The OPA615 is a complete subsystem for very fast and precise DC restoration, offset clamping, and low-frequency hum suppression of wideband amplifiers or buffers. Although it is designed to stabilize the performance of video signals, the circuit can also be used as a sample-and-hold amplifier, high-speed integrator, or peak detector for nanosecond pulses. The device features a wideband Operational Transconductance Amplifier (OTA) with a high-impedance cascode current source output and fast and precise sampling comparator that together set a new standard for high-speed applications. Both the OTA and the sampling comparator can be used as stand-alone circuits or combined to form a more complex signal processing stage. The self-biased, bipolar OTA can be viewed as an ideal voltage-controlled current source and is optimized for low input bias current. The sampling comparator has two identical high-impedance inputs and a current source output optimized for low output bias current and offset voltage; it can be controlled by a TTL-compatible switching stage within a few nanoseconds. The transconductance of the OTA and sampling comparator can be adjusted by an external resistor, allowing bandwidth, quiescent current, and gain trade-offs to be optimized.

The OPA615 is available in both an SO-14 surface-mount and an MSOP-10 package.

• PROPAGATION DELAY: 1.9ns
• BANDWIDTH: OTA: 710MHzComparator: 730MHz
• LOW INPUT BIAS CURRENT: ±1μA
• SAMPLE-AND-HOLD SWITCHING TRANSIENTS: ±5mV
• SAMPLE-AND-HOLD FEEDTHROUGH REJECTION: 100dB
• CHARGE INJECTION: 40fC
• HOLD COMMAND DELAY TIME: 2.5ns
• TTL/CMOS HOLD CONTROL
• APPLICATIONS
  • BROADCAST/HDTV EQUIPMENT
  • TELECOMMUNICATIONS EQUIPMENT
  • HIGH-SPEED DATA ACQUISITION
  • CAD MONITORS/CCD IMAGE PROCESSING
  • NANOSECOND PULSE INTEGRATOR/PEAK DETECTOR
  • PULSE CODE MODULATOR/DEMODULATOR
  • COMPLETE VIDEO DC LEVEL RESTORATION
  • SAMPLE-AND-HOLD AMPLIFIER
  • SHC615 UPGRADE

All trademarks are the property of their respective owners.

• Acl, min spec gain (V/V)
• 1
• Available channels
• S
• Operating temperature range (C)
• -40 to 85
• Output current (Typ) (mA)
• 20
• Rating
• Catalog

OPA615的完整型号有：OPA615ID、OPA615IDGSR、OPA615IDGST、OPA615IDR，以下是这些产品的关键参数及官网采购报价：

OPA615ID，工作温度：-40 to 85，封装：SOIC (D)-14，包装数量MPQ：50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OPA615ID的批量USD价格：5.803（1000+）

OPA615IDGSR，工作温度：-40 to 85，封装：VSSOP (DGS)-10，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：Call TI，TI官网OPA615IDGSR的批量USD价格：4.91（1000+）

OPA615IDGST，工作温度：-40 to 85，封装：VSSOP (DGS)-10，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：NIPDAUAG，TI官网OPA615IDGST的批量USD价格：5.803（1000+）

OPA615IDR，工作温度：-40 to 85，封装：SOIC (D)-14，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OPA615IDR的批量USD价格：4.91（1000+）

DEM-OPA-MSOP-1A — DEM-OPA-MSOP-1A

<p>The <b>DEM-OPA-MSOP-1A</b> demonstration fixture helps designers evaluate the operation and performance of TI's single, wideband DC restoration circuit. This unpopulated PC board (PCB) is compatible with the OPA615 offered in the 10-lead MSOP (DGS) package.</p>

DEM-OPA-SO-1C — FREE DEM-OPA-SO-1C

<p>The <b>DEM-OPA-SO-1C</b> demonstration fixture helps designers evaluate the operation and performance of TI's single, wideband DC restoration circuit. This unpopulated PC board (PCB) is compatible with the OPA615 offered in the 14-lead SOIC (D) package.</p>

<p>For more information on this (...)

OPA615 PSpice Model (Rev. A)

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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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TIDA-00003 — 针对工业和 T&M 应用的多用途采样与保持电路

通过使用 OPA615 高带宽、直流恢复电路，此参考设计可为各种应用提供高带宽、高精度采样保持电路。该电路具有整套设计指南支持，可以针对给定应用方便地调整。