آر اف (فرکانس رادیویی) و بی‌سیم میکسر آر اف

Product Attributes

Introduction

The AD8344 is a high performance, broadband active mixer. It is well suited for demanding receive-channel applications that require wide bandwidth on all ports and very low intermodulation distortion and noise figure. The AD8344 provides a typical conversion gain of 4.5 dB at 890 MHz. The integrated LO driver supports a 50 Ω input impedance with a low LO drive level, helping to minimize external component count. The single-ended 50 Ω broadband RF port allows for easy interfacing to both active devices and passive filters. The RF input accepts input signals as large as 1.7 V p-p or 8.5 dBm (re: 50 Ω) at P1dB. The open-collector differential outputs provide excellent balance and can be used with a differential filter or IF amplifier, such as the AD8369 or AD8351. These outputs may also be converted to a single-ended signal using a matching network or a transformer (balun). When centered on the VPOS supply voltage, each of the differential outputs may swing 2.5 V p-p. The AD8344 is fabricated on an Analog Devices proprietary, high performance SiGe IC process. The AD8344 is available in a 16-lead LFCSP package. It operates over the -40℃ to +85℃ temperature range. An evaluation board is also available.

Features

• Broadband RF port: 400 MHz to 1.2 GHz
• Conversion gain: 4.5 dB
• Noise figure: 10.5 dB
• Input IP3: 24 dBm
• Input P1dB: 8.5 dBm
• LO drive: 0 dBm
• External control of mixer bias for low power operation
• Single-ended, 50 Ω RF and LO input ports
• Single-supply operation: 5 V at 84 mA
• Power-down mode
• Exposed paddle LFCSP: 3 mm x 3 mm

Applications

• Cellular base station receivers
• ISM receivers
• Radio links
• RF Instrumentation