- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄372107 > SA624D (NXP SEMICONDUCTORS) High performance low power FM IF system with high-speed RSSI PDF資料下載
參數(shù)資料
| 型號： | SA624D |
| 廠商： | NXP SEMICONDUCTORS |
| 元件分類： | 接收器 |
| 英文描述： | High performance low power FM IF system with high-speed RSSI |
| 中文描述： | FM, AUDIO DEMODULATOR, PDSO16 |
| 封裝： | 3.90 MM, PLASTIC, SOT-109-1, MS-012AC, SO-16 |
| 文件頁數(shù)： | 8/15頁 |
| 文件大?。?/td> | 161K |
| 代理商： | SA624D |
Philips Semiconductors
Product specification
SA624
High performance low power FM IF system with
high-speed RSSI
1997 Nov 07
8
11
12
10
40k
80k
8
40k
V+
9
42k
SR00446
Figure 7. Second Limiter and Quadrature Detector
BPF
BPF
SR00447
Figure 8. Feedback Paths
a. Terminating High Impedance Filters with Transformation to Low Impedance
b. Low Impedance Termination and Gain Reduction
BPF
HIGH IMPEDANCE
LOW IMPEDANCE
HIGH IMPEDANCE
BPF
BPF
RESISTIVE LOSS INTO BPF
BPF
A
SR00448
Figure 9. Practical Termination
16
15
14
13
12
11
10
9
8
7
6
5
4
3
2
1
NE 624
430
430
SR00449
Figure 10. Crystal Input Filter with Ceramic Interstage Filter
forms a divider from the output of the limiters back to the inputs
(including RF input). If this feedback divider does not cause
attenuation greater than the gain of the forward path, then oscillation
or low level regeneration is likely. If regeneration occurs, two
symptoms may be present: (1)The RSSI output will be high with no
signal input (should nominally be 250mV or lower), and (2) the
demodulated output will demonstrate a threshold. Above a certain
input level, the limited signal will begin to dominate the regeneration,
and the demodulator will begin to operate in a “normal” manner.
There are three primary ways to deal with regeneration: (1)
Minimize the feedback by gain stage isolation, (2) lower the stage
input impedances, thus increasing the feedback attenuation factor,
and (3) reduce the gain. Gain reduction can effectively be
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA624 | High performance low power FM IF system with high-speed RSSI |
| SA626D | ECONOLINE: RB & RA - Dual Output from a Single Input Rail- Power Sharing on Output- Industry Standard Pinout- 1kVDC & 2kVDC Isolation- Custom Solutions Available- UL94V-0 Package Material- Efficiency to 85% |
| SA626DK | Low voltage high performance mixer FM IF system with high-speed RSSI |
| SA626 | Low voltage high performance mixer FM IF system with high-speed RSSI |
| SA630N | Single pole double throw SPDT switch |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA625 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High performance low power mixer FM IF system with high-speed RSSI |
| SA625DK | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:High performance low power mixer FM IF system with high-speed RSSI |
| SA626 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage high performance mixer FM IF system with high-speed RSSI |
| SA626A | 功能描述:MODULE SKT ADAPTER 20DIP/SSOP RoHS:否 類別:編程器，開發(fā)系統(tǒng) >> 適配器 系列:* 標(biāo)準(zhǔn)包裝:96 系列:- 模塊/板類型:TQFP 插座模塊 適用于相關(guān)產(chǎn)品:- |
| SA626D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low voltage high performance mixer FM IF system with high-speed RSSI |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。