The MAX19985A is a high-linearity, dual-channel, downconversion mixer designed for 700MHz to 1000MHz diversity receiver applications.
The MAX19985A is a high‑linearity, dual‑channel down‑conversion mixer designed for 700 MHz to 1 GHz RF frequencies. It includes two passive mixer cores, LO buffers, a selectable LO switch, and on‑chip baluns for single‑ended RF and LO inputs.
The device is offered in a 6 mm × 6 mm 36‑pin thin QFN‑EP package and operates from either a +5 V or +3.3 V supply. Typical performance includes 8.7 dB conversion gain, 9.0 dB noise figure, and +25.5 dBm IIP3.
| RF Frequency Range | 700 MHz – 1000 MHz |
|---|---|
| LO Frequency Range | 900 MHz – 1300 MHz |
| Typical Conversion Gain | 8.7 dB |
| Typical Noise Figure | 9.0 dB |
| Supply Current (+5 V) | 330 mA (typical) |
| Supply Current (+3.3 V) | 280 mA (typical) |
| Typical Input IP3 | +25.5 dBm |
| Typical Input 1 dB Compression Point | +12.6 dBm |
| Channel‑to‑Channel Isolation | 48 dB (typical) |
The typical conversion gain is 8.7 dB.
Typical supply current is 330 mA at a +5 V supply.