MAX3538UTC+ Fast Delivery |IC PHOENIX CO.,LIMITED

MAX3538UTC+ ,Broadband Variable-Gain AmplifiersApplicationsRANGE CODEOpenCable Set-Top Boxes and Televisions MAX3537UTC 0°C to +85°C 12 Thin QFN-E ..
MAX353CSE ,Precision, Quad, SPST Analog Switches
MAX353CSE+ ,Precision, Quad, SPST Analog Switches
MAX354CPE ,Fault-Protected Analog MultiplexersApplicationsMAX354MJE -55°C to +125°C 16 CERDIP**MAX355CPE 0°C to +70°C 16 Plastic DIPData-Acquisit ..
MAX354CPE ,Fault-Protected Analog MultiplexersELECTRICAL CHARACTERISTICS(V+ = +15V, V- = -15V, GND = 0V, V = V = 2.4V, V = V = 0.8V, T = T to T , ..
MAX354CPE+ ,Fault-Protected Analog MultiplexersApplicationsMAX354MJE -55°C to +125°C 16 CERDIP**MAX355CPE 0°C to +70°C 16 Plastic DIPData-Acquisit ..
MAX7219CWG+T ,Serially Interfaced, 8-Digit, LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-♦♦ 10MHz Serial Interfaceput common-catho ..
MAX7219ENG ,Serially Interfaced / 8-Digit LED Display DriversGeneral Description ________
MAX7219ENG+ ,Serially Interfaced, 8-Digit, LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-♦♦ 10MHz Serial Interfaceput common-catho ..
MAX7219EWG ,Serially Interfaced / 8-Digit LED Display DriversFeaturesThe MAX7219/MAX7221 are compact, serial input/out-' 10MHz Serial Interfaceput common-cathod ..
MAX7219EWG ,Serially Interfaced / 8-Digit LED Display DriversApplicationsMAX7219C/D 0°C to +70°C Dice*Bar-Graph DisplaysMAX7219ENG -40°C to +85°C 24 Narrow Plas ..
MAX7219EWG ,Serially Interfaced / 8-Digit LED Display DriversGeneral Description ________

MAX3538UTC+
Broadband Variable-Gain Amplifiers
General Description
The MAX3537/MAX3538 broadband RF variable-gain
amplifiers (VGA) are designed for digital and
OpenCable™ set-tops and televisions. These devices
feature a unique design that integrates a dual-band
(UHF and VHF) input and a low-noise, variable-gain
amplifier. The integrated RF VGA covers a 10MHz to
1GHz input frequency range and provides 22dB of
gain-control range.
The MAX3538 is intended for the most difficult signal
conditions where performance is critical. The external
pullup inductor improves IIP2 and IIP3 while also
increasing gain for better sensitivity. The MAX3537
does not need an external pullup inductor and is ideal
for low-power applications with less demanding receiv-
er distortion requirements such as smaller TVs using
indoor antennas.
The MAX3537/MAX3538 are specified for operation in
the 0°C to +85°C temperature range and are available
in 4mm x 4mm, 12-pin thin QFN packages with
exposed paddle (EP).
Applications
OpenCable Set-Top Boxes and Televisions
Digital Set-Top Boxes
Media Gateways
Digital Terrestrial Receivers
TV IF Strips
FeaturesLow-Noise VGA Eliminates PIN Attenuator22dB Gain-Control RangeLow Noise Figure: 5dB at Maximum Gain SettingHigh Linearity: +19dBm IIP3 (MAX3538) at
Maximum Gain SettingLow Power Consumption: <200mW (MAX3537)Available in a 4mm x 4mm, 12-Pin Thin QFN
Package
MAX3537/MAX3538
Broadband Variable-Gain Amplifiers
19-3445; Rev 1; 6/05
EVALUATION KIT
AVAILABLE
Ordering Information
PARTTEMP
RANGEPIN-PACKAGEPKG
CODE
MAX3537UTC0°C to +85°C12 Thin QFN-EP*T1244-3
MAX3537UTC+0°C to +85°C12 Thin QFN-EP*T1244-3
MAX3538UTC0°C to +85°C12 Thin QFN-EP*T1244-3
MAX3538UTC+0°C to +85°C12 Thin QFN-EP*T1244-311106RF_GND1UHF_SHUNT
LNAOUT
VCC
RFAGC
UHF_IN
RF_GND2GNDVHF_IN
SEL_UHF
RBIASSHDN
MAX3537/3538
Pin Configuration/
Functional Diagram
OpenCable is a trademark of Cable Television Laboratories, Inc.
