參數(shù)資料
型號(hào)： TDA6651
廠商： 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)： 12/55頁(yè)
文件大?。?/td> 377K
代理商： TDA6651
2004 Mar 22
12
Philips Semiconductors
Product specification
5 V mixer/oscillator and low noise PLL synthesizer
for hybrid terrestrial tuner (digital and analog)
TDA6650TT;
TDA6651TT
8.1.4
AGC
DETECTOR SETTING
The AGC take-over point can be selected out of 6 levels according to Table 8.
Table 8
AGC programming
Notes
1.
The AGC current sources are disabled. The AGC output goes into a high-impedance state and an external AGC
source can be connected in parallel and will not be influenced.
The AGC detector is disabled and I
AGC
= 9
μ
A.
2.
8.1.5
C
HARGE PUMP CURRENT SETTING
The charge pump current can be chosen from 8 values depending on the value of bits CP2, CP1 and CP0 bits; see
Table 9. The programming of the CP bits are not taken into account when ALBC mode is in use.
Table 9
Charge pump current
AL2
AL1
AL0
TYPICAL TAKE-OVER POINT LEVEL
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
124 dB
μ
V (p-p)
121 dB
μ
V (p-p)
118 dB
μ
V (p-p)
115 dB
μ
V (p-p)
112 dB
μ
V (p-p)
109 dB
μ
V (p-p)
I
AGC
= 0; note 1
V
AGC
= 3.5 V; note 2
CP2
CP1
CP0
CHARGE PUMP CURRENT
NUMBER
TYPICAL CURRENT
(ABSOLUTE VALUE IN
μ
A)
38
54
83
122
163
254
400
580
0
0
0
0
1
1
1
1
0
0
1
1
0
0
1
1
0
1
0
1
0
1
0
1
1
2
3
4
5
6
7
8
8.1.6
A
UTOMATIC
L
OOP
B
ANDWIDTH
C
ONTROL
(ALBC)
In a PLL controlled VCO in which the PLL reduces phase
noise close to the carrier, there is an optimum loop
bandwidth corresponding to the minimum integrated
phase jitter. This loop bandwidth depends on different
parameters like the VCO slope, the loop filter components,
the dividing ratio and the gain of the phase detector and
charge pump.
In order to reach the best phase noise performance it is
necessary, especially in a wide band system like a digital
tuner, to set the charge pump current to different values
depending on the band and frequency used. This is to
copewith thevariationsof thedifferentparameters thatset
the bandwidth. The selection can be done in the
applicationandrequiresforeachfrequencytoprogramnot
only the divider ratios, but also the band and the best
charge pump current.
The TDA6650TT; TDA6651TT includes the ALBC feature
that automatically sets the band and the charge pump
current, provided the IC is used in the DVB-T standard
相關(guān)PDF資料
PDF描述
TDA6651TT 5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6800 Video modulator circuit
TDA6800T Video modulator circuit
TDA7056 3 W mono BTL audio output amplifier(3W單聲道BTL音頻輸出放大器)
TDA7057Q 2 x 8W stereo BTL audio output amplifier with DC volume control(帶DC音量控制的2x8W立體聲BTL音頻輸出放大器)
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
TDA6651ATT 制造商:PHILIPS 制造商全稱: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:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651ATT/C3/S2 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651ATT/C3/S3 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
TDA6651TT 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:5 V mixer/oscillator and low noise PLL synthesizer for hybrid terrestrial tuner (digital and analog)
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*