PGA-105+ is a MMIC variable gain amplifier VGA developed by Mini-Circuits
Specifications
MFR:
Mini-Circuits
Part Number:
PGA-105+
Description:
High-performance, Monolithic Microwave Integrated Circuit (MMIC)
Highlight:
Mini Circuits MMIC variable gain amplifier
,PGA-105+ VGA with warranty
,MMIC amplifier for RF applications
Introduction
PGA-105+ MMIC Variable Gain Amplifier (VGA)
The PGA-105+ is a high-performance, monolithic microwave integrated circuit (MMIC) variable gain amplifier developed by Mini-Circuits, a leading manufacturer of RF, microwave, and millimeter-wave components. Optimized for precise gain control across a wide frequency spectrum, it combines low noise, high linearity, and flexible adjustability, making it ideal for dynamic signal processing systems.
Key Features
- Wideband Frequency Operation: Covers 10 MHz to 5000 MHz (5 GHz), handling signals across HF, VHF, UHF, L-band, S-band, and lower C-band frequencies.
- Adjustable Variable Gain: Programmable gain range of 0 dB to 31.5 dB with 0.5 dB steps, controlled via 6-bit digital serial interface (SPI).
- Low Noise Figure: Typical noise figure of 2.5 dB at 1 GHz, remaining below 4 dB across most operating bands.
- High Linearity: 1-dB compression point (P1dB) of +18 dBm and third-order intercept point (IP3) of +30 dBm at mid-gain settings.
- Digital SPI Control Interface: Standard 4-wire SPI interface for easy integration with MCUs, DSPs, or FPGAs, including gain state readback capability.
- Single-Supply Operation: Operates from +5V DC with low quiescent current (typically 65 mA at maximum gain).
- Compact QFN Package: 16-lead QFN surface-mount package (4mm x 4mm) designed for high reliability and standard reflow soldering processes.
Applications
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Wireless Communication Systems:
- Software-Defined Radios (SDRs) for programmable gain control
- 5G/4G LTE infrastructure in small cells and base station receivers
- IoT and LPWAN gateways for signal attenuation compensation
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Test and Measurement Equipment:
- RF signal generators/analyzers for adjustable output power
- Vector Network Analyzers (VNAs) for receiver chain signal level adjustment
-
Satellite and GNSS Systems:
- VSAT terminals for uplink/downlink path gain adjustment
- GNSS receivers for multi-constellation signal amplification
-
Public Safety and Military Communications:
- Tactical radios for adaptive signal conditioning
- Electronic Warfare (EW) systems for SIGINT applications
-
Broadband and Cable TV (CATV):
- DOCSIS 3.1/4.0 cable modems for upstream/downstream gain control
- CATV distribution amplifiers for signal level balancing
-
Medical Imaging and Diagnostics:
- Ultrasound systems for echo signal gain adjustment
- RF-based medical devices including MRI signal preprocessors
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