Replacement Components to TSV622AIST: BU7242SFVM-TR and LMV358M8G-13

Original Part

TSV622AIST

STMicroelectronics

CMOS Amplifier 2 Circuit Rail-to-Rail 8-MiniSO

Alternative Part

BU7242SFVM-TR

Rohm Semiconductor

CMOS Amplifier 2 Circuit Rail-to-Rail 8-MSOP

LMV358M8G-13

Diodes Incorporated

Standard Amplifier 2 Circuit Rail-to-Rail 8-MSOP

1. BU7242SFVM-TR Substitution Conclusion Overall, the feasibility of using the BU7242SFVM-TR as a direct substitute is low. The key differences are as follows: First, its minimum operating voltage is 1.8V, which is higher than the original part's 1.5V. This renders it non-functional in ultra-low-voltage systems operating between 1.5V and 1.8V. Second, its quiescent current (180µA) is over six times greater than the original's (29µA). This represents a significant, often unacceptable drawback for applications prioritizing micropower consumption, such as long-term battery-powered devices. Third, its output drive capability (12mA) is substantially lower than the original's (74mA). Consequently, its load-driving capacity and speed when driving capacitive loads will be markedly inferior. While it offers superior performance in terms of slew rate (0.4V/µs) and gain-bandwidth product (900kHz), the aforementioned critical differences preclude its use as a general-purpose replacement.

2. LMV358M8G-13 Substitution Conclusion Overall, the feasibility of using the LMV358M8G-13 as a direct substitute is limited and should only be considered under specific conditions. The most critical constraint is its minimum operating voltage of 2.7V, which is significantly higher than the original part's 1.5V. This completely eliminates its suitability for any low-voltage or single-cell battery application below 2.7V. Another notable difference is its input bias current (15nA), which is four orders of magnitude greater than the original's 1pA. In signal chains requiring high input impedance—such as photodetection or high-impedance sensor interfaces—this will introduce a non-negligible error current that can severely impact accuracy. Although it offers package compatibility, stronger output current (90mA), and better bandwidth/slew rate performance, these two fundamental differences in voltage and input current severely restrict its viable substitution range.

Analysis ID: 2361-6278000

Based on part parameters and for reference only. Not to be used for procurement or production.