MAX2769 Evaluation Kit
Evaluates: MAX2769
General Description
The MAX2769 evaluation kit (EV kit) simplifies evaluation
of the MAX2769 universal GPS receiver. It enables
testing of the device performance and requires no additional
support circuitry. Standard 50Ω SMA connectors are
included on the EV kit for the inputs and outputs to allow
for quick and easy evaluation on the test bench. The
evaluation kit is fully assembled and tested at the factory.
This document provides a component list, 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, and artwork for each layer of
the printed circuit board (PCB).
Quick Start
The MAX2769 EV kit includes two on-board MAX8510
linear regulators for powering up the MAX2769 device to a
regulated supply voltage of +2.85V. When using the linear
regulators, connect pins 1-2 of jumpers W16 and W17.
The MAX2769 can also be powered directly through an
external power supply through pin 2 of the jumpers (see
Figure 1
for details).
Required Test Equipment
This section lists the recommended test equipment to
verify operation of the MAX2769. 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 frequency
(e.g., HP E4433B or equivalent)
An RF spectrum analyzer that covers the MAX2769
operating frequency range (e.g., FSEB20, or equivalent)
A power supply capable of up to 1A at +2.7V to +6V
One ammeter for measuring the supply current
(optional)
50Ω SMA cables
A network analyzer (e.g., HP 8753D or equivalent) to
measure small-signal return loss (optional)
A dual power supply capable of delivering up to 1A
at ±5V
A user-supplied IBM-compatible PC
Oscilliscope or logic analyzer to measure digital outputs
(optional)
Features
●
Easy Evaluation of the MAX2769 IC
●
+2.7V to +3.3V Single-Supply Operation
● 50Ω SMA Connector on the RF Ports and for the
Baseband Outputs
●
All Critical Peripheral Components Included
●
Parallel Port for 3-Wire Interfacing
● PC Control Software Available Upon Request
•
•
•
•
•
•
Ordering Information
PART
MAX2769EVKIT#
#Denotes RoHS-compliant
TYPE
EV Kit
•
•
19-8782; Rev 0; 3/17
MAX2769 Evaluation Kit
Evaluates: MAX2769
Connections and Setup
This section provides
the EV kit and testing
not turn on the DC
until all connections
a step-by-step guide to operating
the device functions.
Caution: Do
power or RF signal generators
are completed.
1) Connect the PC to the INTF3000 interface board
using the USB cable. On the INTF3000, remove
jumper JU1, and connect a DC supply set to +3V to
the VPULL connector. Connect the 25-pin connector
of the INTF3000 (J4) directly to the 25-pin connector
of the EV kit (JDR1).
2) Connect a DC supply set to +3V (through an ammeter
if desired) to jumpers W19 and W20 on the EV kit. Do
not turn on the supply. When using the on-board linear
regulators to power the MAX2769, connect pins 1-2 of
jumpers W16 and W17.
3) Connect a DC supply set to +5V to jumper W12 on the
EV kit. Connect a DC supply set to -5V to jumper W11
on the EV kit. Do not turn on the supply.
4) Make sure that jumpers W1–W9 and W18 are shorted
for proper supply connection.
5) Leave jumpers W13, W14, W15, and W28 open
and connect jumper W23 to ground (pins 1-2) if the
MAX2769 is evaluated using a 3-wire bus.
6) Set the signal generator to 1575.42MHz, -110dBm.
Do not turn on the generator’s output. Connect the RF
signal generator to the LNA1 input.
7) Connect LNA_OUT SMA connector (J8) to the MIX_IN
SMA connector (J12) on the EV kit.
8) Connect the output of the MAX4444 buffer (connector
J3) on the EV kit to a spectrum analyzer.
9) Turn on the DC supply. The supply current should
read approximately
20mA.
10) Visit
HERE
to download the latest version of the EV
kit software,
MAX2769A_Setup_2-0-1.exe.
Run the
installation file.
11) Run the control software on an IBM-compatible PC.
Load the default state by clicking Settings, then
defaults, also set the
SHDN
and
IDEL
pins to 1, under
“Entry” page, Hardware Control section. Upon device
power-up, the default state should set the MAX2769
device in automatic-gain-control mode (AGCMODE
= 00, PGAIEN = 1, and PGAQEN = 0). The default
configuration will set the center frequency to 3.9MHz
and a bandwidth of 2.5MHz. Using the control
software, configure the following:
a) In the “Entry” page of the graphical user interface
(GUI), set the reference frequency to 16.368MHz.
b) Set the R divider to 16.
c) Enable the I and Q channels by setting the
IQ enable = 1.
d) Set the “output level” to 1X = analog outputs
through the “Entry” page or configuration register 2.
