The HFA1130 is a high speed wideband current feedback amplifier featuring programmable output limits. Built with Intersil’s proprietary complementary bipolar UHF-1 process, it is the fastest monolithic amplifier available from any semiconductor manufacturer. This amplifier is the ideal choice for high frequency applications requiring output limiting, especially those needing ultra fast overdrive recovery times. The output limiting function allows the designer to set the maximum positive and negative output levels, thereby protecting later stages from damage or input saturation. The sub-nanosecond overdrive recovery time quickly returns the amplifier to linear operation, following an overdrive condition. The HFA1130 offers significant performance improvements over the CLC500/501/502.
The HFA1130 is a high‑speed, wideband current‑feedback operational amplifier featuring programmable output limits, low distortion, and a 850 MHz -3 dB bandwidth. It is built on Intersil's proprietary complementary bipolar UHF‑1 process and is RoHS‑compliant.
The document provides absolute maximum ratings, electrical specifications, limiting and clamp characteristics, recommended PCB layout guidelines, and typical performance curves. An evaluation board (HFA11XXEVAL) is also described for prototype testing.
| -3dB Bandwidth | 850 MHz |
|---|---|
| Slew Rate | 1400 V/µs |
| Output Current (50% Duty Cycle) | 60 mA |
| Supply Voltage Range | +4.5 V to +6.5 V |
| Input Offset Voltage | 2.6 mV |
| Gain Flatness (to 100 MHz) | +0.14 dB |
| Overdrive Recovery Time | 0.75 ns (typical) |
The device can source up to 60 mA at a 50 % duty cycle.
It operates from +4.5 V to +6.5 V.
The -3 dB bandwidth is specified as 850 MHz.
The typical slew rate is 1400 V/µs.