- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄384668 > MAX4144 (MAXIM INTEGRATED PRODUCTS INC) High-Speed, Low-Distortion, Differential Line Receivers PDF資料下載
參數(shù)資料
| 型號： | MAX4144 |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 通用總線功能 |
| 英文描述： | High-Speed, Low-Distortion, Differential Line Receivers |
| 中文描述： | LINE DRIVER, PDSO14 |
| 封裝： | SO-14 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 212K |
| 代理商： | MAX4144 |
M
High-S peed, Low-Distortion,
Differential Line Rec eivers
______________________________________________________________________________________
11
Do not use IC sockets—they increase parasitic
capacitance and inductance.
Use surface-mount power-supply bypass capacitors
instead of through-hole capacitors. Their shorter
lead lengths reduce parasitic inductance, leading to
superior high-frequency performance.
Keep signal lines as short and as straight as possi-
ble. Do not make 90° turns; round all corners.
The ground plane should be as free from voids as
possible.
Output S hort-Circ uit Protec tion
Under short-circuit conditions to ground, limit the out-
put current to 120mA. This level is low enough that a
short to ground of moderate duration will not cause per-
manent damage to the chip. However, a short to either
supply will significantly increase power dissipation, and
will cause permanent damage. The high output current
capability is an advantage in systems that transmit a
signal to several loads.
Input Protec tion Circ uitry
The MAX4144/MAX4145/MAX4146 include internal pro-
tection circuitry that prevents damage to the precision
input stage from large differential input voltages. This
protection circuitry consists of five back-to-back
Schottky protection diodes between IN+ and RG+, and
IN- and RG- (Figure 1). The diodes limit the differential
voltage applied to the amplifiers’ internal circuitry to no
more than 10V
F
, where V
F
is the diode’s forward volt-
age drop (about 0.4V at +25°C).
For a large differential input voltage (exceeding 4V), the
MAX4145/MAX4146 input bias current (at IN+ and IN-)
increases according to the following equation:
(
The MAX4144 has an internal gain-setting resistor val-
ued at 1.4k
. A differential input voltage as high as 10V
will cause only 4.3mA to flow—much less than the
10mA absolute maximum rating. However, in the
MAX4145/MAX4146, R
G
can be as low as 150
. Under
this condition, the absolute maximum input current rat-
ing might be exceeded if the differential input voltage
exceeds 5.5V (10mA x 150
+ 10V
F
). In that case,
510
resistors can be placed at IN+ and IN- to limit the
current without degrading performance.
S hutdown Mode
The MAX4144/MAX4145/MAX4146 can be put into low-
power shutdown mode by bringing SHDN high. The
amplifier output is high impedance in this mode; thus
the impedance at OUT is that of the feedback resistors
(1.4k
).
S etting Gain (MAX 4145/MAX 4146)
The MAX4145/MAX4146’s gain is determined by a sin-
gle external resistor, R
G
. The optimal gain range is from
+1V/V to +10V/V for the MAX4145 and +10V/V (R
G
=
open) to +100V/V for the MAX4146. The gain (in V/V) is
given in the following equations:
Input Current=
V
- V
- 10V
R
IN+
IN-
F
G
)
1.4k
IN+
IN-
IN+
IN-
R
G
-
R
G
+
MAX4144
MAX4145
MAX4146
Figure 1. Input Protection Circuits
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4144-MAX4146 | High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4144EEE | High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4144ESD | High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4145EEE | High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4145ESD | High-Speed, Low-Distortion, Differential Line Receivers |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4144_09 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:High-Speed, Low-Distortion, Differential Line Receivers |
| MAX4144EEE | 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 |
| MAX4144EEE+ | 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 |
| MAX4144EEE+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 |
| MAX4144EEE-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 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。