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SSM2932ACBZ-R7 数据表(PDF) 3 Page - Analog Devices |
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SSM2932ACBZ-R7 数据表(HTML) 3 Page - Analog Devices |
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3 / 16 page  Data Sheet SSM2932 Rev. 0 | Page 3 of 16 SPECIFICATIONS PVDD = 3.0 V, CCF = 1 μF, CCPVDD = CCPVSS = 2.2 μF, RL = 32 Ω, TA = 25°C, unless otherwise noted. Table 1. Parameter Symbol Test Conditions/Comments Min Typ Max Unit DEVICE CHARACTERISTICS Voltage Gain AV Input voltage = 100 mV rms GAIN pin high 6 dB GAIN pin low 0 dB Output Power PO f = 1 kHz, THD = 1% RL = 16 Ω, one channel 85 mW RL = 32 Ω, one channel 50 mW RL = 16 Ω, stereo 40 mW RL = 32 Ω, stereo 45 mW Total Harmonic Distortion Plus Noise THD + N PO = 10 mW per channel 0.01 % Gain Matching ΔAV 1 % Frequency Range Ripple within ±0.5 dB 20 20,000 Hz Differential Input Impedance ZIN 12 18 34.5 kΩ CHARGE PUMP Oscillator Frequency fOSC0 Idle mode, VOUT = 0 V 54 kHz fOSC1 Active mode 550 kHz Headphone Amplifier Supply Positive Rail VCPVDD Efficiency mode: VOUT < 0.2 V rms PVDD/2 V High power mode: VOUT > 0.2 V rms 2.2 V Negative Rail VCPVSS Efficiency mode: VOUT < 0.2 V rms −PVDD/2 V High power mode: VOUT > 0.2 V rms −2.2 V Output Voltage Threshold VTH1 Transition from efficiency mode to high power mode 285 mV VTH2 Transition from high power mode to efficiency mode 375 mV Charge Pump Transition Time tRELEASE Charge pump transition from high power mode to efficiency mode 0.8 ms tATTACK Charge pump transition from efficiency mode to high power mode 10 μs NOISE PERFORMANCE Output Voltage Noise en BW = 20 kHz, A-weighted, gain = 0 dB 12 μV rms Signal-to-Noise Ratio SNR A-weighted 98 dB Pop-and-Click Noise VCP −60 dBV Channel Separation XTALK Single-ended, 1 V rms, PO = 31 mW 86 dB OUTPUT CHARACTERISTICS Output Offset Voltage |VOS| 0.25 mV Capacitive Output Drive CLOAD 150 pF Slew Rate SR 1.25 V/μs STARTUP AND SHUTDOWN Measured from SD rising edge Start-Up Time tSU 20 ms Shutdown Time tSD 36 μs POWER SUPPLY 0°C < TA < 70°C Supply Voltage Range PVDD Guaranteed from PSRR test 2.5 3.6 V Quiescent Current IDD RL = 32 Ω + 200 pF; gain = 0 dB, PVDD = 3 V 1.7 mA Shutdown Current ISD SD = GND 1 μA Power Supply Rejection Ratio PSRR VRIPPLE = 100 mVPEAK, gain = 0 dB f = 217 Hz 90 dB f = 1 kHz 84 dB f = 10 kHz 62 dB |
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