*EP = Exposed paddle.
+Denotes lead-free package.
MAX3537/MAX3538
Broadband Variable-Gain Amplifiers
ABSOLUTE MAXIMUM RATINGS
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.
VCCto GND...........................................................-0.3V to +5.5V
RFAGC, UHF_IN, SEL_UHF, VHF_IN, SHDN, RBIAS,
RF_GND1, RF_GND2, UHF_SHUNT
to GND....................................................-0.3V to (VCC+ 0.3V)
LNAOUT Short-Circuit Duration..............................................10s
UHFIN, VHFIN Maximum RF Input Power.........................14dBm
Continuous Power Dissipation (TA= +70°C)
12-Pin Thin QFN (derate 16.9mW/°C
above +70°C)............................................................1349mW
Operating Temperature Range...............................0°C to +85°C
Junction Temperature......................................................+150°C
Storage Temperature Range.............................-65°C to +150°C
Lead Temperature (soldering, 10s).................................+300°C
DC ELECTRICAL CHARACTERISTICS
(MAX3537/MAX3538 EV kit, VCC= 4.75V to 5.25V, no RF signal applied, TA= 0°C to +85°C, unless otherwise noted. Typical values
are at VCC= 5V, RBIAS= 11.8kΩ(MAX3537) or 9.1kΩ(MAX3538), TA= +25°C, unless otherwise noted.) (Note 1)
PARAMETERCONDITIONSMINTYPMAXUNITS
Supply Voltage4.755.25V
MAX35373845.8Operational modeMAX35384858mASupply Current
Standby mode (VENABLE = VSEL_UHF = 0.1V)2100µA
RFAGC Input Bias CurrentVRFAGC = 1V and 3V-50+50µA
Maximum gain3RFAGC Control Voltage (Note 2)Minimum gain1V
Input Logic-Level Low0.3 x
VCCV
Input Logic-Level High0.7 x
VCCV
AC ELECTRICAL CHARACTERISTICS (MAX3537)
(MAX3537 EV kit, VCC= 4.75V to 5.25V, TA= 0°C to +85°C, unless otherwise noted. Typical values are at VCC= 5V, RBIAS= 11.8kΩ,= +25°C, unless otherwise noted.) (Note 1)
PARAMETERCONDITIONSMINTYPMAXUNITS
Operating Frequency Range50878MHz
Input Return LossDiplex filter included, worst case across band, any gain
setting (Note 2)4.38.5dB
Input Power Range Per Channel-35+50dBmV
Voltage GainMaximum gain7.79.612.7dB
Linear Gain-Control RangeMeasured at 50MHz, difference between maximum and
minimum gain19.223.1dB
Gain FlatnessFrom 50MHz to 878MHz, VRFAGC = 3V (Note 2)2.8dB
Noise FigureMaximum gain, diplexer loss included5dB
Maximum gain, VRFAGC = 3V (Notes 2, 3)21.626Input 2nd-Order Intercept PointMinimum gain, VRFAGC = 1V42.548dBm
CAUTION! ESD SENSITIVE DEVICE
MAX3537/MAX3538
Broadband Variable-Gain Amplifiers
AC ELECTRICAL CHARACTERISTICS (MAX3537) (continued)
(MAX3537 EV kit, VCC= 4.75V to 5.25V, TA= 0°C to +85°C, unless otherwise noted. Typical values are at VCC= 5V, RBIAS= 11.8kΩ,= +25°C, unless otherwise noted.) (Note 1)
PARAMETERCONDITIONSMINTYPMAXUNITS
Maximum gain, VRFAGC = 3V (Note 4)12.717Input 3rd-Order Intercept PointMinimum gain, VRFAGC = 1V (Note 2)28.233dBm
1dB Compression PointMaximum gain (Note 2)01.9dBm
Shutdown mode, 50MHz to 878MHz, RF input to RF
output37Isolation
Port to port23
dBc
Output Return LossUnbalanced 75Ω load10dB
AC ELECTRICAL CHARACTERISTICS (MAX3538)
