The AD831 is a low distortion, wide dynamic range, monolithic mixer for use in such applications as RF to IF downconversion.
The AD831 is a monolithic mixer designed for RF‑to‑IF down‑conversion, direct‑to‑baseband conversion, image‑reject mixing, and quadrature modulation/demodulation. It features a doubly‑balanced architecture, low LO drive requirement (‑10 dBm), and user‑programmable power consumption, delivering a +24 dBm third‑order intercept point and 10.3 dB noise figure.
The device operates from either dual supplies (+4.5 V to +5.5 V) or a single supply of 9 V minimum, with RF and LO input bandwidths up to 500 MHz. It offers both differential‑current and single‑ended voltage IF outputs, and includes an internal low‑noise amplifier. Detailed specifications, pin descriptions, and application notes are provided in the following sections.
| Third‑Order Intercept Point (OIP3) | +24 dBm |
|---|---|
| 1 dB Compression Point | 10 dBm |
| Supply Voltage (Dual) | +4.5 V to +5.5 V |
| RF/LO Input Bandwidth | 500 MHz |
The AD831 requires a low LO drive of –10 dBm to achieve its specified performance.
Yes, it can operate from a single supply of at least 9 V.