MAX2681：400MHz to 2.5GHz, Low-Noise, SiGe Downconverter Mixers

The MAX2680/MAX2681/MAX2682 miniature, low-cost, low-noise downconverter mixers are designed for low-voltage operation and are ideal for use in portable communications equipment. Signals at the RF input port are mixed with signals at the local oscillator (LO) port using a double-balanced mixer. These downconverter mixers operate with RF input frequencies between 400MHz and 2500MHz, and downconvert to IF output frequencies between 10MHz and 500MHz. The MAX2680/MAX2681/MAX2682 operate from a single +2.7V to +5.5V supply, allowing them to be powered directly from a 3-cell NiCd or a 1-cell Lithium battery. These devices offer a wide range of supply currents and input intercept (IIP3) levels to optimize system performance. Additionally, each device features a low-power shutdown mode in which it typically draws less than 0.1µA of supply current. Consult the Selector Guide for various combinations of IIP3 and supply current. The MAX2680/MAX2681/MAX2682 are manufactured on a high-frequency, low-noise, advanced silicon-germanium process and are offered in the space-saving 6-pin SOT23 package.

Key Features

400MHz to 2.5GHz Operation
+2.7V to +5.5V Single-Supply Operation
Low Noise Figure: 6.3dB at 900MHz (MAX2680)
High Input Third-Order Intercept Point (IIP3 at 2450MHz)
- -6.9dBm at 5.0mA (MAX2680)
- +1.0dBm at 8.7mA (MAX2681)
- +3.2dBm at 15.0mA (MAX2682)
< 0.1µA Low-Power Shutdown Mode
Ultra-Small Surface-Mount Packaging

MAX2680, MAX2681, MAX2682: Typical Operating Circuit

Applications/Uses

400MHz/900MHz/2.4GHz ISM-Band Radios
Cell Phones/Cordless Phones
IEEE 802.11 and Wireless Data
Personal Communications Systems (PCS)
Wireless Local Loop (WLL)

DataSheet

title	Download file
MAX2680-MAX2682 Data Sheet	MAX2680-MAX2682.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)	V_CC (V)	3.3V 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)	V_CC (V)	3.3V Supply Current (mA)	Footprint (mm x mm)	Package/Pins	See Notes
MAX2680	1	400	2500	400	2500	10	500	11.6	-12.9	6.3	2.7 to 5.5	5	2.7 x 2.9	SOT/6	$0.72 @1k
MAX2681								14.2	-6.1	7		8.7		SOT/6	$0.88 @1k
MAX2682								14.7	-1.8	6.5		15		SOT/6	$0.92 @1k

Design kits & evaluation modules

Quality and Environmental Data

MAX2681.pdf

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX2681EUT+	Active		SOT,;6 pin;9 mm²	-40°C to +85°C	Lead Free
MAX2681EUT+T	Active		SOT,;6 pin;9 mm²	-40°C to +85°C	Lead Free
MAX2681EUT-T	No Longer Available	MAX2681EUT+T	SOT,;6 pin;9 mm²	-40°C to +85°C	No