Overview
The AD8348ARUZ, produced by Analog Devices Inc., is a broadband quadrature demodulator designed for use in communications receivers. It integrates an intermediate frequency (IF) stage, a variable gain amplifier (VGA), and baseband amplifiers. This component is capable of performing quadrature demodulation directly from IF to baseband frequencies, making it suitable for a variety of communication systems.
Key Specifications
| Parameter | Conditions | Min | Typ | Max | Unit |
|---|---|---|---|---|---|
| Operating Frequency Range | 50 | 1000 | MHz | ||
| I/Q Amplitude Imbalance | vs. temperature | -0.3 | ±0.05 | +0.3 | dB |
| Noise Figure (Double Sideband) | Maximum gain, from 200 Ω source, FIF = 380 MHz | 10.75 | dB | ||
| Mixer Output Impedance | 40 | Ω | |||
| Gain Control Voltage Range | VGIN | 0.2 | 1.2 | V | |
| Power-Up Time | Time for final baseband amplifiers to be within 90% of final amplitude | 45 | μs | ||
| Operating Temperature Range | -40 | +85 | °C |
Key Features
- Integrated I/Q demodulator with IF VGA amplifier and baseband amplifiers.
- Broadband operation from 50 MHz to 1000 MHz.
- Variable gain control with a gain slope of -55 to -45 dB/V.
- Baseband amplifiers designed to interface directly with dual-channel ADCs.
- Low noise figure and high linearity.
- Compact 28-lead Thin Shrink Small Outline Package (TSSOP).
- Pb-free and RoHS compliant.
Applications
- Communications receivers.
- Cellular and wireless communication systems.
- Baseband circuits in telecom and wireless infrastructure.
- Radar and surveillance systems.
- Other applications requiring quadrature demodulation and variable gain amplification.
Q & A
- What is the operating frequency range of the AD8348ARUZ?
The AD8348ARUZ operates from 50 MHz to 1000 MHz.
- What type of package does the AD8348ARUZ come in?
The AD8348ARUZ is packaged in a 28-lead Thin Shrink Small Outline Package (TSSOP).
- Is the AD8348ARUZ Pb-free and RoHS compliant?
- What is the typical noise figure of the AD8348ARUZ?
The typical noise figure is 10.75 dB at maximum gain from a 200 Ω source at FIF = 380 MHz.
- How does the gain control work on the AD8348ARUZ?
The gain control is achieved through a variable gain amplifier with a gain slope of -55 to -45 dB/V.
- What is the power-up time for the final baseband amplifiers?
The power-up time for the final baseband amplifiers to be within 90% of final amplitude is 45 μs.
- Can the AD8348ARUZ interface directly with ADCs?
- What is the operating temperature range of the AD8348ARUZ?
The operating temperature range is -40°C to +85°C.
- What are some common applications of the AD8348ARUZ?
- Does the AD8348ARUZ have integrated baseband amplifiers?
