LE58QL021BVC Zarlink, LE58QL021BVC Datasheet - Page 20

• Manufacturer Part Number: LE58QL021BVC
• Description: QUAD, SLAC, PROG CODEC, 3.3V, 20 I/0, PQT44, LEAD FREE
• Manufacturer: Zarlink

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.
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
signals between 3400 Hz and 4600 Hz is given by the formula:
Level (dBm0)
40 kHz to 240 kHz
4.6 kHz to 40 kHz
240 kHz to 1 MHz
Frequency
-10
-20
-30
-40
-50
0
Figure 12. Spurious Out-of-Band Signals
Level
=
3.4
Zarlink Semiconductor Inc.
–
14
–
14
4.0
Frequency (kHz)
sin
20


π f 4000
---------------------------- -
(
1200
–
4.6
Figure
)


dBm0
12. The amplitude of the spurious out-of-band
–32 dBm0
–46 dBm0
–36 dBm0
Level
-28 dBm0
-32 dBm0