TDA8263HN View Datasheet(PDF) - Philips Electronics
Part Name
Description
View to exact match
TDA8263HN Datasheet PDF : 28 Pages
| |||
Philips Semiconductors
TDA8263HN
Fully integrated satellite tuner
Table 3: Pin description …continued
Symbol
Pin
Description
VCC(VCO)
19
VCO supply voltage
VT
20
VCO tuning voltage input
GND(VCO)
21
VCO ground
CP
22
charge pump output
VCC(PLL)
23
GND(PLL)
24
PLL supply voltage
PLL ground
XTOUT
25
16 MHz frequency for external ICs output
XT
26
16 MHz crystal oscillator input
XTN
27
16 MHz crystal oscillator input
VCC(DIG)
SDA
28
digital supply voltage
29
I2C-bus data input/output
SCL
30
I2C-bus clock input
GND(DIG)
31
digital ground
PORT1
32
pull-down port 1
9. Tuner configuration
RF
input
16 MHz
TDA8263
Fig 3. Tuner configuration
I/Q base band
AGC control
16 MHz
I 2 C-bus
TDA10086
MPEG2 stream
I 2 C-bus
001aaa975
10. Functional description
The TDA8263HN contains the core of the RF analog part of a digital satellite receiver. The
signal coming from the LNB is coupled to the RF inputs. The internal circuitry performs the
Zero-IF quadrature frequency conversion and two in-phase (IP/IN) and two quadrature
(QP/QN) output signals can directly be used to feed a Satellite Demodulator and Decoder
circuit (SDD). Low-pass filter cut-off frequency can be adjusted from 5 MHz to 36 MHz in
32 steps. This allows a large flexibility in the SDD input. 10 gain values are present at
output amplifier to compensate cut-off frequency adjustment and single output
application.
The IC gain controlled amplifier before the mixer is controlled by the SDD through pin
AGC.
An input level detector gives the wide band RF level. This information is available through
I2C-bus in read mode.
9397 750 13193
Product data sheet
Rev. 01 — 14 December 2004
© Koninklijke Philips Electronics N.V. 2004. All rights reserved.
6 of 28
|
|
Share Link: 