12) Activate the RF generator and observe the IF signal at
4.092MHz at an I_OUT_ANA SMA connector J3.
13) Set the “output level” to 00 = CMOS logic through the
“Entry” page and observe the ADC digital output at
J9A–J9D header pins.
Layout Issues
A good PCB is an essential part of an RF circuit design.
The EV kit PCB can serve as a guide for laying out
a board using the devices. 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
abundant throughputs beneath the exposed paddle and
between RF traces to minimize undesired RF coupling.
To minimize coupling between different sections of the
IC, each V
CC
pin must have a bypass capacitor with
low impedance to the closest ground at the frequency
of interest. Do not share ground vias among multiple
connections to the PCB ground plane. Refer to the
Layout
Issues
section of the MAX2769 IC data sheet for more
information.
www.maximintegrated.com
Maxim Integrated
│
2
MAX2769 Evaluation Kit
Evaluates: MAX2769
Component Suppliers
SUPPLIER
AVX Corp.
Murata Mfg. Co., Ltd.
Rakon Ltd.
Texas Instruments
www.avx.com
www.murata.com
www.rakon.com
www.ti.com
WEBSITE
Note:
Indicate that you are using the MAX2769 when contacting these component suppliers.
MAX2769 Evaluation Kit Bill of Materials
DESIGNATION
C1–C4, C7, C16–C19, C21, C22, C23,
C41–C45, C48, C49, C50, C53, C54, C55
C5, C8–C12, C14, C31, C40, C56, C67
C6, C61, C62
C15, C25, C27, C29, C30, C57, C58, C65
C24
C26, C36
C28
C32–C35, C37, C38, C39, C58, C66, C68, C69
C46, C47, C51, C52
C59, C60, C63, C64, C70
J1, J2, J3, J6, J7, J8, J10, J11, J12
J9
JDR1
L2, L3
R1, R26–R29, R35–R43, R56
R2, R10, R17, R21, R22, R23, R31–R34, R44–R55, R57, R59,
R60, R66, R67, R68, R71
R4, R24, R25
R5–R9, R30, R61–R65, R69, R70
R11, R14, R15
R12, R13, R18, R19
R16
R20
QTY
23
11
3
8
1
2
1
0
4
5
9
1
1
0
0
29
3
13
3
4
1
1
DESCRIPTION
0.1µF ±10% capacitors (0402)
Murata GRM155R61A104K
100pF ±5% capacitors (0402)
Murata GRM1555C1H101J
10µF ±10% tantalum capacitors (B case)
AVX TAJB106K016
0.01µF ±10% capacitors (0402)
Murata GRM155R71C103K
27pF ±5% capacitor (0402)
Murata GRM1555C1H270J
6800pF ±10% capacitors (0402)
Murata GRM155R71H682K
470pF ±10% capacitor (0402)
Murata GRM155R71H471K
Not installed, capacitors
10pF ±5% capacitors (0402)
Murata GRM1555C1H10R0J
1.0µF ±10% capacitors (0402)
Murata GRM155R60J105K
SMA end-launch jack
receptacles, 0.062in
Johnson 142-0701-801
2 x 5 dual inline header, 100-mil center
Sullins PEC36DAAN
DB25 right-angle male connector
AMP 5747238-4
Not installed, inductors
Not installed, resistors
0Ω ±5% resistors (0402)
20kΩ ±5% resistors (0402)
10kΩ ±1% resistors (0402)
