MAX9986A：SiGe High-Linearity, 815MHz to 1000MHz Downconversion Mixer with LO Buffer/Switch

Fully Integrated Downconverter Delivers 8.2dB of Gain, +25dBm of IIP3, 10dB of Noise Figure, and 69dBc of 2LO - 2RF Rejection while Replacing a Mixer, Two Amps, Two Baluns, an LO Switch, Plus Dozens of Discretes!

The MAX9986A high-linearity downconversion mixer provides 8.2dB gain, +25dBm IIP3, and 10dB NF for 815MHz to 1000MHz base-station receiver applications. With a 960MHz to 1180MHz LO frequency range, this particular mixer is ideal for high-side LO injection receiver architectures. Low-side LO injection is supported by the MAX9984, which is pin-for-pin and functionally compatible with the MAX9986A. In addition to offering excellent linearity and noise performance, the MAX9986A also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, a dual-input LO selectable switch, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX9986A requires a nominal LO drive of 0dBm, and supply current is guaranteed to be below 250mA. The MAX9986A is a derivative version of the MAX9986 with improved large-signal blocking performance. The MAX9984/MAX9986/MAX9986A are pin compatible with the MAX9994/MAX9996 1700MHz to 3000MHz mixers, making this entire family of downconverters ideal for applications where a common PC board layout is used for both frequency bands. The MAX9986A is also functionally compatible with the MAX9993. The MAX9986A is available in a compact, 20-pin, thin QFN package (5mm x 5mm) with an exposed paddle. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Key Features

815MHz to 1000MHz RF Frequency Range
960MHz to 1180MHz LO Frequency Range (MAX9986A/MAX9986)
570MHz to 850MHz LO Frequency Range (MAX9984)
50MHz to 250MHz IF Frequency Range
8.2dB Conversion Gain
+25dBm Input IIP3
+14.8dBm Input 1dB Compression Point
10dB Noise Figure
69dBc 2LO-2RF Spurious Rejection at PRF = -10dBm
Integrated LO Buffer
Integrated RF and LO Baluns for Single-Ended Inputs
Low -3dBm to +3dBm LO Drive
Built-In SPDT LO Switch with 49dB LO1 to LO2 Isolation and 50ns Switching Time
Pin Compatible with MAX9994/MAX9996 1700MHz to 3000MHz Mixers
Functionally Compatible with MAX9993
External Current-Setting Resistors Provide Option for Operating Mixer in Reduced Power/Reduced Performance Mode
Lead-Free Package Available

MAX9986A: Typical Application Circuit

Applications/Uses

850MHz WCDMA Base Stations
cdmaOne™ and cdma2000® Base Stations
Digital and Spread-Spectrum Communication Systems
Fixed Broadband Wireless Access
GSM 850/GSM 900 2G and 2.5G EDGE Base Stations
iDEN® Base Stations
Microwave Links
Military Systems
Predistortion Receivers
Private Mobile Radios
Wireless Local Loops

DataSheet

title	Download file
MAX9986A Data Sheet	MAX9986A.pdf

Parametrics

Part Number	Channels	RF Freq. (MHz)	RF Freq. (MHz)	LO Freq. (MHz)	LO Freq. (MHz)	IF Freq. (MHz)	IF Freq. (MHz)	Gain (dB)	Input IP3 (dBm)	Noise Figure (dB)	2RF-2LO/ 2LO-2RF (dBc)	V_CC (V)	5V Supply Current (mA)	Footprint (mm x mm)	Package/Pins	Budgetary Price
Part Number	Channels	min	max	min	max	min	max	Gain (dB)	Input IP3 (dBm)	Noise Figure (dB)	2RF-2LO/ 2LO-2RF (dBc)	V_CC (V)	5V Supply Current (mA)	Footprint (mm x mm)	Package/Pins	See Notes
MAX9986A	1	815	1000	960	1180	50	250	8.2	25	10	69	4.75 to 5.25	213	5.0 x 5.0	TQFN/20	$7.19 @1k