STMicroelectronics ' ST25R3916B-AQWT and ST25R3917B-AQWT NFC Forum Reader devices combine high output power and energy efficiency at a competitive price. Supporting initiator, target, reader and NFC card emulation modes, they can be used in contactless payment, device pairing, wireless charging, brand protection and other industrial and consumer applications.
The new devices feature improved Active Wave Shaping (AWS) with greater flexibility that simplifies tuning RF output to optimize overshoot and undershoot. Configuration can be done easily by recording the settings, which are supported by a graphical tool and quickly validated with an oscilloscope.
This makes it easy to certify to EMVCo 3.1a and NFC Forum CR13 specifications without needing to touch antenna matching.
The ST25R3916B and ST25R3917B provide RF output power of up to 1.6W and can drive antennas directly with high efficiency. Dynamic power output (DPO) tuning allows designers to maintain radiated power between the upper and lower limits defined by EMVCo and NFC Forum specifications.
Combining a highly noise-resistant input structure and ST's proprietary Noise Suppression Receivers (NSR), the ST25R3916B/17B has high immunity to interference from other nearby equipment such as power supplies and POS terminals. Both devices offer a high level of resistance to radiated noise and conducted noise.
The ST25R3916B/17B ICs offer a wide supply voltage range from 2.4 to 5.5 V and operating temperatures from -40° to 105° C. The peripheral I/O circuit can operate from 1. 65V.