47.5Ω ±1% resistors (0402)
75Ω ±1% resistors (0402)
22.1Ω ±1% resistor (0402)
100kΩ ±1% resistor (0402)
www.maximintegrated.com
Maxim Integrated
│
3
MAX2769 Evaluation Kit
Evaluates: MAX2769
MAX2769 Evaluation Kit Bill of Materials (continued)
DESIGNATION
T1, T2, T3
TP1–TP5, TP10, TP11, TP15
U1, U2
U8
U10, U11, U28
U12, U18
U14
U21
U23
W1–W12, W18, W19, W20, W28
W13–W17, W23
Y2
—
QTY
0
8
2
1
0
2
1
1
1
16
6
0
17
DESCRIPTION
Not installed
PC mini-red test points
Keystone 5000
MAX8510EXK29+ ultra-low-noise, high PSRR, low-dropout,
120mA linear regulators
16.368MHz TCXO
Rakon IT3205BE
Not installed
MAX4444ESE+ ultra-high-speed, low-distortion, differential-
to-single-ended line receivers
MAX4447ESE+ 6500V/µs wideband, high-output-current,
single-ended-to-differential line driver
MAX2769ETI+ low-power, single-conversion, low-IF GPS
receiver
SN74LV07ADR hex buffer/driver with open-drain output
Texas Instruments SN74LV 07ADR
1 x 2 inline headers, 100-mil center
Sullins PEC36SAAN
1 x 3-inline headers, 100-mil center
Sullins PEC36SAAN
Not installed
Shorting jumpers, gold finish contact
(W1–W9, W13–W18, W23, W28)
Sullins SSC02SYAN
www.maximintegrated.com
Maxim Integrated
│
4
5
C39
3
T2
4
R58 0
I_OUT
1
J3
I_OUT_ANA
2
1
6
ADTT4-1 C49
1
VCC1
VCC2
IN-
NC1
NC2
IN+
VEE7
VEE8
C43
100n
3
2
+5
100n
2
3
R25
20k
C47
10pF
R22 0
C52
10pF
R21 0
4
5
6
C45
100n
-5
7
8
IN-
NC1
NC2
IN+
VEE7
VEE8
VCC2
1
VCC1
U12
MAX4444ESE+
GND
OUT
VEE1
VEE2
VEE3
VEE4
REF
EN
5
EN
9
+5
R68
0
REF
10
VEE4
11
-5
VEE3
12
VEE2
13
C54
100n
VEE1
14
OUT
15
GND
2
3
4
5
6
7
8
-5
16
R15
47.5
100n
R2 0
10pF
C51
C46
R23 0
C44
100n
J9B
OUT
10pF
GND
R28
100k
C33
8p
4
3
I+_OUT
R49 0
R48 0
R24
20k
5 4 3 2
+5
U18
MAX4444ESE+
5
R44 0
C32
8p
C66
R47 0
4
OPEN
100n
R41 1k
3
OPEN
OPEN
OPEN
J9A
OUT
GND
R39 1k
2
R29
100k
1
I-_OUT
2
1
RF_LNA2_IN
J6
1
C36
OPEN
OPEN
OPEN
100n
OPEN
R35
OPEN
200
2
3
G
CG2
RF_LNA1_IN
C68
A
5
0 ohm
TP4
INN
C26
6.8n
1
5 4 3 2
6.8n
IN
CG5
IDLE_B
6
27
25
26
24
23
75
U21
GND
21
20
19
18
C11
0.1u
17
L3 12u
VCC_D
C25
1
10n
J11
CLK_OUT
C15
C27
C65
10n Y2
OPEN
R1
5 4 3 2
1
10n
2
3
REF_IN
NC2
R13
75
28
22
TP1
A
ANT_FLAG
1
OUT
6
R27
100k
C34
8p
0
R54
100n
1k
5
R53 0
PGM
/IDLE
TSENS
VCC_IF
J8
3
2
G
CG2
1
C40 100P
Q-_OUT
R40
C16
5 4 3 2
0.1u
I1_OUT
CG5
IN
C5 100p
C50 0.1u
5
MIX_IN
Q1_OUT
VCC_RF
4
VCC_RF
Q0_OUT
Interposer Part # 9500-0019-2
5 4 3 2
D
10
9
R11
47.5
R19
R20
100k
C37
VEE4
J9C
11
C30
10n
A
1
TP2
T_SEN
C31
100p
VCC_IF
IN
100n
VEE3
W28
OPEN
OPEN
OPEN
OPEN
8p
R38
200
-5
7
1
6
T3
ADTT4-1
C48
16
15
14
13
12
11
10
9
C42
100n
+5
R67
0
-5
C53
100n
VEE5
OUT+
5 4 3 2
R66
0
R42
0
U11
SAFEB1G57KA0F00R1S
4
OUT
1
LNA_OUT
ANT_BIAS