(MAX3538 EV kit, VCC= 4.75V to 5.25V, TA= 0°C to +85°C, unless otherwise noted. Typical values are at VCC= 5V, RBIAS= 9.1kΩ,= +25°C, unless otherwise noted.) (Note 1)
PARAMETERCONDITIONSMINTYPMAXUNITS
Operating Frequency Range50878MHz
Input Return LossDiplex filter included, worst case across band, any gain
setting (Note 2)5.48.5dB
Input Power Range Per Channel-35+50dBmV
Voltage GainMaximum gain9.712.415.7dB
Linear Gain-Control RangeMeasured at 50MHz, difference between maximum and
minimum gain1923dB
Gain FlatnessFrom 50MHz to 878MHz, VRFAGC = 3V (Note 2)2.9dB
Noise FigureMaximum gain, diplexer loss included5dB
Maximum gain, VRFAGC = 3V (Notes 2, 3)2734Input 2nd-Order Intercept PointMinimum gain, VRFAGC = 1V47.653dBm
Maximum gain, VRFAGC = 3V (Note 4)15.419Input 3rd-Order Intercept PointMinimum gain, VRFAGC = 1V (Note 2)3033dBm
1dB Compression PointMaximum gain. (Note 2)2.24dBm
Shutdown mode, 50MHz to 878MHz, RF input to RF
output41Isolation
Port to port24
dBc
Output Return LossUnbalanced 75Ω load10dB
Note 1:Guaranteed by production test at TA= +25°C and +85°C and does not include diplex filter loss, unless otherwise noted.
Note 2:Guaranteed by design and characterization from TA= 0°C to +85°C.
Note 3:Tested with input tones at 210MHz and 660MHz at -12dBm/tone. Diplexer is not included.
Note 4:Tested with input tones at 760MHz and 810MHz at -12dBm/tone. Diplexer is not included.
MAX3537/MAX3538
Broadband Variable-Gain Amplifiers
Typical Operating Characteristics
(MAX3537 EV kit with diplex filter removed, VCC= 5V, VRFAGC= 3V, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX3537 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = 0°C
TA = +25°C
TA = +85°C230340450120560
GAIN vs. FREQUENCY
MAX3537 toc02
FREQUENCY (MHz)
GAIN (dB)
TA = +85°C
TA = +25°C
TA = 0°C
GAIN vs. GAIN-CONTROL VOLTAGE
MAX3537 toc03
VRFAGC (V)
GAIN (dB)
fRF = 878MHz
fRF = 50MHz230340450120560
NOISE FIGURE vs. FREQUENCY
MAX3537 toc04
FREQUENCY (MHz)
NOISE FIGURE (dB)
TA = +85°C
TA = +25°C
TA = 0°C
NOISE FIGURE vs. GAIN
MAX3537 toc05
GAIN (dB)
NOISE FIGURE (dB)
fRF = 50MHz
fRF = 878MHz
IIP2 vs. GAIN-CONTROL VOLTAGE
MAX3537 toc06
VRFAGC (V)
IIP2 (dBm)
f1 = 400MHz
f2 = 450MHz
IIP3 vs. VRFAGC
MAX3537 toc07
VRFAGC (V)
IIP3 (dBm)
f1 = 400MHz
f2 = 450MHz
INPUT RETURN LOSS vs. FREQUENCY
MAX3537 toc08
FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
A: TA = +85°C, UHF_IN ENABLED
B: TA = +25°C, UHF_IN ENABLED
C: TA = 0°C, UHF_IN ENABLED
D: TA = +85°C, VHF_IN ENABLED
E: TA = +25°C, VHF_IN ENABLED
F: TA = 0°C, VHF_IN ENABLEDED
WITH DIPLEXER
OUTPUT RETURN LOSS vs. FREQUENCY
MAX3537 toc09
FREQUENCY (MHz)
OUTPUT RETURN LOSS (dB)
A: TA = +85°C, UHF_IN ENABLED
B: TA = +25°C, UHF_IN ENABLED
C: TA = 0°C, UHF_IN ENABLED
D: TA = +85°C, VHF_IN ENABLED
E: TA = +25°C, VHF_IN ENABLED
F: TA = 0°C, VHF_IN ENABLED
WITH DIPLEXER
18.00AB
MAX3537
MAX3537/MAX3538
Broadband Variable-Gain Amplifiers
Typical Operating Characteristics (continued)
(MAX3537 EV kit with diplex filter removed, VCC= 5V, VRFAGC= 3V, TA= +25°C, unless otherwise noted.)
