MAX2471：10MHz to 500MHz, VCO Buffer Amplifiers with Differential Outputs

The MAX2470/MAX2471 are flexible, low-cost, high reverse-isolation buffer amplifiers for applications with discrete and module-based VCO designs. Both feature differential 50Ω outputs for driving a single differential (balanced) load or two separate single-ended (unbalanced) 50Ω loads. The MAX2470 offers a single-ended input and has two selectable frequency ranges of operation: 10MHz to 500MHz and 10MHz to 200MHz. The MAX2471 offers a differential input and operates from 10MHz to 500MHz. The MAX2470/MAX2471 also feature high input impedance for maximum flexibility, enabling them to be used with a variety of oscillator topologies. High reverse isolation combined with low supply current make them ideal for applications requiring high performance with low power. These devices are also ideal for use as active baluns. The MAX2470 converts a single-ended input to a differential output. The MAX2471 is useful as a differential buffer stage or to convert from a differential input to two single-ended ouputs. The MAX2470 operates from a single +2.7V to +5.5V supply. At -5dBm output power, it consumes 5.5mA in the high-frequency range and only 3.6mA in the low-frequency range. The MAX2471 operates from a +2.7V to +5.5V single supply and consumes 5.5mA. both devices are available in ultra-small SOT23-6 plastic packages, requiring minimal board space.

Key Features

+2.7V to +5.5V Supply Range
Input Frequency Range
- High: 10MHz to 500MHz (MAX2470/2471)
- Low: 10MHz to 200MHz (MAX2470)
>14dB Power Gain at 200MHz
64dB Typical Reverse Isolation at 200MHz
Low-Distortion Output Drive
Ultra-Small SOT23-6 Package
High Input Impedance
Single-Ended (MAX2470) or Differential (MAX2471) Inputs

MAX2470, MAX2471: Typical Operating Circuits

Applications/Uses

Active Baluns
Cellular and PCS Mobile Phones
General-Purpose Buffers/Amplifiers
ISM-Band Applications

DataSheet

title	Download file
MAX2470-MAX2471 Data Sheet	MAX2470-MAX2471.pdf

Parametrics

Part Number	LO Driver Outputs	PLL Driver Outputs	RF Freq. (MHz)	RF Freq. (MHz)	P_OUT (dBm)	P_OUT (dBm)	V_CC (V)	I_SUPPLY (mA)	Footprint (mm x mm)	Package/Pins	Budgetary Price
Part Number	LO Driver Outputs	PLL Driver Outputs	min	max	min	max	V_CC (V)	I_SUPPLY (mA)	Footprint (mm x mm)	Package/Pins	See Notes
MAX2470	Yes	Yes	10	500	-16	-1	2.7 to 5.5	3.6 to 5.5	2.7 x 2.9	SOT/6	$1.47 @1k
MAX2471	Yes	Yes	10	500	-14	0	2.7 to 5.5	5.5	2.7 x 2.9	SOT/6	$1.25 @1k

Part Number	LO Driver Outputs	PLL Driver Outputs	RF Freq. (MHz)	RF Freq. (MHz)	P_OUT (dBm)	P_OUT (dBm)	V_CC (V)	I_SUPPLY (mA)	Footprint (mm x mm)	Package/Pins	Budgetary Price
Part Number	LO Driver Outputs	PLL Driver Outputs	min	max	min	max	V_CC (V)	I_SUPPLY (mA)	Footprint (mm x mm)	Package/Pins	See Notes
MAX2470	Yes	Yes	10	500	-16	-1	2.7 to 5.5	3.6 to 5.5	2.7 x 2.9	SOT/6	$1.47 @1k

Design kits & evaluation modules

Ordering Information

Part Number	Status	Recommended Replacement	Package	Temp	RoHS
MAX2471EUT+	Active		SOT,;6 pin;9 mm²	-40°C to +85°C	Lead Free
MAX2471EUT+T	Active		SOT,;6 pin;9 mm²	-40°C to +85°C	Lead Free
MAX2471EUT-T	No Longer Available	MAX2471EUT+T	SOT,;6 pin;9 mm²	-40°C to +85°C	No

MAX2470-MAX2471.pdf MAX2471