| IP명 | A 2.9 Gbps Self-Referenced MUX-Based TRNG using Mismatched Ring Oscillators in 28nm CMOS | ||
|---|---|---|---|
| Category | Mixed | Application | 보안회 |
| 실설계면적 | 4㎛ X 4㎛ | 공급 전압 | 1~1.2V |
| IP유형 | Hard IP | 동작속도 | 48GHz |
| 검증단계 | Silicon | 참여공정 | SS028-2601 |
| IP개요 | This chip presents a high-speed, self-referenced true random number generator (TRNG) implemented in 28nm CMOS technology. While conventional Ring Oscillator (RO)-based TRNGs typically require a large array of identical oscillators and complex XOR-summation networks to accumulate jitter, the proposed design efficiently extracts high-quality entropy from two intentionally mismatched (unbalanced) ROs. The core of the architecture is a counter-driven MUX tree that dynamically selects various sampling paths, effectively capturing both spatial and temporal randomness caused by process-induced timing variations. This self-referenced sampling mechanism eliminates the dependency on external reference clocks and the need for areaintensive digital post-processing circuits. Experimental results demonstrate that the proposed TRNG achieves a peak throughput of 2.9 Gbps with an exceptional energy efficiency of 1.81 pJ/bit. The generated bitstream passes all 15 tests in the NIST SP 800-22 statistical suite, achieving a measured Shannon entropy of 0.99985 bits/bit. These features make the proposed MUX-based TRNG an ideal entropy source for high-performance, area-constrained hardware security and cryptographic applications. |
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