TDA8263HN Datasheet, PDF (12/28 Pages) NXP Semiconductors – Fully integrated satellite tuner

Philips Semiconductors
TDA8263HN
Fully integrated satellite tuner
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).
Table 17: Select main loop charge-pump current; bit CPCURSEL
CPCURSEL
Action
0
low charge-pump current
1
high charge-pump current
Table 18: Main loop charge pump test; bits CPTST, FUP and FDN
These bits force the inputs of the main loop charge pump. Thus the current and leakage
measurement could be done. This test could be used also to force the LC VCO at its maximum or
minimum tuning voltage.
CPTST
FUP
FDN Actions
0
X
X
test disable
1
0
0
sink and source off; leakage measurement
1
0
1
sink off and source on; source measurement
1
1
0
sink on and source off; sink measurement
1
1
1
sink on and source on
9397 750 13193
Product data sheet
Rev. 01 — 14 December 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
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