MAX19998：SiGe, High-Linearity, 2300MHz to 4000MHz Downconversion Mixer with LO Buffer

Lowest Noise, Highest Linearity 2300MHz to 4000MHz SiGe Mixer for LTE, WiMAX and MMDS Base Stations, Featuring Superior IIP3, NF and 2 x 2 Performance

The MAX19998 single, high-linearity downconversion mixer provides 8.7dB of conversion gain, +24.3dBm input IP3, +11.3dBm 1dB input compression point, and a noise figure of 9.7dB for 2300MHz to 4000MHz WiMAX™, LTE, and MMDS receiver applications. With an ultra-wide LO 2600MHz to 4300MHz frequency range, the MAX19998 can be used in either low-side or high-side LO injection architectures for virtually all 2.5GHz and 3.5GHz applications. For a 2.5GHz variant tuned specifically for high-side injection, refer to the MAX19996A. In addition to offering excellent linearity and noise performance, the MAX19998 also yields a high level of component integration. This device includes a double-balanced passive mixer core, an IF amplifier, and an LO buffer. On-chip baluns are also integrated to allow for single-ended RF and LO inputs. The MAX19998 requires a nominal LO drive of 0dBm, and supply current is typically 230mA at VCC = 5.0V or 150mA at VCC = 3.3V. The MAX19998 is pin compatible with the MAX19996/MAX19996A 2000MHz to 3900MHz mixer family. The device is also pin similar with the MAX9984/MAX9986/MAX9986A 400MHz to 1000MHz mixers and the MAX9993/MAX9994/MAX9996 1700MHz to 2200MHz mixers, making this entire family of downconverters ideal for applications where a common PCB layout is used for multiple frequency bands. The MAX19998 is available in a compact, 5mm x 5mm, 20-pin thin QFN with an exposed pad. Electrical performance is guaranteed over the extended -40°C to +85°C temperature range.

Key Features

2300MHz to 4000MHz RF Frequency Range
2600MHz to 4300MHz LO Frequency Range
50MHz to 500MHz IF Frequency Range
8.7dB Conversion Gain
9.7dB Noise Figure
+24.3dBm Typical Input IP3
+11.3dBm Typical Input 1dB Compression Point
67dBc Typical 2RF - 2LO Spurious Rejection at PRF = -10dBm
Integrated LO Buffer
Integrated RF and LO Baluns for Single-Ended Inputs
Low -3dBm to +3dBm LO Drive
Pin Compatible with the MAX19996/MAX19996A 2000MHz to 3900MHz Mixers
Pin Similar with the MAX9984/MAX9986/MAX9986A Series of 400MHz to 1000MHz Mixers and the MAX9993/MAX9994/MAX9996 Series of 1700MHz to 2200MHz Mixers
Single 5.0V or 3.3V Supply
External Current-Setting Resistors Provide Option for Operating Device in Reduced-Power/Reduced-Performance Mode

MAX19998: Typical Application Circuit

Applications/Uses

2.5GHz WiMAX and LTE Base Stations
2.7GHz MMDS Base Stations
3.5GHz WiMAX and LTE Base Stations
Fixed Broadband Wireless Access
Military Systems
Private Mobile Radios
Wireless Local Loop

DataSheet

title	Download file
MAX19998 Data Sheet	MAX19998.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
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
MAX19998	1	2300	4000	2600	4300	50	500	8.7	24.3	9.7	67	3.0 to 5.25	150	230	5.0 x 5.0	TQFN/20

Ordering Information

Part Number	Status	Package	Temp	RoHS
MAX19998ETP+	Active	TQFN,;20 pin;26 mm²	-40°C to +85°C	Lead Free
MAX19998ETP+T	Active	TQFN,;20 pin;26 mm²	-40°C to +85°C	Lead Free
MAX19998EVKIT#	No Longer Available	EVKIT;	-40°C to +85°C	See data sheet

MAX19998.pdf MAX19998

MAX19998_cn.pdf MAX19998