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參數(shù)資料
| 型號(hào)： | MAX4381EUB |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| 中文描述： | DUAL OP-AMP, 24000 uV OFFSET-MAX, PDSO10 |
| 封裝： | MICRO, SOP-10 |
| 文件頁數(shù)： | 11/16頁 |
| 文件大?。?/td> | 755K |
| 代理商： | MAX4381EUB |
M
Ultra-Small, Low-Cost, 210MHz, Single-Supply
Op Amps with Rail-to-Rail Outputs and Disable
______________________________________________________________________________________
11
have a 16ns settling time to 0.1%, 485V/μs slew rates,
and output-current-drive capability of up to 75mA
making them ideal for driving video loads.
Inverting and Noninverting Configurations
Select the gain-setting feedback (R
F
) and input (R
G
)
resistor values to fit your application. Large resistor val-
ues increase voltage noise and interact with the ampli-
fier
’
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 (R
F
= R
G
) using 1k
resistors, combined with 1pF of amplifier input capaci-
tance and 1pF of PC board capacitance, causes a
pole at 159MHz. Since this pole is within the amplifier
bandwidth, it jeopardizes stability. Reducing the 1k
resistors to 100
extends the pole frequency to
1.59GHz, 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 +4.5V to +11V
power supply or from dual ±2.25V to ±5.5V supplies. For
single-supply operation, bypass V
CC
to ground with a
0.1μF capacitor as close to the pin as possible. If operat-
ing with dual supplies, bypass each supply with a 0.1μF
capacitor.
Maxim recommends using microstrip and stripline
techniques to obtain full bandwidth. To ensure that the
PC board does not degrade the amplifier
’
s perfor-
mance, design it for a frequency greater than 1GHz.
Pay careful attention to inputs and outputs to avoid
large parasitic capacitance. Whether or not you use a
constant-impedance board, observe the following
design guidelines:
Don
’
t use wire-wrap boards; they are too inductive.
Don
’
t use IC sockets; they increase parasitic capaci-
tance 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.
Rail-to-Rail Outputs,
Ground-Sensing Inputs
For +5V single-supply operation, the input common-
mode range extends from (V
EE
- 200mV) to (V
CC
- 2.25V) with excellent common-mode rejection.
Beyond this range, the amplifier output is a nonlinear
function of the input, but does not undergo phase
reversal or latchup.
For ±5V dual-supply operation, the common-mode
range is from V
EE
to (V
CC
- 2.25V)
For +5V single-supply operation the output swings to
within 50mV of either power-supply rail with a 2k
load. The input ground sensing and the rail-to-rail out-
put substantially increase the dynamic range. With a
symmetric input in a single +5V application, the input
can swing 2.95Vp-p and the output can swing 4.9Vp-p
with minimal distortion.
Low-Power Disable Mode
The disable feature (
DISABLE_
) allows the amplifier to
be placed in a low-power, high-output-impedance
state. When the disable pin (
DISABLE_
) is active, the
amplifier
’
s output impedance is 35k
. This high resis-
tance and the low 2pF output capacitance make the
MAX4380
–
MAX4382 and the MAX4384 ideal in
RF/video multiplexer or switch applications. For larger
arrays, pay careful attention to capacitive loading.
Refer to the
Output Capacitive Loading and Stability
section.
IN
R
G
V
OUT
= -(R
F
/ R
G
) V
IN
R
F
V
OUT
MAX438 _
Figure 1b. Inverting Gain Configuration
IN
R
G
V
OUT
= [1+ (R
F
/ R
G
)] V
IN
R
F
V
OUT
MAX438 _
Figure 1a. Noninverting Gain Configuration
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4382 | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| MAX4382EEE | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| MAX4382ESD | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| MAX4382EUD | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
| MAX4383 | Ultra-Small, Low-Cost, 210MHz, Single-Supply Op Amps with Rail-to-Rail Outputs and Disable |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4381EUB+ | 功能描述:高速運(yùn)算放大器 210MHz Single-Supply w/Rail-Rail Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4381EUB+T | 功能描述:高速運(yùn)算放大器 210MHz Single-Supply w/Rail-Rail Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4381EUB-T | 功能描述:高速運(yùn)算放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4382EEE | 功能描述:高速運(yùn)算放大器 RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
| MAX4382EEE+ | 功能描述:高速運(yùn)算放大器 210MHz Single-Supply w/Rail-Rail Out RoHS:否 制造商:Texas Instruments 通道數(shù)量:1 電壓增益 dB:116 dB 輸入補(bǔ)償電壓:0.5 mV 轉(zhuǎn)換速度:55 V/us 工作電源電壓:36 V 電源電流:7.5 mA 最大工作溫度:+ 85 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:SOIC-8 封裝:Tube |
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