CX24109-11Z,557 NXP Semiconductors, CX24109-11Z,557 Datasheet - Page 22

• Manufacturer Part Number: CX24109-11Z,557
• Description: IC SATELLITE TUNER DGTL 48-ETQFP
• Manufacturer: NXP Semiconductors
• Type: Tunerr

Specifications of CX24109-11Z,557

• Applications: Set-Top Boxes, Video Players
• Mounting Type: Surface Mount
• Package / Case: 48-TQFP Exposed Pad, 48-eTQFP, 48-HTQFP, 48-VQFP
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 935287219557

NXP Semiconductors
1.7.2
1.7.3
Table 8.
Table 9.
Table 10.
CX24109_N_1
Product data sheet
FOOTNOTES:
(1)
(2)
Lower 50% VCO Frequency Range
Upper 50% of VCO Frequency Range
Charge Pump Polarity
Reference Divider
15 to 45 MSps
Symbol Rate
5 to 15 MSps
1 to 5 MSps
There is an interaction between the offset and slope settings in the RF block, so the actual settings will be different from the theoretical
setting. Theoretical settings are given in parentheses.
These values are for reference only. They are not programmable.
Recommended AGC Programming Values
Recommended VCO Frequency vs. Charge Pump Current
Recommended Charge Pump Polarity and Reference Divider Values
Frequency Equations
Recommended Default Values
VCA Slope
(dB/V)
VCO Frequency
59.5
52
57
Feature
The VCO frequency is determined by
Remember, the incoming receive frequency is always lower than the VCO frequency, such
that:
F
F
NOTE:
VCO
Receive
VCA and VGA Slope and Offset vs. Symbol Rate
=
= F
VCA Offset
(
=
(
(102.75)
10.111 R
(111.25)
(dB)
F
Crystal
(107)
98.5
98.5
98.5
VCO
(1)
If A = 0, then N = N + 1
÷
÷
÷
2
R
)
)
or F
×
×
Rev. 01 — 13 November 2008
VGA1 Slope
(
(
VCO
(dB/V)
N
N
+
+
26
26
26
(
(
÷
A 32
A 32
(2)
4
÷
÷
)
)
) 32
) 32
VGA1 Offset
×
×
(dB)
–30
–33
–36
×
×
2
2
Slope (dB/
Charge Pump Current
VGA2
V)
Specification
0
0
0
(2)
Chapter 1: Functional Description
Negative
2 mA
3 mA
÷10
VGA2 Offset
(dB)
29
17
14
CX24109
© NXP B.V. 2008. All rights reserved.
Condition
FILTUNE
Voltage
0.41
0.90
2.70
(V)
22