The AD8345 is a silicon RFIC quadrature modulator designed for use from 140 MHz to 1000 MHz. It offers excellent phase accuracy and a low noise floor. It can be used in various applications such as cellular communication systems, wireless LAN, and digital TV/CATV modulators.
The AD8345 quadrature modulator splits an external LO signal into two orthogonal components and mixes them with differential baseband I and Q inputs, delivering a single‑ended 50 Ω RF output. It is intended for cellular, wireless LAN, digital TV/CATV, and other communication systems.
Key specifications include a 140 MHz‑1000 MHz operating range, 0.5 dBm typical output power, 0.5° RMS phase error, 0.2 dB amplitude balance, and operation from a 2.7 V‑5.5 V supply. The device is supplied in a 16‑lead TSSOP_EP package and is rated for –40 °C to +85 °C operation.
| Operating Frequency | 140 MHz – 1000 MHz |
|---|---|
| Supply Voltage | 2.7 V – 5.5 V |
| Typical Output Power (140 MHz) | 0.5 dBm |
| Phase Error | 0.5° RMS |
| Amplitude Balance | 0.2 dB |
| Noise Floor | –155 dBm/Hz |
| Package | 16‑lead TSSOP_EP |
The AD8345 operates from 140 MHz to 1000 MHz.
It requires a supply voltage between 2.7 V and 5.5 V.
The device exhibits a typical phase error of 0.5° RMS.
The AD8345 is offered in a 16‑lead TSSOP_EP package.