MAX2314EVKIT [MAXIM]
Evaluation Kit for the MAX2310/MAX2314 ; 评估板MAX2310 / MAX2314\n
| 型号： | MAX2314EVKIT |
| 厂家： | 
MAXIM INTEGRATED PRODUCTS |
| 描述： | Evaluation Kit for the MAX2310/MAX2314
|
| 文件： | 总10页 (文件大小：444K) |
| 中文： | 中文翻译 | 下载： | 下载PDF数据表文档文件 |
19-1507; Rev 1; 12/00
MAX2310/MAX2314 Evaluation Kits
General Description
Features
ꢀ 3-Wire Interface
The MAX2310/MAX2314 evaluation kits (EV kits) simpli-
fy testing of the MAX2310/MAX2314 IF receivers. These
kits allow evaluation of the devices’ variable-gain ampli-
fier (VGA), I/Q demodulator, dual-band voltage-con-
trolled oscillators (VCOs), synthesizer, 3-wire program-
ming interface and power-management features.
Figures 1 and 2 show MAX2310 and MAX2314 kit
schematics, respectively.
ꢀ Differential Baseband Outputs
ꢀ +2.7V to +5.5V Single-Supply Operation
ꢀ SMA Connectors on All Signal Ports
ꢀ Low-Power Shutdown Mode
ꢀ PC Control Software (available at
www.maxim-ic.com)
The EV kits provide 50Ω SMA connectors for all signal
inputs and outputs. A varactor-based tank circuit is pro-
vided for the on-chip VCO and can be tuned by a
potentiometer or an external voltage or phase locked
with the on-chip phase-locked loop (PLL). PC board
pads (J12, J13, J14, J15) are available for installing
low-inductance oscilloscope probe points, if desired.
Ordering Information
PART
TEMP. RANGE IC PACKAGE
-40°C to +85°C 28 QSOP
-40°C to +85°C 28 QSOP
MAX2310EVKIT
MAX2314EVKIT
Note: To evaluate the MAX2312 or MAX2316, order the
MAX2312EVKIT or MAX2316EVKIT.
Component List
DESIGNATION QTY
DESCRIPTION
DESIGNATION QTY
DESCRIPTION
47pF 10ꢀ, 25V min ceramic
capacitors (0402)
10µF 10ꢀ, 16V min tantalum cap
AVX TAJC106K016
C1, C33, C34
C2
3
1
2
1
2
5
C27
C29
1
1
5pF 0.1pF, 25V min ceramic
capacitor (0402)
0.033µF 10ꢀ, 25V min ceramic
capacitor (0402)
18pF 10ꢀ, 25V min ceramic
capacitors (0402)
3300pF 10ꢀ, 25V min ceramic
capacitor (0402)
C3, C4
C5
C30
D1
1
1
1
1.5pF 0.1pF, 25V min ceramic
capacitor (0402) (MAX2310)
Open
Varactor diode
Alpha SMV1255-003
D3
12pF 10ꢀ, 25V min ceramic
capacitors (0402) (MAX2310)
C6, C7
Varactor diode (MAX2310)
Alpha SMV1255-003
D4
1
C8, C12, C23,
C24, C25
330pF 10ꢀ, 25V min ceramic
capacitors (0402)
INTF2300
Interface Board
3-wire programming and interface
board
1
1
1
1
C9, C10, C11,
C13, C14, C15,
C18, C21, C22,
C28, C35, C37,
C38, C42, C46
0.01µF 10ꢀ, 25V min ceramic
capacitors (0402)
68nH inductor
Coilcraft 0805CS-680 XJBC
15
9
L1
L2
L3
18nH inductor (MAX2310)
Coilcraft 0805CS-220 XJBC
C16, C26, C31,
C32, C36, C39,
C40, C41, C45
1µH inductor
Coilcraft 1008CS-102 XKBC
Open
180nH inductor
Coilcraft 0805CS-181TKBC (MAX2310)
10pF 10ꢀ, 25V min ceramic
capacitor (0402)
C17
1
2
L4
L5
1
1
680nH inductor
Coilcraft 0805CS-681TKBC (MAX2314)
8pF 10ꢀ, 25V min ceramic
capacitors (0402)
C19, C20
270nH inductor
Coilcraft 0805CS-271 XKBC
________________________________________________________________ Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
MAX2310/MAX2314 Evaluation Kits
Table 1. Recommended Equipment
Component List (continued)
DESIGNATION QTY
DESCRIPTION
EQUIPMENT
DESCRIPTION
Q1
1
Open
HP 8648A or equivalent. Capable of
delivering -70dBm to -10dBm of out-
put power in the 10MHz to 500MHz
frequency range. One generator is
required to test the receive signal
path and the other is for the refer-
ence frequency.
