19-1466; Rev 0; 6/99
5 0 0 MHz t o 2 5 0 0 MHz
VCO Bu ffe r Am p lifie rs
/MAX2473
Ge n e ra l De s c rip t io n
Fe a t u re s
♦ +2.7V to +5.5V Supply Range
The MAX2472/MAX2473 are flexible, wideband, high-
reverse-isolation buffer amplifiers. The MAX2472 has dual
open-collector outputs capable of delivering -5dBm into
50Ω while maintaining harmonic suppression below
-25dBc. The MAX2473 has a single open-collector output
with a bias control pin to vary output power from -10dBm
to -2dBm while maintaining harmonic suppression below
-25dBc. The MAX2472/MAX2473’s combination of high
reverse isolation and low supply current makes them ideal
for applications requiring high performance with low
power. They feature high input impedance and open-col-
lector outputs for maximum flexibility, enabling them to be
used with a variety of oscillator topologies.
♦ 500MHz to 2500MHz Input Frequency Range
♦ High Reverse Isolation: 49dB at 900MHz
♦ Dual Open-Collector Outputs (MAX2472)
♦ Adjustable -10dBm to -2dBm Output Power
Control (MAX2473)
♦ High Input Impedance: >250Ω at 900MHz
♦ Ultra-Small SOT23-6 Package
Ord e rin g In fo rm a t io n
Both the MAX2472 and MAX2473 operate from a single
+2.7V to +5.5V supply. With V
= +3.0V and -25dBm
CC
TEMP.
PIN-
SOT
input power, the MAX2472 consumes 5.2mA, while the
MAX2473 consumes only 2.7mA. Both devices are avail-
able in a tiny 6-pin SOT23 package requiring minimal
board space.
PART
RANGE
PACKAGE TOP MARK
MAX2472EUT-T -40°C to +85°C
MAX2473EUT-T -40°C to +85°C
6 SOT23-6
6 SOT23-6
AAAZ
AABA
Ap p lic a t io n s
Cellular and PCS Mobile Phones
Private Mobile Radios
Fu n c t io n a l Dia g ra m s
V
CC
ISM-Band Applications
BIAS
IF/RF Oscillators
OUT2
OUT1
General-Purpose Buffers/Amplifiers
MAX2472
IN
Typical Operating Circuits appear at end of data sheet.
GND
GND
P in Co n fig u ra t io n
V
CC
BIAS
OUT
TOP VIEW
BIAS
OUT1 (OUT)
GND
1
2
3
6
5
4
V
CC
MAX2473
MAX2472
MAX2473
GND
IN
IN
OUT2 (BIAS)
GND
GND
SOT23-6
( ) ARE FOR MAX2473.
________________________________________________________________ Maxim Integrated Products
1
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800.
For small orders, phone 1-800-835-8769.