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MAX2470EUT+T

P1-P3P4-P6P7-P8
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.
General Description
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 (unbal-
anced) 50Ω loads. The MAX2470 offers a single-ended
input and has two selectable frequency ranges of oper-
ation: 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 perfor-
mance with low power.
These devices are also ideal for use as active baluns.
The MAX2470 converts a single-ended input to a differ-
ential output. The MAX2471 is useful as a differential
buffer stage or to convert from a differential input to two
single-ended outputs.
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 plas-
tic packages, requiring minimal board space.
Applications
Cellular and PCS Mobile Phones
ISM-Band Applications
Active Baluns
General-Purpose Buffers/Amplifiers
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
10MHz to 500MHz VCO Buffer Amplifiers
with Differential Outputs
________________________________________________________________
Maxim Integrated Products
1
OUT
BIAS
V
CC
GND
OUT
50Ω
50Ω
IN
HI/LO
MAX2470
OUT
BIAS
V
CC
GND
OUT
50Ω
50Ω
IN
IN
MAX2471
GND
HI/LO (IN)OUT
( ) ARE FOR MAX2471
16V
CC
5 IN
OUT
MAX2470
MAX2471
SOT23-6
TOP VIEW
2
34
Typical Operating Circuits
19-4797; Rev 0; 2/99
PART
MAX2470EUT-T
MAX2471EUT-T
-40°C to +85°C
-40°C to +85°C
TEMP. RANGE
PIN-
PACKAGE
6 SOT23-6
6 SOT23-6
EVALUATION KIT MANUAL
FOLLOWS DATA SHEET
Pin Configuration
Ordering Information
SOT TOP
MARK
AAAX
AAAY
f
OUT
= 200MHz,
RHI/LO = GND
No signal
MAX2470/MAX2471
10MHz to 500MHz VCO Buffer Amplifiers
with Differential Outputs
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS
(Typical Operating Circuit, V
CC
= +2.7V to +5.5V, T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at V
CC
= +3V,
T
A
= +25°C.) (Note 1)
AC ELECTRICAL CHARACTERISTICS—MAX2470
(V
CC
= +3V, HI/LO = V
CC
, all outputs are differentially measured between OUT and OUT driving a 50Ω load through a 180° hybrid,
T
A
= +25°C, unless otherwise noted.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
CC
to GND..............................................................-0.3V to +7V
IN to GND......-0.3V to (V
CC
+ 0.3V) or 3.7V (whichever is lower)
IN to IN ..................................................................-2.2V to +2.2V
HI/LO to GND.............................................-0.3V to (V
CC
+ 0.3V)
Continuous Power Dissipation
SOT23-6 (derate 8.7mW/°C above +70°C)...................696mW
Operating Temperature Range ...........................-40°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10sec )............................+300°C
VHI/LO = GND or V
CC
CONDITIONS
mA
5.1 7.4
V2.7 5.5V
CC
Supply Voltage Range
µA-10 10I
IN
HI/LO Input Bias Current
3.0 4.5
V2.0V
IH
HI/LO Input Level High
V0.6V
IL
HI/LO Input Level Low
UNITSMIN TYP MAXSYMBOLPARAMETER
HI/LO = V
CC
HI/LO = GND
HI/LO = V
CC
CONDITIONS
14.9
MHz
10 200
f
IN
10 500
Input Frequency Range
(Note 2)
14.9
13.8
14.1
UNITSMIN TYP MAXSYMBOLPARAMETER
HI/LO = V
CC
5.5
HI/LO = GND
3.6
I
CC
Supply Current
f
IN
= 10MHz, HI/LO = GND
