max2473 Maxim Integrated Products, Inc., max2473 Datasheet

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max2473

Manufacturer Part Number
max2473
Description
500mhz To 2500mhz, Vco Buffer Amplifiers
Manufacturer
Maxim Integrated Products, Inc.
Datasheet

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Part Number
Manufacturer
Quantity
Price
Part Number:
max2473EUT
Manufacturer:
MAXIM
Quantity:
5 321
Part Number:
max2473EUT+T
Manufacturer:
MAXIM
Quantity:
18 000
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 V
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.
19-1466; Rev 0; 6/99
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.
Typical Operating Circuits appear at end of data sheet.
TOP VIEW
( ) ARE FOR MAX2473.
Cellular and PCS Mobile Phones
Private Mobile Radios
ISM-Band Applications
IF/RF Oscillators
General-Purpose Buffers/Amplifiers
OUT2 (BIAS)
OUT1 (OUT)
GND
________________________________________________________________ Maxim Integrated Products
1
2
3
General Description
SOT23-6
MAX2472
MAX2473
Pin Configuration
CC
= +3.0V and -25dBm
4
6
5
Applications
V
GND
IN
CC
MAX2472EUT-T
MAX2473EUT-T -40°C to +85°C
VCO Buffer Amplifiers
+2.7V to +5.5V Supply Range
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
PART
500MHz to 2500MHz
IN
IN
MAX2473
MAX2472
-40°C to +85°C
GND
RANGE
TEMP.
GND
V
Ordering Information
Functional Diagrams
CC
BIAS
V
CC
BIAS
PACKAGE
6 SOT23-6
6 SOT23-6
PIN-
GND
Features
GND
TOP MARK
AAAZ
AABA
SOT
OUT2
OUT1
BIAS
OUT
1

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max2473 Summary of contents

Page 1

... 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 V = +3.0V and -25dBm CC input power, the MAX2472 consumes 5.2mA, while the MAX2473 consumes only 2 ...

Page 2

... A CONDITIONS MAX2472 MAX2473 23kΩ BIAS MAX2473 11kΩ BIAS MAX2472 No drive MAX2473, R BIAS MAX2473, R BIAS = -25dBm, IN driven from a 50Ω source, OUT1 and OUT2 LC matched to 50Ω CONDITIONS f = 600MHz 900MHz +25° 900MHz, T ...

Page 3

... CC +25°C, unless otherwise noted.) PARAMETER SYMBOL Reverse Isolation S (IN to OUT1) Noise Figure Isolation (OUT1 to OUT2) Harmonic Suppression AC ELECTRICAL CHARACTERISTICS—MAX2473 ( Typical Operating Circuits , V = +3V +25°C, unless otherwise noted.) PARAMETER SYMBOL Input Frequency Range (Note 2) Transducer Gain S Output 1dB Compression Point ...

Page 4

... VCO Buffer Amplifiers (MAX2472/MAX2473 EV kit +3V SUPPLY CURRENT vs. TEMPERATURE 7 -20dBm 900MHz IN 6 5.0 4.0 -40 - TEMPERATURE (° vs. OUTPUT POWER 900MHz 2400MHz FOR OUT1 WITH OUT2 REACTIVELY MATCHED AND TERMINATED 0 -20 ...

Page 5

... EV kit +3V _______________________________________________________________________________________ 500MHz to 2500MHz VCO Buffer Amplifiers Typical Operating Characteristics (continued) = +25°C, unless otherwise noted.) A MAX2472 SCATTERING PARAMETERS (IN to OUT 2) 5 ...

Page 6

... VCO Buffer Amplifiers (MAX2472/MAX2473 EV kit +3V SUPPLY CURRENT vs. R BIAS BIAS 2 S vs. OUTPUT POWER 1900MHz 11k BIAS 15k ...

Page 7

... EV kit +3V REVERSE ISOLATION vs 900MHz IN -35 -40 -45 -50 -55 - BIAS 600MHz 900MHz IN (3 UNITS FULL SCALE 1900MHz 15k BIAS 2400MHz IN _______________________________________________________________________________________ 500MHz to 2500MHz VCO Buffer Amplifiers Typical Operating Characteristics (continued) = +25° ...

Page 8

... VCO Buffer Amplifiers (MAX2472/MAX2473 EV kit +3V _______________________________________________________________________________________ Typical Operating Characteristics (continued) = +25°C, unless otherwise noted.) A MAX2473 SCATTERING PARAMETERS (IN to OUT) ...

Page 9

... Using values for R from 11kΩ to 23kΩ allows the output power of BIAS the MAX2473 to range from -2dBm to -10dBm. Pin Description FUNCTION via a resistor or CC via a resistor or ...

Page 10

... blocking capacitor. Figure 2 shows an equiva- lent circuit of the MAX2472/MAX2473 OUT pin(s). Figure 3 shows an equivalent circuit of the MAX2473 BIAS pin. Table 1 lists recommended values for lumped-element output matching circuits at certain frequencies. For fre- quencies other than those specified, use the parame- ters given in the Typical Operating Characteristics ...

Page 11

... Proper connection of the GND pins is essential to achieving maximum reverse isolation. If the PC board MAX2472 VCO IN 100pF MAX2473 VCO IN 100pF ______________________________________________________________________________________ 500MHz to 2500MHz VCO Buffer Amplifiers lines uses a topside RF ground, connect both GND pins CC directly to it ...

Page 12

VCO Buffer Amplifiers 12 ______________________________________________________________________________________ Package Information Chip Information TRANSISTOR COUNT: 109 ...

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