Analog Devices ADAV4622, Руководство пользователя

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ADAV4622
Rev. B | Page 7 of
28
Parameter Min Typ Max Unit Test Conditions/Comments
ADC SECTION
Number of Channels 4 Two stereo channels
Full-Scale Input Level 100 μA rms
Resolution 24 Bits
Dynamic Range (Stereo Channel)
A-Weighted 95 dB −60 dBFS with respect to full-scale analog input
Total Harmonic Dist Noise (Stereo
Channel)
−90 dB −3 dBFS with respect to full-scale analog input
Gain Mismatch 0.2 dB Left- and right-channel gain mismatch
Crosstalk (Left to Right, Right to Left) −110 dB
Gain Error −1 dB Input signal is 100 μA rms
Current Setting Resistor (R
ISET
) 20 kΩ External resistor to set current input range of ADC for
nominal 2.0 V rms input signal
Power Supply Rejection −87 dB 1 kHz, 300 mV p-p signal at AVDD
ADC DIGITAL DECIMATOR FILTER
CHARACTERISTICS
At 48 kHz, guaranteed by design
Pass Band 22.5 kHz
Pass-Band Ripple ±0.0002 dB
Stop Band 26.5 kHz
Stop-Band Attenuation 100 dB
Group Delay 1040 μs
PWM SECTION
Frequency 384 kHz Guaranteed by design
Modulation Index 0.976 Guaranteed by design
Dynamic Range
A-Weighted 98 dB −60 dB with respect to full-scale code input
Total Harmonic Dist Noise −78 dB −3 dB with respect to full-scale code input
DAC SECTION
Number of Auxiliary Output Channels 8 Four stereo channels
Resolution 24 Bits
Full-Scale Analog Output 1 V rms
Dynamic Range
A-Weighted 94 dB −60 dBFS with respect to full-scale code input
Total Harmonic Dist Noise −86 dB −3 dBFS with respect to full-scale code input
Crosstalk (Left to Right, Right to Left) −102 dB
Interchannel Gain Mismatch 0.1 dB Left- and right-channel gain mismatch
Gain Error 0.525 dB 1 V rms output
DC Bias 1.53 V
Power Supply Rejection −90 dB 1 kHz, 300 mV p-p signal at AVDD
Output Impedance 235 Ω
DAC DIGITAL INTERPOLATION FILTER
CHARACTERISTICS
At 48 kHz, guaranteed by design
Pass Band 21.769 kHz
Pass-Band Ripple ±0.01 dB
Transition Band 23.95 kHz
Stop Band 26.122 kHz
Stop-Band Attenuation 75 dB
Group Delay 580 μs
HEADPHONE AMPLIFIER Measured at headphone output with 32 Ω load
Number of Channels 4 Two stereo channels
Full-Scale Output Power 31 mW rms 1 V rms output
Dynamic Range
A-Weighted 93 dB −60 dBFS with respect to full-scale code input
Total Harmonic Dist Noise −83 dB −3 dBFS with respect to full-scale code input
Interchannel Gain Mismatch 0.1 dB
DC Bias 1.53 V
Power Supply Rejection −85 dB 1 kHz, 300 mV p-p signal at AVDD