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| 型号： | MAX4198EUA+ |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 2/12页 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF PREC R-R 8-UMAX |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 50 |
| 系列： | Beyond-the-Rails™ |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.07 V/µs |
| -3db带宽： | 175kHz |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 45µA |
| 电流 - 输出 / 通道： | 5.5mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 7.5 V，±1.35 V ~ 3.75 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-TSSOP，8-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 8-uMAX |
| 包装： | 管件 |
| 产品目录页面： | 1388 (CN2011-ZH PDF) |
MAX4198/MAX4199
Rail-to-Rail Output Stage
The MAX4198/MAX4199 output stage incorporates a
common-source rail-to-rail structure which maximizes the
dynamic range of the differential amplifier. The output
can swing to within 100mV from each rail with a 5k load
to VCC / 2 (see the Typical Operating Characteristics).
Shutdown Mode
The MAX4198/MAX4199 have an active-low shutdown
input. SHDN input logic thresholds are referenced to
VCC, not to GND. Pulling SHDN 2.5V below the positive
rail places the amplifiers in a 12A (max) shutdown
mode. The MAX4198/MAX4199 exit or enter shutdown
in 35s. In shutdown, the OUT pin is high-impedance.
Applications Information
Driving Capacitive Loads
The MAX4198/MAX4199 are relatively immune to oscilla-
tions caused when driving large capacitive loads.
Although heavy load capacitance increases transient ring-
ing, sustained oscillations typically do not occur for loads
under 600pF (see Pulse Response with Capacitive Load
in the Typical Operating Characteristics). Applications that
require driving higher capacitive loads can isolate the out-
put capacitance using a 15 to 100 resistor between the
amplifier output and the load (Figure 1). Although adding
an isolation resistor dampens the response enough to pre-
vent oscillations, it does so at the expense of bandwidth
and DC accuracy.
Power Supply Considerations
The MAX4198/MAX4199 operate from single +2.7V to
+7.5V supplies or from dual ±1.35V to ±3.75V supplies,
and they consume only 45A of supply current.
Excellent power-supply rejection permits the amplifiers
to be operated directly from a decaying 3V cell without
excessive error. To maximize AC performance, the sup-
ply must be bypassed with a 0.1F ceramic capacitor
to ground that must be as close as possible to the pin.
If dual supplies are used, bypass both supply pins with
0.1F to ground.
Application Circuits
Differential amplifiers can be used in single-ended and
other amplifier applications. Figures 2 through 6 show
the MAX4198/MAX4199 in different configurations. The
internally trimmed and matched resistors offer conven-
ience and have a distinct advantage over external
resistors. These amplifiers are not compensated for sin-
gle-ended unity gain; therefore, IN- should not be con-
nected to OUT or left unconnected.
Micropower, Single-Supply, Rail-to-Rail
Precision Differential Amplifiers
10
______________________________________________________________________________________
MAX4198
MAX4199
RISO
FB
OUT
VEE
VCC
INPUT
IN+
IN-
REF
CL
RL
OUTPUT
Figure 1. Dual-Supply, Capacitive-Load Driving Circuit
MAX4198
MAX4199
FB
OUT
VEE
VCC
IN+
IN-
VA
VB
REF
VOUT
VOUT = (VB - VA)
(MAX4198)
VOUT = 10 (VB - VA)
(MAX4199)
Figure 2. Standard Difference Amplifier
MAX4198
MAX4199
FB
OUT
VEE
VCC
IN+
IN-
VA
REF
VOUT
VOUT = -VA (MAX4198)
VOUT = -10VA (MAX4199)
Figure 3. Precision Inverting Buffer
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相关代理商/技术参数 |
参数描述 |
|---|---|
| MAX4198EUA/GH9-T | 制造商:Maxim Integrated Products 功能描述:MICROPOWER, SINGLE-SUPPLY, RAIL-TO-RAIL PRECISION DIFFERENTI - Tape and Reel |
| MAX4198EUA+ | 功能描述:差分放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道数量:1 Channel 带宽:2.4 GHz 可用增益调整:6 dB to 26 dB 输入补偿电压: 共模抑制比（最小值）:- 40 dB 工作电源电压:4.75 V to 5.25 V 电源电流:100 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:WQFN-24 封装:Reel |
| MAX4198EUA+T | 功能描述:差分放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道数量:1 Channel 带宽:2.4 GHz 可用增益调整:6 dB to 26 dB 输入补偿电压: 共模抑制比（最小值）:- 40 dB 工作电源电压:4.75 V to 5.25 V 电源电流:100 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:WQFN-24 封装:Reel |
| MAX4198EUA-T | 功能描述:差分放大器 uPower Single-Supply Rail-Rail Precision RoHS:否 制造商:Texas Instruments 通道数量:1 Channel 带宽:2.4 GHz 可用增益调整:6 dB to 26 dB 输入补偿电压: 共模抑制比（最小值）:- 40 dB 工作电源电压:4.75 V to 5.25 V 电源电流:100 mA 最大工作温度:+ 85 C 最小工作温度:- 40 C 安装风格:SMD/SMT 封装 / 箱体:WQFN-24 封装:Reel |
| MAX4198-MAX4199 | 制造商:MAXIM 制造商全称:Maxim Integrated Products 功能描述:Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers |
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