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參數(shù)資料
| 型號(hào)： | MAX3271E |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | +3.3V, 2.5Gbps Low-Power Transimpedance Amplifier |
| 中文描述： | 3.3伏，2.5Gbps的低功耗阻放大器 |
| 文件頁數(shù)： | 7/8頁 |
| 文件大?。?/td> | 558K |
| 代理商： | MAX3271E |
Optical Linear Range
The MAX3271 has high gain, which limits the output
when the input signal exceeds 40μAp-p. The MAX3271
operates in a linear range for inputs not exceeding:
Layout Considerations
Noise performance and bandwidth will be adversely
affected by capacitance at the IN pin. Minimize capaci-
tance on this pin and select a low-capacitance photodi-
ode. Assembling the MAX3271 in die form using chip
and wire technology provides the best possible perform-
ance. Figure 5 shows a suggested layout for a TO
header.
Photodiode Filter
Supply voltage noise at the cathode of the photodiode
produces a current I = C
PD
V/
t, which reduces the
receiver sensitivity (C
PD
is the photodiode capaci-
tance.) The filter resistor of the MAX3271, combined
with an external capacitor, can be used to reduce this
noise (see the
Typical Application Circuit
). Current gen-
erated by supply noise voltage is divided between
C
FILTER
and C
PD
. The input noise current due to supply
noise is (assuming the filter capacitor is much larger
than the photodiode capacitance):
I
NOISE
= (V
NOISE
)(C
PD
) / (R
FILTER
)(C
FILTER
)
If the amount of tolerable noise is known, the filter
capacitor can be easily selected:
C
FILTER
= (V
NOISE
)(C
PD
) / (R
FILTER
)(I
NOISE
)
For example, with maximum noise voltage = 100mVp-p,
C
PD
= 0.85pF, R
FILTER
= 750
, and I
NOISE
selected to
be 250nA (1/2 of the MAX3271
’
s input noise):
C
FILTER
= (100mV)(0.85pF) / (750
)(250nA) = 450pF
Wire Bonding
For high-current density and reliable operation, the
MAX3271 uses gold metalization. Connections to the
die should be made with gold wire only, using ball-
bonding techniques. Wedge bonding is not recom-
mended. Die thickness is typically 15mils (0.375mm).
Linear Range
A r
(
r
dBm
e
e
=
+
1
(
)
)
10
40
1
2
1000
log
μ
ρ
M
+3.3V, 2.5Gbps Low-Power
Transimpedance Amplifier
_______________________________________________________________________________________
7
PARAMETER
Average Power
Extinction Ratio
SYMBOL
P
AVG
r
e
RELATION
P
AVG
= (P0 + P1) / 2
r
e
= P1/P0
Optical Power
of a 1
P1
P1 = 2P
AVG
(r
e
) / (r
e
+ 1)
Optical Power
of a 0
P0
P0 = 2P
AVG
/ (r
e
+ 1)
Signal Amplitude
P
IN
P
IN
= P1 - P0
= 2P
AVG
(r
e
- 1) /
(r
e
+ 1)
Table 1. Optical Power Relations
CASE IS GROUND
TOP VIEW OF TO-56 HEADER
C
FILTER
V
CC
PHOTODIODE
MAX3271
OUT+
OUT-
Figure 5. Suggested Layout for TO-56 Header
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3271W | +3.3V, 2.5Gbps Low-Power Transimpedance Amplifier |
| MAX3280EAUK-T | Circular Connector; No. of Contacts:2; Series:; Body Material:Aluminum Alloy; Connecting Termination:Solder; Connector Shell Size:10SL; Circular Contact Gender:Socket; Circular Shell Style:Straight Plug; Insert Arrangement:10SL-4 RoHS Compliant: No |
| MAX3280 | 【15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers |
| MAX3281EAUT-T | 【15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers |
| MAX3284EAUT-T | 【15kV ESD-Protected 52Mbps, 3V to 5.5V, SOT23 RS-485/RS-422 True Fail-Safe Receivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3271E/D | 功能描述:模擬開關(guān) IC RoHS:否 制造商:Texas Instruments 開關(guān)數(shù)量:2 開關(guān)配置:SPDT 開啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開啟時(shí)間（最大值）: 關(guān)閉時(shí)間（最大值）: 工作電源電壓:2.7 V to 4.5 V 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:DSBGA-16 |
| MAX3271E/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX3271EVKIT | 功能描述:交換機(jī) IC 開發(fā)工具 RoHS:否 制造商:Maxim Integrated 產(chǎn)品:Evaluation Kits 類型:USB Power Switches 工具用于評(píng)估:MAX4984E 工作電源電壓:2.8 V to 5.5 V |
| MAX3272AEGP | 功能描述:限幅放大器 3.3V 2.5Gbps Limiting Amplifier RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
| MAX3272AEGP-T | 功能描述:限幅放大器 3.3V 2.5Gbps Limiting Amplifier RoHS:否 制造商:Micrel 輸入電壓范圍（最大值）:3.6 V 工作電源電壓:3.3 V 電源電流:40 mA 工作溫度范圍:- 40 C to + 85 C 封裝 / 箱體:MSOP-10 封裝:Tube |
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