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參數(shù)資料
| 型號(hào)： | SA5214 |
| 廠商： | NXP Semiconductors N.V. |
| 英文描述： | Postamplifier with link status indicator |
| 中文描述： | 后置連接狀態(tài)指示燈與 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大小： | 83K |
| 代理商： | SA5214 |
Philips Semiconductors
Product specification
SA5214
Postamplifier with link status indicator
1998 Oct 07
7
NOTE:
The NE5211/NE5214 combination can operate at data rates in excess of 100Mb/s NRZ.
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1
2
3
4
5
6
7
8
9
10
11
12
13
14
LED
C
PKDET
THRESH
GND
A
FLAG
JAM
V
CCD
V
CCA
GND
D
TTL
OUT
IN
1B
IN
1A
C
AZP
C
AZN
OUT
1B
IN
2B
OUT
1A
IN
2A
R
HYST
R
PKDET
N
GND
GND
GND
OUT
GND
GND
OUT
V
CC
V
CC
NC
I
IN
NC
GND
GND
N
R2
220
D1
LED
C9
100pF
100pF
C7
.01
μ
F
47
μ
F
C1
C2
GND
+V
CC
0.1
μ
F
R4
5.1k
R3
47k
V
OUT
(TTL)
L3
10
μ
H
L2
10
μ
H
C11
C10
10
μ
F
.01
μ
F
.01
μ
F
C13
C12
10
μ
F
C8
L1
10
μ
H
BPF31
OPTICAL
INPUT
R1
100
C5
1.0
μ
F
C6
.01
μ
F
.01
μ
F
C4
10
F
C3
SD00353
Figure 5. A 50Mb/s Fiber Optic Receiver
THEORY OF OPERATION AND APPLICATION
INFORMATION
The SA5214 postamplifier system is a highly integrated chip that
provides up to 60dB of gain at 60MHz, to bring mV level signals up
to TTL levels.
The SA5214 contains eight amplifier blocks (see Block Diagram).
The main signal path is made up of a cascade of limiting stages: A1,
A2 and A8. The A3-A4-A7 path performs a wideband full-wave
rectification of the input signal with adjustable hysteresis and decay
times. It outputs a TTL HIGH on the “FLAG” output (Pin 5) when the
input is below a user adjustable threshold. An on-chip LED driver
turns the external LED to the ON state when the input signal is
above the threshold. In a typical application the “FLAG” output is tied
back to the “JAM” input; this forces the TTL data OUT into a LOW
state when no signal is present at the input.
An auto zero loop allows the SA5214 to be directly connected to a
transimpedance amplifier such as the SA5210, SA5211, or SA5212
without coupling capacitors. This auto-zero loop cancels the
transimpedance amplifier’s DC offset, the SA5214 A1 offset, and the
data-dependent offset in the PIN diode/transimpedance amplifier
combination. For more information on the SA5214 Theory of
Operation, please refer to paper titled “A Low Cost 100 MBaud
Fiber-Optic Receiver” by W. Mack et al.
A typical application of the SA5214 postamplifier is depicted in
Figure 5. The system uses the SA5211 transimpedance amplifier
which has a 28k differential transimpedance gain and a -3dB
bandwidth of 140MHz. This typical application is optimized for a 50
Mb/s Non Return to Zero (NRZ) bit stream.
As the system’s gain bandwidth product is very high, it is crucial to
employ good RF design and printed circuit board layout techniques
to prevent the system from becoming unstable.
For more information on this application, please refer to AB 1432.
Die Sales Disclaimer
Due to the limitations in testing high frequency and other parameters
at the die level, and the fact that die electrical characteristics may
shift after packaging, die electrical parameters are not specified and
die are not guaranteed to meet electrical characteristics (including
temperature range) as noted in this data sheet which is intended
only to specify electrical characteristics for a packaged device.
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| SA5214D | 制造商:PHILIPS 制造商全稱:NXP Semiconductors 功能描述:Postamplifier with link status indicator |
| SA5214D,602 | 功能描述:特殊用途放大器 POST AMP WITH LINK STATUS IND RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| SA5214D,623 | 功能描述:特殊用途放大器 POST AMP WITH LINK STATUS IND RoHS:否 制造商:Texas Instruments 通道數(shù)量:Single 共模抑制比（最小值）: 輸入補(bǔ)償電壓: 工作電源電壓:3 V to 5.5 V 電源電流:5 mA 最大功率耗散: 最大工作溫度:+ 70 C 最小工作溫度:- 40 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| SA5214D/01,112 | 制造商:NXP Semiconductors 功能描述:POST AMP W/LINK STATUS - Rail/Tube |
| SA5214D/01,118 | 制造商:NXP Semiconductors 功能描述:POST AMP W/LINK STATUS - Tape and Reel |
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