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MAX2170
Direct-Conversion to Low-IF Tuners for Digital Audio Broadcast
Highest Performance, Most Integrated Triple-Band Receivers for T-DMB/DAB/FM Digital Radios
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Key Features
Applications/Uses
Parametric specs for Radio Receivers
| Ref. Clock Freq. (MHz) | 24.576 |
| IF Output Frequency (MHz) | 2.048 |
| Noise Figure (dB) (typ) | 2.9 |
| VSUPPLY (V) | 2.7 to 3.5 |
| ISUPPLY (mA) | 62 |
| End Equipment | DAB T-DMB |
| Solutions | Automotive Consumer |
| Band/ Freq. (MHz) | 168 to 240 1452 to 1492 |
| Footprint (mm x mm) | 6.0 x 6.0 |
| Package/Pins | TQFN/40 |
| Budgetary Price (See Notes) | 3.87 |
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Parameters
Parametric specs for Radio Receivers
| Ref. Clock Freq. (MHz) | 24.576 |
| IF Output Frequency (MHz) | 2.048 |
| Noise Figure (dB) (typ) | 2.9 |
| VSUPPLY (V) | 2.7 to 3.5 |
| ISUPPLY (mA) | 62 |
| End Equipment | DAB T-DMB |
| Solutions | Automotive Consumer |
| Band/ Freq. (MHz) | 168 to 240 1452 to 1492 |
| Footprint (mm x mm) | 6.0 x 6.0 |
| Package/Pins | TQFN/40 |
| Budgetary Price (See Notes) | 3.87 |
Key Features
- +2.7V to +3.5V Supply Voltage Range
- Low-IF Output Eliminates IF-SAW Filter
- Integrated Low-IF Bandpass Filter
- Sigma-Delta Fractional-N Synthesizer
- +45dB Digital ACPR
- 3.5dB Typical Noise Figure for VHF-III (Includes On-Chip Tracking Filter)
- 3.1dB Typical Noise Figure for L-Band
- VHF-III Sensitivity of -100dBm
- L-Band Sensitivity of -99dBm
- Baseband Overload Detector Controls RF AGC
Applications/Uses
- Fixed and Mobile Digital Audio Broadcast (DAB)
- Terrestrial Digital Multimedia Broadcast (T-DMB)
Description
The MAX2170/MAX2171 direct-conversion to low-IF tuners are designed for Digital Audio Broadcast (DAB) and Terrestrial Digital Multimedia Broadcast (T-DMB) applications, covering an input frequency range of 168MHz to 240MHz (VHF-III), 1452MHz to 1492MHz (L-Band), and also 87MHz to 108MHz (FM). The MAX2170/MAX2171 achieve a high level of component integration, allowing low-power, tuner-on-board designs. The direct-conversion to low-IF architecture eliminates the need for an IF-SAW filter while providing a balanced 2.048MHz center frequency baseband output to the demodulator.
The MAX2170 provides a buffered reference clock at the crystal frequency, while the MAX2171 outputs a reference at 1/3rd of the crystal frequency. A sigma-delta fractional-N synthesizer is incorporated to optimize both close-in and wideband phase noise performances for OFDM applications where sensitivity to both 1kHz phase noise and wideband phase noise related to strong adjacents can be a problem.
The MAX2170/MAX2171 are available in a 40-pin thin QFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.
The MAX2170 provides a buffered reference clock at the crystal frequency, while the MAX2171 outputs a reference at 1/3rd of the crystal frequency. A sigma-delta fractional-N synthesizer is incorporated to optimize both close-in and wideband phase noise performances for OFDM applications where sensitivity to both 1kHz phase noise and wideband phase noise related to strong adjacents can be a problem.
The MAX2170/MAX2171 are available in a 40-pin thin QFN package (6mm x 6mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.
Simplified Block Diagram
Technical Docs
Support & Training
Search our knowledge base for answers to your technical questions.
Filtered SearchOur dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal .
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