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| 型号： | MAX4219ESD+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC OP AMP R-R W/ENABLE 14SOIC |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 放大器类型： | 缓冲器 |
| 电路数： | 3 |
| 输出类型： | 满摆幅 |
| 转换速率： | 600 V/µs |
| -3db带宽： | 200MHz |
| 电流 - 输入偏压： | 5.4µA |
| 电压 - 输入偏移： | 4000µV |
| 电流 - 电源： | 5.5mA |
| 电流 - 输出 / 通道： | 120mA |
| 电压 - 电源，单路/双路(±)： | 3.15 V ~ 11 V，±1.575 V ~ 5.5 V |
| 工作温度： | -40°C ~ 85°C |
| 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： | 管件 |
| 产品目录页面： | 1388 (CN2011-ZH PDF) |
________________ Detailed Description
The MAX4214/MAX4215/MAX4217/MAX4219/MAX4222
are single-supply, rail-to-rail output, voltage-feedback,
closed-loop buffers that employ current-feedback tech-
niques to achieve 600V/s slew rates and 230MHz
bandwidths. These buffers use internal 500
resistors
to provide a preset closed-loop gain of 2V/V in the non-
inverting configuration or -1V/V in the inverting configu-
ration. Excellent harmonic distortion and differential
gain/phase performance make them an ideal choice for
a wide variety of video and RF signal-processing appli-
cations.
Local feedback around the buffer’s output stage
ensures low output impedance, which reduces gain
sensitivity to load variations. This feedback also pro-
duces demand-driven current bias to the output tran-
sistors for ±120mA drive capability, while constraining
total supply current to less than 7mA.
___________Applications Information
Power Supplies
These devices operate from a single 3.15V to 11V
power supply or from dual supplies of ±1.575V to
±5.5V. For single-supply operation, bypass the VCC pin
to ground with a 0.1F capacitor as close to the pin as
possible. If operating with dual supplies, bypass each
supply with a 0.1F capacitor.
Selecting Gain Configuration
Each buffer in the MAX4214 family can be configured
for a voltage gain of 2V/V or -1V/V. For a gain of 2V/V,
ground the inverting terminal. Use the noninverting ter-
minal as the signal input of the buffer (Figure 1a).
Grounding the noninverting terminal and using the
inverting terminal as the signal input configures the
buffer for a gain of -1V/V (Figure 1b).
Since the inverting input exhibits a 500
input imped-
ance, terminate the input with a 56
resistor when con-
figured for an inverting gain in 50
applications
(terminate with 88
in 75 applications). Terminate the
input with a 49.9
resistor in the noninverting case.
Output terminating resistors should directly match
cable impedances in either configuration.
Layout Techniques
Maxim recommends using microstrip and stripline tech-
niques to obtain full bandwidth. To ensure the PC
board does not degrade the buffer’s performance,
design it for a frequency greater than 1GHz. Pay care-
ful attention to inputs and outputs to avoid large para-
sitic capacitance. Whether or not you use a constant-
impedance board, observe the following guidelines
when designing the board:
Don’t use wire-wrapped boards. They are too induc-
tive.
Don’t use IC sockets. They increase parasitic capac-
itance 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.
Input Voltage Range and Output Swing
The MAX4214 family’s input range extends from
(VEE - 100mV) to (VCC - 2.25V). Input ground sensing
increases the dynamic range for single-supply applica-
tions. The outputs drive a 2k
load to within 60mV of
the power-supply rails. With smaller resistive loads, the
output swing is reduced as shown in the Electrical
Characteristics and Typical Operating Characteristics.
MAX4214/MAX4215/MAX4217/MAX4219/MAX4222
High-Speed, Single-Supply, Gain of 2,
Closed-Loop, Rail-to-Rail Buffers with Enable
_______________________________________________________________________________________
9
MAX42_ _
500
500
IN-
OUT
RO
RTO
OUT
IN
RTIN
IN+
Figure 1a. Noninverting Gain Configuration (AV = +2V/V)
MAX42_ _
500
500
OUT
RO
RTO
OUT
RS
RTIN
IN+
IN-
IN
Figure 1b. Inverting Gain Configuration (AV = -1V/V)
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4219ESD+ | 功能描述:高速运算放大器 Closed-Loop Rail-Rail Buffer 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 |
| MAX4219ESD+T | 功能描述:高速运算放大器 Closed-Loop Rail-Rail Buffer 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 |
| MAX4219ESD-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 |
| MAX421C/D | 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 |
| MAX421CPD | 功能描述:运算放大器 - 运放 Integrated Circuits (ICs) 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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