R1, R10, R12,
R31–R34
6
0Ω resistors (0402)
RF Signal
Generators (2)
R11
R4, R5
1
2
3
1
0Ω resistors (0402) (MAX2310)
10kΩ 5ꢀ (0402) (MAX2310)
10kΩ 5ꢀ resistors (0402)
R2, R3, R23
C43
1000pF 10ꢀ (0402) (MAX2314)
For viewing the demodulator out-
puts, 3-wire serial interface, and
other functions
Oscilloscope
Power Supply
100Ω 5ꢀ resistor (0402)
(MAX2310)
R6
1
4
Capable of providing at least 100mA
at +2.7V to +5.5V
R8, R14, R16,
R18
100Ω 5ꢀ resistors (0402)
R7
R9
1
1
49.9Ω 1ꢀ resistor (0402)
680Ω 1ꢀ resistor (0402)
Additional Voltage
Source
For external control of VGA functions
(optional)
486DX33 or better, with Windows95®
or Windows98® operating system and
a functional parallel port.
10kΩ Bourns variable resistors
Digi-Key 3296W-104-ND
R13, R24
2
Personal Computer
R15, R17, R19,
R20, R21, R25,
R27–R30, R35
INTF2300 Interface
Board
11
Open
Provided with EV kit
Windows95 and Windows98 are registered trademarks
of Microsoft Corp.
R22, R26
2
1
47kΩ 5ꢀ resistors (0402)
Balun transformer
Toko DB458-1011
T1
Recommended Test Equipment
The test equipment recommended to verify MAX2310/
MAX2314 operation is listed in Table 1. This list is
intended as a guide only; substitutions may be possi-
ble.
Maxim MAX2310EEI or
MAX2314EEI IC
U1
1
1
1
1
None
None
None
MAX2310/MAX2314 circuit board
MAX2310/MAX2312/MAX2314/
MAX2316 data sheet
Connections and Setup
The following sections provide instructions for getting
the EV kit running in both the CDMA and FM modes.
20-pin ribbon cable
Component Suppliers
CDMA Mode
Perform the following steps to evaluate the MAX2310/
MAX2314 in CDMA mode:
SUPPLIER
Alpha Industries
AVX
PHONE
FAX
617-935-5150
803-946-0690
847-639-6400
218-681-6674
949-852-2001
708-297-0070
617-933-2359
803-626-3123
847-639-1469
218-681-3380
949-852-2002
708-699-1194
1) Verify that shunts JU3, JU10, and JU11 are in place.
2) Connect the INTF2300 interface cable as shown in
Figure 8. (Pin 1 of the interface cable corresponds
to the red wire; pin 1 is designated in silk screen on
each of the PC boards.)
Coilcraft
Digi-Key
Murata
3) Connect a +2.75V power supply to the V
GND terminals.
and
CC
Toko
4) Install and run Maxim’s CDMA control software
(available at www.maxim-ic.com). Click on the
Maxim CDMA software on the Windows task bar.
On the IC selection form, click on the MAX2310/
MAX2314 control button.
Quick Start
The MAX2310/MAX2314 EV kits are fully assembled
and factory tested. Follow the instructions in the
Connections and Setup section.
2
_______________________________________________________________________________________
MAX2310/MAX2314 Evaluation Kits
5) With the MAX2310/MAX2314 control screen active,
Adjustments and Control
bring the SHDN pin high by clicking on the "H" con-
VGC Adjust
The MAX2310/MAX2314 EV kits are configured with a
10kΩ trim pot for setting and adjusting the VGA gain.
An external supply can be used by removing the 2-pin
shunt (JU3) and by directly connecting the supply to
JU2. The VGC voltage must be clean to minimize unde-
sired amplitude modulation.
trol button located near the middle of the screen.
6) (MAX2310 only) With the MAX2310/MAX2314 con-
trol screen active, bring the MODE pin high by
clicking on the "H" control button located near the
middle of the screen. The mode pin is floated on
the MAX2314 board. In the control register set the
DIV_SEL bit and the VCO_SEL bit to “0.” Click on
the “send data” button.
7) Connect a function generator to the REF port, con-
figured for a sine wave with a 19.68MHz frequency
and a -10dBm amplitude. (The REF port is 50Ω ter-
minated.)
Interface Control
The interface port is designed to use a 20-pin ribbon
cable. Ten pins are signal lines, and the other 10 pins
are digital grounds. Pin 1 of the interface cable is red.
Pin 1 is also designated in silk screen on each of the
PC boards.
8) Connect a signal generator with 210.48MHz
(MAX2310) or 85.48MHz (MAX2314) at -66dBm and
apply it to the CDMA differential port.
Detailed Description
The following sections cover the EV kits’ circuit blocks
in detail. (Refer to the MAX2310/MAX2312/MAX2314/
MAX2316 data sheet for additional information.)
9) Set VGC to 2.5VDC by rotating potentiometer R13.
