TDA8261TW Datasheet, PDF (16/22 Pages) NXP Semiconductors – Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer

Philips Semiconductors
Satellite Zero-IF QPSK/8PSK
downconverter with PLL synthesizer
Product specification
TDA8261TW
andbook, full pagewidth
INPUT
MATCHING
12
LNA ^RFA 9
21
AGCIN
14 5
32
4 MHz clock
TDA8261TW
19
1
4 MHz
2
17 ^IBBOUT
I
16 ^QBBOUT
Q
I²C-bus
PWM
TDA10086
MPEG2 TS
I²C-bus
MBL857
Fig.12 Tuner configuration with a TDA8261TW.
Application design
The performance of the application using the TDA8261TW
strongly depends on the application design itself.
Furthermore the printed-circuit board design and the
soldering conditions should take into account the exposed
die pad underneath the device, as this requires an
optimum electrical ground path for electrical performance,
together with the capability to dissipate into the application
the heat created in the device. Philips Semiconductors can
provide support through reference designs and application
notes for TDA8261TW together with associated channel
decoders. Please contact your local Philips
Semiconductors sales office for more information.
Wave soldering is not suitable for the TDA8261TW
package. This is because the heatsink needs to be
soldered to the printed-circuit board underneath the
package but with wave soldering the solder cannot
penetrate between the printed-circuit board and the
heatsink.
2004 Dec 02
16