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參數(shù)資料
| 型號： | MAX3266 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 32-Bit Digital Signal Controller with Flash 100-BGA MICROSTAR -40 to 125 |
| 中文描述： | 1.25Gbps/2.5Gbps、+3V至+5.5V、低噪聲互阻前置放大器，用于LAN |
| 文件頁數(shù)： | 5/8頁 |
| 文件大小： | 152K |
| 代理商： | MAX3266 |
M
1.25Gbps/2.5Gbps, 3V to 5.5V, Low-Noise
Transimpedanc e Preamplifiers for LANs
_______________________________________________________________________________________
5
General Desc ription
The MAX3266 is a transimpedance amplifier designed
for 1.25Gbps fiber optic applications. Figure 2 is a func-
tional diagram of the MAX3266, which comprises a trans-
impedance amplifier, a voltage amplifier, an output
buffer, an output filter, and a DC cancellation circuit.
The MAX3267, a transimpedance amplifier designed
for 2.5Gbps fiber optic applications, shares similar
architecture with the MAX3266.
T ransimpedanc e Amplifier
The signal current at the input flows into the summing
node of a high-gain amplifier. Shunt feedback through
R
F
converts this current to a voltage with gain of approx-
imately 2.2k
(1.0k
for MAX3267). Schottky diodes
clamp the output voltage for large input currents, as
shown in Figure 3.
V oltage Amplifier
The voltage amplifier converts single-ended signals to
differential signals and introduces a voltage gain.
Output Buffer
The output buffer provides a reverse-terminated volt-
age output. The buffer is designed to drive a 100
dif-
ferential load between OUT+ and OUT-. The output
current is divided between internal, 50
load resistors
and the external load resistor. In the typical operating
circuit, this creates a voltage divider with gain of 1/2.
The MAX3266 can also be terminated with higher out-
put impedances, which increases gain and output volt-
age swing.
For optimum supply-noise rejection, the MAX3266
should be terminated with a differential load. If a single-
ended output is required, the unused output should be
similarly terminated. The MAX3266 will not drive a DC-
coupled, 50
grounded load.
VOLTAGE
AMPLIFIER
TRANSIMPEDANCE
AMPLIFIER
OUTPUT
BUFFER
OUTPUT
FILTER
OUT+
OUT-
50
50
V
CC
R
F
V
CC
LOWPASS FILTER
1.5k
FILTER
IN
GND
DC CANCELLATION
CIRCUIT
DISABLE
MAX3266
Figure 2. MAX3266 Functional Diagram
0.50
0.95
0.80
0.65
1.10
1.25
1.40
1.55
1.70
1.85
2.00
0
2
1
3
4
5
M
REVERSE BIAS (V)
C
Figure 1. Typical Photodiode Capacitance vs. Bias Voltage
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX3266-MAX3267 | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 85 |
| MAX3266CSA | 32-Bit Digital Signal Controller with Flash 100-LQFP -40 to 125 |
| MAX3267CSA | 1.25Gbps/2.5Gbps, 3V to 5.5V, Low-Noise Transimpedance Preamplifiers for LANs |
| MAX3271 | +3.3V, 2.5Gbps Low-Power Transimpedance Amplifier |
| MAX3271D | +3.3V, 2.5Gbps Low-Power Transimpedance Amplifier |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3266C/D | 制造商:Maxim Integrated Products 功能描述:1.25GBPS 2.5GBPS, 3V TO 5.5V, LOW NOISE TRANS - Gel-pak, waffle pack, wafer, diced wafer on film |
| MAX3266CSA | 制造商:Maxim Integrated Products 功能描述:1.25GBPS 2.5GBPS, 3V TO 5.5V, LOW NOISE TRANS - Bulk |
| MAX3266CSA+ | 功能描述:特殊用途放大器 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 |
| MAX3266CSA+T | 功能描述:特殊用途放大器 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 |
| MAX3266CSA-T | 功能描述:特殊用途放大器 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 |
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