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參數(shù)資料
| 型號： | TDA6650ATT/C3 |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 消費家電 |
| 英文描述： | SPECIALTY CONSUMER CIRCUIT, PDSO38 |
| 封裝： | 4.40 MM, 0.50 MM PITCH, PLASTIC, MO-153, SOT510-1, TSSOP-38 |
| 文件頁數(shù)： | 35/54頁 |
| 文件大小： | 325K |
| 代理商： | TDA6650ATT/C3 |
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TDA6650ATT_6651ATT_2
NXP B.V. 2007. All rights reserved.
Product data sheet
Rev. 02 — 2 February 2007
40 of 54
NXP Semiconductors
TDA6650ATT; TDA6651ATT
5 V mixer/oscillator and low noise PLL synthesizer
The TDA6650ATT; TDA6651ATT PLL loop stability is guaranteed in the conguration of
the Figure 27 to Figure 30. In this conguration, the external supply source is 30 V
minimum, the pull-up resistor, R19 is 15 k
and all of the local oscillators are aligned to
operate at a maximum tuning voltage of 26 V. If the conguration is changed, there might
be an impact on the loop stability.
For any other congurations, a stability analysis must be performed. The conventional PLL
AC model used for the stability analysis, is valid provided the external source (DC supply
source or DC-to-DC converter) is able to deliver a minimum current that is equal to the
charge pump current in use.
The delivered current can be simply calculated with the following formula:
(1)
where:
Idelivered is the delivered current.
VDC is the supply source voltage or DC-to-DC converter output voltage.
VT is the tuning voltage.
Rpu is the pull-up resistor between the DC supply source (or the DC-to-DC converter
output) and the tuning line (R19 in Figure 27 to Figure 30).
ICP is the charge pump current in use.
I
delivered
V
DC
V
T
–
R
pu
------------------------
I
CP
>
=
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| TDA6650TT | 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) |
| TDA6650TT/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) |
| TDA6650TT/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) |
| TDA6651 | 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 | 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) |
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