參數(shù)資料
型號(hào)： TDA6650TT
廠(chǎng)商： NXP Semiconductors N.V.
英文描述： 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
中文描述： 5伏混頻器/振蕩器，低噪聲的混合型地面調(diào)諧器鎖相環(huán)頻率合成器（數(shù)字和模擬）
文件頁(yè)數(shù)： 7/55頁(yè)
文件大?。?/td> 377K
代理商： TDA6650TT
2004 Mar 22
7
Philips Semiconductors
Product specification
5 V mixer/oscillator and low noise PLL synthesizer
for hybrid terrestrial tuner (digital and analog)
TDA6650TT;
TDA6651TT
handbook, halfpage
TDA6650TT
FCE724
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
16
17
18
HBIN1
HBIN2
MBIN
LBIN
RFGND
IFFIL1
IFFIL2
BS4
AGC
BS3
BS2
BS1
BVS
ADC/BS5
SCL
SDA
AS
XTOUT
LOSCIN
LOSCOUT
OSCGND
MOSCIN2
MOSCIN1
HOSCIN2
HOSCOUT2
HOSCOUT1
HOSCIN1
IFGND
IFOUTA
IFOUTB
VCCA
PLLGND
VCCD
CP
VT
n.c.
23
22
21
20 XTAL2
19
XTAL1
Fig.2 Pin configuration TDA6650TT.
handbook, halfpage
TDA6651TT
FCE874
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
38
37
36
35
34
33
32
31
30
29
28
27
26
25
24
16
17
18
RFGND
BS4
AGC
BS3
BS2
BS1
BVS
ADC/BS5
SCL
SDA
AS
XTOUT
OSCGND
IFGND
IFOUTA
IFOUTB
PLLGND
CP
VT
23
22
21
20
XTAL2 19
XTAL1
HBIN1
HBIN2
MBIN
LBIN
IFFIL1
IFFIL2
LOSCIN
LOSCOUT
MOSCIN2
MOSCIN1
HOSCIN2
HOSCIN1
HOSCOUT2
HOSCOUT1
VCCA
VCCD
n.c.
Fig.3 Pin configuration TDA6651TT.
7
FUNCTIONAL DESCRIPTION
7.1
Mixer, Oscillator and PLL (MOPLL) functions
Bit BS1 enables the BS1 port, the low band mixer and the
low band oscillator. Bit BS2 enables the BS2 port, the mid
band mixer and the mid band oscillator. When both BS1
and BS2 bits are logic 0, the high band mixer and the high
band oscillator are enabled.
The oscillator signal is applied to the fractional-N
programmable divider. The divided signal f
div
is fed to the
phase comparator where it is compared in both phase and
frequency with the comparison frequency f
comp
. This
frequency is derived from the signal present on the crystal
oscillator f
xtal
and divided in the reference divider. There is
a fractional calculator on the chip that generates the data
for the fractional divider as well as the reference divider
ratio, depending on the step frequency selected. The
crystal oscillator requires a 4 MHz crystal in series with an
18 pF capacitor between pins XTAL1 and XTAL2.
The output of the phase comparator drives the charge
pump and the loop amplifier section. This amplifier has an
on-chip high voltage drive transistor. Pin CP is the output
of the charge pump, and pin VT is the pin to drive the
tuning voltage to the varicap diodes of the oscillators and
the tracking filters. The loop filter has to be connected
between pins CP and VT. The spurious signals introduced
by the fractional divider are automatically compensated by
the spurious compensation block.
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相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA6650TT/C3 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6650TT/C3/S2 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651ATT 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651ATT/C3 制造商:PHILIPS 制造商全稱(chēng):NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
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