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AD1981BLJSTZ-REEL 数据手册 - ADI（亚德诺）
制造商:
ADI（亚德诺）
分类:
主动器件
封装:
LQFP
描述:
AC 97的SoundMAX编解码器 AC 97 SoundMAX Codec
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AD1981BLJSTZ-REEL数据手册
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AD1981BL
Rev. A | Page 4 of 32
Parameter Min Typ Max Unit
Step Size (+12 dB to −34.5 dB) (All Steps Tested):
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC 1.5 dB
Input Gain/Attenuation Range:
MIC_IN, LINE_IN, CD, AUX, PHONE_IN, DAC 46.5 dB
DIGITAL DECIMATION AND INTERPOLATION FILTERS
1
Pass Band 0 0.4 × f
S
Hz
Pass-Band Ripple ±0.09 dB
Transition Band 0.4 × f
S
0.6 × f
S
Hz
Stop Band 0.6 × f
S
∞
Hz
Stop-Band Rejection −74 dB
Group Delay 16/f
S
sec
Group Delay Variation over Pass Band 0 µs
ANALOG-TO-DIGITAL CONVERTERS
Resolution 16 Bits
Total Harmonic Distortion (THD) −87 dB
Dynamic Range (−60 dB Input THD + N Referenced to Full Scale, A-Weighted) 78 83 dB
Signal-to-Intermodulation Distortion
1
CCIF Method) 85 dB
ADC Crosstalk
1
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L) −80 dB
Line_In to Other −100 −80 dB
Gain Error
2
(Full-Scale Span Relative to Nominal Input Voltage) ±10 %
Interchannel Gain Mismatch (Difference of Gain Errors) ± 0.5 dB
ADC Offset Error
1
±5 mV
DIGITAL-TO-ANALOG CONVERTERS
Resolution 20 Bits
Total Harmonic Distortion (THD) LINE_OUT −88 dB
Total Harmonic Distortion (THD) HP_OUT −81 dB
Dynamic Range (−60 dB Input THD + N Referenced to Full Scale, A-Weighted) 82 87.5 dB
Signal-to-Intermodulation Distortion
1
(CCIF Method) −100 dB
Gain Error
2
(Output FS Voltage Relative to Nominal Output FS Voltage) ±10 %
Interchannel Gain Mismatch (Difference of Gain Errors) ±0.7 dB
DAC Crosstalk
1
(Input L, Zero R, Measure R_OUT; Input R, Zero L, Measure
L_OUT)
−80 dB
ANALOG OUTPUT
Full-Scale Output Voltage; LINE_OUT and MONO_OUT 0.707 V rms
2.0 V p-p
Output Impedance
1
800 Ω
External Load Impedance
1
10 kΩ
Output Capacitance
1
15 pF
External Load Capacitance
1
100 pF
Full-Scale Output Voltage; HP_OUT (0 dB Gain) 1 V rms
External Load Impedance
1
32 Ω
V
REF
1 1.12 1.225 V
V
REFOUT
2.25 V
V
REFOUT
Current Drive 5 mA
Mute Click (Muted Output Minus Unmuted Midscale DAC Output) ±5 mV
STATIC DIGITAL SPECIFICATIONS
High Level Input Voltage (V
IH
): Digital Inputs 0.65 × DV
DD
V
Low Level Input Voltage (V
IL
) 0.35 × DV
DD
V
High Level Output Voltage (V
OH
), I
OH
= 2 mA 0.9 × DV
DD
V
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