參數(shù)資料
型號(hào): MAX4076EUK+T
廠商: Maxim Integrated Products
文件頁數(shù): 4/20頁
文件大?。?/td> 0K
描述: IC OPAMP FIXED GAIN R/R SOT23-5
產(chǎn)品培訓(xùn)模塊: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
標(biāo)準(zhǔn)包裝: 2,500
系列: GainAmp™
放大器類型: 通用
電路數(shù): 1
輸出類型: 滿擺幅
轉(zhuǎn)換速率: 0.09 V/µs
增益帶寬積: 230kHz
電流 - 輸入偏壓: 1pA
電壓 - 輸入偏移: 1200µV
電流 - 電源: 45µA
電流 - 輸出 / 通道: 20mA
電壓 - 電源,單路/雙路(±): 2.5 V ~ 5.5 V
工作溫度: -40°C ~ 70°C
安裝類型: 表面貼裝
封裝/外殼: SC-74A,SOT-753
供應(yīng)商設(shè)備封裝: SOT-23-5
包裝: 帶卷 (TR)
MAX4074–MAX4078
Micropower, SOT23, Rail-to-Rail,
Fixed-Gain, GainAmp/Open-Loop Op Amps
12
______________________________________________________________________________________
GainAmp Signal Coupling
and Configurations
Common op amp configurations include both noninvert-
ing and inverting amplifiers. Figures 3–6 show various
single- and dual-supply circuit configurations. In single-
supply systems, use a resistor-divider to bias the nonin-
verting input. A lowpass filter capacitor from the op amp
input to ground (Figure 5) prevents high-frequency
power-supply noise from coupling into the op amp input.
Dual-supply systems can have ground-referenced sig-
nals DC-coupled into the inverting or noninverting inputs.
Supply Bypassing and Board Layout
All devices in this GainAmp family operate from a +2.5V
to +5.5V single supply or from ±1.25V to ±2.75V dual
supplies. For single-supply operation, bypass the power
supply with a 0.1F capacitor to ground. For dual sup-
plies, bypass each supply to ground. Bypass with
capacitors as close to the device as possible to mini-
mize lead inductance and noise. A printed circuit board
with a low-inductance ground plane is recommended.
Capacitive-Load Stability
Driving large capacitive loads can cause instability in
most low-power, rail-to-rail output amplifiers. The fixed-
gain amplifiers of this GainAmp family are stable with
capacitive loads up to 100pF. Stability with higher
capacitive loads can be improved by adding an isola-
tion resistor in series with the op amp output, as shown
in Figure 7. This resistor improves the circuit’s phase
margin by isolating the load capacitor from the amplifi-
er’s output. In Figure 8, a 220pF capacitor is driven with
a 100
isolation resistor exhibiting some overshoot but
no oscillation. Figures 9 and 10 show the typical small-
signal pulse responses of GainAmp fixed-gain ampli-
fiers with 47pF and 100pF capacitive loads and no
isolation resistor
MAX4074
VCC
RG
RF
VIN
VOUT =
-RF
(VIN)
RG
Figure 3. Single-Supply, DC-Coupled Inverting Amplifier with
Negative Input Voltage
MAX4074
VEE
VCC
RG
RF
VIN
VOUT = - VIN
(
RF )
RG
Figure 4. Dual-Supply, DC-Coupled Inverting Amplifier
MAX4074
VCC
RG
RF
VIN
0.1
F
VOUT =
VCC
- VIN
(
RF )
2
RG
Figure 5. Single-Supply, AC-Coupled Inverting Amplifier
MAX4074
VEE
VCC
RG
RF
VIN
VOUT = VIN
(1+
RF )
RG
Figure 6. Dual-Supply, DC-Coupled Noninverting Amplifier
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MAX4077ESA+ 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail Fixed-Gain GainAmp/Open-Loop RoHS:否 制造商:STMicroelectronics 通道數(shù)量:4 共模抑制比(最小值):63 dB 輸入補(bǔ)償電壓:1 mV 輸入偏流(最大值):10 pA 工作電源電壓:2.7 V to 5.5 V 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:QFN-16 轉(zhuǎn)換速度:0.89 V/us 關(guān)閉:No 輸出電流:55 mA 最大工作溫度:+ 125 C 封裝:Reel
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