The OPA683 provides a new level of performance in very low-power, wideband, current feedback amplifiers. This CFB_plus 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 advantages 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 gives exceptional bandwidth retention to much higher gains and improved harmonic distortion over earlier solutions limited by inverting input linearity. Beyond simple high gain applications, the OPA683 CFB_plus amplifier can allow the gain setting element to be set with considerable freedom from amplifier bandwidth interaction. This allows frequency response peaking elements to be added, multiple input inverting summing circuits to have greater bandwidth, and low-power line drivers to meet the demanding requirements of studio cameras and broadcast video.

The output capability for the OPA683 also sets a new mark in performance for very low-power current feedback amplifiers. Delivering a full ±4Vp-p swing on ±5V supplies, the OPA683 also has the output current to support this swing into a 100 load. This minimal output headroom requirement is complemented by a similar 1.2V input stage headroom giving exceptional capability for single +5V operation.

The OPA683’s low 0.94mA supply current is precisely trimmed at 25°C. This trim, along with low shift over temperature and supply voltage, gives a very robust design over a wide range of operating conditions. System power may be further reduced by using the optional disable control pin. Leaving this disable pin open, or holding it HIGH, gives normal operation. If pulled LOW, the OPA683 supply current drops to less than 100µA while the I/O pins go to a high impedance state.

• REDUCED BANDWIDTH CHANGE VERSUS GAIN
• 150MHz BANDWIDTH G = +2
• > 90MHz BANDWIDTH TO GAIN > +10
• LOW DISTORTION: < –69dBc at 5MHz
• HIGH OUTPUT CURRENT: 110mA
• SINGLE +5V TO +12V SUPPLY OPERATION
• DUAL ±2.5V TO ±6V SUPPLY OPERATION
• LOW SUPPLY CURRENT: 0.94mA
• LOW SHUTDOWN CURRENT: 100 μA
• APPLICATIONS
  • LOW POWER BROADCAST VIDEO DRIVERS
  • EQUALIZING FILTERS
  • SAW FILTER HIGH GAIN POST AMPLIFIERS
  • SHORT LOOP ADSL CO DRIVERS
  • MULTICHANNEL SUMMING AMPLIFIERS
  • PROFESSIONAL CAMERAS
  • ADC INPUT DRIVERS

All trademarks are the property of their respective owners.

• Architecture
• Current FB
• Number of channels (#)
• 1
• Total supply voltage (Min) (+5V=5, +/-5V=10)
• 5
• Total supply voltage (Max) (+5V=5, +/-5V=10)
• 12
• GBW (Typ) (MHz)
• 145
• BW @ Acl (MHz)
• 145
• Acl, min spec gain (V/V)
• 1
• Slew rate (Typ) (V/us)
• 210
• Vn at flatband (Typ) (nV/rtHz)
• 4.4
• Vn at 1 kHz (Typ) (nV/rtHz)
• 4.4
• Iq per channel (Typ) (mA)
• 0.79
• Vos (offset voltage @ 25 C) (Max) (mV)
• 3.5
• Rail-to-rail
• No
• Features
• Shutdown
• Rating
• Catalog
• Operating temperature range (C)
• -40 to 85
• CMRR (Typ) (dB)
• 56
• Input bias current (Max) (pA)
• 4000000
• Offset drift (Typ) (uV/C)
• 12
• Output current (Typ) (mA)
• 110
• 2nd harmonic (dBc)
• 58
• 3rd harmonic (dBc)
• 68
• @ MHz
• 5

OPA683的完整型号有：OPA683ID、OPA683IDBVR、OPA683IDBVT、OPA683IDR，以下是这些产品的关键参数及官网采购报价：

OPA683ID，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA683ID的批量USD价格：1.591（1000+）

OPA683IDBVR，工作温度：-40 to 85，封装：SOT-23 (DBV)-6，包装数量MPQ：3000个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA683IDBVR的批量USD价格：1.326（1000+）

OPA683IDBVT，工作温度：-40 to 85，封装：SOT-23 (DBV)-6，包装数量MPQ：250个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA683IDBVT的批量USD价格：1.591（1000+）

OPA683IDR，工作温度：-40 to 85，封装：SOIC (D)-8，包装数量MPQ：2500个，MSL 等级/回流焊峰值温度：Level-2-260C-1 YEAR，引脚镀层/焊球材料：NIPDAU，TI官网OPA683IDR的批量USD价格：1.326（1000+）

DEM-OPA-SO-1A — 采用 SO-8 封装的单路运算放大器评估模块

The DEM-OPA-SO-1A demonstration fixture helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the 8-lead SOIC (D) package.

DEM-OPA-SOT-1A — Single op amp evaluation module for SOT23-5/6 package

The DEM-OPA-SOT-1A is a demonstration fixture that helps designers evaluate the operation and performance of TI's High Speed, Wide Bandwidth Operational Amplifiers. This unpopulated PC board is compatible with products offered in the SOT(DBV) package.

OPA683 TINA-TI Reference Design (Rev. C)

PSpice for TI 可提供帮助评估模拟电路功能的设计和仿真环境。此功能齐全的设计和仿真套件使用 Cadence 的模拟分析引擎。PSpice for TI 可免费使用，包括业内超大的模型库之一，涵盖我们的模拟和电源产品系列以及精选的模拟行为模型。

借助?PSpice for TI 的设计和仿真环境及其内置的模型库，您可对复杂的混合信号设计进行仿真。创建完整的终端设备设计和原型解决方案，然后再进行布局和制造，可缩短产品上市时间并降低开发成本。

在?PSpice for TI 设计和仿真工具中，您可以搜索 TI (...)

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TINA-TI 提供了 SPICE 所有的传统直流、瞬态和频域分析以及更多。TINA 具有广泛的后处理功能，允许您按照希望的方式设置结果的格式。虚拟仪器允许您选择输入波形、探针电路节点电压和波形。TINA 的原理图捕获非常直观 - 真正的“快速入门”。

TINA-TI 安装需要大约 500MB。直接安装，如果想卸载也很容易。我们相信您肯定会爱不释手。

TINA 是德州仪器 (TI) 专有的 DesignSoft 产品。该免费版本具有完整的功能，但不支持完整版 TINA 所提供的某些其他功能。

如需获取可用 TINA-TI 模型的完整列表，请参阅：SpiceRack - 完整列表

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模拟工程师计算器旨在加快模拟电路设计工程师经常使用的许多重复性计算。该基于 PC 的工具提供图形界面，其中显示各种常见计算的列表（从使用反馈电阻器设置运算放大器增益到为稳定模数转换器 (ADC) 驱动器缓冲器电路选择合适的电路设计元件）。除了可用作单独的工具之外，该计算器还能够很好地与模拟工程师口袋参考书中所述的概念配合使用。 lock = 需要出口许可（1分钟）

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