參數(shù)資料
型號(hào)： MAX4294
廠商： Maxim Integrated Products, Inc.
英文描述： Ultra-Small, !.8V, レPower, Rail-to-Rail I/O Op Amps
中文描述： 超小型、+1.8V、微功耗、滿(mǎn)擺幅輸入/輸出運(yùn)算放大器
文件頁(yè)數(shù)： 8/16頁(yè)
文件大?。?/td> 397K
代理商： MAX4294
Detailed Description
Rail-to-Rail Input Stage
The MAX4291/MAX4292/MAX4294 have rail-to-rail
inputs and output stages that are specifically designed
for low-voltage, single-supply operation. The input
stage consists of separate NPN and PNP differential
stages, which operate together to provide a common-
mode range extending to both supply rails. The
crossover region of these two pairs occurs halfway
between V
CC
and V
EE
. The input offset voltage is typi-
cally ±400μV. Low operating supply voltage, low sup-
ply current, rail-to-rail common-mode input range, and
rail-to-rail outputs make this family of operational ampli-
fiers (op amps) an excellent choice for precision or
general-purpose, low-voltage, battery-powered sys-
tems.
Since the input stage consists of NPN and PNP pairs,
the input bias current changes polarity as the common-
mode voltage passes through the crossover region.
Match the effective impedance seen by each input to
reduce the offset error caused by input bias currents
flowing through external source impedances (Figures
1a and 1b).
The combination of high source impedance plus input
capacitance (amplifier input capacitance plus stray
capacitance) creates a parasitic pole that produces an
underdamped signal response. Reducing input capaci-
tance or placing a small capacitor across the feedback
resistor improves response in this case.
M
Ultra-Small, +1.8V, μPower,
Rail-to-Rail I/O Op Amps
8
_______________________________________________________________________________________
Pin Description
R3
IN
R3 = R1 R2
R1
R2
MAX4291
MAX4292
MAX4294
R3
R3 = R1 R2
R1
R2
MAX4291
MAX4292
MAX4294
IN
Figure 1a. Minimizing Offset Error Due to Input Bias Current
(Noninverting)
Figure 1b. Minimizing Offset Error Due to Input Bias Current
(Inverting)
PIN
NAME
IN+
V
EE
IN-
OUTA, OUTB
INA-, INB-
V
CC
OUT
INC+, IND+
INC-, IND-
OUTC, OUTD
INA+, INB+
MAX4294
–
11
–
1, 7
2, 6
4
–
10, 12
9, 13
8, 14
3, 5
FUNCTION
MAX4291
1
2
3
MAX4292
–
4
–
Noninverting Input
Negative Supply. Connect to ground for single-supply operation.
Inverting Input
–
–
1, 7
2, 6
Outputs for Amplifiers A and B
Inverting Inputs to Amplifiers A and B
5
8
Positive Supply
4
–
Amplifier Output
–
–
Noninverting Inputs to Amplifiers C and D
–
–
Inverting Inputs to Amplifiers C and D
–
–
Outputs for Amplifiers C and D
–
3, 5
Noninverting Inputs to Amplifiers A and B
相關(guān)PDF資料
PDF描述
MAX4310EUA High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
MAX4310ESA High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
MAX4315EEE High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
MAX4315ESE High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
MAX4310 High-Speed, Low-Power, Single-Supply, Multichannel, Video Multiplexer-Amplifiers
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MAX4294ESD 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V uPower Rail-Rail 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
MAX4294ESD+ 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V uPower Rail-Rail 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
MAX4294ESD+T 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V uPower Rail-Rail 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
MAX4294ESD-T 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V uPower Rail-Rail 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
MAX4294EUD 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V uPower Rail-Rail 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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