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| 型号： | MAX4386EESD+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 12/13页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP R-R SNGL 14-SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 应用： | 电压反馈 |
| 输出类型： | 满摆幅 |
| 电路数： | 4 |
| -3db带宽： | 230MHz |
| 转换速率： | 450 V/µs |
| 电流 - 电源： | 5.5mA |
| 电流 - 输出 / 通道： | 55mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 5.5 V |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 14-SOIC（0.154"，3.90mm 宽） |
| 供应商设备封装： | 14-SOIC |
| 包装： | 带卷 (TR) |
MAX4385E/MAX4386E
Low-Cost, 230MHz, Single/Quad Op Amps with
Rail-to-Rail Outputs and ±15kV ESD Protection
8
_______________________________________________________________________________________
Detailed Description
The MAX4385E/MAX4386E are single/quad, 5V, rail-to-
rail, voltage-feedback amplifiers that employ current-
feedback techniques to achieve 450V/s slew rates
and 230MHz bandwidths. High ±15kV ESD protection
guards against unexpected discharge. Excellent har-
monic distortion and differential gain/phase perfor-
mance make these amplifiers an ideal choice for a wide
variety of video and RF signal-processing applications.
Applications Information
The output voltage swings to within 50mV of each sup-
ply rail. Local feedback around the output stage
ensures low open-loop output impedance to reduce
gain sensitivity to load variations. The input stage per-
mits common-mode voltages beyond VEE and to within
2.25V of the positive supply rail.
Choosing Resistor Values
Unity-Gain Configuration
The MAX4385E/MAX4386E are internally compensated
for unity gain. When configured for unity gain, a 24
resistor (RF) in series with the feedback path optimizes
AC performance. This resistor improves AC response
by reducing the Q of the parallel LC circuit formed by
the parasitic feedback capacitance and inductance.
Video Line Driver
The MAX4385E/MAX4386E are low-power, voltage-
feedback amplifiers featuring bandwidths up to
230MHz, 0.1dB gain flatness to 30MHz. They are
designed to minimize differential-gain error and differ-
ential-phase error to 0.02% and 0.01°, respectively.
They have a 14ns settling time to 0.1%, 450V/s slew
rates, and output-current-drive capability of up to
50mA, making them ideal for driving video loads.
Inverting and Noninverting Configurations
Select the gain-setting feedback (RF) and input (RG)
resistor values to fit your application. Large resistor val-
ues increase voltage noise and interact with the amplifi-
er’s input and PC board capacitance. This can
generate undesirable poles and zeros and decrease
bandwidth or cause oscillations. For example, a nonin-
verting gain-of-two configuration (RF = RG) using 1k
resistors, combined with 8pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a pole
at 35.4MHz. Since this pole is within the amplifier band-
width, it jeopardizes stability. Reducing the 1k
resis-
tors to 100
extends the pole frequency to 353.8MHz,
but could limit output swing by adding 200
in parallel
with the amplifier’s load resistor (Figures 1a
and 1b).
Layout and Power-Supply Bypassing
These amplifiers operate from a single 5V power supply.
Bypass VCC to ground with 0.1F and 2.2F capacitors as
close to the pin as possible.
Maxim recommends using microstrip and stripline tech-
niques to obtain full bandwidth. To ensure that the PC
board does not degrade the amplifier’s performance,
design it for a frequency greater than 1GHz. Pay care-
ful attention to inputs and outputs to avoid large para-
sitic capacitance. Regardless of whether you use a
constant-impedance board, observe the following
design guidelines:
Do not use wire-wrap boards; they are too inductive.
Do not use IC sockets; they increase parasitic
capacitance and inductance.
Use surface mount instead of through-hole compo-
nents for better high-frequency performance.
Use a PC board with at least two layers; it should be
as free from voids as possible.
Keep signal lines as short and as straight as possi-
ble. Do not make 90° turns; round all corners.
IN
RG
VOUT = -(RF / RG) VIN
RF
VOUT
MAX438_E
Figure 1b. Inverting Gain Configuration
IN
RG
VOUT = [1+ (RF / RG)] VIN
RF
VOUT
MAX438_E
Figure 1a. Noninverting Gain Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4386EEUD | 功能描述:高速运算放大器 RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4386EEUD+ | 功能描述:高速运算放大器 230MHz w/Rail-Rail Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4386EEUD+T | 功能描述:高速运算放大器 230MHz w/Rail-Rail Output RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4386EEUD-T | 功能描述:高速运算放大器 RoHS:否 制造商:Texas Instruments 通道数量:1 电压增益 dB:116 dB 输入补偿电压:0.5 mV 转换速度:55 V/us 工作电源电压:36 V 电源电流:7.5 mA 最大工作温度:+ 85 C 安装风格:SMD/SMT 封装 / 箱体:SOIC-8 封装:Tube |
| MAX4387ESA | 功能描述:运算放大器 - 运放 RoHS:否 制造商:STMicroelectronics 通道数量:4 共模抑制比（最小值）:63 dB 输入补偿电压:1 mV 输入偏流（最大值）:10 pA 工作电源电压:2.7 V to 5.5 V 安装风格:SMD/SMT 封装 / 箱体:QFN-16 转换速度:0.89 V/us 关闭:No 输出电流:55 mA 最大工作温度:+ 125 C 封装:Reel |
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