700MHz to 2700MHz Analog VGA with Threshold Alarm Circuit and Error Amplifier for Level Control

The MAX2092 high-linearity analog variable-gain amplifier (VGA) is a monolithic SiGe BiCMOS attenuator/amplifier/error amplifier with an alarm circuit designed to interface with 50Ω systems operating in the 700MHz to 2700MHz frequency range. The device features a gain range of 18.1dB to -22.3dB, a noise figure of 5.2dB, OIP3 linearity of +32.5dBm, and a wide RF bandwidth. Each of these features makes the device an ideal VGA for numerous receiver and transmitter applications. When paired with the MAX2091 or MAX2091B variable gain upconverter, a complete 2-chip IF-RF signal conditioning solution is possible for microwave point-to-point transmitters.

The MAX2092 operates from a single +5V supply, and is available in a compact 20-pin TQFN package (5mm x 5mm) with an exposed pad. Electrical performance is guaranteed over the extended temperature range from TC = -40°C to +95°C.

Applications

* Cellular Applications * Fixed Broadband Wireless Access * LTE Applications * Microwave Point-to-Point Receivers and Transmitters * RF Variable-Gain Stages * Temperature Compensation Circuits * WiMAX® Applications * Wireless Local Loop

* Wide Band Analog VGA Increases System Performance

* 700MHz to 2700MHz RF Frequency Range

* High Linearity

* +32.5dBm OIP3

* +18.2dBm Output -1dB Compression Point

* 18.1dB Gain with 40.4dB Attenuation Range and 0.03dB Gain Variation Over 100MHz Bandwidth at 1835MHz

* 5.2dB Noise Figure (Includes Attenuator Insertion Loss)

* Integrated Error Amplifier and Alarm Circuit Simplifies ALC Operation

* Lowers Power Consumption with Power-Down Capability

* Package with Exposed Pad Improves Heat Dissipation and System Performance