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AD1803 Folha de dados(PDF) 3 Page - Analog Devices

Nome de Peças AD1803
Descrição Electrónicos  Modem/Telephony Codec
Download  32 Pages
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD1803 Folha de dados(HTML) 3 Page - Analog Devices

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AD1803
Rev. A | Page 3 of 32
SPECIFICATIONS
TEST CONDITIONS
Test conditions for the AD1803 are as follows, unless otherwise noted.
General Test Conditions
Temperature at 25°C
Digital supply at 3.3 V/5 V
Analog supply at 3.3 V/5 V
Sample rate (fS) at 8 kHz
Input signal at 1008 Hz
Analog output pass band at 20 Hz to 4 kHz
ADC FFT size at 512
DAC FFT size at 4096
VIH @ 2.1 V
VIL @ 1.2 V
VOH @ 2.9 V
VOL @ 0.3 V
IOH @ −2.0 mA
IOL @ +2.0 mA
DAC Output Test Conditions
0 dB attenuation relative to full scale
Input 0 dB
Mute Off
10 kΩ output load
ADC Input Test Conditions
Autocalibrated
0 dB PGA gain
Mute off
Input: 1.0 dB relative to full scale
Table 1.
Parameter
Test Conditions/Comments
Min
Typ
Max
Unit
ADC RECEIVE PATH
Full-Scale Input Voltage1
PGA gain = 0 dB, offset error = 0% of FS
1.56
V rms
AD1803 Rx Input
0 dBm
2.1
2.2
2.3
V p-p
Resistance—Rx Input2
0 dB Gain
110
+20 dB Gain
10
Capacitance—Rx Input2
15
pF
Rx Programmable Gain
Gain Step Size3
0 dB to 42.5 dB
1.0
1.5
2.0
dB
Input Gain Span4
41.5
42.5
43.5
dB
Analog-to-Digital Converter
Dynamic Range5
−60 dB input, PGA gain = 0 dB
85
90
dB
Dynamic Range2, 5
−60 dB input, PGA gain = 6 dB
90
dB
Dynamic Range2, 5
−60 dB input, PGA gain = +12 dB
90
dB
THD + N
−1 dB input referenced to full scale
−90
−85
dB
Signal-to-Intermodulation Distortion2
CCIF method
80
dB
Offset Error
0 V analog input, PGA gain = 0 dB
1
5
% of FS
DAC TRANSMIT PATH
Digital-to-Analog Converter
Dynamic Range5
−60 dB input, output gain = 0 dB
85
dB
THD + N
−1 dB input referenced to full scale
−75
dB
Signal-to-Intermodulation Distortion2
CCIF method
80
dB
Total Out-of-Band Energy2
Measured from 0.555 × fS to 100 kHz
−40
dB
DC Offset
100
mV
Programmable Gain/Attenuator
Step Size3
+12 dB to −34.5 dB
1.0
1.5
2.0
dB
Output Attenuation Span
45.5
46.5
48
dB
Full-Scale Output Voltage
Tx Output
0 dBm
2.1
2.2
2.3
V p-p
Tx Pin Capacitance
15
pF
Tx Load Capacitance
100
pF


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