AD1845 Просмотр технического описания (PDF) - Analog Devices
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AD1845 Datasheet PDF : 40 Pages
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ANALOG-TO-DIGITAL CONVERTERS
Resolution
Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)
THD+N (Referenced to Full Scale)
Signal-to-Intermodulation Distortion
ADC Crosstalk*
Line Inputs (Input L, Ground R, Read R; Input R, Ground L, Read L)
Line to MIC (Input LINE, Ground and Select MIC, Read ADC)
Line to AUX1
Line to AUX2
Gain Error (Full-Scale Span Relative to Nominal Input Voltage)
Interchannel Gain Mismatch (Difference of Gain Errors)
ADC Offset Error
AD1845
Min Typ
16
73
81
–76
85
–90
–90
–90
–90
–18.5
Max
0.025
–72
–80
–80
–80
–80
+10
± 0.9
10
Units
Bits
dB
%
dB
dB
dB
dB
dB
dB
%
dB
mV
DIGITAL-TO-ANALOG CONVERTERS
Resolution
Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale, A-Weighted)
THD+N (Referenced to Full Scale)
Signal-to-Intermodulation Distortion
Gain Error (Full-Scale Span Relative to Nominal Output 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 Out-of-Band Energy (Measured from 0.6 × FS to 100 kHz)*
Audible Out-of-Band Energy (Measured from 0.6 × FS to 20 kHz)*
Min Typ
16
74
82
–78
90
–14.5
Max
0.032
–70
+10
± 0.6
–80
–50
–70
DAC ATTENUATOR
Step Size (0 dB to –22.5 dB)
Step Size (–22.5 dB to –94.5 dB)*
Output Attenuation Range Span*
Min Typ Max
1.3 1.5 1.7
1.0 1.5 2.0
93.5 94.5 95.5
Units
Bits
dB
%
dB
dB
%
dB
dB
dB
dB
Units
dB
dB
dB
ANALOG OUTPUT
Full-Scale Output Voltage
OL = 0
OL = 1
Output Impedance*
External Load Impedance
Output Capacitance*
External Load Capacitance
VREF
VREF Current Drive
VREF Output Impedance
Mute Attenuation of 0 dB Fundamental* (L_OUT, R_OUT, M_OUT)
Mute Click (Muted Output Minus Unmuted Midscale DAC Output)*
*Guaranteed, not tested.
Min Typ Max
1.7 2.0 2.2
2.4 2.83 3.11
600
10
15
100
2.05 2.25 2.60
100
4
–80
±5
Units
V p-p
V p-p
Ω
kΩ
pF
pF
V
µA
kΩ
dB
mV
REV. C
–3–
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