Optionally, an external VGC voltage may be used
by removing jumper JU3 and applying a DC volt-
age to JU2.
10) Configure an oscilloscope to measure a high-
impedance (10kΩ), 1Vp-p, 100kHz differential
waveform. Connect it to the I or Q output.
CDMA Inputs
The CDMA+ and CDMA- pins are differential inputs to
the VGAs of the MAX2310/MAX2314. The EV kit is con-
figured for single-ended (50Ω) operation at the CDMA
differential input connector. The on-board balun con-
verts this input to a differential signal for the
MAX2310/MAX2314. The impedance is set by the com-
bination of L4, R9, C19, C20, and the 4:1 impedance
ratio of the input balun.
Voltage gain can be calculated by:
V
OUTp−p
Gain = 20log
2 2V
IN
FM Inputs
The FM+ and FM- pins are differential inputs to the
VGAs of the MAX2310/MAX2314. The EV kit is config-
ured for single-ended (50Ω) operation at the FM con-
nector. The matching network transforms 50Ω to 850Ω.
PIN(dBm)
10
V (RMS) = 1/2×10
IN
Gain = approximately 60dB
Note: The balun loss is not taken into account. This loss
is typically less than 0.5dB.
REF Inputs
The REF port is AC-coupled and terminated for use
with a 50Ω signal source.
FM Mode
Perform the following steps to change to FM mode:
I/Q Outputs
1) With the MAX2310/MAX2314 control screen active,
bring the MODE pin low by clicking on the "L" con-
trol button located near the middle of the screen
(MAX2310). Set the IN_SEL bit to "0." Click on the
“send data” button (MAX2314).
The I/Q outputs are self-biased baseband outputs.
PC Board Layout/Construction
The MAX2310/MAX2314 EV kits can serve as board
layout guides. Keep PC board trace lengths as short as
possible to minimize parasitics. Keep decoupling
capacitors close to the device, with a low-inductance
via connection to the ground plane.
2) Connect a signal generator with 85.48MHz at -66dBm
and apply it to the FM port.
3) Configure an oscilloscope to measure a high-
impedance (10kΩ), 1Vp-p, 100kHz, differential
waveform. Connect it to the I or Q output.
The MAX2310/MAX2314 EV kits’ PC boards use 14mil-
wide traces for 50Ω traces. The PC board has an 8mil-
layer profile on FR4, with a 4.5 dielectric and 75mil
trace-to-ground-plane spacing.
_______________________________________________________________________________________
3
MAX2310/MAX2314 Evaluation Kits
Figure 1. MAX2310EV Kit Schematic
4
_______________________________________________________________________________________
MAX2310/MAX2314 Evaluation Kits
Figure 1. MAX2310EV Kit Schematic (continued)
_______________________________________________________________________________________
5
MAX2310/MAX2314 Evaluation Kits
Figure 2. MAX2314EV Kit Schematic
6
_______________________________________________________________________________________
MAX2310/MAX2314 Evaluation Kits
Figure 2. MAX2314EV Kit Schematic (continued)
_______________________________________________________________________________________
7
MAX2310/MAX2314 Evaluation Kits
1.0"
1.0"
Figure 3. MAX2310/MAX2314 EV Kit Component Side—
Layer 1
Figure 4. MAX2310/MAX2314 EV Kit Ground Plane—Layer 2
1.0"
Figure 5. MAX2310/MAX2314 EV Kit Inner Layer—Layer 3
8
_______________________________________________________________________________________
MAX2310/MAX2314 Evaluation Kits
1.0"
1.0"
Figure 6. MAX2310/MAX2314 EV Kit Solder Side—
Layer 4
Figure 7. MAX2310/MAX2314 EV Kit Silk Screen
_______________________________________________________________________________________
9
MAX2310/MAX2314 Evaluation Kits
also provides buffering and EMI filtering. The recom-
INTF2300
mended operating supply voltage range is +2.7V to
+3.6V. For operation of the MAX2310/MAX2314 above
+3.6V, jumper JU1 may be removed and an external
Interface Board
The INTF2300 interface board is used to control the 3-
wire interface of a device under test from the parallel
port of a PC. This board level translates 5V logic from
supply voltage of +3.6V may be applied between V
(pin 2) and GND (pin 1) (Figure 8).
CC
the PC to V
of the device under test. The INTF2300
CC
GND
1
V
CC
JU1
2
3
DB25M
1
1
TO PC
PARALLEL
PORT
20
6
10
INTF2300
10
DUT
MAX2310
MAX2314
V
D
CC
6
20
1
1
Figure 8. INTF2300 Interface Board
Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are
implied. Maxim reserves the right to change the circuitry and specifications without notice at any time.
10 ____________________Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600
© 2000 Maxim Integrated Products
Printed USA
is a registered trademark of Maxim Integrated Products.
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