Industry Insights

Domestic Substitution in Analog ICs: Breakthroughs in Op Amps and Power Management ICs

2025-10-25analog chips / domestic substitution / operational amplifiers

Analog ICs are the bedrock of electronic systems and have long been dominated by international giants such as TI, ADI, and Maxim. In recent years, domestic analog IC makers have made notable progress in precision op amps, high-speed ADCs/DACs, and power management ICs, with some products matching international counterparts on key specifications. This article examines domestic substitution in industrial-grade analog ICs, covering breakthroughs in offset voltage, drift, and noise for domestic op amps and their validation in industrial control and instrumentation applications.

The Analog IC Market Landscape

Analog ICs are among the semiconductor segments with the highest technical barriers and the longest product life cycles. The global analog IC market is worth roughly 80 billion US dollars, with Texas Instruments (TI) ranked first at about a 20% share, followed by Analog Devices (ADI), Infineon, NXP, and STMicroelectronics (ST).

China is the world's largest consumer of analog ICs, accounting for about 35% of global consumption, yet domestic analog ICs meet only around 15% of that demand — leaving enormous room for domestic substitution.

Breakthroughs in Precision Op Amps

Precision operational amplifiers are the most fundamental and critical analog ICs in industrial control and instrumentation. Their core specifications include input offset voltage (VOS), offset drift over temperature (TCVOS), input bias current (IB), and voltage noise density (en).

Domestic precision op amps have made marked progress on these core specifications. SG Micro's SGM8262, for example, achieves a typical VOS of 5μV and a TCVOS of 0.02μV/°C, approaching the level of TI's OPA2188. 3PEAK's TPC1062 stands out for low noise, with a voltage noise density of just 5.8nV/√Hz, well suited to high-precision data acquisition.

Progress in Power Management ICs

In DC-DC converters, domestic vendors have achieved large-scale substitution in low- and mid-voltage (3.3V/5V/12V) synchronous buck converters, with some products reaching mainstream international levels in efficiency, ripple, and transient response. In high-voltage (48V/100V) DC-DC converters and multi-channel PMICs, domestic vendors are still catching up.

Industrial Application Validation

Validation of domestic analog ICs in industrial applications is the key step in advancing substitution. JH Semiconductor provides selection evaluation and substitution validation services for domestic analog ICs, covering parameter benchmarking, circuit compatibility assessment, temperature cycling tests, and long-term reliability verification.

Through these professional validation services, a number of industrial customers have successfully switched key analog ICs from imported to domestic brands, effectively reducing procurement costs and supply chain risk while maintaining product performance.

Keywords
analog chipsdomestic substitutionoperational amplifierspower management ICindustrial controlSG Micro