參數(shù)資料
型號(hào)： AD1887JST
廠商： ANALOG DEVICES INC
元件分類(lèi)： 消費(fèi)家電
英文描述： AC’97 SoundMAX Codec
中文描述： SPECIALTY CONSUMER CIRCUIT, PQFP48
封裝： PLASTIC, TQFP-48
文件頁(yè)數(shù)： 3/16頁(yè)
文件大?。?/td> 150K
代理商： AD1887JST
REV. 0
AD1887
–3–
ANALOG-TO-DIGITAL CONVERTERS
Parameter
Min
Typ
Max
Unit
Resolution
Total Harmonic Distortion (THD)
Dynamic Range (–60 dB Input THD + N Referenced to Full Scale, A-Weighted)
Signal-to-Intermodulation Distortion
*
(CCIF Method)
ADC Crosstalk
*
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 Error
16
–84
87
85
Bits
dB
dB
dB
84
–100
–90
–90
–85
±
10
±
0.5
±
5
dB
dB
%
dB
mV
DIGITAL-TO-ANALOG CONVERTERS
Parameter
Min
Typ
Max
Unit
Resolution
Total Harmonic Distortion (THD) HP_OUT
Dynamic Range (–60 dB Input THD + N Referenced to Full Scale, A-Weighted)
Signal-to-Intermodulation Distortion
*
(CCIF Method)
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
DAC Crosstalk
*
(Input L, Zero R, Measure R_OUT; Input R, Zero L,
Measure L_OUT)
Total Audible Out-of-Band Energy (Measured from 0.6
×
f
S
to 20 kHz)
*
16
–75
90
–100
±
10
Bits
dB
dB
dB
%
dB
dB
85
±
0.7
–80
–40
dB
ANALOG OUTPUT
Parameter
Min
Typ
Max
Unit
Full-Scale Output Voltage; HP_OUT
1
2.83
V rms
V p-p
pF
pF
V
V
mA
mV
Output Impedance
*
External Load Impedance
*
Output Capacitance
*
External Load Capacitance
V
REF
V
REF_OUT
V
REF_OUT
Current Drive
Mute Click (Muted Output Minus Unmuted Midscale DAC Output)
800
32
15
100
2.45
2.05
2.25
2.25
5
±
5
STATIC DIGITAL SPECIFICATIONS
Parameter
Min
0.65
×
DV
DD
Typ
Max
Unit
High-Level Input Voltage (V
IH
): Digital Inputs
Low-Level Input Voltage (V
IL
)
High-Level Output Voltage (V
OH
), I
OH
= 2 mA
Low-Level Output Voltage (V
OL
), I
OL
= 2 mA
Input Leakage Current
Output Leakage Current
V
0.35
×
DV
DD
V
0.9
×
DV
DD
V
V
μ
A
μ
A
0.1
×
DV
DD
+10
+10
–10
–10
POWER SUPPLY
Parameter
Min
Typ
Max
Unit
Power Supply Range—Analog (AV
DD
)
Power Supply Range—Digital (DV
DD
)
Power Dissipation—5 V/3.3 V
Analog Supply Current—5 V (AV
DD
)
Digital Supply Current—3.3 V (DV
DD
)
Power Supply Rejection (100 mV p-p Signal @ 1 kHz)
*
(At Both Analog and Digital Supply Pins, Both ADCs and DACs)
4.75
3.15
5.25
3.45
V
V
mW
mA
mA
dB
253
36
22
40
*
Guaranteed but not tested.
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