参数资料
型号: MAX3665EUA+T
厂商: Maxim Integrated Products
文件页数: 5/10页
文件大小: 0K
描述: IC PREAMP 622MBPS TRANS 8-UMAX
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
类型: 转阻前置放大器
应用: 光纤学网络
安装类型: 表面贴装
封装/外壳: 8-TSSOP,8-MSOP(0.118",3.00mm 宽)
供应商设备封装: 8-uMAX
包装: 带卷 (TR)
________________Detailed Description
The MAX3665 is a transimpedance amplifier designed
for 622Mbps SDH/SONET applications. It comprises a
transimpedance amplifier, a paraphase amplifier with
CML differential outputs, and a DC cancellation loop.
Figure 1 shows a functional diagram of the MAX3665.
Transimpedance Amplifier
The signal current at IN flows into the summing node of a
high-gain amplifier. Shunt feedback through RF converts
this current to a voltage. Diodes D1 and D2 clamp the
output voltage for large input currents.
MAX3665
622Mbps, Ultra-Low-Power, 3.3V
Transimpedance Preamplifier for SDH/SONET
4
_______________________________________________________________________________________
_____________________________Typical Operating Characteristics (continued)
(VCC = +3.3V, includes off-chip filter, see Figure 3b, TA = +25°C, unless otherwise noted.)
150
200
300
250
350
400
-40
0
-20
20
40
60
80
100
DIFFERENTIAL OUTPUT AMPLITUDE
vs. TEMPERATURE (INPUT = 450
AP-P)
MAX3665
toc10
AMBIENT TEMPERATURE (
°C)
PEAK-TO-PEAK
AMPLITUDE
(mV)
VCC = 5.0V
VCC = 3.3V
EYE DIAGRAM
(INPUT = 10
AP-P)
15mV/div
MAX3665-11
200ps/div
INPUT: 213 - 1 PRBS
CONTAINS 100 ZEROS
EYE DIAGRAM
(INPUT = 450
AP-P)
50mV/div
MAX3665-12
200ps/div
INPUT: 213 - 1 PRBS
CONTAINS 100 ZEROS
PARAPHASE
AMP
1.5k
VCC
R2
50
R1
50
R5
R6
R4
R3
R7
REFERENCE AMP
OUT-
OUT+
FILT
IN
D2
D1
Q2
Q3
MAX3665
RF
VCC
Q5
Q4
DC
CANCELLATION
AMP
VCC
Q1
GND
_____________________Pin Description
NAME
FUNCTION
1
VCC
+3.3V or +5.0V Supply Voltage
2
IN
Signal Input (From Photodiode)
PIN
3
N.C.
No Connection. Not internally con-
nected.
4
FILT
On-Chip Resistor for Filtering
Photodiode Supply Voltage
7
OUT-
Inverting Voltage Output. Current flow-
ing into IN causes VOUT- to decrease.
6
OUT+
Noninverting Voltage Output. Current
flowing into IN causes VOUT+ to
increase.
5, 8
GND
Ground
Figure 1. Functional Diagram
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