MAX19757
Dual, SiGe, High-Linearity, 1700MHz to 2700MHz Downconversion Mixer with Advanced Shutdown Features
Up to 50% Lower Power Consumption Compared to Legacy Dual Mixers!
Part Details
- 1700MHz to 2700MHz RF Frequency Range
- 1800MHz to 2600MHz LO Frequency Range
- 50MHz to 500MHz IF Frequency Range
- 25.3dBm IIP3
- 8.8dB Conversion Gain
- 13.1dBm Input 1dB Compression Point
- 10.4dB Noise Figure
- 73dBc 2RF–2LO Spurious Rejection at PRF = -10dBm
- Dual Channels Ideal for Diversity Receiver Applications
- Integrated LO Buffer
- -3dBm to +3dBm LO Drive
- Built-In SPDT LO Switch with 50dB LO-to-LO Isolation and 240ns Switching Time
- 46dB Channel Isolation
- Optional On-Chip Detector at IF Output Automatically Adjusts Bias Current for Optimum Power Management
- External Current-Setting Resistors Allow Tradeoff Between Power and Performance
- Advanced Shutdown Features Include:
- Independent Path Power-Down
- Rapid Power-Down/Power-Up Modes for Toggling Between On/Off States in TDD Applications
- Controlled LO Port Impedance Minimizes VCO Pulling During Power Cycling
The MAX19757 dual-channel downconverter is designed to provide 8.8dB gain, +25.3dBm input IP3 and 10.4dB NF for a multitude of 1700MHz to 2700MHz basestation receiver applications. With an optimized LO frequency range of 1800MHz to 2600MHz, this mixer supports both high- and low-side LO injection architectures for 1700MHz to 2200MHz and 2000MHz to 2700MHz RF bands, respectively. Independent path shutdown allows the user to save DC power during low-peak usage times or in TDD TX mode.
The device integrates baluns in the RF and LO ports, an LO buffer, two double-balanced mixers, and a pair of differential IF output amplifiers. The MAX19757 requires a typical LO drive of 0dBm, and a supply current typically 300mA at band center and 350mA across the LO frequency band to achieve the targeted linearity performance.
The MAX19757 is available in a compact 36-pin TQFN package (6mm x 6mm x 0.8mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +105°C temperature range.
Applications
- 2.3GHz WCS Base Stations
- 2.5GHz WiMAX®, LTE, TD-LTE Base Stations
- 2.7GHz MMDS Base Stations
- DCS1800 and PCS1900 and EDGE Base Stations
- Fixed Broadband Wireless Access
- Military Systems
- Private Mobile Radios
- UMTS/WCDMA, TD-SCDMA and cdma2000® 3G Base Stations
- Wireless Local Loop
Documentation
This is the most up-to-date revision of the Data Sheet.
Hardware Ecosystem
| Parts | Product Life Cycle | Description |
|---|---|---|
| I/Q Downconverters/Receivers 4 | ||
| MAX19985A | LAST TIME BUY | Dual, SiGe, High-Linearity, High-Gain, 700MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch |
| MAX19995 | PRODUCTION | Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch |
| MAX19995A | PRODUCTION | Dual, SiGe, High-Linearity, 1700MHz to 2200MHz Downconversion Mixer with LO Buffer/Switch |
| MAX19997A | PRODUCTION | Dual, SiGe High-Linearity, High-Gain, 1800MHz to 2900MHz Downconversion Mixer with LO Buffer/Switch |
| Product 1 | ||
| MAX19999 | Dual, SiGe High-Linearity, 3000MHz to 4000MHz Downconversion Mixer with LO Buffer | |
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