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參數(shù)資料
| 型號： | MAX4198-MAX4199 |
| 廠商： | Maxim Integrated Products, Inc. |
| 元件分類： | 運動控制電子 |
| 英文描述： | Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers |
| 中文描述： | 微功耗，單電源，軌至軌精密差分放大器 |
| 文件頁數(shù)： | 10/12頁 |
| 文件大?。?/td> | 227K |
| 代理商： | MAX4198-MAX4199 |
M
Rail-to-Rail Output S tage
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 V
CC
/ 2 (see Typical Operating Characteristics).
S hutdown Mode
The MAX4198/MAX4199 have an active-low shutdown
input.
SHDN
input logic thresholds are referenced to
V
CC
, not to GND. Pulling
SHDN
2.5V below the positive
rail places the amplifiers in a 12μA (max) shutdown
mode. The MAX4198/MAX4199 exit or enter shutdown
in 35μs. In shutdown, the OUT pin is high-impedance.
Applic ations Information
Driving Capac itive 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 don’t 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 S upply 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 45μA 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 0.1μF ceramic capacitor
to ground that must be as close as possible to the pin.
If dual supplies are used, bypass both supply pins with
0.1μF to ground.
Applic ation Circ uits
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.
Mic ropower, S ingle-S upply, Rail-to-Rail
Prec ision Differential Amplifiers
10
______________________________________________________________________________________
MAX4198
MAX4199
R
ISO
FB
OUT
V
EE
V
CC
INPUT
IN+
IN-
REF
C
L
R
L
OUTPUT
Figure 1. Dual-Supply, Capacitive-Load Driving Circuit
MAX4198
MAX4199
FB
OUT
V
EE
V
CC
IN+
IN-
V
A
V
B
REF
V
OUT
V
OUT
= (V
B
- V
A
)
(MAX4198)
V
OUT
= 10 (V
B
- V
A
)
(MAX4199)
Figure 2. Standard Difference Amplifier
MAX4198
MAX4199
FB
OUT
V
EE
V
CC
IN+
IN-
V
A
REF
V
OUT
V
OUT
= -V
A
(MAX4198)
V
OUT
= -10V
A
(MAX4199)
Figure 3. Precision Inverting Buffer
相關PDF資料 |
PDF描述 |
|---|---|
| MAX4198ESA | Micropower, Single-Supply, Rail-to-Rail Precision Differential Amplifiers |
| MAX4210 | High-Side Power and Current Monitors |
| MAX4210-MAX4211 | High-Side Power and Current Monitors |
| MAX4210AETT | High-Side Power and Current Monitors |
| MAX4211 | High-Side Power and Current Monitors |
相關代理商/技術參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4199 | 制造商:MAXIM 制造商全稱:Maxim Integrated Products 功能描述:Micropower.Single-Supply.Rail-to-Rail Precision Differential Amplifiers |
| MAX4199ESA | 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MAX4199ESA+ | 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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MAX4199ESA+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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
| MAX4199ESA-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 安裝風格:SMD/SMT 封裝 / 箱體:QFN-20 封裝:Reel |
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