The THS3491 device current-feedback amplifier (CFA) provides a new level of performance
for applications requiring the lowest distortion at very high output power levels through >
100-MHz operating frequencies at 100 ohm loads. Although specified at a gain of 5 V/V, this current
feedback design holds almost constant bandwidth and distortion over a wide range of gains.
The remarkable 8000 V/µs slew rate delivers 10-VPP output into
demanding loads with very low distortion through 320 MHz. The 900-MHz, small-signal bandwidth
delivers a low overshoot of < 0.5-ns rise time for a step of < 4 V.
New designs can benefit from the lowest distortion using the VQFN-16 (RGT) package;
whereas, the 8-pin SO PowerPAD™ (DDA) package can be used to
upgrade existing THS3091 or
THS3095 designs. Lower output headroom for
the THS3491 gives more output swing on the same ±15-V supplies versus legacy THS3091 or THS3095
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