tda8262hn-c1 NXP Semiconductors, tda8262hn-c1 Datasheet - Page 13

• Manufacturer Part Number: tda8262hn-c1
• Description: Tda8262hn Fully Integrated Satellite Tuner
• Manufacturer: NXP Semiconductors

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