MAX2411AEEI ,Low-Cost RF Up/Downconverter with LNA and PA DriverApplicationsPin ConfigurationPWT1900 DECTDCS1800/PCS1900 ISM-Band TransceiversTOP VIEWPHS/PACS Irid ..
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MAX2411AEEI
Low-Cost RF Up/Downconverter with LNA and PA Driver
________________General DescriptionThe MAX2411A performs the RF front-end transmit/
receive function in time-division-duplex (TDD) communi-
cation systems. It operates over a wide frequency range
and is optimized for RF frequencies around 1.9GHz.
Applications include most popular cordless and PCS
standards. The MAX2411A includes a low-noise amplifier
(LNA), a downconverter mixer, a local-oscillator buffer, an
upconverter mixer, and a variable-gain power-amplifier
(PA) driver in a low-cost, plastic surface-mount package.
The MAX2411A’s unique bidirectional, differential IF port
reduces cost and component count by allowing the trans-
mit and receive paths to share the same IF filter.
The LNA has a 2.4dB typical noise figure and a -10dBm
input third-order intercept point (IP3). The downconvert-
er mixer has a low 9.2dB noise figure and 4dBm input
IP3. Image and local-oscillator filtering are implemented
off-chip for maximum flexibility. The PA driver amplifier
has 15dB of gain, which can be reduced over a 35dB
range. Power consumption is only 60mW in receive
mode and 90mW in transmit mode and drops to less
than 3µW in shutdown mode.
For applications requiring separate, single-ended IF
input and output ports, refer to the MAX2410 data
sheet. For applications requiring only a receive func-
tion, Maxim offers a low-cost downconverter with LNA
(see the MAX2406 data sheet).
________________________ApplicationsPWT1900DECT
DCS1800/PCS1900ISM-Band Transceivers
PHS/PACSIridium Handsets
____________________________FeaturesLow-Cost Silicon Bipolar DesignIntegrated Upconvert/Downconvert FunctionOperates from a Single +2.7V to +5.5V Supply3.2dB Combined Receiver Noise Figure:
2.4dB (LNA)
9.2dB (mixer)Flexible Power-Amplifier Driver:
18dBm Output Third-Order Intercept (OIP3)
35dB Gain-Control RangeLO Buffer for Low LO Drive LevelLow Power Consumption:
60mW Receive
90mW Full-Power Transmit0.3µW Shutdown ModeFlexible Power-Down Modes Compatible with
MAX2510/MAX2511 IF Transceivers
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
Typical Operating Circuit appears on last page.
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
ABSOLUTE MAXIMUM RATINGS
DC ELECTRICAL CHARACTERISTICS(VCC= +2.7V to +5.5V, VGC= +3.0V, RXEN = TXEN = 0.6V, PADROUT pulled up to VCCwith 50Ωresistor; IF, IFpulled up to VCC
with 50Ωresistor, TXMXOUT pulled up to VCCwith 125Ωresistor, LNAOUT pulled up to VCCwith 100Ωresistor, all RF inputs open,= -40°C to +85°C. Typical values are at +25°C and VCC= +3.0V, unless otherwise noted.)
AC ELECTRICAL CHARACTERISTICS(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment,
fLO= 1.5GHz, PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm,
fIF, IF= 400MHz, PIF= -32dBm (Note 1), TA= +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.
VCCto GND................................................................-0.3V to 6V
LNAIN Input Power...........................................................15dBm
LO, LOInput Power..........................................................10dBm
PADRIN Input Power.........................................................10dBm
RXMXIN Input Power........................................................10dBm
IF, IFInput Power (transmit mode)...................................10dBm
Voltage at RXEN, TXEN, GC.......................-0.3V to (VCC+ 0.3V)
Continuous Power Dissipation (TA= +70°C)
QSOP (derate 11mW/°C above +70°C)........................909mW
Junction Temperature......................................................+150°C
Operating Temperature Range...........................-40°C to +85°C
Storage Temperature.........................................-65°C to +165°C
Lead Temperature (soldering, 10sec).............................+300°C
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
AC ELECTRICAL CHARACTERISTICS (continued)(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment,
fLO= 1.5GHz, PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm,
fIF, IF= 400MHz, PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C,
unless otherwise noted.)
Note 1:Power delivered to IF SMA connector of MAX2411A EV kit. Power delivered to MAX2411A IC is approximately 1.0dB less
due to balun losses.
Note 2:Guaranteed by design and characterization.
Note 3:Two tones at 1.9GHz and 1.901GHz at -32dBm per tone.
Note 4:Two tones at 1.9GHz and 1.901GHz at -22dBm per tone.
Note 5:Mixer operation guaranteed to this frequency. For optimum gain, adjust output match. See the Typical Operating
Characteristicsfor graphs of IF port impedance versus IF frequency.
Note 6:At this LO drive level, the mixer conversion gain is typically 1dB lower than with -10dBm LO drive.
Note 7:Two tones at 400MHz and 401MHz at -32dBm per tone.
Note 8:Transmit mixer output at -17dBm.
Note 9:Calculated from measurements taken at VGC= 1.0V and VGC= 1.5V.
Note 10:Time from RXEN = low to RXEN = high transition until the combined receive gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on LNAIN and LNAOUT.
Note 11:Time from TXEN = low to TXEN = high transition until the combined transmit gain is within 1dB of its final value. Measured
with 47pF blocking capacitors on PADRIN and PADROUT.
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
__________________________________________Typical Operating Characteristics(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment,
fLO= 1.5GHz, PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm,
fIF, IF= 400MHz, PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C,
unless otherwise noted.)
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
_____________________________Typical Operating Characteristics (continued)(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment, fLO= 1.5GHz,
PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm, fIF, IF= 400MHz,
PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C, unless otherwise noted.)
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
_____________________________Typical Operating Characteristics (continued)(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment, fLO= 1.5GHz,
PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm, fIF, IF= 400MHz,
PIF= -32dBm (Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C, unless otherwise noted.)
MAX2411A
Low-Cost RF Up/Downconverter
with LNA and PA Driver
_____________________________Typical Operating Characteristics (continued)(MAX2411A EV kit, VCC= +3.0V, VGC= +2.15V, RXEN = TXEN = low, all measurements performed in 50Ωenvironment, fLO= 1.5GHz,
PLO= -10dBm, fLNAIN= fPADRIN= fRXMXIN= 1.9GHz, PLNAIN= -32dBm, PPADRIN= PRXMXIN= -22dBm, fIF, IF= 400MHz, PIF= -32dBm
(Note 1), all impedance measurements made directly to pin (no matching network), TA= +25°C, unless otherwise noted.)
