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AD1981A Datasheet(PDF) 3 Page - Analog Devices

Part # AD1981A
Description  AC ??7 SoundMAX Codec
Download  24 Pages
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Manufacturer  AD [Analog Devices]
Direct Link  http://www.analog.com
Logo AD - Analog Devices

AD1981A Datasheet(HTML) 3 Page - Analog Devices

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AD1981A
SPECIFICATIONS
Parameter
Min
Typ
Max
Unit
ANALOG-TO-DIGITAL CONVERTERS
Resolution
16
Bits
Total Harmonic Distortion (THD)
–84
dB
Dynamic Range
(–60 dB Input THD+N Referenced to Full Scale, A-Weighted)
80
85
dB
Signal-to-Intermodulation Distortion (CCIF Method)
1
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
±5mV
DIGITAL-TO-ANALOG CONVERTERS
Resolution
20
Bits
Total Harmonic Distortion (THD) LINE_OUT
–85
dB
Total Harmonic Distortion (THD) HP_OUT
–75
dB
Dynamic Range
(–60 dB Input THD+N Referenced to Full Scale, A-Weighted)
85
90
dB
Signal-to-Intermodulation Distortion (CCIF Method)1
–100
dB
Gain Error (Actual Output Full-Scale Voltage Relative to Nominal
Output Full-Scale)
±10
%
Interchannel Gain Mismatch (Difference of Gain Errors)
±0.7
dB
DAC Crosstalk (Input L, Zero R, Measure R_OUT; Input R,
Zero L, Measure L_OUT)
1
–80
dB
Total Audible Out-of-Band Energy (Measured from 0.6
× F
S to 20 kHz)
1
–40
dB
ANALOG OUTPUT
Full-Scale Output Voltage; LINE_OUT and MONO_OUT
1
Vrms
2.83
Vp-p
Output Impedance
1
800
External Load Impedance
1
10
k
Output Capacitance
1
15
pF
External Load Capacitance
100
pF
Full-Scale Output Voltage; HP_OUT (0 dB Gain)
1
Vrms
External Load Capacitance
1
100
pF
External Load Impedance
1
32
VREF
2.05
2.25
2.45
V
VREFOUT (selectable to 3.70 V nominal)
2.25
V
VREFOUT Current Drive
5mA
Mute Click
(Muted Output Minus Unmuted Midscale DAC Output)
±5mV
STATIC DIGITAL SPECIFICATIONS
High Level Input Voltage (VIH): Digital Inputs
0.65
× DVDD
V
Low Level Input Voltage (VIL)
0.35
× DVDD
V
High Level Output Voltage (VOH), IOH = 2 mA
0.9
× DVDD
V
Low Level Output Voltage (VOL), IOL = 2 mA
0.1
× DVDD
V
Input Leakage Current
–10
10
µA
Output Leakage Current
–10
10
µA
POWER SUPPLY
Power Supply Range – Analog (AVDD)
4.65
5.25
V
Power Supply Range – Digital (DVDD)
3.15
3.45
V
Power Dissipation – 5 V/3.3 V
555
mW
Analog Supply Current – 5 V (AVDD)78
mA
Digital Supply Current – 3.3 V(DVDD)50
mA
Power Supply Rejection (100 mV p-p Signal @ 1 kHz)
1
(At Both Analog and Digital Supply Pins, Both ADCs and DACs)
40
dB
CLOCK SPECIFICATIONS
1
Input Clock Frequency
24.576
MHz
Recommended Clock Duty Cycle
40
50
60
%


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