LE58QL063HVC Zarlink, LE58QL063HVC Datasheet - Page 19

• Manufacturer Part Number: LE58QL063HVC
• Description: SLIC 4-CH 3.3V 64-Pin LQFP Tray
• Manufacturer: Zarlink

Specifications of LE58QL063HVC

• Package: 64LQFP
• Number Of Channels Per Chip: 4
• Polarity Reversal: Yes
• Minimum Operating Supply Voltage: 3.135 V
• Typical Operating Supply Voltage: 3.3 V

Discrimination Against Out-of-Band Input Signals
When an out-of-band sine wave signal of frequency f, and level A is applied to the analog input, there may be frequency
components below 4 kHz at the digital output which are caused by the out-of-band signal. These components are at least the
specified dB level below the level of a signal at the same output originating from a 1014 Hz sine wave signal with a level of A
dBm0 also applied to the analog input. The minimum specifications are shown in the following table.
Note:
The attenuation of the waveform below amplitude A, between 3400 Hz and 4600 Hz, is given by the formula:
Discrimination Against 12- and 16-kHz Metering Signals
If the QLSLAC device is used in a metering application where 12 kHz or 16 kHz tone bursts are injected onto the telephone line
toward the subscriber, a portion of these tones also may appear at the VIN terminal. These out-of-band signals may cause
frequency components to appear below 4 kHz at the digital output. For a 12 kHz or 16 kHz tone, the frequency components below
4 kHz are reduced from the input by at least 70 dB. The sum of the peak metering and signal voltages must be within the analog
input voltage range.
Spurious Out-of-Band Signals at the Analog Output
With PCM code words representing a sine wave signal in the range of 300 Hz to 3400 Hz at a level of 0 dBm0 applied to the
digital input, the level of the spurious out-of-band signals at the analog output is less than the limits shown below.
Frequency of Out-of-Band Signal
3400 Hz < f < 4600 Hz
4600 Hz < f < 100 kHz
16.6 Hz < f < 45 Hz
65 Hz < f < 100 Hz
45 Hz < f < 65 Hz
Level below
A (dB)
40 kHz to 240 kHz
4.6 kHz to 40 kHz
240 kHz to 1 MHz
Frequency
Figure 7. Discrimination Against Out-of-Band Signals
-10
-20
-30
-40
-50
0
Attenuation (db)
3.4
Zarlink Semiconductor Inc.
Amplitude of Out-of-Band Signal
4.0
Frequency (kHz)
=
–25 dBm0 < A ≤ 0 dBm0
–25 dBm0 < A ≤ 0 dBm0
–25 dBm0 < A ≤ 0 dBm0
–25 dBm0 < A ≤ 0 dBm0
–25 dBm0 < A ≤ 0 dBm0
14 14
19
–
sin
4.6


π 4000 f –
---------------------------- -
(
1200
)


–32 dBm0
–46 dBm0
–36 dBm0
Level
-28 dB
-32 dB
Level below A
see Figure 7
18 dB
25 dB
10 dB
32 dB