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参数资料
| 型号： | MAX3942ETG+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 8/10页 |
| 文件大小： | 0K |
| 描述： | IC MODULATOR DRVR 10GBPS 24-TQFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 75 |
| 类型： | 驱动器 |
| 驱动器/接收器数： | 1/0 |
| 电源电压： | -5.5 V ~ -4.9 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 24-WFQFN 裸露焊盘 |
| 供应商设备封装： | 24-TQFN-EP（4x4） |
| 包装： | 管件 |
MAX3942
10Gbps Modulator Driver
_______________________________________________________________________________________
7
Detailed Description
The MAX3942 modulator driver accepts differential
clock and data inputs that are compatible with PECL
and CML logic levels.
The modulation output stage is composed of a high-
speed differential pair and a programmable current
source with a maximum modulation current of 120mA.
The rise and fall times are typically 23ps. The modulation
current is designed to produce a modulation voltage up
to 3.0VP-P single endedly, or 6.0VP-P differentially when
driving a 50
Ω module. The 3.0VP-P results from 120mAP-P
through the parallel combination of the 50
Ω modulator
load and the internal 50
Ω back termination.
Polarity Switch
The MAX3942 includes a polarity switch. When the
PLRT pin is high or left floating, the outputs maintain the
polarity of the input data. When the PLRT pin is low, the
outputs are inverted relative to the input data.
Clock/Data Input Logic Levels
The MAX3942 is directly compatible with ground-refer-
ence CML. Either DC- or AC-coupling may be used for
CML referenced to ground. For all other logic types,
AC-coupling should be used.
Optional Data Input Latch
To reject pattern-dependent jitter in the input data, a syn-
chronous differential clock signal should be connected to
the CLK+ and CLK- inputs, and the RTEN control input
should be connected to VEE.
PIN
NAME
FUNCTION
1
DATA+
Noninverting Data Input, with 50
Ω On-Chip Termination
2
DATA-
Inverting Data Input, with 50
Ω On-Chip Termination
3, 4, 14, 17
GND
Ground. All pins must be connected to board ground.
5
CLK+
Noninverting Clock Input for Data Retiming, with 50
Ω On-Chip Termination
6
CLK-
Inverting Clock Input for Data Retiming, with 50
Ω On-Chip Termination
7, 11, 12, 13,
18, 19, 21, 24
VEE
Negative Supply Voltage. All pins must be connected to board VEE.
8
PWC+
Positive Input for Modulation Pulse-Width Adjustment (see the Design Procedure section).
9
PWC-
Negative Input for Modulation Pulse-Width Adjustment. Ground to disable the pulse-width
adjustment feature (see the Design Procedure section).
10
MODSET
Modulation Current Set. Apply a voltage to set the modulation current of the driver output.
15
OUT-
Inverting Driver Output. Provides modulation output with 50
Ω back termination. Sinks current when
PLRT is high and when differential data is high.
16
OUT+
Noninverting Driver Output. Provides modulation output with 50
Ω back termination. Sinks current
when PLRT is high and when differential data is low.
20
PLRT
Differential Data Polarity Swap Input. Set high or float for normal operation. Set low to invert the
differential signal polarity. Contains an internal 100k
Ω pullup to GND.
22
MODEN
TTL/CMOS Modulation Enable Input. Set low or float for normal operation. Set high to put the EAM
in the absorption (logic 0) state. Contains an internal 100k
Ω pulldown to VEE.
23
RTEN
Data-Retiming Input. Connect to VEE for retimed data. Connect to GND to bypass retiming latch.
EP
Exposed
Pad
Ground. Must be soldered to the circuit board ground for proper thermal and electrical performance.
See the Layout Considerations section.
Pin Description
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX3942ETG+ | 功能描述:缓冲器和线路驱动器 10Gbps Modulator Driver RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3942ETG+T | 功能描述:缓冲器和线路驱动器 10Gbps Modulator Driver RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3942ETG-T | 功能描述:缓冲器和线路驱动器 10Gbps Modulator Driver RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3942EVKIT | 功能描述:缓冲器和线路驱动器 Evaluation Kit for the MAX3942 RoHS:否 制造商:Micrel 输入线路数量:1 输出线路数量:2 极性:Non-Inverting 电源电压-最大:+/- 5.5 V 电源电压-最小:+/- 2.37 V 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:MSOP-8 封装:Reel |
| MAX3945ETE+ | 功能描述:限幅放大器 1.0625-11.3Gbps SFP Dual-Path Limit Amp RoHS:否 制造商:Micrel 输入电压范围（最大值）:3.6 V 工作电源电压:3.3 V 电源电流:40 mA 工作温度范围:- 40 C to + 85 C 封装 / 箱体:MSOP-10 封装:Tube |
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