Overview
The MAX2172ETL/V+T is a direct-conversion to low-IF tuner designed by Analog Devices Inc./Maxim Integrated. This component is specifically tailored for digital audio broadcast (DAB) and terrestrial digital multimedia broadcast (T-DMB) applications. It covers a wide range of input frequencies, including 87MHz to 108MHz (FM), 168MHz to 240MHz (VHF-III), and 1452MHz to 1492MHz (L-band). The MAX2172 achieves high component integration, enabling low-power, tuner-on-board designs. The direct-conversion to low-IF architecture eliminates the need for an IF-SAW filter, providing a balanced 2.048MHz center frequency baseband output to the demodulator.
Key Specifications
| Parameter | Value |
|---|---|
| Package Type | 40-pin TQFN (6mm x 6mm) |
| Supply Voltage Range | 2.7V to 3.5V |
| Operating Temperature Range | -40°C to +85°C |
| Input Frequency Range | 87MHz to 108MHz (FM), 168MHz to 240MHz (VHF-III), 1452MHz to 1492MHz (L-band) |
| Typical Noise Figure (VHF-III) | 2.9dB |
| Typical Noise Figure (L-Band) | 3.1dB |
| VHF-III Sensitivity | -101dBm |
| L-Band Sensitivity | -101dBm |
| ACPR (N±1) | +45dBc |
| Baseband Output Center Frequency | 2.048MHz |
| FM (S+N)/N at -111dBm | 26dB |
Key Features
- Direct-conversion to low-IF architecture, eliminating the need for an IF-SAW filter.
- High component integration, enabling low-power, tuner-on-board designs.
- Buffered reference clock at the crystal frequency.
- Sigma-delta fractional-N synthesizer for optimized phase noise performance.
- Baseband overload detector controls RF AGC.
- Fast channel scan RSSI with 5-Bit Output.
- High sensitivity and low noise figure across various frequency bands.
Applications
- Digital Audio Broadcast (DAB).
- Terrestrial Digital Multimedia Broadcast (T-DMB).
- Communications and Networking.
Q & A
- What is the MAX2172ETL/V+T used for?
The MAX2172ETL/V+T is used for digital audio broadcast (DAB) and terrestrial digital multimedia broadcast (T-DMB) applications.
- What are the input frequency ranges supported by the MAX2172ETL/V+T?
The component supports input frequencies ranging from 87MHz to 108MHz (FM), 168MHz to 240MHz (VHF-III), and 1452MHz to 1492MHz (L-band).
- What is the package type of the MAX2172ETL/V+T?
The MAX2172ETL/V+T is available in a 40-pin thin QFN package (6mm x 6mm) with an exposed pad.
- What is the operating temperature range of the MAX2172ETL/V+T?
The operating temperature range is from -40°C to +85°C.
- What is the supply voltage range for the MAX2172ETL/V+T?
The supply voltage range is 2.7V to 3.5V.
- Does the MAX2172ETL/V+T require an IF-SAW filter?
No, the direct-conversion to low-IF architecture eliminates the need for an IF-SAW filter.
- What is the typical noise figure for VHF-III and L-band frequencies?
The typical noise figure for VHF-III is 2.9dB and for L-band is 3.1dB.
- What is the sensitivity of the MAX2172ETL/V+T for VHF-III and L-band frequencies?
The sensitivity for both VHF-III and L-band frequencies is -101dBm.
- What is the ACPR (N±1) of the MAX2172ETL/V+T?
The ACPR (N±1) is +45dBc.
- Does the MAX2172ETL/V+T have a baseband overload detector?
