Analog Devices, Inc. (ADI), a world leader in high-performance semiconductors for signal processing applications and RF ICs (radio-frequency integrated circuits), today introduced the industry’s most highly integrated wideband passive mixers for communications applications. The ADL5811 single-channel and ADL5812 dual-channel mixers deliver unmatched linearity, low distortion and low noise combined with wideband frequency performance. The new devices enable multiband, single-board receiver designs by combining a wideband LO (local oscillator) amplifier, a programmable RF balun, a high-linearity mixer core, a programmable IF filter, and an IF amplifier.
ADI’s new passive mixers extend across a 700-MHz to 2800-MHz frequency range in a single device while delivering input IP3 (third order intercept) of 24 dBm, an 11 dB SSB noise figure and 7 dB of power conversion gain. These performance specifications are maintained across the full operating frequency range. The ADL5811 and ADL5812 passive mixers are designed for wideband wireless infrastructure applications and software-defined radio applications, including multi-band/multi-standard cellular base station receivers, wideband radio link down converters, multi-mode cellular repeaters, and picocells applications.
“Wireless receiver designers typically have had to choose between an active mixer, which offers excellent wideband operation and moderate spurious-free dynamic range, or a passive mixer, which has greater SFDR performance but much narrower operating bandwidth,” said Peter Real, vice president, Linear and RF products, Analog Devices. “The ADL5811 and ADL5812 passive mixers eliminate the need for this trade off by giving engineers the linearity, distortion and noise performance they need while also supporting true wideband frequency operation.”
