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參數(shù)資料
| 型號： | MC44BS373CAFCR2 |
| 廠商： | Freescale Semiconductor |
| 文件頁數(shù)： | 20/52頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC MODULATOR AUD/VID U/V 20-QFN |
| 標(biāo)準(zhǔn)包裝： | 2,500 |
| 類型： | NTSC/PAL 調(diào)制器 |
| 應(yīng)用： | 音頻/視頻，VCR，機頂盒 |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 20-VQFN 裸露焊盤 |
| 供應(yīng)商設(shè)備封裝： | 20-QFN 裸露焊盤（5x5） |
| 包裝： | 帶卷 (TR) |
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MC44BS373CA Data Sheet
High Speed I2C Compatible Bus
Figure 10. PLL Loop Filter
Loop filter equation:
ωo = 3-dB cutoff frequency
Kpd = 1-
A phase detector current
Kosc = 5 MHz/V sound oscillator slope. (In fact, Kosc = 40 MHz/prescaler divider = 8.) This
provides 5 MHz/V.
N = Sound divider ratio
Q = quality factorvR
C2, added to minimize glitches, is usually set to one tenth the size of C1. For example:
Fref = 31.25 kHz
→ N = 5.5 MHz / 31.25 kHz = 176
Assuming C1 = 1
F, then
ωo = 168 rad, and Fo = 27 Hz
Q depends on the desired frequency response. Choosing Q = 0.7 as a starting point, then R = 8.5 K
. The
resistance acts directly on the factor quality and can be adjusted to create a peak on the low-frequency range.
It is recommended that the value of R be adjusted experimentally depending on the application and
requirements.
16 High Speed I2C Compatible Bus
16.1 Specification Conditions
Each of the characteristics listed in Table 27 and Table 28 is classified as one of the following types:
A—100% tested
B—100% correlation tested
C—Characterized on samples
D—Design parameter
See Section 14, “Characterization Measurement Conditions,” for each C-type parameter.
Unless otherwise specified, VCC = 5.0 V, TA = 25°C.
C2
C1
R
ωo
Kpd
Kosc
×
NC1
×
------------------------------
=
Q
1
RC1
×
ωo
×
-------------------------------
=
with
,,
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MC44BS373CAR2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator |
| MC44BS373CR2 | 制造商:MOTOROLA 制造商全稱:Motorola, Inc 功能描述:PLL-Tuned UHF and VHF Audio/Video High-Integration Modulator |
| MC44BS374 | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:MC44BS374 |
| MC44BS374CA | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:SO16NB Package |
| MC44BS374CAD | 制造商:FREESCALE 制造商全稱:Freescale Semiconductor, Inc 功能描述:CMOS Audio/Video RF Modulators |
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