AD1985 데이터 시트보기 (PDF) - Analog Devices
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AD1985 Datasheet PDF : 48 Pages
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AD1985
ANALOG MIXER—INPUT GAIN/AMPLIFIERS/ATTENUATORS
Table 5.
Parameter
SIGNAL-TO-NOISE RATIO (SNR)
CD to LINE_OUT
LINE, AUX, PHONE, to LINE_OUT
MIC1 or MIC2 to LINE_OUT
Step Size: All Mixer Inputs, Except PC Beep
Input Gain/Attenuation Range (+12 dB to –34.5 dB): All Mixer Inputs, Except PC Beep
Min Typ Max Unit
90
dB
85
dB
80
dB
1.5
dB
46.5
dB
DIGITAL DECIMATION AND INTERPOLATION FILTERS1
Table 6.
Parameter
PASS BAND
PASS-BAND RIPPLE
TRANSITION BAND
STOP BAND
STOP-BAND REJECTION
GROUP DELAY
GROUP DELAY VARIATION OVER PASS BAND
Min
0
0.4 ×
fS
0.6 ×
fS
–74
Typ
16/fS
0
Max Unit
0.4 × fS Hz
±0.09 dB
0.6 × fS Hz
∞
Hz
dB
s
µs
ANALOG-TO-DIGITAL CONVERTERS
Table 7.
Parameter
RESOLUTION
TOTAL HARMONIC DISTORTION (THD)
DYNAMIC RANGE (–60 dB IN; THD+N REFERENCED TO FULL-SCALE; A-WEIGHTED)
SIGNAL-TO-INTERMODULATION DISTORTION (CCIF METHOD)1
ADC CROSSTALK1
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
LINE_IN to Other
GAIN ERROR (FULL-SCALE SPAN RELATIVE TO NOMINAL INPUT VOLTAGE)
INTERCHANNEL GAIN MISMATCH (DIFFERENCE OF GAIN ERRORS)
ADC OFFSET ERROR1
Min Typ Max Unit
16
Bits
−85
dB
84
dB
85
dB
−85
dB
−95
dB
±10 %
±0.5 dB
±5
mV
DIGITAL-TO-ANALOG CONVERTERS
Table 8.
Parameter
Min Typ Max Unit
RESOLUTION
20
Bits
TOTAL HARMONIC DISTORTION (THD); LINE_OUT, C/LFE
–90
dB
TOTAL HARMONIC DISTORTION (THD); HP_OUT
–75
dB
DYNAMIC RANGE (–60 dB IN; THD+N REFERENCED TO FULL-SCALE; A-WEIGHTED)
90
dB
SIGNAL-TO-INTERMODULATION DISTORTION (CCIF METHOD)1
100
dB
GAIN ERROR (OUTPUT FULL-SCALE VOLTAGE RELATIVE TO NOMINAL OUTPUT FULL-SCALE VOLTAGE)2
±10
%
INTERCHANNEL GAIN MISMATCH (DIFFERENCE OF GAIN ERRORS)
±0.7 dB
DAC CROSSTALK (INPUT L, ZERO R, READ R_OUT; INPUT R, ZERO L, READ L_OUT)1
–100
dB
TOTAL OUT-OF-BAND ENERGY (MEASURED FROM 0.6 × fS TO 100 KHZ)1
–85
dB
1 Guaranteed, not tested.
2 C/LFE specified with 10 kΩ load.
Rev. A | Page 5 of 48
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