MAX19757 Datasheet, PDF (1/34 Pages) Maxim Integrated Products – Dual, SiGe, High-Linearity, 1700MHz to 2700MHz Downconversion Mixer

MAX19757
Dual, SiGe, High-Linearity,
1700MHz to 2700MHz Downconversion Mixer
with Advanced Shutdown Features
General Description
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 dif-
ferential 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 frequen-
cy 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
● UMTS/WCDMA, TD-SCDMA and cdma2000® 3G
Base Stations
● DCS1800 and PCS1900 and EDGE Base Stations
● Fixed Broadband Wireless Access
● Wireless Local Loop
● Private Mobile Radios
● Military Systems
Ordering Information appears at end of data sheet.
For related parts and recommended products to use with this part, refer
to www.maximintegrated.com/MAX19757.related.
Benefits and Features
● 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 P_RF = -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
WiMAX is a registered certification mark and registered
service mark of WiMAX Forum.
cdma2000 is a registered trademark of Telecommunications
Industry Association.
19-6280; Rev 0; 12/12