R
SOURCE
= 50Ω
V/V16A
V
Voltage Gain (Note 4)
10.2
dB
10.2
NFNoise Figure
8.9 13.3 15.3
HI/LO = GND
dB
9.9 13.4 15.0
IS
21
I
2
Gain (Note 3)
No signal
P
OUT
= -5dBm,
R
LOAD
= 100Ω diff.
No signal
P
OUT
= -5dBm,
R
LOAD
= 100Ω diff.
f
IN
= 10MHz
f
IN
= 200MHz
f
IN
= 500MHz,
T
A
= T
MIN
to T
MAX
f
IN
= 10MHz
f
IN
= 200MHz
f
IN
= 200MHz,
T
A
= T
MIN
to T
MAX
f
OUT
= 500MHz,
HI/LO = V
CC
f
OUT
= 200MHz,
RHI/LO = GND
MAX2470/MAX2471
10MHz to 500MHz VCO Buffer Amplifiers
with Differential Outputs
_______________________________________________________________________________________ 3
AC ELECTRICAL CHARACTERISTICS—MAX2471
(Typical values are measured at V
CC
= +3V, T
A
= +25°C, unless otherwise noted.) (Note 8)
AC ELECTRICAL CHARACTERISTICS—MAX2470 (continued)
(V
CC
= +3V, HI/LO = V
CC
, all outputs are differentially measured between OUT and OUT driving a 50Ω load through a 180° hybrid,
T
A
= +25°C, unless otherwise noted.)
Note 1: Limits are 100% production tested at T
A
= +25°C. Limits over the entire operating temperature range are guaranteed by
design and characterization but are not production tested.
Note 2: The part has been characterized over the specified frequency range. Operation outside of this range is possible but not
guaranteed.
Note 3: Gain specified for P
OUT
= -5dBm.
Note 4: Voltage gain measured with no input termination and no output load.
Note 5: Output VSWR is a single-ended measurement for each OUT and OUT.
Note 6: OUT to IN isolation with OUT terminated with 50Ω.
Note 7: Input terminated with 50Ω.
Note 8: Unless otherwise noted: all inputs are differentially measured between IN and IN driven by a 50Ω load through a 180°
hybrid; all outputs are differentially measured between OUT and OUT driving a 50Ω load through a 180° hybrid.
10MHz < f
OUT
< 500MHz, HI/LO = V
CC
1.5:1
CONDITIONS
10MHz < f
OUT
< 200MHz, HI/LO = GND
1.2:1
VSWR
OUT
Maximum Output VSWR
(OUT, OUT) (Note 5)
UNITSMIN TYP MAXSYMBOLPARAMETER
75
48
f
IN
= 500MHz, HI/LO = V
CC
37
75
f
IN
= 200MHz, HI/LO = GND
dB
45
Isolation OUT to OUT
(Note 7)
HI/LO = V
CC
dB
64
IS
12
I
2
Reverse Isolation
(Note 6)
f
IN
= 200MHz, P
OUT
= -5dBm, HI/LO = GND
dBc
-30
Harmonic Suppression
f
IN
= 500MHz, P
OUT
= -5dBm, HI/LO = V
CC
-26
f
IN
= 100MHz
f
IN
= 500MHz
f
IN
= 100MHz
f
IN
= 200MHz
HI/LO = GND
f
IN
= 10MHz
f
OUT
= 500MHz, R
SOURCE
= 50Ω
f
IN
= 10MHz
dBIS
21
I
2
Gain (Note 3)
V/V16A
V
Voltage Gain (Note 4)
8.4
f
IN
= 200MHz
CONDITIONS
f
IN
= 500MHz, T
A
= T
MIN
to T
MAX
11.3 15.6 17.8
15.9
MHz10 500f
IN
Input Frequency Range
(Note 2)
16.9
UNITSMIN TYP MAXSYMBOLPARAMETER
dBNFNoise Figure
10MHz < f
OUT
< 500MHz 1.5:1VSWR
OUT
Maximum Output VSWR
(OUT, OUT) (Note 5)
f
IN
= 100MHz 74
f
IN
= 500MHz 57
dBIS
12
I
2
Reverse Isolation
f
IN
= 500MHz 35 dB
Isolation OUT to OUT (Note 7)
f
IN
= 500MHz, P
OUT
= -5dBm -29 dBcHarmonic Suppression
P1-P3P4-P6P7-P8

MAX2470EUT+T

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Buy MAX2470EUT+T
Manufacturer:
Maxim Integrated
Description:
RF Amplifier 10MHz - 500MHz VCO Buffer Amp
Lifecycle:
New from this manufacturer.
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