The LMH664X family is based on proprietary VIP10 dielectrically isolated bipolar process. This device family architecture features the following:
The LMH664X family is a drop-in replacement for the AD805X family of high speed Op Amps in most applications. In addition, the LMH664X will typically save about 40% on power dissipation, due to lower supply current, when compared to competition. All AD805X family’s specified parameters are included in the list of LMH664X ensured specifications in order to ensure equal or better level of performance. However, as in most high performance parts, due to subtleties of applications, it is strongly recommended that the performance of the part to be evaluated is tested under actual operating conditions to ensure full compliance to all specifications.
With 3-V supplies and a common mode input voltage range that extends 0.5 V below V−, the LMH664X find applications in low voltage/low power applications. Even with 3-V supplies, the −3dB BW (@ AV = +1) is typically 115 MHz with a tested limit of 80 MHz. Production testing guarantees that process variations will not compromise speed. High frequency response is exceptionally stable, confining the typical −3dB BW over the industrial temperature range to ±2.5%.
As seen in Typical Performance Characteristics, the LMH664X output current capability (∼75 mA) is enhanced compared to AD805X. This enhancement increases the output load range, adding to the LMH664X’s versatility. Since LMH664X is capable of high output current, device junction temperature should not to exceed the Absolute Maximum Ratings.