MAX19994A：Dual, SiGe, High-Linearity, 1200MHz to 2000MHz Downconversion Mixer with LO Buffer/Switch

Lowest Noise, Highest Linearity, 1200MHz to 2000MHz Dual SiGe Mixer Features Superior IP3, NF, and 2LO - 2RF Performance

The MAX19994A dual-channel downconverter is designed to provide 8.4dB of conversion gain, +25dBm input IP3, +14dBm 1dB input compression point, and a noise figure of 9.8dB for 1200MHz to 2000MHz diversity receiver applications. With an optimized LO frequency range of 1450MHz to 2050MHz, this mixer supports both high- and low-side LO injection architectures for the 1200MHz to 1700MHz and 1700MHz to 2000MHz RF bands, respectively. In addition to offering excellent linearity and noise performance, the device also yields a high level of component integration. This device includes two double-balanced passive mixer cores, two LO buffers, a dual-input LO selectable switch, and a pair of differential IF output amplifiers. Integrated on-chip baluns allow for single-ended RF and LO inputs. The MAX19994A requires a nominal LO drive of 0dBm and a typical supply current of 330mA at VCC = 5.0V, or 264mA at VCC = 3.3V. The MAX19994A is pin compatible with the MAX9985/MAX9995/MAX19985A/MAX19993/MAX19995/MAX19995A series of 700MHz to 2500MHz mixers and pin similar with the MAX19997A/MAX19999 series of 1850MHz to 4000MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used across multiple frequency bands. The device is available in a 6mm x 6mm, 36-pin thin QFN package with an exposed pad. Electrical performance is guaranteed over the extended temperature range, from TC = -40°C to +85°C.

Key Features

1200MHz to 2000MHz RF Frequency Range
1450MHz to 2050MHz LO Frequency Range
50MHz to 500MHz IF Frequency Range
8.4dB Typical Conversion Gain
9.8dB Typical Noise Figure
+25dBm Typical Input IP3
+14dBm Typical Input 1dB Compression Point
68dBc Typical 2LO - 2RF Spurious Rejection at PRF = -10dBm
Dual Channels Ideal for Diversity Receiver Applications
47dB Typical Channel-to-Channel Isolation
Low -6dBm to +3dBm LO Drive
Integrated LO Buffer
Internal RF and LO Baluns for Single-Ended Inputs
Built-In SPDT LO Switch with 48dB LO-to-LO Isolation and 50ns Switching Time
Pin Compatible with the MAX9985/MAX9995/MAX19985A/MAX19993/MAX19995/MAX19995A Series of 700MHz to 2200MHz Mixers
Pin Similar to the MAX19997A/MAX19999 Series of 1850MHz to 4000MHz Mixers
Single 5.0V or 3.3V Supply
External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode

MAX19994A: Typical Application Circuit

Applications/Uses

cdma2000® Base Stations
Fixed Broadband Wireless Access
GSM/EDGE Base Stations
Military Systems
Private Mobile Radios
TD-SCDMA Base Stations
WCDMA/LTE Base Stations
Wireless Local Loop

DataSheet

title	Download file
MAX19994A Data Sheet	MAX19994A.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)	3.3V Supply Current (mA)	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)	3.3V Supply Current (mA)	5V Supply Current (mA)	Footprint (mm x mm)	Package/Pins	See Notes
MAX19994A	2	1200	2000	1450	2050	50	500	8.4	25	9.8	68	3.0 to 5.25	264	330	6.0 x 6.0	TQFN/36	$9.98 @1k

Quality and Environmental Data

MAX19994A.pdf

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX19994AETX+	Active	TQFN,;36 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX19994AETX+T	Active	TQFN,;36 pin;37.2 mm²	-40°C to +85°C	Lead Free
MAX19994AEVKIT#	Active	EVKIT;	-40°C to +85°C	See data sheet