19-3222; Rev 0; 1/04
MAX1427 Evaluation Kit
General Description
The MAX1427 evaluation kit (EV kit) is a fully assembled
and tested circuit board that contains all the components
necessary to evaluate the performance of the MAX1418,
MAX1419, or MAX1427 15-bit analog-to-digital converters
(ADCs). The MAX1427 requires a differential analog input
signal. The MAX1427 EV kit features an on-board trans-
former that converts the output of a user-provided single-
ended signal source to the required differential signal.
The digital output produced by the MAX1427 can be cap-
tured with a user-provided high-speed logic analyzer or
data-acquisition system. The EV kit operates from 5V and
2.5V power supplies. The EV kit comes with the MAX1427
installed. Order free samples of the pin-compatible
MAX1418 or MAX1419 to evaluate these parts.
♦
Low-Voltage Digital Outputs
♦
Fully Differential Signal Input Configuration
♦
On-Board Data Latch
♦
Assembled and Tested
♦
Also Evaluates the MAX1418, MAX1419
Features
♦
Up to 80Msps Sampling Rate with the MAX1427
Evaluates: MAX1418/MAX1419/MAX1427
Part Selection Table
PART
MAX1418ETN
MAX1419ETN
MAX1427ETN
SPEED
(Msps)
65
65
80
TARGET
APPLICATION
IF
Baseband
Baseband
PART
MAX1427EVKIT
Ordering Information
TEMP RANGE
0°C to +70°C
IC PACKAGE
56 Thin QFN
Note:
To evaluate the MAX1418 or the MAX1419, request a free
sample with the MAX1427 EV kit.
Component List
DESIGNATION
C1, C2, C3
QTY
3
DESCRIPTION
47µF ±20%, X5R 6.3V ceramic
capacitors (1210)
TDK C3225X5R0J476M
10µF ±20%, X5R 6.3V ceramic
capacitors (0805)
TDK C2012X5R0J106M
1.0µF ±20%, X5R 6.3V ceramic
capacitors (0402)
TDK C1005X5R0J105M
Murata GRM155R60J105KE19B
0.1µF ±20%, X5R 10V ceramic
capacitors (0402)
TDK C1005X5R1A104M
0.1µF ±20%, X7R 25V ceramic
capacitors (0603)
TDK C1608X7R1E104M
Not installed (0402)
DESIGNATION
QTY
DESCRIPTION
0.1µF ±20%, X5R 6.3V ceramic
capacitors (0201)
TDK C0603X5R0J104M
Murata GRM33R60J104K
0.01µF ±20%, X7R 25V ceramic
capacitors (0402)
TDK C1005X7R1E103M
Not installed (0603)
Not installed (D case)
220µF ±20%, 6.3V low-ESR tantalum
capacitors (D case)
AVX TPSD227M006R0100
Dual Schottky diode (SOT23)
Zetex BAS70-04
SMA PC-mount connectors
Not installed
Dual-row, 40-pin header
C29, C44
2
C4, C6, C7
3
C31, C34
C36, C37
C38, C40, C42
C39, C41, C43
2
0
0
3
C8, C9, C19
3
C10–C18, C20,
C24–C28
15
D1
C21, C30
C22, C23, C32,
C33, C35
2
J1, J3
J2, J4
J5
1
2
0
1
0
________________________________________________________________
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.
MAX1427 Evaluation Kit
Evaluates: MAX1418/MAX1419/MAX1427
Component List (continued)
DESIGNATION
L1–L4
R1, R3,
R5–R14, R18,
R19
R2, R4
R15, R16
R17
RA1, RA2, RA3
RA4, RA5, RA6
QTY
4
DESCRIPTION
EMI filters
Murata NFM41PC204F1H3B
Not installed (0603)
49.9Ω ±1% resistors (0603)
54.9Ω ±1% resistors (0603)
51.1Ω ±1% resistor (0603)
220Ω ±5% resistor arrays
Panasonic EXB-2HV-221J
47Ω ±5% resistor arrays
Panasonic EXB-2HV-470J
U2
1
DESIGNATION
T1, T2
T3
U1
2
2
1
3
3
QTY
2
1
1
DESCRIPTION
1:2 RF transformers
Mini-Circuits T2-1T-KK81
1:1 RF transformer
Mini-Circuits T1-1T-KK81
MAX1427ETN (56-pin thin QFN)
Low-voltage 22-bit register
(64-pin TSSOP)
Texas Instruments
SN74AVC16722DGG
Tiny logic UHS buffers (5-pin SC70)
Fairchild NC7SZ125P5
Test points (black)
MAX1427 PC board
0
U3, U4
TP1, TP2
None
2
2
1
Component Suppliers
SUPPLIER
AVX
Fairchild
Mini-Circuits
Murata
Panasonic
TDK
Zetex
PHONE
843-946-0238
888-522-5372
718-934-4500
770-436-1300
714-373-7366
847-803-6100
631-543-7100
FAX
843-626-3123
N/A
718-332-4661
770-436-3030
714-737-7323
847-390-4405
631-864-7630
WEBSITE
www.avxcorp.com
www.fairchildsemi.com
www.minicircuits.com
www.murata.com
www.panasonic.com
www.component.tdk.com
www.zetex.com
Note:
Please indicate that you are using the MAX1427 when contacting these component suppliers.
Quick Start
Recommended Equipment
•
DC power supplies:
Digital (VDUT3) 2.5V, 100mA
Analog (VDUT5) 5.0V, 500mA
Logic (VL) 2.5V, 100mA
Signal generator with low-phase noise and low jitter
for clock input (e.g., HP 8662A, HP 8644A)
Signal generator for analog signal input (e.g.,
HP 8662A, HP 8644A)
Logic analyzer or data-acquisition system (e.g.,
HP 16500C, TLA671)
Analog bandpass filters (e.g., Allen Avionics, K&L
Microwave) for input signal and clock signal
•
•
•
•
Procedure
The MAX1427 EV kit is a fully assembled and tested sur-
face-mount board. Follow the steps below to verify board
operation.
