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DA7212 데이터시트(PDF) 21 Page - Dialog Semiconductor

부품명 DA7212
상세설명  Ultra-low power stereo codec
PDF  129 Pages
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제조업체  DIALOG [Dialog Semiconductor]
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DA7212 데이터시트(HTML) 21 Page - Dialog Semiconductor

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DA7212
Ultra-low power stereo codec
Company confidential
Datasheet
Revision 3c
24-Nov-2015
21 of 129
© 2015 Dialog Semiconductor
Table 17: True ground headphone amplifier
From DAC_L/DAC_R to (HP_L/HP_R)
Parameter
Description
Conditions
Min
Typ
Max
Unit
VMAX
Full-scale output signal
No load
1.6×VDD_A
VPP
DC output offset
HP Gain < -30 dB
100
µV
PMAX
Maximum power per
channel
VDD_A = 1.6 V
THD < 0.1 %
RLOAD=16 Ω, 1 kHz
L = 23
R = 23
mWRMS
VDD_A = 1.8 V
THD < 0.1 %
RLOAD=16 Ω, 1 kHz
L = 29
R = 29
mWRMS
VDD_A = 2.5 V
THD < 0.1 %
RLOAD=16 Ω, 1 kHz
L = 67
R = 67
mWRMS
RLOAD
LLOAD
CLOAD
Load impedance
13
16
400
500
Ω
µH
pF
Frequency response
±0.5 dB
20
20k
Hz
Amplitude ripple
20 Hz to 20 kHz
-0.5
+0.5
dB
Programmable gain
-56
+6
dB
Mute attenuation
70
dB
Programmable gain step
size
1.0
dB
Absolute gain accuracy
0 dB @ 1 kHz
-0.8
+0.8
dB
Input gain L/R-mismatch
20 Hz to 20 kHz
-0.1
+0.1
dB
Input gain step error
20 Hz to 20 kHz
-0.1
+0.1
dB
SNR
Signal to noise ratio
A-weighted
gain = 0 dB
VDD_A = 2.5 V
VDD_A = 1.8 V
RLOAD=16 Ω
100
98
dB
VNOISE
Output noise level
20 to 20 kHz,
non A-weighted
gain < -20 dB
2.5
µVrms
THD+N
Total harmonic distortion
plus noise
VDD_A = 1.6 V
-5 dBFS
RLOAD=16 Ω
-87
dB
PSRR with
respect to
VDD_A
Power supply rejection
ratio
20 Hz
– 2 kHz
2 kHz
– 20 kHz
70
50
dB



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