HJ7172
HJ7171 / HJ7172 is a high-speed voltage amplifier that features the fast slew‑rate characteristics of current‑feedback amplifiers and can be used in all conventional voltage‑feedback op‑amp application circuits.
Keywords:
HJ7172
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HJ7171 / HJ7172 is a high-speed voltage amplifier that features the fast slew‑rate characteristics of current‑feedback amplifiers and can be used in all conventional voltage‑feedback op‑amp applications. The device operates stably even with low‑gain feedback loops (gain of +2 and –1) while drawing only 8 mA.
Its supply current enables an ultra‑high slew rate of 1200 V/µs and a unity‑gain bandwidth of 120 MHz, making it an ideal choice for high‑speed signal processing and video applications. The device delivers a maximum open‑loop output current of 65 mA, suitable as a level‑shifter driver or laser driver in video transmission systems. It also boasts excellent dynamic performance, with an exceptionally high signal‑to‑noise ratio and very low harmonic distortion, making it well suited for ADC/DAC systems.
The operating voltage is ±5 V, making it suitable for a wide range of portable devices.
Key features:
Simple and easy-to-use voltage-feedback (VFA) topology Ultra-high slew rate: 1200 V/µs
High unity-gain bandwidth: 120 MHz -3 dB bandwidth (AV = +2): 100 MHz
Low quiescent current: 8 mA Open-loop output current: 65 mA
Operating voltage: ±5 to ±8 V