LE58QL061BVC Zarlink, LE58QL061BVC Datasheet - Page 20

• Manufacturer Part Number: LE58QL061BVC
• Description: QUAD, SLAC, PROG CODEC, 3.3V, GCI, 20 I/0, PQT44, LEAD FREE
• Manufacturer: Zarlink

With code words representing any sine wave signal in the range 3.4 kHz to 4.0 kHz at a level of 0 dBm0 applied to the digital
input, the level of the signals at the analog output are below the limits in Figure 8. The amplitude of the spurious out-of-band
signals between 3400 Hz and 4600 Hz is given by the formula:
Overload Compression
Figure 9 shows the acceptable region of operation for input signal levels above the reference input power (0 dBm0). The
conditions for this figure are:
1.
2.
3.
4.
1.2 dB < GX ≤ + 12 dB
Digital voice output connected to digital voice input.
Measurement analog-to-analog.
–12 dB ≤ GR < –1.2 dB
Level (dBm0)
Output Power
Fundamental
(dBm0)
Figure 9. Analog-to-Analog Overload Compression
-10
-20
-30
-40
-50
0
2.6
Figure 8. Spurious Out-of-Band Signals
Level
9
8
7
6
5
3
2
1
4
3.4
=
1
Zarlink Semiconductor Inc.
–
14
Fundamental Input Power (dBm0)
2
–
4.0
Frequency (kHz)
14
sin
20
3


π f 4000
---------------------------- -
(
4
1200
–
4.6
5
)


Acceptable
6
Region
dBm0
7
8
-28 dBm0
-32 dBm0
9