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參數(shù)資料
| 型號(hào)： | OPA2333AIDRG4 |
| 英文描述： | 1.8V, microPOWER CMOS OPERATIONAL AMPLIFIERS Zer-PI Drift Series |
| 中文描述： | 1.8，微CMOS運(yùn)算放大器澤爾聚酰亞胺漂移系列 |
| 文件頁數(shù)： | 7/18頁 |
| 文件大?。?/td> | 478K |
| 代理商： | OPA2333AIDRG4 |
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SBOS351 MARCH 2006
www.ti.com
7
APPLICATIONS INFORMATION
The OPA333 and OPA2333 are unity-gain stable and free
from unexpected output phase reversal. They use a
proprietary auto-calibration technique to provide low offset
voltage and very low drift over time and temperature. For
lowest offset voltage and precision performance, circuit
layout and mechanical conditions should be optimized.
Avoid temperature gradients that create thermoelectric
(Seebeck) effects in the thermocouple junctions formed
from
connecting
dissimilar
thermally-generated potentials can be made to cancel by
assuring they are equal on both input terminals. Other
layout and design considerations include:
conductors.
These
Use low thermoelectric-coefficient conditions (avoid
dissimilar metals).
Thermally isolate components from power supplies or
other heat sources.
Shield op amp and input circuitry from air currents,
such as cooling fans.
Following these guidelines will reduce the likelihood of
junctions being at different temperatures, which can cause
thermoelectric voltages of 0.1
μ
V/
°
C or higher, depending
on materials used.
OPERATING VOLTAGE
The OPA333 and OPA2333 op amps operate over a
power-supply range of +1.8V to +5.5V (
±
0.9V to
±
2.75V).
Supply voltages higher than +7V (absolute maximum) can
permanently damage the device. Parameters that vary
over supply voltage or temperature are shown in the
Typical Characteristics section of this data sheet.
INPUT VOLTAGE
The OPA333 and OPA2333 input common-mode voltage
range extends 0.1V beyond the supply rails. The OPA333
is designed to cover the full range without the troublesome
transition region found in some other rail-to-rail amplifiers.
Normally, input bias current is about 70pA; however, input
voltages exceeding the power supplies can cause
excessive current to flow into or out of the input pins.
Momentary voltages greater than the power supply can be
tolerated if the input current is limited to 10mA. This
limitation is easily accomplished with an input resistor, as
shown in Figure 1.
5k
OPA333
10mA max
+5V
V
IN
V
OUT
I
OVERLOAD
Currentlimiting resistor
required if input voltage
exceeds supply rails by
≥
0.5V.
Figure 1. Input Current Protection
INTERNAL OFFSET CORRECTION
The OPA333 and OPA2333 op amps use an
auto-calibration technique with a time-continuous 350kHz
op amp in the signal path. This amplifier is zero-corrected
every 8
μ
s using a proprietary technique. Upon power-up,
the amplifier requires approximately 100
μ
s to achieve
specified V
OS
accuracy. This design has no aliasing or
flicker noise.
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| OPA2333AQDGKRQ1 | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V17uA2uVmicro PWR CMOS 0-Drift 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 |
| OPA2333AQDRQ1 | 功能描述:運(yùn)算放大器 - 運(yùn)放 1.8V,17uA,2uV,micro Pwr CMOS 0-Drift Ser 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 |
| OPA2333HD | 功能描述:運(yùn)算放大器 - 運(yùn)放 Hi Temperature 1.8-V MicroPWR CMOS Op Amp 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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