MAX3537
GAIN vs. RBIAS
MAX3537 toc11
RBIAS (kΩ)
GAIN (dB)
fRF = 400MHz
SHUTDOWN ISOLATION
vs. FREQUENCY
MAX3537 toc12
FREQUENCY (MHz)
GAIN (dB)
WITH DIPLEXER
SUPPLY CURRENT AND IIP3 vs. RBIAS
MAX3537 toc10
RBIAS (kΩ)
SUPPLY CURRENT (mA)
CURRENT
IIP3
IIP3 (dBm)
f1 = 400MHz
f2 = 450MHz
PIN = -12dBm/tone
Typical Operating Characteristics
(MAX3538 EV kit with diplex filter removed, VCC= 5V, VRFAGC= 3V, TA= +25°C, unless otherwise noted.)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
MAX3538 toc01
SUPPLY VOLTAGE (V)
SUPPLY CURRENT (mA)
TA = 0°C
TA = +25°C
TA = +85°C230340450120560
GAIN vs. FREQUENCY
MAX3538 toc02
FREQUENCY (MHz)
GAIN (dB)
TA = +85°C
TA = +25°CTA = 0°C
GAIN vs. GAIN-CONTROL VOLTAGE
MAX3538 toc03
VRFAGC (V)
GAIN (dB)
fRF = 878MHz
fRF = 50MHz
MAX3538
MAX3537/MAX3538
Broadband Variable-Gain Amplifiersypical Operating Characteristics (continued)
(MAX3538 EV kit with diplex filter removed, VCC= 5V, VRFAGC= 3V, TA= +25°C, unless otherwise noted.)230340450120560
NOISE FIGURE vs. FREQUENCY
MAX3538 toc04
FREQUENCY (MHz)
NOISE FIGURE (dB)
TA = 0°C
TA = +85°C
TA = +25°C
NOISE FIGURE vs. GAIN
MAX3538 toc05
GAIN (dB)
NOISE FIGURE (dB)
fRF = 50MHz
fRF = 878MHz
IIP2 vs. VRFAGC
MAX3538 toc06
VRFAGC (V)
IIP2 (dBm)
f1 = 400MHz
f2 = 450MHz
IIP3 vs. VRFAGC
MAX3538 toc07
VRFAGC (V)
IIP2 (dBm)
f1 = 400MHz
f2 = 450MHz
INPUT RETURN LOSS vs. FREQUENCY
MAX3538 toc08
FREQUENCY (MHz)
INPUT RETURN LOSS (dB)
A: TA = +85°C, UHF_IN ENABLED
B: TA = +25°C, UHF_IN ENABLED
C: TA = 0°C, UHF_IN ENABLED
D: TA = +85°C, VHF_IN ENABLED
E: TA = +25°C, VHF_IN ENABLED
F: TA = 0°C, VHF_IN ENABLED
A, B, CWITH DIPLEXER
OUTPUT RETURN LOSS vs. FREQUENCY
MAX3538 toc09
FREQUENCY (MHz)
OUTPUT RETURN LOSS (dB)
A: TA = +85°C, UHF_IN ENABLED
B: TA = +25°C, UHF_IN ENABLED
C: TA = 0°C, UHF_IN ENABLED
D: TA = +85°C, VHF_IN ENABLED
E: TA = +25°C, VHF_IN ENABLED
F: TA = 0°C, VHF_IN ENABLED
WITH DIPLEXER
A, B, C
SUPPLY CURRENT AND IIP3 vs. RBIAS
MAX3538 toc10
SUPPLY CURRENT (mA)
CURRENT
IIP3 (dBm)
IIP3
f1 = 400MHz
f2 = 450MHz
PIN = -12dBm/tone
GAIN vs. RBIAS
MAX3538 toc11
GAIN (dB)
fRF = 400MHz
SHUTDOWN ISOLATION
vs. FREQUENCY
MAX3538 toc12
FREQUENCY (MHz)
GAIN (dB)
WITH DIPLEXER
MAX3538

Partno	Mfg	Dc	Qty	Available	Descript
MAX3538UTC+	MAXIM	N/a	1500	avai	Broadband Variable-Gain Amplifiers