OPA2684 双路低功耗电流反馈运算放大器
The OPA2684 provides a new level of performance in low-power, wideband, current-feedback (CFB) amplifiers. This CFBPLUS amplifier is among the first to use an internally closed-loop input buffer stage that enhances performance significantly over earlier low-power CFB amplifiers. While retaining the benefits of very low power operation, this new architecture provides many of the benefits of a more ideal CFB amplifier. The closed-loop input stage buffer gives a very low and linearized impedance path at the inverting input to sense the feedback error current. This improved inverting input impedance retains exceptional bandwidth to much higher gains and improves harmonic distortion over earlier solutions limited by inverting input linearity.
|
OPA2684 |
| Iq per channel(Max)(mA) |
3.9 |
| Slew Rate(Typ)(V/us) |
820 |
| GBW(Typ)(MHz) |
1900 |
| Io(Typ)(mA) |
120 |
| Vs(Min)(V) |
9 |
| Vs(Max)(V) |
12 |
| Number of Channels |
2 |
| Pin/Package |
8SOIC, 8SOT-23 |
| Acl, min stable gain(V/V) |
1 |
| BW @ Acl(MHz) |
210 |
| Diff Gain(%) |
0.04 |
| Diff Phase(deg) |
0.02 |
| Vio(Max)(mV) |
3.5 |
| THD (Fc=1 MHz)(Typ)(dB) |
-79 |
| Settling Time (0.1%)(Typ)(ns) |
11 |
| Offset Voltage Drift (+/-)(Max)(uV/Degrees Celsius) |
12 |
| Available Channels |
S, D, T, Q |
| Vn at Flatband(Typ)(nV/rtHz) |
3.7 |
| Approx. Price (US$) |
2.10 | 1ku |
| Iib(Max)(nA) |
13000 |
| Noninverting Input Current Noise(pA/rtHz) |
9.4 |
| 2nd Harmonic(dBc) |
80 |
| 3rd Harmonic(dBc) |
80 |
| @ MHz |
5 |
| BW @ G=+2(MHz) |
170 |
| 0.1 dB BW Flatness(MHz) |
19 |
| Inverting Input Current Noise(pA/rtHz) |
17 |
| Crosstalk(-dB) |
70 |
| Operating Temperature Range(C) |
-40 to 125 |
| Rating |
Catalog |
OPA2684 特性
- MINIMAL BANDWIDTH CHANGE VERSUS GAIN
- 170MHz BANDWIDTH AT G = +2
- > 120MHz BANDWIDTH TO GAIN > +10
- LOW DISTORTION: < –82dBc at 5MHz
- HIGH OUTPUT CURRENT: 120mA
- SINGLE +5V TO +12V SUPPLY OPERATION
- DUAL ±2.5 TO ±6.0V SUPPLY OPERATION
- LOW SUPPLY CURRENT: 3.4mA Total
- APPLICATIONS
- SHORT-LOOP ADSL CO DRIVER
- LOW-POWER BROADCAST VIDEO DRIVERS
- DIFFERENTIAL EQUALIZING FILTERS
- DIFFERENTIAL SAW FILTER POST AMPLIFIER
- MULTICHANNEL SUMMING AMPLIFIERS
- PROFESSIONAL CAMERAS
- ADC INPUT DRIVERS
OPA2684 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 |
| OPA2684ID |
ACTIVE |
-40 to 125 |
2.45 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
|
| OPA2684IDCNT |
ACTIVE |
-40 to 125 |
2.35 | 1ku |
SOT-23 (DCN) | 8 |
250 | SMALL T&R |
|
| OPA2684IDCNTG4 |
ACTIVE |
-40 to 125 |
2.35 | 1ku |
SOT-23 (DCN) | 8 |
250 | SMALL T&R |
|
| OPA2684IDG4 |
ACTIVE |
-40 to 125 |
2.45 | 1ku |
SOIC (D) | 8 |
75 | TUBE |
|
| OPA2684IDR |
ACTIVE |
-40 to 125 |
2.10 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
|
| OPA2684IDRG4 |
ACTIVE |
-40 to 125 |
2.10 | 1ku |
SOIC (D) | 8 |
2500 | LARGE T&R |
|
OPA2684 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 |
| OPA2684ID |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684ID |
OPA2684ID |
| OPA2684IDCNT |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684IDCNT |
OPA2684IDCNT |
| OPA2684IDCNTG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684IDCNTG4 |
OPA2684IDCNTG4 |
| OPA2684IDG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684IDG4 |
OPA2684IDG4 |
| OPA2684IDR |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684IDR |
OPA2684IDR |
| OPA2684IDRG4 |
Green (RoHS & no Sb/Br) |
CU NIPDAU |
Level-2-260C-1 YEAR |
OPA2684IDRG4 |
OPA2684IDRG4 |
OPA2684 应用技术支持与电子电路设计开发资源下载
- OPA2684 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)
- PowerPADTM 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)
OPA2684 工具与软件