB, if a capacitor is connected to a low-impedance IC terminal, the IC can suffer stress. Therefore, be sure to discharge from the set PCB by each process. Furthermore, in order to mount or dismount the set PCB to/from the jig for the inspection process, be sure to turn OFF the power supply and then mount the set PCB to the jig. After the completion of the inspection, be sure to turn OFF the power supply and then dismount it from the jig. In addition, for protection against static electricity, establish a ground for the assembly process and pay thorough attention to the transportation and the storage of the set PCB. (9) Input terminals In terms of the construction of IC, parasitic elements are inevitably formed in relation to potential. The operation of the parasitic element can cause interference with circuit operation, thus resulting in a malfunction and then breakdown of the input terminal. Therefore, pay thorough attention not to handle the input terminals, such as to apply to the input terminals a voltage lower than the GND respectively, so that any parasitic element will operate. Furthermore, do not apply a voltage to the input terminals when no power supply voltage is applied to the IC. In addition, even if the power supply voltage is applied, apply to the input terminals a voltage lower than the power supply voltage or within the guaranteed value of electrical characteristics. (10) Ground wiring pattern If small-signal GND and large-current GND are provided, It will be recommended to separate the large-current GND pattern from the small-signal GND pattern and establish a single ground at the reference point of the set PCB so that resistance to the wiring pattern and voltage fluctuations due to a large current will cause no fluctuations in voltages of the small-signal GND. Pay attention not to cause fluctuations in the GND wiring pattern of external parts as well. (11) External capacitor In order to use a ceramic capacitor as the external capacitor, determine the constant with consideration given to a degradation in the nominal capacitance due to DC bias and changes in the capacitance due to temperature, etc. (12) About the rush current For ICs with more than one power supply, it is possible that rush current may flow instantaneously due to the internal powering sequence and delays. Therefore, give special consideration to power coupling capacitance, power wiring, width of GND wiring, and routing of wiring. www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. 23/25 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL ●Ordering part number B D 8 Part No. BD 8 2 0 0 G Part No. 88200 88210 88215 88220 U L - Package GUL: VCSP50L2 E 2 Packaging and forming specification E2: Embossed tape and reel VCSP50L2(BD88200GUL) <Tape and Reel information> 0.06 S 0.05 A B Tape Embossed carrier tape Quantity 3000pcs Direction of feed S E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.30±0.05 14- φ 0.25±0.05 0.55MAX 2.10±0.05 2.10±0.05 0.1±0.05 1PIN MARK A (φ0.15)INDEX POST B C B P=0.5×3 D A 1 0.30±0.05 2 3 1pin 4 P=0.5×3 Reel Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. VCSP50L2(BD88210GUL) <Tape and Reel information> 0.06 S 0.05 A B Tape Embossed carrier tape Quantity 3000pcs Direction of feed S E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.30±0.05 14- φ 0.25±0.05 0.55MAX 2.10±0.05 2.10±0.05 0.1±0.05 1PIN MARK A (φ0.15)INDEX POST B C B P=0.5×3 D A 1 0.30±0.05 2 3 1pin 4 P=0.5×3 Reel Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. VCSP50L2(BD88215GUL) <Tape and Reel information> 0.06 S 0.05 A B Tape Embossed carrier tape Quantity 3000pcs Direction of feed S E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.30±0.05 14- φ 0.25±0.05 0.55MAX 2.10±0.05 2.10±0.05 0.1±0.05 1PIN MARK A (φ0.15)INDEX POST B C B P=0.5×3 D A 1 0.30±0.05 2 3 1pin 4 P=0.5×3 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Reel 24/25 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.03 – Rev. A Technical Note BD88200GUL,BD88210GUL,BD88215GUL,BD88220GUL VCSP50L2(BD88220GUL) <Tape and Reel information> 0.06 S 0.05 A B Tape Embossed carrier tape Quantity 3000pcs Direction of feed S E2 The direction is the 1pin of product is at the upper left when you hold ( reel on the left hand and you pull out the tape on the right hand ) 0.30±0.05 14- φ 0.25±0.05 0.55MAX 2.10±0.05 2.10±0.05 0.1±0.05 1PIN MARK A (φ0.15)INDEX POST B C B P=0.5×3 D A 1 0.30±0.05 2 3 1pin 4 P=0.5×3 www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. Reel 25/25 Direction of feed ∗ Order quantity needs to be multiple of the minimum quantity. 2011.03 – Rev. A Notice Notes No copying or reproduction of this document, in part or in whole, is permitted without the consent of ROHM Co.,Ltd. The content specified herein is subject to change for improvement without notice. The content specified herein is for the purpose of introducing ROHM's products (hereinafter "Products"). If you wish to use any such Product, please be sure to refer to the specifications, which can be obtained from ROHM upon request. Examples of application circuits, circuit constants and any other information contained herein illustrate the standard usage and operations of the Products. The peripheral conditions must be taken into account when designing circuits for mass production. Great care was taken in ensuring the accuracy of the information specified in this document. However, should you incur any damage arising from any inaccuracy or misprint of such information, ROHM shall bear no responsibility for such damage. The technical information specified herein is intended only to show the typical functions of and examples of application circuits for the Products. ROHM does not grant you, explicitly or implicitly, any license to use or exercise intellectual property or other rights held by ROHM and other parties. ROHM shall bear no responsibility whatsoever for any dispute arising from the use of such technical information. The Products specified in this document are intended to be used with general-use electronic equipment or devices (such as audio visual equipment, office-automation equipment, communication devices, electronic appliances and amusement devices). The Products specified in this document are not designed to be radiation tolerant. While ROHM always makes efforts to enhance the quality and reliability of its Products, a Product may fail or malfunction for a variety of reasons. Please be sure to implement in your equipment using the Products safety measures to guard against the possibility of physical injury, fire or any other damage caused in the event of the failure of any Product, such as derating, redundancy, fire control and fail-safe designs. ROHM shall bear no responsibility whatsoever for your use of any Product outside of the prescribed scope or not in accordance with the instruction manual. The Products are not designed or manufactured to be used with any equipment, device or system which requires an extremely high level of reliability the failure or malfunction of which may result in a direct threat to human life or create a risk of human injury (such as a medical instrument, transportation equipment, aerospace machinery, nuclear-reactor controller, fuelcontroller or other safety device). ROHM shall bear no responsibility in any way for use of any of the Products for the above special purposes. If a Product is intended to be used for any such special purpose, please contact a ROHM sales representative before purchasing. If you intend to export or ship overseas any Product or technology specified herein that may be controlled under the Foreign Exchange and the Foreign Trade Law, you will be required to obtain a license or permit under the Law. Thank you for your accessing to ROHM product informations. More detail product informations and catalogs are available, please contact us. ROHM Customer Support System http://www.rohm.com/contact/ www.rohm.com © 2011 ROHM Co., Ltd. All rights reserved. R1120A