MTC20154-TQ-C2 ST Microelectronics, Inc., MTC20154-TQ-C2 Datasheet - Page 12

• Manufacturer Part Number: MTC20154-TQ-C2
• Description: Integrated Adsl CMOS Analog Front-end Circuit
• Manufacturer: ST Microelectronics, Inc.

MTC20154
Table 10. LNA characteristics
RX Filters
The combination of the external filter (an LC ladder filter typically) with the integrated lowpass filter pro-
vides:
– echo reduction to improve dynamic range
– DMT sidelobe and out of band (anti-aliasing) attenuation.
– Anti alias filter (60 dB rejection @ image freq.)
ATU-R-RX filters
The integrated filter characteristics are shown in table 6.
ATU-C-RX Filter
This filter is the same as the one used for ATU-R_TX.
Linearity of RX
Linearity of the RX analog path is defined by the IM3 product of two sinusoidal signals with frequencies f1
and f2 and each with 0.5 Vpd amplitude (total _1 Vpd) at the output of the RX-AGC amplifier (i.e: before
the ADC) for the case of minimal AGC setting.
Table 11. Integrated filter characteristics ATU-R-RX
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Input common mode voltage
Input differential voltage
Maximum peak input differential voltage
Output common mode voltage
Maximum peak output differential voltage
Amplification step
Amplification range
Input refered noise at max gain,
min atten. (over a 36 kHz to 1.1 MHz band)
Power consumption
Digital interface
Digital code
Type
Cut-off frequency
Max. in-band ripple
Data
Description
–
–
–
–
–
0.7
0
5.5
–
–
’00000’
–> 0 dB
amplification
Min
4th order butterworth
1.104 MHz (f0)
0-2 dB
AVDD/2
1
1
AVDD/2
1
1
–
6.5
32
5
’11111’
–> +31 dB
amplification
Typical
Value/Units
–
–
–
–
–
1.3
+31
8
–
–
Max
V
Vpdiff
Vpdiff
V
Vpdiff
dB
dB
nV/√Hz
mW
bits
Unity