AccessRunner ADSL-USB Modem Device Set Data Sheet
3.3.2
CX20431 AFE Electrical and Environmental Specifications
CX20431 AFE DC electrical characteristics are listed Table 3-15.
CX20431 AFE analog electrical characteristics are listed Table 3-16.
CX20431 AFE operating conditions are specified in Table 3-17.
CX20431 AFE absolute maximum ratings are stated in Table 3-18.
CX20431 AFE power consumption is listed in Table 3-19.
Table 3-15. CX20431 AFE DC Electrical Characteristics
Parameter
Input high voltage
Symbol
Min.
Typ.
Max.
Units
Test Conditions
(see Note 1)
VIH
VIL
IIL
0.65*VDD
-0.35
VDD+0.35
0.25*VDD
10
VDC
VDC
µA
VDC
VDC
µA
Input low voltage
Input leakage current
Output high voltage
Output low voltage
Output leakage current
-10
VOH
VOL
IOLK
0.85*VDD
VDD
0.1*VDD
10
0
10
NOTES:
1. Test Conditions (unless otherwise stated):
DVDD and AVDD = +5.0 ± 0.25 VDC
V
= +5.25V
IN (MAX)
2. Current flow out of the device is shown as minus.
Table 3-16. CX20431 AFE Analog Electrical Characteristics
Parameter
Min
Typ
Max
Units
Receive Path
Differential input amplitude of in-band signal
Differential input amplitude of echo
Input-referred noise density in 170 kHz – 1104 kHz, gain = 27 dB
Input-referred noise density in 170 kHz – 1104 kHz, gain = 0 dB
Intermodulation product falling in the downstream band, from an echo tone
with an in band signal, gain = 27 dB
2
2.1
20
Vp
Vp
15
150
-80
nV/sqrt (Hz)
nV/sqrt (Hz)
dBFS
Intermodulation product falling in the downstream band, from 2 in band tones,
gain = 0 dB
In-band ripple
Input resistance (single-ended)
Input capacitance (single-ended)
-80
1.5
dBFS
dB
kΩ
pF
85
90
Transmit Path
Differential output amplitude
Output-referred noise density in 25 kHz – 132 kHz
Output-referred noise density in 170 kHz – 1104 kHz
Intermodulation product from 2 in band tones
In-band ripple
2
250
20
-80
1.25
20
Vp
nV/sqrt (Hz)
nV/sqrt (Hz)
dBV
300
dB
Output resistive load (single-ended)
5
kΩ
Output capacitive load (single-ended)
20
pF
3-22
Conexant
100427B
CONEXANT [ CONEXANT SYSTEMS, INC ]
