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參數(shù)資料
| 型號(hào)： | MAX4246AKA-T |
| 廠商： | MAXIM INTEGRATED PRODUCTS INC |
| 元件分類： | 運(yùn)動(dòng)控制電子 |
| 英文描述： | Ultra-Small, Rail-to-Rail I/O with Disable, Single-/Dual-Supply, Low-Power Op Amps |
| 中文描述： | DUAL OP-AMP, 3000 uV OFFSET-MAX, 1 MHz BAND WIDTH, PDSO8 |
| 封裝： | MO-178, SOT-23, 8 PIN |
| 文件頁數(shù)： | 7/11頁 |
| 文件大?。?/td> | 495K |
| 代理商： | MAX4246AKA-T |
Detailed Description
Rail-to-Rail Input Stage
The MAX4245/MAX4246/MAX4247 have rail-to-rail input
and output stages that are specifically designed for
low-voltage, single-supply operation. The input stage
consists of composite 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
DD
and V
SS
. The input offset voltage is typically ±400μV.
Low-operating supply voltage, low supply current and
rail-to-rail outputs make this family of operational ampli-
fiers an excellent choice for precision or general-pur-
pose, low-voltage, battery-powered systems.
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 impedance (Figures 1a
and 1b).
The combination of high-source impedance plus input
capacitance (amplifier input capacitance plus stray
capacitance) creates a parasitic pole that can produce
an underdamped signal response. Reducing input
capacitance or placing a small capacitor across the
feedback resistor improves response in this case.
The MAX4245/MAX4246/MAX4247 family
’
s inputs are
protected from large differential input voltages by inter-
nal 5.3k
series resistors and back-to-back triple-diode
stacks across the inputs (Figure 2). For differential-
input voltages much less than 2.1V (triple-diode drop),
M
Ultra-Small, Rail-to-Rail I/O with Disable,
Single-/Dual-Supply, Low-Power Op Amps
_______________________________________________________________________________________
7
Pin Description
PIN
MAX4245
1
2
3
4
5
6
—
—
—
—
—
—
—
—
MAX4246
—
4
—
—
—
8
1
2
3
5
6
7
—
—
MAX4247
—
4
—
—
—
10
1
2
3
7
8
9
5
6
NAME
FUNCTION
IN+
V
SS
IN-
OUT
SHDN
V
DD
OUTA
INA-
INA+
INB+
INB-
OUTB
SHDNA
SHDNB
Noninverting Input
Ground or Negative Supply
Inverting Input
Amplifier Output
Shutdown
Positive Supply
Amplifier Output Channel A
Inverting Input Channel A
Noninverting Input Channel A
Noninverting Input Channel B
Inverting Input Channel B
Amplifier Output Channel B
Shutdown Channel A
Shutdown Channel B
IN
R3
R3 = R1
R2
R1
R2
V
DD
IN
R3
R3 = R1
R2
R1
R2
V
DD
Figure 1a. Minimizing Offset Error Due to Input Bias Current
(Noninverting)
Figure 1b. Minimizing Offset Error Due to Input Bias Current
(Inverting)
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| MAX4245AUT-T | Circular Connector; MIL SPEC:MIL-C-5015 A/B/C; Body Material:Metal; Series:MS3106A; No. of Contacts:3; Connector Shell Size:14S; Connecting Termination:Solder; Circular Shell Style:Straight Plug; Body Style:Straight RoHS Compliant: No |
| MAX4245AXT-T | Ultra-Small, Rail-to-Rail I/O with Disable, Single-/Dual-Supply, Low-Power Op Amps |
| MAX4246 | Differential Bus Transceivers 8-PDIP -40 to 85 |
| MAX4246AUA | Differential Bus Transceivers 8-PDIP -40 to 85 |
| MAX4247 | Differential Bus Transceivers 8-SOIC -40 to 125 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| MAX4246ASA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail I/O w/Disable 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 |
| MAX4246ASA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail I/O w/Disable 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 |
| MAX4246AUA | 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail I/O w/Disable 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 |
| MAX4246AUA+ | 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail I/O w/Disable 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 |
| MAX4246AUA+T | 功能描述:運(yùn)算放大器 - 運(yùn)放 Rail-Rail I/O w/Disable 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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