Quad Audio Line Driver with 3VRMS OutputMAX9727ELECTRICAL CHARACTERISTICS (VDD = PVDD = 3.3V, PGND = 0V, SHDN = VDD, VCM = 0V, C1 = C2 = 1µF, RIN = RF = 5kΩ, RL = ∞, TA = TMIN to TMAX. Typical val- ues are at TA = +25°C.) (Note 1) PARAMETERSYMBOLCONDITIONSMINTYPMAXUNITS VOUT = 1.6VRMS, BW = 22Hz to 22kHz, f = 1kHz, unweighted, RL = 10kΩ 0.0005 Total Harmonic Distortion Plus VOUT = 2VRMS, BW = 22Hz to 22kHz, THD+N % Noise f = 1kHz, unweighted, RL = 10kΩ 0.0006 VOUT = 1.6VRMS, BW = 22Hz to 22kHz, f = 1kHz, unweighted, RL = 1kΩ 0.003 V 22Hz to 22kHz 109 OUT = 1.6VRMS, RL = 1kΩ A-weighted 113.6 Signal-to-Noise Ratio SNR dB V 22Hz to 22kHz 111 OUT = 2VRMS, RL = 1kΩ A-weighted 115.5 Peak voltage, Into shutdown -62.2 Click-and-Pop Level KCP A-weighted, 32 dBV samples/s (Notes 2, 3) Out of shutdown -54.3 Slew Rate RL = 1kΩ, CL = 100pF 0.9 V/µs Turn-On Time tON 90 µs Turn-Off Time tOFF 1 µs Capacitive Drive CL No sustained oscillations 220 pF Crosstalk f = 10kHz -70 dB Large-Signal Open-Loop Gain AVOL VOUT = 2VRMS 82 dB Small-Signal Open-Loop Gain AVOS VOUT = 100mVRMS 95 dB Gain Bandwidth GBW 3 MHz Charge-Pump Switching fOSC 150 300 450 kHz Frequency Charge-Pump Output Impedance Measured at PVSS 20 Ω ESD Protection ESD HBM ±8 kV DIGITAL INPUTS ( SHDN ) Input-Voltage High VIH 2.0 V Input-Voltage Low VIL 0.8 V Input Leakage Current ILEAK ±1 µA Note 1: All devices are 100% tested at TA = +25°C. Specifications over temperature are guaranteed by design. Note 2: Inputs AC-coupled to PGND. Note 3: Click-and-pop testing performed with a 1kΩ resistive load connected to ground. Mode transitions are controlled by SHDN. KCP level is calculated as 20log[(peak voltage during mode transition, no input signal)/1VRMS]. Units are expressed in dBV. _______________________________________________________________________________________3