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參數(shù)資料
| 型號(hào)： | AD1801 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | Single-Chip Fax/Data/ Voice Modem(單片的傳真/數(shù)據(jù)/語(yǔ)音調(diào)制解調(diào)器) |
| 中文描述： | 單芯片傳真/數(shù)據(jù)/語(yǔ)音調(diào)制解調(diào)器（單片的傳真/數(shù)據(jù)/語(yǔ)音調(diào)制解調(diào)器） |
| 文件頁(yè)數(shù)： | 2/52頁(yè) |
| 文件大?。?/td> | 348K |
| 代理商： | AD1801 |
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AD1801–SPECIFICATIONS
STANDARD TEST CONDITIONS UNLESS OTHERWISE
NOTED
Temperature
25
°
C
Digital Supply (V
DD
)
5.0 V
Analog Supply (V
CC
)
5.0 V
Sample Rate (F
S
)
48 kHz
Input Signal
1008 Hz
Analog Output Passband
20 Hz to 20 kHz
ADC FFT Size
2048
DAC FFT Size
8192
V
IH
2.0 V
V
IL
0.8 V
V
OH
2.4 V
V
OL
0.4 V
I
OH
–2 mA
I
OL
2 mA
DAA RECEIVE PATH
Min
Typ
Max
Units
Full-Scale Input Voltage (RMS Values Assume Sine Wave Input, PGA
Gain = 0 dB, Offset Error = 0% of FS)
DAA Receive Differential Input
2
5.656
V rms
V p-p
k
pF
4.523
40
6.787
Resistance—DAA RCV Input
Capacitance—DAA RCV Input
Programmable Gain Amplifier (Relative to Full-Scale Input Voltage)
Gain = +6 dB
Gain = +12 dB
Analog-to-Digital Converter
Differential Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = 0 dB)
Differential Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = +6 dB)
Differential Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = +12 dB)
Differential THD+N (–1.0 dB Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz)
Differential Signal-to-Intermodulation Distortion [CCIF Method]
Single-Ended Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = 0 dB
[Effectively –6 dB PGA Gain; See Below*])
Single-Ended Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = +6 dB
[Effectively 0 dB PGA Gain; See Below*])
Single-Ended Dynamic Range (–60 dB Input, THD+N Referenced to Full Scale,
4 kHz Analog Output Passband, F
S
= 12.0 kHz, PGA Gain = +12 dB
[Effectively +6 dB PGA Gain; See Below*])
Single-Ended THD+N (–1.0 dB Referenced to Full Scale, 4 kHz
Analog Output Passband, F
S
= 12.0 kHz)
Single-Ended Signal-to-Intermodulation Distortion [CCIF Method]
Crosstalk* (DAA RCV Input to Handset MIC/Line Input)
Offset Error (0 V Differential Analog Input)
PGA Gain = 0 dB
PGA Gain = +6 dB
PGA Gain = +12 dB
15
5.5
11
6
12
6.5
13
dB
dB
81
84
dB
78
81
dB
75
78
dB
%
dB
dB
0.02
–74
–80
–80
–90
81
84
dB
78
81
dB
75
78
dB
%
dB
dB
dB
0.02
–74
–80
–80
–80
–90
30
30
30
100
LSBs
LSBs
LSBs
*When the DAA Receive ADC is used in a single-ended input circuit configuration, the user would apply a full-scale input of 1 V rms to RCVP and connect RCVN via a 1
μ
F
capacitor to ground. However, this will result in an output word that is –6 dB down from full scale when the PGA is set for 0 dB, because the ADC input sees half the signal
swing compared to when the ADC is driven differentially. Therefore, the effective PGA gain of the ADC, when used single-ended, is 6 dB less than when used differentially.
To get a full-scale output with a 1 V rms input, the PGA should be programmed for 6 dB gain, which is an effective single-ended gain of 0 dB.
–2–
REV. 0
Output Conditions
Autocalibrated
0 dB Attenuation
0 dB Output Relative to Full Scale
16-Bit Linear Mode
600
DAA Load
1 k
Handset Load
10 k
Line Out Load
Mute Off
All DAA Transmit and Handset Speaker Specifications
are Measured Differentially
Input Conditions
MIC 20 dB Gain Disabled
Autocalibrated
–1.0 dB Input Relative to Full Scale
16-Bit Linear Mode
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
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