APA2178

APA2178 100mW Stereo Cap-Free Headphone Driver Features General Description The APA2178 is a stereo, fixed gain, Cap-Free headphone driver which is available in a WLCSP2x2-16 package. The APA2178 is a ground-reference output, and doesn’ t need the output capacitors for DC blocking. The advantages of eliminating the output capacitor are saving the cost, PCB’ space, and component height. s The built-in gain setting can minimize the external component counts and save the PCB space. High PSRR provides increased immunity to noise and RF rectification. In addition to these features, a fast startup time and small package size make the APA2178 an ideal choice for portable multimedia device. Moreover, the APA2178 is also equipped other features. For example, it is capable of driving 100mW at 3.3V into 16Ω, at THD+N=10% and provides thermal and short circuit protection. • • • • • • No Output Capacitor Required Operating Voltage: 1.8V~4.5V Supply Current – IDD=5mA at VDD=3.3V Low Shutdown Current – IDD=1µA at VDD=3.3V Meeting VISTA Requirements Output Power at 1% THD+N – 70mW, at VDD=3.3V, RL = 16Ω at 10% THD+N – 100mW, at VDD=3.3V, RL = 16Ω Less External Components Required High PSRR: 78dB at 217Hz Short-Circuit and Thermal Protection ± 8KV ESD Performance Surface-Mount Packaging – WLCSP2x2-16 Lead Free and Green Devices Available (RoHS Compliant) • • • • • • Applications • • • • Handsets PDAs Portable multimedia devices Notebooks Simplified Application Circuit R-CH Input RIN ROUT L-CH Input LIN Stereo Headphone APA2178 LOUT Shutdown Control RSD LSD ANPEC reserves the right to make changes to improve reliability or manufacturability without notice, and advise customers to obtain the latest version of relevant information to verify before placing orders. Copyright © ANPEC Electronics Corp. Rev. A.3 - Jul., 2009 1 www.anpec.com.tw APA2178 Ordering and Marking Information APA2178 Assembly Material Handling Code Temperature Range Package Code AP78 X Package Code HA : WLCSP2x2-16 Operating Ambient Temperature Range I : -40 to 85 oC Handling Code TR : Tape & Reel Assembly Material G : Halogen and Lead Free Device APA2178 HA : X - Date Code Note: ANPEC lead-free products contain molding compounds/die attach materials and 100% matte tin plate termination finish; which are fully compliant with RoHS. ANPEC lead-free products meet or exceed the lead-free requirements of IPC/JEDEC J-STD-020C for MSL classification at lead-free peak reflow temperature. ANPEC defines “Green” to mean lead-free (RoHS compliant) and halogen free (Br or Cl does not exceed 900ppm by weight in homogeneous material and total of Br and Cl does not exceed 1500ppm by weight). Pin Configuration CP+ (A4) PGND (B4) CP(C4) CVSS (D4) PVDD (A3) NC (B3) NC (C3) VSS (D3) GND (A2) LSD (B2) ROUT (C2) LOUT (D2) RIN (A1) RSD (B1) LIN (C1) VDD (D1) X Marking PIN A1 Date Code C opyright © A NPEC Electronics Corp. Rev. A.3 - Jul., 2009 2 www.anpec.com.tw APA2178 Absolute Maximum Ratings Symbol VPVDD_VDD VPGND_GND PVDD, VDD VRSD, VLSD VSS, CVSS VROUT, VLOUT VCP+ VCPTA TJ TSTG TSDR PD PVDD to VDD Voltage PGND to GND Voltage Supply Voltage (VDD and PVDD to GND and PGND) Input Voltage (RSD and LSD to GND) VSS and CVSS to GND and PGND Voltage ROUT and LOUT to GND Voltage CP+ to PGND Voltage CP- to PGND Voltage Operating Ambient Temperature Range Maximum Junction Temperature Storage Temperature Range Maximum Soldering Temperature Range, 10 Seconds Power Dissipation (Note 1) (Over operating free-air temperature range unless otherwise noted.) Parameter Rating -0.3 to 0.3 -0.3 to 0.3 -0.3 to 5.5 GND-0.3 to VDD+0.3 -5.5 to 0.3 VSS-0.3 to VDD+0.3 PGND-0.3 to PVDD+0.3 PVSS-0.3 to PGND+0.3 -40 to 85 150 -65 to +150 260 Internally Limited Unit V V V V V V V V ο ο C C C ο ο C W Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Exposure to absolute maximum rating conditions for extended periods may affect device reliability. Thermal Characteristics Symbol θJA Parameter Junction-to-Ambient Resistance in Free Air (Note 2) Typical Value WLCSP2x2-16 160 Unit o C/W Note 2: Please refer to “Thermal Pad Consideration”. 