MAX2170ETL+T ,Direct-Conversion to Low-IF Tuners for Digital Audio BroadcastFeaturesThe MAX2170 evaluation kit (EV kit) simplifies evalua-♦ Easy Evaluation of the MAX2170tion ..
MAX2172ETL , 5GHz, 5-Channel MIMO Receiver
MAX218CAP ,1.8V to 4.25V-Powered, True RS-232 Dual TransceiverELECTRICAL CHARACTERISTICS(Circuit of Figure 1, V = 1.8V to 4.25V, C1 = 0.47µF, C2 = C3 = C4 = 1µF, ..
MAX218CAP+ ,1.8V to 4.25V Powered, True RS-232 Dual TransceiverFeaturesThe MAX218 RS-232 transceiver is intended for battery-BETTER THAN BIPOLAR!powered EIA/TIA-2 ..
MAX218CWP ,1.8V to 4.25V-Powered, True RS-232 Dual TransceiverFeaturesThe MAX218 RS-232 transceiver is intended for battery-BETTER THAN BIPOLAR!powered EIA/TIA-2 ..
MAX218EAP ,1.8V to 4.25V-Powered, True RS-232 Dual TransceiverMAX21819-0246; Rev 1; 7/951.8V to 4.25V-Powered,True RS-232 Dual Transceiver_______________
MAX527DCWG+ ,Calibrated, Quad, Voltage-Output, 12-Bit DACApplications
Minimum Component Count Analog Systems
Digital Offset/Gain Adjustment
Arbitrary F ..
MAX528CAG ,Octal, 8-Bit, Serial DACs with Output BufferELECTRICAL CHARACTERISTICS - MAX528
(Unbuffered Mode: VDD = +12V, Vss = OV; Full-Buffered Mode: ..
MAX528CAG ,Octal, 8-Bit, Serial DACs with Output BufferGeneral Description
The MAX528/MAX529 are monolithic devices combining
an octal 8-bit, digital- ..
MAX528CPP ,Octal, 8-Bit, Serial DACs with Output BufferFeatures
' Now Available in Space-Saving SSOP
' 8 Buffered Noninverting Outputs
' Buffer D ..
MAX528CPP+ ,Octal, Serial, 8-Bit DAC with Output BuffersFeatures
' Now Available in Space-Saving SSOP
' 8 Buffered Noninverting Outputs
' Buffer D ..
MAX528CWG ,Octal, 8-Bit, Serial DACs with Output BufferApplications
Digital Gain and Offset Adjustment
Digital Calibration
Multiple Trim Pot Replac ..
MAX2170ETL+T
Direct-Conversion to Low-IF Tuners for Digital Audio Broadcast
General DescriptionThe MAX2170 evaluation kit (EV kit) simplifies evalua-
tion of the MAX2170 direct-conversion to low-IF tuner. It
enables testing of the device’s performance and
requires no additional support circuitry. Standard 50Ω
SMA and BNC connectors are included on the EV kit for
the inputs and outputs to allow quick and easy evalua-
tion on the test bench. The EV kit is fully assembled and
tested at the factory.
This document provides a list of equipment required to
evaluate the device, a straightforward test procedure to
verify functionality, a description of the EV kit circuit, the
circuit schematic, a bill of materials (BOM) for the kit,
and artwork for each layer of the PCB.
FeaturesEasy Evaluation of the MAX2170+2.7V to +3.5V Single-Supply Operation50ΩΩ
SMA Connector on the RF Ports50ΩΩ
BNC Connector for the Baseband OutputJumpers for Automatic Gain ControlAll Critical Peripheral Components IncludedParallel Port for I2C InterfacingPC Control Software Available at
Evaluates: MAX2170
MAX2170 Evaluation Kit19-0711; Rev 0; 12/06
Component List
Ordering Information
PARTTEMP RANGEIC PACKAGEMAX2170EVKIT+-40°C to +85°C40 QFN-EP*
DESIGNATIONQTYDESCRIPTION118pF ±5% capacitor (0402)
Murata GRM1555C1H180J
C2, C6, C46,
C47, C71, C72,
C73330pF ±10% capacitors (0402)
Murata GRM155R71H331K
C3, C14, C1731.0µF ±10% capacitors (0402)
Murata GRM155R60J105K1100µF ±20% capacitor (1210)
AVX 1210D107MAT14.7µF ±20% capacitor (0805)
Murata GRM21BF51A475Z
C7, C18, C22,
C38, C39, C4161000pF ±5% capacitors (0402)
Murata GRM1555C1H102J
C8, C13, C16,
C20, C28, C2960.01µF ±10% capacitors (0402)
Murata GRM155R71C103K
C9, C10, C15,
C19, C21, C31,
C40, C42, C44,
C45, C750.1µF ±10% capacitors (0402)
Murata GRM155R61A104K
C11, C1220.33µF ±10% capacitors (0603)
DESIGNATIONQTYDESCRIPTIONC231100pF ±5% capacitor (0402)
Murata GRM1555C1H101J
C24, C25, C26,
C30, C32–C37,
C43, C48Not installed, capacitors
C27133pF ±5% capacitor (0402)
Murata GRM1555C1H330J
C761
10µF ±10% tantalum capacitor
(C-case)
AVX TAJC106K0161Super-mini Schottky diode
Central Semi CMDSH2-3 (lead free)1BNC 50Ω vertical mount
A/D Electronics 580-002-000Not installed
J3, J42
SMA end-launch jack receptacles,
0.062in
Johnson 142-0701-801
J131DB25 right-angle male connector
AMP 5747238-4
JP10Not installed
+Denotes a lead-free and RoHS-compliant EV kit.
