AD1846 查看數據表（PDF） - Analog Devices
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AD1846 Datasheet PDF : 28 Pages
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AD1846–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE NOTED
DAC Output Conditions
Post-Autocalibrated
Temperature
25
°C
0 dB Attenuation
Digital Supply (VDD)
5.0
V
Analog Supply (VCC)
5.0
V
Word Rate (FS )
48
kHz
Input Signal
1007
Hz
Full Scale (0 dB)
16-Bit Linear Mode
No Output Load
Mute Off
Analog Output Passband
20 Hz to 20 kHz
ADC Input Conditions
FFT Size
4096
Post-Autocalibrated
VIH
2.4
V
0 dB Gain
VIL
0.8
V
–1.0 dB Relative to Full Scale
VOH
2.4
V
Line Input
VOL
0.4
V
16-Bit Linear Mode
Inputs Driven with Low Impedance (≈ 50 Ω) Source
ANALOG INPUT
Min
Typ
Max
Units
Full Scale Input Voltage (RMS Values Assume Sine Wave Input)
Line
1
V rms
2.5
2.8
3.1
V p-p
Mic
1
V rms
MGE = 0
2.5
2.8
3.1
V p-p
MGE = 1
0.29
0.36
0.43
V p-p
Input Impedance
100
kΩ
Input Capacitance
15
pF
PROGRAMMABLE GAIN AMPLIFIER—ADC
Min
Typ
Step Size (0 dB to 22.5 dB)
1.0
1.5
(All Steps Tested)
PGA Gain Range Span
21.0
22.5
Max
Units
2.0
dB
24.0
dB
AUXILIARY INPUT ANALOG AMPLIFIERS/ATTENUATORS
Min
Typ
Max
Units
Step Size (+12 dB to –28.5 dB, Referenced to DAC Full Scale)
1.3
1.5
1.7
dB
(–30 dB to –34.5 dB, Referenced to DAC Full Scale)
1.0
1.5
2.0
dB
Auxiliary Gain/Attenuation Range Span
45.5
46.5
47.5
dB
Auxiliary Input Impedance*
10
kΩ
–2–
REV. A
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