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PDF MAX2472 Data sheet ( Hoja de datos )
| Número de pieza | MAX2472 | |
| Descripción | 500MHz to 2500MHz VCO Buffer Amplifiers | |
| Fabricantes | Maxim Integrated | |
| Logotipo |  |
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19-1466; Rev 0; 6/99
EVFAOLLULAOTWIOSNDKAITTAMSAHNEUEATL
500MHz to 2500MHz
VCO Buffer Amplifiers
General Description
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.
Both the MAX2472 and MAX2473 operate from a single
+2.7V to +5.5V supply. With VCC = +3.0V and -25dBm
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.
Features
o +2.7V to +5.5V Supply Range
o 500MHz to 2500MHz Input Frequency Range
o High Reverse Isolation: 49dB at 900MHz
o Dual Open-Collector Outputs (MAX2472)
o Adjustable -10dBm to -2dBm Output Power
Control (MAX2473)
o High Input Impedance: >250Ω at 900MHz
o Ultra-Small SOT23-6 Package
Ordering Information
PART
TEMP.
RANGE
MAX2472EUT-T -40°C to +85°C
MAX2473EUT-T -40°C to +85°C
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
SOT
TOP MARK
AAAZ
AABA
Applications
Cellular and PCS Mobile Phones
Private Mobile Radios
ISM-Band Applications
IF/RF Oscillators
General-Purpose Buffers/Amplifiers
Typical Operating Circuits appear at end of data sheet.
Functional Diagrams
VCC
BIAS
MAX2472
IN
OUT2
OUT1
GND GND
Pin Configuration
TOP VIEW
OUT1 (OUT) 1
6 VCC
MAX2472
GND 2 MAX2473 5 GND
VCC
BIAS
MAX2473
IN
BIAS
OUT
OUT2 (BIAS) 3
4 IN
( ) ARE FOR MAX2473.
SOT23-6
GND GND
________________________________________________________________ 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.
1 page  
500MHz to 2500MHz
VCO Buffer Amplifiers
Typical Operating Characteristics (continued)
(MAX2472/MAX2473 EV kit, VCC = +3V, TA = +25°C, unless otherwise noted.)
MAX2472
SCATTERING PARAMETERS
(IN to OUT 2)
_______________________________________________________________________________________ 5
5 Page 
500MHz to 2500MHz
VCO Buffer Amplifiers
as close to the VCC pin as possible. For long VCC lines
(inductive), it may be necessary to add additional
decoupling capacitors located farther away from the
device package.
Proper connection of the GND pins is essential to
achieving maximum reverse isolation. If the PC board
uses a topside RF ground, connect both GND pins
directly to it. For a board where the ground plane is not
on the component side, the best technique is to con-
nect the GND pins to the board with plated through-
holes (vias) to the ground plane, located as close to the
package as possible.
Typical Operating Circuits
VCC VCC
VCC
BIAS
VCO
IN
100pF
MAX2472
0.01µF
GND
1.0µF
30pF
LMATCH
OUT2
CMATCH
OUT1
CMATCH
GND
LMATCH
0.01µF
TO MIXER
TO MIXER OR PLL
30pF
VCC
0.01µF
VCC
VCC
BIAS
VCO
IN
100pF
MAX2473
0.01µF
1.0µF
BIAS
RBIAS
CMATCH
TO
MIXER
GND GND
LMATCH
30pF
VCC
0.01µF
______________________________________________________________________________________ 11
11 Page | ||
| Páginas | Total 12 Páginas | |
| PDF Descargar | [ Datasheet MAX2472.PDF ] | |
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