TDA8262HN Datasheet, PDF (13/30 Pages) NXP Semiconductors – Fully integrated satellite tuner

Philips Semiconductors
TDA8262HN
Fully integrated satellite tuner
Table 14: RX baseband cut-off frequency control; bits FC[4:0]: …continued
The register selects the cut-off frequency of the RX baseband filter. The cut-off frequency can be set
from 5 MHz to 36 MHz in 32 steps of 1 MHz
FC4
FC3
FC2
FC1
FC0 Decimal Baseband cut-off
frequency (MHz) ^[1]
1
1
1
0
1
29
34
1
1
1
1
0
30
35
1
1
1
1
1
31
36
[1] Typical values at nominal process and room temperature.
Table 15: RX baseband gain control; bits BBGAIN[3:0]
These bits control the additional gain of the baseband between 0 dB and 9dB
BBGAIN3 BBGAIN2 BBGAIN1 BBGAIN0 Decimal Additional gain in dB ^[1]
0
0
0
0
0
0
0
0
0
1
1
0
0
0
1
0
2
0
0
0
1
1
3
0
0
1
0
0
4
0
0
1
0
1
5
1.6
0
1
1
0
6
3
0
1
1
1
7
4.6
1
0
0
0
8
6.3
1
0
0
1
9
7.3
1
0
1
0
10
8.2
1
0
1
1
11
8.5
1
1
0
0
12
8.8
1
1
0
1
13
8.8
1
1
1
0
14
9
1
1
1
1
15
9
[1] Typical values at nominal process and room temperature.
Table 16: 20 dB RF attenuation control; bit RFATT
This bit controls the RF attenuation inside the LNA amplifier.
RFATT
Action
0
normal gain of RF path
1
20 dB attenuation. When active, the LNA works in attenuation (−8 dB
gain). The loop-through signal is also attenuated by 20 dB.
Table 17: Select main loop charge-pump current; bit CPCURSEL
CPCURSEL
Action
0
low charge-pump current
1
high charge-pump current
9397 750 13194
Product data sheet
Rev. 01 — 14 December 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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