High-speed DSA targets BTS and test applications
The TQP4M9083 uses a TTL / CMOS-compatible serial peripheral interface (SPI) controller for changing attenuation states; this maintains high attenuation accuracy over frequency and temperature. Switching speed is 118 n/s, input third-order intercept (IIP3) is +55 dBm, and insertion loss is 1.5 dB at 2 GHz.
The attenuator provides upgraded resolution with a 0.25 dB step size, which is a finer gradation compared to other standard 6-bit DSAs; these products typically offer 0.5 dB steps, including the company’s own TQP4M9072. Seeking constant improvement, the TQP4M9083 solution is offered with finer step gradation in the same 24-pin, 4 x 4 mm QFN package and pin-out as the TQP4M9072. This provides more choices for system gain control. The TQP4M9083 is designed to be robust, meeting stringent Class 1C HBM (up to 2 kV) electrostatic discharge (ESD) requirements.
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