*EP = Exposed paddle.
Evaluates: MAX2170
MAX2170 Evaluation Kit
Component List (continued)
DESIGNATIONQTYDESCRIPTIONJP311 x 2 in-line header, 100-mil center
Sullins PEC36SAAN
JP4, JP1021 x 3 in-line headers, 100-mil center
Sullins PEC36SAAN1Not installed
L3, L4291nH ±5% inductors (0603CS)
Murata LQW18AN91NJ00
Q1, Q2, Q33NPN 1GHz wideband transistors
Philips BFS17W1270Ω ±5% resistor (0402)
R2, R621kΩ ±1% resistors (0402)
R3, R9–R12,
R18, R41, R428100Ω ±5% resistors (0402)
R4, R522kΩ ±1% resistors (0402)
R7, R35, R39312kΩ ±5% resistors (0402)
R8, R37, R46,
R4742.7kΩ ±5% resistors (0402)
R13127.4kΩ ±1% resistor (0402)
R14, R4325.1kΩ ±5% resistors (0402)
R15, R16, R19,
R25, R27, R28,
R29Not installed, resistors
R17, R20, R21,
R22, R24510kΩ ±5% resistors (0402)
R23149.9Ω ±1% resistor (0402)
DESIGNATIONQTYDESCRIPTIONR2610Ω ±5% resistor (0402)
R3016.2kΩ ±5% resistor (0402)
R31, R3324.7kΩ ±5% resistors (0402)
R3211kΩ ±5% resistor (0402)
R341160kΩ ±5% resistor (0402)
R36, R38239kΩ ±5% resistors (0402)1MAX2170ETL+1MAX4453ESA+ single-supply op
amp with rail-to-rail outputs1Hex buffer/driver
Texas Instruments SN74LV07ADB1MAX4729EXT+ low-voltage, SPDT
CMOS analog switch124.576MHz crystal
TXC Corporation 7B24500140
BB+, BB-,
HOLD_AGC,
J5, J14, MUX,
REF, VDET,
VGC_BB,
VGC_RF,
VTUNEPC mini (red)
Keystone 5000
GND, J15, TP1,
TP24PC mini (black)
Keystone 50011MAX2170EVKIT+ PCB
Component SuppliersSUPPLIER PHONE FAX WEBSITEAVX Corp. 843-448-9411 843-448-7139 www.avxcorp.comCentral Semiconductor Corp. 631-435-1110 631-435-1824 www.centralsemi.comCoilcraft, Inc. 847-639-6400 847-639-1469 www.coilcraft.comMurata Mfg. Co., Ltd. 770-436-1300 770-436-3030 www.murata.comPhilips 800-447-1500 — www.nxp.comTexas Instruments Inc. 800-336-5236 — www.ti.comTXC Technology 714-990-5510 714-990-5520 www.txc.com.tw
Note: Indicate that you are using the MAX2170 when contacting these component suppliers.
Quick Start
Recommended EquipmentThis section lists the recommended test equipment to
verify operation of the MAX2170. It is intended as a
guide only, and some substitutions are possible:One RF signal generator capable of delivering at
least +5dBm of output power at the operating fre-
quency (HPE4433B or equivalent)An RF spectrum analyzer that covers the MAX2170
operating-frequency range (e.g., FSEB20)A power supply capable of up to 1A at +2.7V to
+6.0VOne ammeter for measuring the supply current
(optional)
•50ΩSMA cables
•50ΩBNC cablesA network analyzer (e.g., HP 8753D) tomeasure
small-signal return loss (optional)
Procedure
Measurement ConsiderationsThe MAX2170 EV kit includes an on-board buffer that
converts the baseband differential outputs to a single-
ended output (see Figure1 for details). The buffer is
configured for a gain of one. The output of the buffer
consists of a 50Ωresistor in series for matching to RF
test equipment. Note that there is a 6dB loss at the out-
put if 50Ωtest equipment is used. This loss must be
accounted for when measuring gain.