2 layered 5 in2 printed circuit boards with 2oz trace and copper through several thermal vias. The thermal pad is soldered on the PCB. Recommended Operating Conditions (Note 3) Symbol VDD VIH VIL VICM TA TJ RL Supply Voltage High Level Threshold Voltage Low Level Threshold Voltage Common Mode Input Voltage Ambient Temperature Junction Temperature Headphone Resistance RSD, LSD RSD, LSD Parameter Range 1.8 ~ 4.5 0.6VDD ~ VDD 0 ~ 0.3VDD ~ VDD-0.5 -40 ~ 85 -40 ~ 125 14 ~ Unit V V V V o o C C Ω Note 3 : Refer to the typical application circuit. C opyright © A NPEC Electronics Corp. Rev. A.3 - Jul., 2009 3 www.anpec.com.tw APA2178 Electrical Characteristics Unless otherwise specified, these specifications apply over VDD=PVDD=3.3V, VPGND=VGND=0V, and CCPO=CCPF=1µF. Typical values are at TA=25oC. Symbol VDD IDD ISD Ii Parameter Supply Voltage Supply Current Shutdown Current Input Current RSD =LSD= 0V RSD, LSD Test Conditions Min. 1.8 AP2178 Typ. 5 1 0.1 Max. 4.5 10 2 V mA µA µA Unit CHARGE PUMP Switching Frequency Charge Pump Requirement Req Resistance POWER-ON-RESET Rising VDD Threshold Falling VDD Threshold AMPLIFIERS AV ∆A V Ri SR VOS Vn Internal Voltage Gain Gain Match Input Resistance Slew Rate Output Offset Voltage Noise Output Voltage VDD=1.8V to 4.5V,Vrr=200mVrms PSRR Power Supply Rejection Ratio fin= 217Hz fin=1kHz fin= 20kHz CL Tstart-up OUTR, OUTL Maximum Capacitive Load Start-up Time ESD Protection 78 75 55 400 120 ±8 pF µs kV dB VDD=1.8V to 4.5V, RL = 32Ω No Load -1.55 12 -5 -1.5 1 14 2.5 15 -1.45 16 5 V/V % kΩ V/µs mV µVrms FOSC 440 6 520 7 580 9 kHz Ω 1.67 1.57 1.7 1.6 1.73 1.63 V V VDD=4.5V, TA=25° C THD+N = 1%, fin=1kHz RL = 16Ω PO Output Power (Stereo, in Phase) RL = 32Ω THD+N = 10%, fin=1kHz RL = 16Ω RL = 32Ω fin = 1kHz PO = 105mW, RL = 16Ω THD+N Total Harmonic Distortion Pulse Noise PO = 100mW, RL = 32Ω VO = 2.2Vrms, RL = 300Ω VO = 2.2Vrms, RL = 10kΩ 0.03 0.02 0.005 0.003 % 180 215 205 120 150 145 mW C opyright © A NPEC Electronics Corp. Rev. A.3 - Jul., 2009 4 www.anpec.com.tw APA2178 Electrical Characteristics (Cont.) Unless otherwise specified, these specifications apply over VDD=PVDD=3.3V, VPGND=VGND=0V, and CCPO=CCPF=1µF. Typical values are at TA=25oC. Symbol VDD=4.5V, TA=25° (CONT.) C fin = 1kHz PO = 15mW, RL = 16Ω Crosstalk Channel Separation PO = 15mW, RL = 32Ω VO = 0.31Vrms, RL = 300Ω VO = 0.31Vrms, RL = 10kΩ W ith A-weighting Filter S/N Signal-to-Noise Ratio PO = 100mW, RL = 32Ω VO = 3.1Vrms, RL = 10kΩ VDD=3.3V, TA=25° C THD+N = 1%, fin=1kHz RL = 16Ω PO Output Power (Stereo, in Phase) RL = 32Ω THD+N = 10%, fin=1kHz RL = 16Ω RL = 32Ω fin = 1kHz PO = 50mW, RL = 16Ω THD+N Total Harmonic Distortion Pulse Noise PO = 50mW, RL = 32Ω VO = 1.6Vrms, RL = 300Ω VO = 1.6Vrms, RL = 10kΩ fin = 1kHz PO = 7mW, RL = 16Ω Crosstalk Channel Separation PO = 7mW, RL = 32Ω VO = 0.23Vrms, RL = 300Ω VO = 0.23Vrms, RL = 10kΩ W ith A-weighting Filter S/N Signal-to-Noise Ratio PO = 50mW, RL = 32Ω VO = 2.3Vrms, RL = 10kΩ VDD=1.8V, TA=25° C THD+N = 1%, fin=1kHz PO Output Power (Stereo, in Phase) RL = 32Ω THD+N = 10%, fin=1kHz RL = 32Ω fin = 1kHz THD+N Total Harmonic Distortion Pulse Noise PO = 9mW, RL = 32Ω VO = 0.85Vrms, RL = 300Ω VO = 0.85Vrms, RL = 10kΩ 0.03 0.007 0.005 % 15 20 10 13 mW 95 100 dB 75 85 95 95 dB 0.03 0.02 0.005 0.003 % 80 100 100 55 70 70 mW 100 105 dB 75 80 95 100 dB Parameter Test Conditions APA2178 Min. Typ. Max. Unit C opyright © A NPEC Electronics Corp. Rev. A.3 - Jul., 2009 5 www.anpec.com.tw APA2178 Electrical Characteristics (Cont.) Unless otherwise specified, these specifications apply over VDD=PVDD=3.3V, VPGND=VGND=0V, and CCPO=CCPF=1µF. Typical values are at TA=25oC. Symbol VDD=1.8V, TA=25° (CONT.) C Parameter Test Conditions APA2178 Min. Typ. Max. Unit fin = 1kHz Crosstalk Channel separation PO = 1.3mW, RL = 32Ω VO = 0.12Vrms, RL = 300Ω VO = 0.12Vrms, RL = 10kΩ W ith A-weighting Filter S/N Signal-to-Noise Ratio PO = 9mW, RL = 32Ω VO =1.2Vrms, RL = 10kΩ 95 95 dB 80 85 90 dB C opyright © A NPEC Electronics Corp. Rev. A.3 - Jul., 2009 6 www.anpec.com.tw APA2178 Typical Operating Characteristics THD+N vs. Output Voltage 10 VDD=4.5V fin=1kHz Cin=1µF BW