Headphone Amplifier - Analog Devices ADAV4622 Manual

Parameter
ADC SECTION
Number of Channels
Full-Scale Input Level
Resolution
Dynamic Range (Stereo Channel)
A-Weighted
Total Harmonic Distortion + Noise (Stereo
Channel)
Gain Mismatch
Crosstalk (Left to Right, Right to Left)
Gain Error
Current Setting Resistor (R )
ISET
Power Supply Rejection
ADC DIGITAL DECIMATOR FILTER
CHARACTERISTICS
Pass Band
Pass-Band Ripple
Stop Band
Stop-Band Attenuation
Group Delay
PWM SECTION
Frequency
Modulation Index
Dynamic Range
A-Weighted
Total Harmonic Distortion + Noise
DAC SECTION
Number of Auxiliary Output Channels
Resolution
Full-Scale Analog Output
Dynamic Range
A-Weighted
Total Harmonic Distortion + Noise
Crosstalk (Left to Right, Right to Left)
Interchannel Gain Mismatch
Gain Error
DC Bias
Power Supply Rejection
Output Impedance
DAC DIGITAL INTERPOLATION FILTER
CHARACTERISTICS
Pass Band
Pass-Band Ripple
Transition Band
Stop Band
Stop-Band Attenuation
Group Delay

HEADPHONE AMPLIFIER

Number of Channels
Full-Scale Output Power
Dynamic Range
A-Weighted
Total Harmonic Distortion + Noise
Interchannel Gain Mismatch
DC Bias
Power Supply Rejection
Min Typ Max
4
100
24
95
−90
0.2
−110
−1
20
−87
22.5
±0.0002
26.5
100
1040
384
0.976
98
−78
8
24
1
94
−86
−102
0.1
0.525
1.53
−90
235
21.769
±0.01
23.95
26.122
75
580
4
31
93
−83
0.1
1.53
−85
Rev. B | Page 7 of 28
Unit Test Conditions/Comments
Two stereo channels
μA rms
Bits
dB −60 dBFS with respect to full-scale analog input
dB −3 dBFS with respect to full-scale analog input
dB Left- and right-channel gain mismatch
dB
dB Input signal is 100 μA rms
kΩ External resistor to set current input range of ADC for
nominal 2.0 V rms input signal
dB 1 kHz, 300 mV p-p signal at AVDD
At 48 kHz, guaranteed by design
kHz
dB
kHz
dB
μs
kHz Guaranteed by design
Guaranteed by design
dB −60 dB with respect to full-scale code input
dB −3 dB with respect to full-scale code input
Four stereo channels
Bits
V rms
dB −60 dBFS with respect to full-scale code input
dB −3 dBFS with respect to full-scale code input
dB
dB Left- and right-channel gain mismatch
dB 1 V rms output
V
dB 1 kHz, 300 mV p-p signal at AVDD
Ω
At 48 kHz, guaranteed by design
kHz
dB
kHz
kHz
dB
μs
Measured at headphone output with 32 Ω load
Two stereo channels
mW rms 1 V rms output
dB −60 dBFS with respect to full-scale code input
dB −3 dBFS with respect to full-scale code input
dB
V
dB 1 kHz, 300 mV p-p signal at AVDD
ADAV4622