Connections and SetupThe MAX2170 EV kit is fully assembled and tested. This
section provides a step-by-step guide to operating the
EV kit and testing the device’s function. Caution:Do
not turn on the DC power or RF signal generators until
all connections are made:Connect a DC supply set to +3.0V (through an
ammeter if desired) to the VCC and GND terminals
on the EV kit. Do not turn on the supply. Note that
VCC and VCC2 on the EV kit board are shorted
together through JP3.Connect a DC supply set to +2.4V (maximum gain)
to the RFAGC terminal on the EV kit. Do not turn on
the supply.Connect a DC supply set to +2.4V (maximum gain)
to the BBAGC terminal on the EV kit. Do not turn on
the supply.Connect one RF signal generator to either the VHF-
III, FM, or L-BAND input through the SMA connec-
tors J3 and J4, respectively. Do not turn on the gen-
erator’s output.Connect the baseband output on the EV kit to a
spectrum analyzer through a BNC cable.Connect the EV kit board to the PC through a paral-
lel cable.Turn on the DC supply. The supply current should
read approximately 70mA.Run the control software on an IBM-compatible PC.
Using the control software, configure the following:Select the desired band of operation and chan-
nel through the
Blocksection of the software’s
graphical interface.Based on the LO frequency, the EV kit software
automatically sets the appropriate tracking-filter
settings in VHF/FM mode.The power-detector threshold is factory-calibrat-
ed to a typical input power of -52dBm. This infor-
mation is stored in bits <7:5> of register 00 in the
ROM table. The EV kit software automatically
loads the information stored in bits <7:5> of reg-
ister 00 in the ROM tableinto bits <7:5> in regis-
ter 08 to set the proper power-detector
response.The baseband filter is factory-trimmed to have a
typical bandwidth (-3dB corner) at 0.8 MHz. The
information is stored in bits <2:0> of register 04
in the ROM table. The EV kit software automati-
cally loads the information stored in bits <2:0> of
register 04 in the ROM tableinto bits <2:0> in
register 08 to set proper baseband filter band-
width.The VCO Auto Selection (VAS) is already
enabled through default settings (this allows the
software to pick the appropriate VCO sub-band
for the desired operation frequency). If desired,
the VAS can be turned off to manually select the
desired sub-band. VAS can be disabled through
the VAS_EN bit on the Registersor Blocksec-
tion of the software.Activate and set the power level of the RF generator
to achieve 1VP-Pat the IF connector output or
0.5VP-P(-2dBm) when loaded by a 50Ωinstrument.
Evaluates: MAX2170
MAX2170 Evaluation Kit
Evaluates: MAX2170 Note the 6dB loss at the output ports of the EV kit
due to the 50Ωresistor in series at the buffer out-
puts and the 50Ωload of the test equipment.
Gain ControlThe RF and baseband VGA circuits of the MAX2170
are controlled independently through jumpers JP10
and JP4, respectively. Connecting pins 2-3 of JP10
closes the RF gain control loop. The MAX2170 EV kit
also implements a control loop for the baseband VGA
through shorting pins 1-2 of JP4. The HOLD_AGC con-
trols the MAX4729 analog switch (see Figure1 for
schematic details). In typical applications, the demodu-
lator controls the baseband VGA. The analog switch
and the external AGC circuitry (Q1, Q2, and Q3) are
optional components and only needed when the
demodulator lacks a baseband AGC control circuit.
Layout IssuesA good PCB is an essential part of an RF circuit design.
The EV kit PCB serves as a guide for laying out a board
using the MAX2170. Keep traces carrying RF signals
as short as possible to minimize radiation and insertion
loss. Use impedance control on all RF signal traces.
The exposed paddle must be soldered evenly to the
board’s ground plane for proper operation. Use abun-
dant vias beneath the exposed paddle and between RF
traces to minimize undesired RF coupling.
To minimize coupling between different sections of the
IC, each VCCpin must have a bypass capacitor with low
impedance to the closest ground at the frequency of
interest. Do not share ground vias among multiple con-
nections to the PCB ground plane. Refer to the Layout
section of the MAX2170 data sheet for more information.
MAX2170 Evaluation Kit
Evaluates: MAX2170
MAX2170 Evaluation Kit
Evaluates: MAX2170
MAX2170 Evaluation KitFigure 2. MAX2170 EV Kit Component Placement Guide—Component Side
