Overview
The OPA4872IDR is a high-speed, 4:1 multiplexer operational amplifier produced by Texas Instruments. This component is designed to provide high bandwidth and low distortion, making it suitable for various high-speed applications. The OPA4872 operates with a user-settable output amplifier and features a large-signal bandwidth of 500MHz with a 2VPP signal. It also boasts a 0.1dB gain flatness up to 120MHz and a slew rate of 2300V/μs. The device is available in an SO-14 package and can be powered down to reduce power consumption using its enable and shutdown features.
Key Specifications
| Parameter | Typical Value | Units |
|---|---|---|
| Small-signal bandwidth | 500 | MHz |
| Large-signal bandwidth (2VPP) | 500 | MHz |
| Gain flatness | 0.1dB to 120MHz | |
| Slew rate | 2300 | V/μs |
| Rise and fall time (4V step) | 1.25 ns | ns |
| Settling time to 0.05% (2V step) | 15 ns | ns |
| Channel switching time | 10 ns | ns |
| Off isolation in disable or shutdown mode | 88 dB | |
| Quiescent current | 10.6 mA | mA |
| Quiescent current in shutdown mode | 1.1 mA | mA |
Key Features
- High-speed operation: 500MHz large-signal bandwidth and 2300V/μs slew rate.
- Low distortion: 0.1dB gain flatness to 120MHz and low harmonic distortion.
- Low switching glitch: 40mVPP switching glitch.
- Power management: Enable and shutdown features to reduce power consumption.
- High off isolation: 88dB off isolation in disable or shutdown mode.
- Flexible configuration: Can be used as a 2-bit high-speed programmable gain amplifier (PGA) or attenuator.
Applications
- Video routing: Suitable for video routers and multiplexers.
- Display systems: Used in LCD and plasma display systems.
- High-speed PGA and attenuators: Can be configured as a PGA or attenuator for various high-speed applications.
- RGB routing: Can be used to form a four-input RGB router.
- Drop-in upgrade: Can serve as a drop-in upgrade to the AD8174.
Q & A
- What is the large-signal bandwidth of the OPA4872?
The OPA4872 has a large-signal bandwidth of 500MHz with a 2VPP signal.
- What is the gain flatness of the OPA4872?
The OPA4872 has a 0.1dB gain flatness up to 120MHz.
- What is the slew rate of the OPA4872?
The slew rate of the OPA4872 is 2300V/μs.
- How does the OPA4872 manage power consumption?
The OPA4872 has enable and shutdown features to reduce power consumption, with a quiescent current of 10.6mA and 1.1mA in shutdown mode.
- What is the off isolation of the OPA4872 in disable or shutdown mode?
The off isolation of the OPA4872 is 88dB in disable or shutdown mode.
- Can the OPA4872 be used as a PGA or attenuator?
Yes, the OPA4872 can be configured as a 2-bit high-speed PGA or attenuator.
- What are some common applications of the OPA4872?
The OPA4872 is commonly used in video routing, LCD and plasma display systems, high-speed PGA and attenuators, and RGB routing.
- What is the package type of the OPA4872IDR?
The OPA4872IDR is available in an SO-14 package.
- How does the OPA4872 reduce switching glitches?
The OPA4872 uses a patented input stage switching approach that employs current steering to reduce switching glitches.
- Is the OPA4872 a drop-in upgrade for any other component?
Yes, the OPA4872 can serve as a drop-in upgrade to the AD8174.
