OPA381 精确低功耗高速互阻抗放大器
The OPA381 family of transimpedance amplifiers provides 18MHz of Gain Bandwidth (GBW), with extremely high precision, excellent long-term stability, and very low 1/f noise. The OPA381 features an offset voltage of 25µV (max), offset drift of 0.1µV/°C (max), and bias current of 3pA. The OPA381 far exceeds the offset, drift, and noise performance that conventional JFET op amps provide.
The signal bandwidth of a transimpedance amplifier depends largely on the GBW of the amplifier and the parasitic capacitance of the photodiode, as well as the feedback resistor. The 18MHz GBW of the OPA381 enables a trans-impedance bandwidth of >: 250kHz in most configurations. The OPA381 is ideally suited for fast control loops for power level measurement on an optical fiber
|
OPA381 |
| Number of Channels |
1 |
| Total Supply Voltage (V)(Min)(+5V=5, +/-5V=10) |
2.7 |
| Total Supply Voltage (V)(Max)(+5V=5, +/-5V=10) |
5.5 |
| Iq per channel(Max)(mA) |
1 |
| GBW(Typ)(MHz) |
18 |
| Slew Rate(Typ)(V/us) |
12 |
| VIO (25 deg C)(Max)(mV) |
0.025 |
| Offset Drift(Typ)(uV/C) |
0.03 |
| IIB(Max)(pA) |
50 |
| CMRR(Min)(dB) |
95 |
| Vn at 1kHz(Typ)(nV/rtHz) |
114 |
| Rail-Rail |
Out |
| Rating |
Catalog |
| Pin/Package |
8MSOP, 8SON |
| Operating Temperature Range(C) |
-40 to 125 |
| Approx. Price (US$) |
0.75 | 1ku |
OPA381 特性
- OVER 250kHz TRANSIMPEDANCE BANDWIDTH
- DYNAMIC RANGE: 5 Decades
- EXCELLENT LONG-TERM STABILITY
- LOW VOLTAGE NOISE: 10nV/
Hz
- BIAS CURRENT: 3pA
- OFFSET VOLTAGE: 25µV (max)
- OFFSET DRIFT: 0.1µV/°C (max)
- GAIN BANDWIDTH: 18MHz
- QUIESCENT CURRENT: 800µA
- FAST OVERLOAD RECOVERY
- SUPPLY RANGE: 2.7V to 5.5V
- SINGLE AND DUAL VERSIONS
- MicroPACKAGE: DFN-8, MSOP-8
- APPLICATIONS
- PRECISION I/V CONVERSION
- PHOTODIODE MONITORING
- OPTICAL AMPLIFIERS
- CAT-SCANNER FRONT-END
- PHOTO LAB EQUIPMENT
OPA381 芯片订购指南
| 器件 |
状态 |
温度 |
价格（美元） |
封装 | 引脚 |
封装数量 | 封装载体 |
丝印标记 |
| OPA381AIDGKR |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
MSOP (DGK) | 8 |
2500 | LARGE T&R |
|
| OPA381AIDGKRG4 |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
MSOP (DGK) | 8 |
2500 | LARGE T&R |
|
| OPA381AIDGKT |
ACTIVE |
-40 to 125 |
0.90 | 1ku |
MSOP (DGK) | 8 |
250 | SMALL T&R |
|
| OPA381AIDGKTG4 |
ACTIVE |
-40 to 125 |
0.90 | 1ku |
MSOP (DGK) | 8 |
250 | SMALL T&R |
|
| OPA381AIDRBR |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
|
| OPA381AIDRBRG4 |
ACTIVE |
-40 to 125 |
0.75 | 1ku |
SON (DRB) | 8 |
3000 | LARGE T&R |
|
| OPA381AIDRBT |
ACTIVE |
-40 to 125 |
0.90 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
|
| OPA381AIDRBTG4 |
ACTIVE |
-40 to 125 |
0.90 | 1ku |
SON (DRB) | 8 |
250 | SMALL T&R |
|
OPA381 质量与无铅数据
| 器件 |
环保计划* |
铅/焊球涂层 |
MSL 等级/回流焊峰 |
环保信息与无铅 (Pb-free) |
DPPM / MTBF / FIT 率 |
| OPA381AIDGKR |
Green (RoHS & no Sb/Br) |
CU NIPDAUAG |
Level-2-260C-1 YEAR |
OPA381AIDGKR |
OPA381AIDGKR |
| OPA381AIDGKRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAUAG |
Level-2-260C-1 YEAR |
OPA381AIDGKRG4 |
OPA381AIDGKRG4 |
| OPA381AIDGKT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDGKT |
OPA381AIDGKT |
| OPA381AIDGKTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDGKTG4 |
OPA381AIDGKTG4 |
| OPA381AIDRBR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDRBR |
OPA381AIDRBR |
| OPA381AIDRBRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDRBRG4 |
OPA381AIDRBRG4 |
| OPA381AIDRBT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDRBT |
OPA381AIDRBT |
| OPA381AIDRBTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA381AIDRBTG4 |
OPA381AIDRBTG4 |
OPA381 应用技术支持与电子电路设计开发资源下载
- OPA381 数据资料 dataSheet 下载.PDF
- TI 德州仪器仪运算放大器 (Op Amp)产品选型与价格 . xls
- 所选封装材料的热学和电学性质 (PDF 645 KB)
- 高速数据转换 (PDF 1967 KB)
- 在 PSPICE 中使用德州仪器 (TI) SPICE 模型 (zhca088.HTM, 8 KB)
- PowerPAD™ Thermally Enhanced Package (slma002g.HTM, 8 KB)
- 运算放大器的单电源操作 (PDF 2174 KB)
- Tuning in Amplifiers (PDF 44 KB)
- Op Amp Performance Analysis (PDF 76 KB)
- An Error Analysis of the ISO102 in a Small Signal Measuring Application (PDF 29 KB)
- Level Shifting Signals with Differential Amplifiers (PDF 23 KB)
- Operational Amplifier Macromodels: A Comparison (PDF 59 KB)
OPA381 工具与软件