VDD_ADC
VCC_ADC
C4
100p
OPEN
1
ANT_FLAG
2
I0_OUT
LNA_IN1
OUT_BYP
C18
0.1u
OPEN
OPEN
3
T1
4
5
R36
200
OPEN
MAX2769ETI+
2
3
5
1
6
ADTT4-1
VCC_A
2
5
1
C22
J12
10n
DATA
CLK
CS_B
1
8
9
10
11
12
13
5 4 3 2
7
SHDNB
VCC_D
J10
15
REF/XTAL
GND
4
5 4 3 2
0.1u
0.01u
1u
C58
C60 W16
10
VCC_TCXO
R16
22.1
U8
GND2
OUT
VCC
GND1
IT3200B
R61 10K
IDLE_B
VCC_RF
S_CLK
SHDNB
A
VCC_VCO
1
SHDN_B
C41
100n
TP15
R62 10K
R63 10K
R31
0
VCC_BUFF1
R64 10K
R65 10K
R32
VCC_CP
VDD_D
2
VCC_IF
3
VCC_D
2
W15
2
3
VCC_ADC
W13
VCC_TCXO
1
3
CS_B
1
VCC_D_IN
W18
VCC_BUFF1
W14
R34
R10
1
DATA
R33
0
0
0
1
2
3
4
5
6
VDD_D
7
0
4
1
C10
100p
OPEN
OPEN
R43
0
LNA_N2
VCC_VCO
CP_OUT
VCC_CP
JU
1
2
2
VCC_D_IN
3
W17
LOCK_DET
A
Pin1
RSX-5
RSX-5 Xtal: Pin 1 to AC Coupling Cap. Others shorted to GND
MAX8510EXK29+
C14
100p
14
VCC_BUFF
R7 10K
R510K
W12
1
2
VP5_IN
R45 0
R46 0
R50 0
R55 0
R55 0
R57 0
B
C62
10u
+
C63
1u
VCC_A
W9
R3010K
+5
R6 10K
10K
R8 10K
A
VCC_BUFF
+
Figure 1. MAX2769 EV Kit Schematic
5 4 3 2
6.8n
U10
SAFEB1G57KA0F00R1S
0.1u
14
-5
W23
10k
L2 33nH
GND
R51
0
R52
0
100p
2
10n
VDD_D
OUT
C21
8
100k
C35
R26
7
4
A
TP5
INP
0.1u
C1
C8
C38
100n
1
3
R69
0.1u
100p
1
J9D
VCC2
OUT-
15
R18 75
2
C55
C56
www.maximintegrated.com
OPEN
OPEN
R71
J7
1
OUT
1
4
C69 6.8n
E
OPEN
OPEN
OPEN
E
+5
16
C29
Q+_OUT
Q_OUT
R14
47.5
10k
R12
75
1
TP11
VCOM_ADC
A
R70
C17
U14
MAX4447ESE+
1
VCC1
GND
3
13
12
C19
0.1u
OPEN
R37
OPEN
OPEN
R56 0
OPEN
MAX2769 Evaluation Kit
NC
VEE1
FILTER_IN
J1
OPEN
OPEN
1k
1
J2
Q_OUT_ANA
4
NC1
VEE2
1
5
8
D
VEE6
EN
OPEN
+5
+3
3
C67
100p
6
LD
16
CLK_OUT
OUT
J9E
9
U2
1
IN
OUT
OPEN
OPEN
I+
1
2
I-
3
4
Q+
C6
10u
5
6
7
1A
1Y
2A
2Y
3A
3Y
GND
VCC
6A
6Y
5A
5Y
4A
4Y
SN74LV07ADR
U28
14
13
12
11
10
9
8
CLK_OUT
Q-
W19
JU
1
2
BP
R60
0
2
GND
C
R17
0
TP10
1
LOCK_DET
R4
20K
VCC_VCO
VCC_CP
C9 C2
C7
CP_OUT
C12 C3
0.1u
100p
0.1u
100p
0.1u
W20
3
SHDN
C
U1
5
1
C23
0.1u 0.01u
BP
C28
0.47n
C24
27p
VCC_BUFF
4
CP_OUT
1
A
TP3
1u
C57
C64
1
IN
OUT
C70
1uF
2
GND
OPEN
3
SHDN
MAX8510EXK29+
VCC_A
W4
W10
1
2
VCC_A
W6
B
JDR1
SHDNB_IN
1
2
U23
1A
1Y
2A
2Y
3A
3Y
GND
VCC
6A
6Y
5A
5Y
4A
4Y
SN74LV07ADR
14
13
12
11
10
9
8
I1
Q0
Q1
CLK
R9
10K
3
VCC_BUFF
ID_EB_IN
4
5
6
7
LD_OUT
8
9
10
11
12
13
SCLK_IN
CS_B_IN
D_IN
1
2
3
4
5
6
7
8
9
14
15
16
17
18
19
20
21
14
15
16
17
18
19
20
21
22
23
24
25
W11
1
2
VN5_IN
-5
VCC_A
W8
C61
10u
C59
1u
VCC_A
W7
VCC_D_IN
W5
VCC_D_IN
W3
VCC_D_IN
W2
A
VCC_D_IN
W1
22
10
23
11
24
12
25
13
MAX2769 Evaluation Kit
ANALOG VERSION
REV 4A
4
Note:
Evaluates: MAX2769
Maxim Integrated
│
5
5
R47, R48, R52, R54 are 0 ohms in Analog Mode,
R47, R48, R52, R54 are OPEN in Digital Modes.
R59 0
3
2
Sheet 1 of 1
1
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