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參數(shù)資料
| 型號(hào)： | SA5222 |
| 廠商： | NXP Semiconductors N.V. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Low-Power FDDI Transimpedance Amplifier(低功耗FDDI互阻抗放大器) |
| 中文描述： | 低功耗FDDI的互阻抗放大器（低功耗FDDI的互阻抗放大器） |
| 文件頁(yè)數(shù)： | 4/12頁(yè) |
| 文件大?。?/td> | 270K |
| 代理商： | SA5222 |
Philips Semiconductors Data Communications Products
Applications Note
AN4003
Fiber optic receiver applications note
October 12, 1992
4
DATA IN
C1
C2
A1
+
–
A3
A6
DATA OUT
A4
D
IN
D
INB
R
IN
4.5k
C
AZ
R
AZ
250k
R
AZ
250k
D
OUT
D
OUTB
R
IN
4.5k
V
BIAS
ECL 100k
Figure 7. NE/SA5224 Forward Gain Path Including Auto-Zero
100
10
μ
H
10
μ
H
10
μ
H
0.1
μ
F
0.1
μ
F
BPF
31
J
X2
1
3
2
4
5
6
7
8
NE5222
4
1
2
5
16
7
10
9
12
13
8
14
6
Q1
Q2
LED
STATUS
OUT
+2V
REFERENCE
LIMILIM
AMP
AMP
ECL
BUFFER
+2V
Figure 8. 125Mb/s Fiber Optic Test Board for Ground Referenced ECL
LOW
SIGNAL
130
130
36
10k
10k
5
5
10
ST
ST
+
–
V
OUT
V
CC2
V
CC1
R
TR
V
OUT
GND
2
GND
1
0.1
μ
F
1k
50
0.1
μ
F
C
AZ
V
R
V
SET
V
CCA
i
λ
NE/SA5224
ANALOG GROUND
DIGITAL GROUND
–3.2V
–3.2V
+5V
V
CCA
–3.2V
10
μ
H
3
11
ST
ST
ECL
POSTAMPLIFIER
ECL
750mV
0
D
OUT
D
OUT
C
F
R
1
R
2
The Auto-Zero Loop
The auto-zero circuit provides closed loop feedback inside the
NE/SA5224 which cancels the offset voltage of the forward signal
path (Figure 7).
Essentially, the auto-zero circuit acts to cancel bias errors at the
comparator due to component offsets and the data’s average DC
bias. The circuit is capable of cancelling the offset effect of long
strings of zeros in transmission preventing a drift to a false output
logic level.
The C
AZ
capacitor is determined according to the relationship
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| SA5223 | Wide Dynamic Range AGC Transimpedance Amplifier (150MHz)(寬動(dòng)態(tài)范圍AGC互阻抗放大器(150MHz)) |
| SA5223D | Wide dynamic range AGC transimpedance amplifier 150MHz |
| SA5230FE | Low Voltage Operational Amplifier |
| SA5230 | Low voltage operational amplifier(低壓運(yùn)算放大器) |
| SA5230D | Low Voltage Operational Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA5222D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Low-power FDDI transimpedance amplifier |
| SA5223 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Wide dynamic range AGC transimpedance amplifier 150MHz |
| SA5223D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Wide dynamic range AGC transimpedance amplifier 150MHz |
| SA5224 | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FDDI fiber optic postamplifier |
| SA5224D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:FDDI fiber optic postamplifier |
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