- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄385527 > MAX3905 (Maxim Integrated Products, Inc.) 150Mbps Automotive VCSEL Driver PDF資料下載
參數(shù)資料
| 型號(hào)： | MAX3905 |
| 廠商： | Maxim Integrated Products, Inc. |
| 英文描述： | 150Mbps Automotive VCSEL Driver |
| 中文描述： | 150Mbps汽車VCSEL驅(qū)動(dòng)器 |
| 文件頁(yè)數(shù)： | 7/13頁(yè) |
| 文件大小： | 1168K |
| 代理商： | MAX3905 |
第1頁(yè)第2頁(yè)第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)當(dāng)前第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)
Detailed Description
The MAX3905 is comprised of a differential LVDS- or
PECL-compatible input buffer, a TTL-compatible input
buffer, signal detection, DT
0
set block, modulation-cur-
rent generator, bias-current generator, and output dri-
ver (Figure 1). The device implements temperature
compensation in the bias and modulation that can be
customized to accommodate the variation of VCSEL
properties with process and temperature. See Figure 2
and Table 1 for driver current and temperature coeffi-
cient definitions.
Input Buffers
The MAX3905 has two input buffers, one for TTL-com-
patible DC-coupled input data, and the other for AC-
coupled, differential LVDS or PECL input data. The
differential input is relatively high impedance. This
allows external resistors to be configured in several
ways to meet the AC- and DC-termination requirements
of LVDS or PECL.
The active data input buffer is set by the DIFF input. To
select the single-ended TTL input, leave DIFF open. To
select the differential input, connect DIFF to ground.
When using the differential input buffer, input noise can
be sufficient to prevent normal operation of the squelch
function. A small offset on the input ensures proper
functioning of the squelch feature. A 1M
resistor from
IN- to ground or V
CC
creates a 7mV offset.
Signal Detection and Data Squelch
When no data transitions are present at the input, the
signal detection issues a squelch signal to the bias and
modulation current, disabling the VCSEL output. This
ensures that the receiver IC can easily detect the differ-
ence between transmitter on and transmitter off. The
squelch function is enabled when
SQEN
is left uncon-
nected. The squelch function can be disabled by con-
necting
SQEN
to ground.
With squelch enabled, the delay of the squelch function is
suitable for use with biphase-encoded data (maximum of
three consecutive identical digits (CIDs)) or 8B-/10B-
encoded data (maximum five CIDs). To use the MAX3905
with scrambled data, disable the squelch function.
DT
0
Set Block
Inputs DT01 and DT02 are the 2-bit control of the cen-
ter of the temperature-stable region, DT
0
. The tempera-
ture set by DT0[1, 2] should correspond to the T
0
of the
VCSEL. Connect DT01 or DT02 to V
CC
to set the bit
high, or leave open to set the bit low.
The typical DT
0
can be calculated by:
M
150Mbps Automotive VCSEL Driver
_______________________________________________________________________________________
7
I
MOD
3DB
MOD[1, 2]
OUT
V
EE
V
CC
TC[1, 2, 3]
LOW[1, 2]
I
MOD
TEMP
I
BIAS
I
BIAS
TEMP
DT0[1, 2]
DT
0
SET
TEMPSENS
K
GND
OPEN
DIFF
IN+
IN-
IN_TTL
SIGNAL
DETECT
INPUT
BUFFERS
SQEN
V
CC
SQUELCH
OUT
OUTPUT
DRIVER
MODULATION
CURRENT
GENERATOR
BIAS
CURRENT
GENERATOR
MAX3905
Figure 1. Functional Diagram
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX397 | Precision, Dual 8-Channel,Low-Voltage, CMOS Analog Multiplexers(接通電阻100Ω,漏電流0.1nA,導(dǎo)通速率0.15μs,模擬轉(zhuǎn)換器) |
| MAX398 | Precision, 8-Channel,Low-Voltage, CMOS Analog Multiplexers(接通電阻100Ω,漏電流0.1nA,導(dǎo)通速率0.15μs,模擬多路轉(zhuǎn)換器) |
| MAX4029EUP | Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps |
| MAX4028-MAX4029 | Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps |
| MAX4028 | Triple/Quad, 2:1 Video Multiplexer-Amplifiers with Input Clamps |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX3905E/D DIE | 制造商:Maxim Integrated Products 功能描述: |
| MAX3910U/D | 功能描述:跨阻抗放大器 RoHS:否 制造商:Texas Instruments 封裝 / 箱體:SOIC-14 帶寬:3 MHz 工作電源電壓:36 V 電源電流:5.5 mA 工作溫度范圍:- 40 C to + 85 C 封裝:Tube |
| MAX3911EGK | 制造商:Maxim Integrated Products 功能描述: |
| MAX3911EGKD | 制造商:Maxim Integrated Products 功能描述: |
| MAX391C/D | 功能描述:模擬開(kāi)關(guān) IC RoHS:否 制造商:Texas Instruments 開(kāi)關(guān)數(shù)量:2 開(kāi)關(guān)配置:SPDT 開(kāi)啟電阻（最大值）:0.1 Ohms 切換電壓（最大）: 開(kāi)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 |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。