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MAX3967ETG-T

更新时间： 2024-01-30 18:18:18
品牌 Logo 应用领域
美信 - MAXIM 驱动器
页数 文件大小 规格书
14页 320K
描述
Interface Circuit, BIPolar, 4 X 4 MM, 0.80 MM HEIGHT, QFN-24

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MAX3967ETG-T 技术参数

是否无铅： 含铅是否Rohs认证： 不符合
生命周期：Obsolete零件包装代码：QFN
包装说明：HVQCCN,针数：24
Reach Compliance Code：not_compliantHTS代码：8542.39.00.01
风险等级：5.4接口集成电路类型：INTERFACE CIRCUIT
JESD-30 代码：S-XQCC-N24JESD-609代码：e0
长度：4 mm湿度敏感等级：1
功能数量：1端子数量：24
最高工作温度：85 °C最低工作温度：-40 °C
封装主体材料：UNSPECIFIED封装代码：HVQCCN
封装形状：SQUARE封装形式：CHIP CARRIER, HEAT SINK/SLUG, VERY THIN PROFILE
峰值回流温度（摄氏度）：245认证状态：Not Qualified
座面最大高度：0.8 mm最大供电电压：5.5 V
最小供电电压：2.97 V标称供电电压：3.3 V
表面贴装：YES技术：BIPOLAR
温度等级：INDUSTRIAL端子面层：Tin/Lead (Sn/Pb)
端子形式：NO LEAD端子节距：0.5 mm
端子位置：QUAD处于峰值回流温度下的最长时间：NOT SPECIFIED
宽度：4 mmBase Number Matches：1

MAX3967ETG-T 数据手册

 浏览型号MAX3967ETG-T的Datasheet PDF文件第3页浏览型号MAX3967ETG-T的Datasheet PDF文件第4页浏览型号MAX3967ETG-T的Datasheet PDF文件第5页浏览型号MAX3967ETG-T的Datasheet PDF文件第7页浏览型号MAX3967ETG-T的Datasheet PDF文件第8页浏览型号MAX3967ETG-T的Datasheet PDF文件第9页 
2 7 0 Mb p s S FP LED Drive r  
P in De s c rip t io n  
PIN  
NAME  
FUNCTION  
Shorting TC to TCNOM provides a modulation tempco of approximately 3600 ppm/°C.  
A resistor (R ) connected between the TC and TCMIN pins sets the tempco of the modulation  
1
TCNOM  
TC  
2
TC  
current. Leaving R unconnected provides the maximum tempco.  
TC  
3, 4, 5  
6, 7  
PB1, PB2, PB3 Programs the Prebias Voltage at the OUT+ Pin (Table 1)  
V
Ground for the Output-Current Drivers  
Current Output Pins  
EEOUT  
8, 9  
OUT+  
OUT-  
N.C.  
10, 11  
12, 16  
13, 14  
15, 19  
17  
Complementary Current Output Pins  
Not Connected  
V
Supply Connection for the Output-Current Drivers  
Provides Current to the Internal Amplifiers  
The Current Sourced from the MON Pin is Proportional to the Modulator Current  
CCOUT  
V
CC  
MON  
MODSET  
IN-  
18  
A Resistor from MODSET to V Programs the LED Modulation Current  
EE  
20  
Inverting Data Input  
21  
IN+  
Noninverting Data Input  
Transmit Disable. When high, the current at the OUT+ pins is in the low state. The transmitter is  
enabled when TX_DISABLE is open.  
22  
TX_DISABLE  
23  
24  
V
Ground for internal amplifiers.  
EE  
TCMIN  
Shorting TC to TCMIN provides the minimum modulation-current tempco.  
for the temperature characteristics of typical fiber optic  
De t a ile d De s c rip t io n  
LEDs. The first source has a temperature-stable output.  
The second source has a temperature-increasing out-  
put with a tempco of approximately 12,000ppm/°C (rel-  
ative to +25°C). A resistor-divider between the two  
reference generators programs the modulation-current  
te mp c o. For ma ximum mod ula tion-c urre nt te mp c o,  
le a ve the TC p in d is c onne c te d . For a te mp c o of  
approximately 3600ppm/°C, connect TC to TCNOM. To  
obtain the minimum tempco, connect TCMIN to TC.  
Intermediate tempco values can be programmed by  
The MAX3967 provides a flexible current drive for the  
modulation of fiber optic light-emitting diodes (LEDs).  
The circuit is designed to be used with +3.3V or +5V  
power supplies. The IC provides up to 100mA of modu-  
lation current. An adjustable prebias current source  
sets the LED prebias voltage. An integrated resistor  
provides passive peaking and optical pulse-width com-  
pensation.  
Figure 2 shows a block diagram of the MAX3967, which  
comprises a reference-voltage generator, modulation-  
current generator, input buffer with disable, prebias-  
current generator, main output driver, complementary  
output driver, and LED-compensation network.  
connecting an external resistor (R ) between TCMIN  
TC  
and TC.  
In p u t Bu ffe r  
The inputs are connected to the PECL-compatible dif-  
ferential input buffer. If left unconnected, IN+ is internal-  
ly pulled to a PECL low and IN- is pulled to a PECL  
high, causing low current at OUT+. The input imped-  
ance of IN+ and IN- is approximately 50kΩ.  
Te m p e ra t u re Co m p e n s a t io n  
The reference-voltage generator circuit provides two  
voltage sources that create modulation-current temper-  
ature compensation. A positive modulation-current tem-  
perature coefficient (tempco) is useful to compensate  
6
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