Overview
The AD8346ARUZ-REEL is a silicon RFIC I/Q quadrature modulator designed by Analog Devices Inc. This device is optimized for use in the frequency range of 800 MHz to 2.5 GHz, making it suitable for various RF and microwave applications. It is particularly noted for its excellent phase accuracy and amplitude balance, which enable high-performance direct modulation to RF signals. The AD8346 is fabricated on Analog Devices' high-performance silicon process and operates over a temperature range of -40°C to +85°C with a supply voltage range of 2.7 V to 5.5 V.
Key Specifications
| Parameter | Value | Conditions |
|---|---|---|
| Operating Frequency Range | 800 MHz to 2.5 GHz | |
| Supply Voltage Range | 2.7 V to 5.5 V | |
| Temperature Range | -40°C to +85°C | |
| LO Frequency | Up to 2.5 GHz | Typical LO level = -10 dBm |
| LO Drive Level | -6 dBm to -12 dBm | Differential LO drive recommended |
| Baseband Input Impedance | 12 kΩ | I and Q inputs |
| Output Load Impedance | 50 Ω | |
| Package Type | 16-TSSOP (0.173", 4.40mm Width) |
Key Features
- Differential LO input with polyphase network phase splitter for accurate phase quadrature.
- Buffer amplifiers to improve signal-to-noise ratio.
- Gilbert-cell mixers for high-performance modulation.
- Differential V-to-I converters for baseband modulation signals.
- Output amplifier designed to drive a 50 Ω load.
- Low LO feedthrough achievable through proper biasing and matching.
- Optimized for lower power applications.
Applications
- Wireless communication systems, including CDMA, GSM, and other cellular standards.
- Radar and military communication systems requiring high-frequency modulation.
- Test and measurement equipment where precise RF modulation is necessary.
- Other RF and microwave applications requiring high-performance I/Q modulation.
Q & A
- What is the operating frequency range of the AD8346?
The AD8346 operates from 800 MHz to 2.5 GHz. - What is the supply voltage range for the AD8346?
The supply voltage range is 2.7 V to 5.5 V. - What is the recommended LO drive level for the AD8346?
The recommended LO drive level is between -6 dBm and -12 dBm, with a differential LO drive. - How does the AD8346 achieve accurate phase quadrature?
The AD8346 uses a polyphase network phase splitter to achieve accurate phase quadrature. - What is the output load impedance of the AD8346?
The output load impedance is 50 Ω. - What type of package does the AD8346 come in?
The AD8346 comes in a 16-TSSOP package (0.173", 4.40mm Width). - How can LO feedthrough be minimized in the AD8346?
LO feedthrough can be minimized by proper biasing and matching, including the use of precision thin-film resistor networks and dual-integrated DACs. - What are some common applications of the AD8346?
The AD8346 is commonly used in wireless communication systems, radar, military communication systems, and test and measurement equipment. - What is the temperature range for the AD8346?
The temperature range is -40°C to +85°C. - How does the AD8346 improve signal-to-noise ratio?
The AD8346 improves signal-to-noise ratio through the use of buffer amplifiers between the sections of the phase splitter.
