TDA8261TW Philips Semiconductors, TDA8261TW Datasheet - Page 15

• Manufacturer Part Number: TDA8261TW
• Description: Satellite Zero-IF QPSK/8PSK downconverter with PLL synthesizer
• Manufacturer: Philips Semiconductors

Philips Semiconductors
APPLICATION INFORMATION
2004 Dec 02
handbook, full pagewidth
Satellite Zero-IF QPSK/8PSK
downconverter with PLL synthesizer
39 pF
5 V
5 V
5 V
5 V
C2
V AGC
RF IN
4MHz
X1
2.2 pF
2.2 pF
C10
C3
C38
39 pF
V CC(PLL)
QBBOUT
RFGND1
V CC(RF)
RFGND2
BBGND1
V CC(BB)
PLLGND
BIASN1
AGCIN
QBBIN
handbook, halfpage
QOUT
RFA
RFB
XT1
XT2
Z out
35
10
11
12
13
14
15
16
1
2
3
4
5
6
7
8
9
R0
Fig.11 Typical 36 MHz low-pass filter.
TDA8261TW
HEATSINK
33 pF
56
Fig.10 Typical application.
R2
C0
470 nH
82 pF
32
31
30
29
28
27
26
25
24
23
22
21
20
19
18
17
L1
LPF
C1
15
XTOUT
SDA
SCL
AS
CP
VT
BVS
V CC(VCO)
TKA
TKB
VCOGND
IOUT
BBGND2
IBBIN
BIASN2
IBBOUT
MBL858
680 nH
68 pF
L2
C3
33
12 nF
R3
C1
4 MHz
5 V
coupling
100 nF
5 V
L1
18 nH
C2
DC
330 pF
4.7 k
82 pF
82 pF
C21
C22
C2
R1
MBL856
Z in
R1
1 k
R4
4.7 k
D1
BB178
4.7 k
R5
TDA8261TW
R2
1.5 k
C3
330 pF
22 k
Product specification
R10
30 V