Do not turn on power supplies or enable
signal generators until all connections are completed:
2
1) Connect the output of the 80MHz clock signal gen-
erator to the input of the clock bandpass filter.
2) Connect the output of the clock bandpass filter to the
CLOCK (J3) SMA connector on the MAX1427 EV kit.
3) Connect the output of the analog signal generator
to the input of the analog bandpass filter.
4) Connect the output of the analog bandpass filter to
the INP (J1) SMA connector on the MAX1427 EV kit.
5) Connect the logic analyzer to header J5. See the
Output Signal
section for bit locations and J5 header
designations.
6) Connect a 5.0V, 500mA power supply to VDUT5.
Connect the ground terminal of this supply to the
AGND pad.
7) Connect a 2.5V, 100mA power supply to VDUT3.
Connect the ground terminal of this supply to the
DGND pad.
8) Connect a 2.5V, 100mA power supply to VL.
Connect the ground terminal of this supply to the
corresponding GND pad.
_______________________________________________________________________________________
MAX1427 Evaluation Kit
9) Turn on the power supplies.
10) Enable the signal generators. Set the clock signal
generator for an output amplitude of 2.4V
P-P
and a
frequency (f
CLK
) of 80MHz. Set the analog signal
generator for an output amplitude of
≤1.81V
P-P
and to
the desired frequency. The signal generators should
be phase locked. Adjust the analog input signal level
to overcome cable and bandpass filter losses.
11) Enable the logic analyzer.
12) Collect data using the logic analyzer.
Because cable and bandpass filter losses affect the
amplitude of the received signal at the ADC, account for
these losses when configuring the signal input generator.
Evaluates: MAX1418/MAX1419/MAX1427
Digital Output Signals
The MAX1427 features a single 15-bit, parallel, CMOS-
compatible, digital output bus. The digital outputs of
the MAX1427 are applied to a latch, capable of driving
large capacitive loads, which may be present at the
logic analyzer connection. The outputs of the latch are
connected to a 40-pin header (J5), where the user can
connect a logic analyzer or data-acquisition system.
See
Table
1 for header J5 bit locations.
A poor-quality connection may lead to apparent perfor-
mance degradation. To optimize dynamic performance,
avoid using “flying-” or “individual-”lead logic-analyzer
probes for collecting data from the MAX1427 EV kit.
Detailed Description
The MAX1427 EV kit is a fully assembled and tested
circuit board that contains all the components necessary
to evaluate the MAX1418, MAX1419, and MAX1427. Data
generated by the MAX1427 is captured on a single 15-bit
bus. The default EV kit configuration features the
MAX1427, which can be evaluated with a maximum clock
frequency (f
CLK
) of 80MHz.
The EV kit is designed as a six-layer PC board to optimize
the performance of the MAX1427. The EV kit is specified
to have 5.0V and 2.5V power supplies applied to the
analog (VDUT5) and digital (VDUT3, VL) power planes,
respectively.
Access to the digital outputs is provided through con-
nector J5. The 40-pin connector easily interfaces directly
with a user-provided logic analyzer or data-acquisition
system. The digital output clock signal is available at the
J5-38 pin (CLK), which can be used to synchronize the
output data to the logic analyzer.
Evaluating the MAX1418/
MAX1419
To evaluate the MAX1418 or MAX1419, remove IC
U1 from the EV kit and install a free sample of the
desired ADC.
Table 1. Output Bit Locations
BIT
CLK
DOR
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
POSITION
J5-38
J5-34
J5-32
J5-30
J5-28
J5-26
J5-24
J5-22
J5-20
J5-18
J5-16
J5-14
J5-12
J5-10
J5-8
J5-6
J5-4
Power Supplies
The MAX1427 EV kit requires separate analog and digi-
tal power supplies. A 5.0V power supply is used to
power the analog portion (VDUT5) of the MAX1427.
Separate 2.5V power supplies are used to power the
digital portion (VDUT3) of the MAX1427 and the data
latch (VL) U2 of the MAX1427 EV kit. V
DUT3
and VL can
be operated between 2.5V and 3.3V.
Clock
A user-provided single-ended signal is converted to a
differential signal through transformer T2. A diode (D1)
limits the amplitude of the clock signal; thus, overdriv-
ing the CLOCK SMA input can increase the slew rate of
the differential signal, thereby, reducing clock jitter.
Input Signal
The MAX1427 requires a differential analog input signal.
The MAX1427 EV kit features an on-board transformer
(T1) that converts the output of a user-provided single-
ended signal source with an amplitude of less than
1.81V
P-P
to the required differential signal.
Note:
All odd-numbered pins are connected to ground.
_______________________________________________________________________________________
3
Evaluates: MAX1418/MAX1419/MAX1427
MAX1427 Evaluation Kit
Figure 1. MAX1427 EV Kit Schematic (Sheet 1 of 3)
VDUT5
VDUT3
VDUT3E
18
AV
CC
AV
CC
AV
CC
AV
CC
AV
CC
AV
CC
AV
CC
AV
CC
AV
CC
DV
CC
GND
GND
GND
GND
1
GND
GND
D14
GND
D13
3
C31
0.01µF
TP1
CM
13
U1
GND
D12
D11
D10
D9
D8
R5
OPEN
10
INP
D7
D6
INN
D5
D4
C32
SHORT
D3
D2
4
D1
CLKP
D0
5
C35
SHORT
3
CLKN
GND
6
GND
9
GND
12
GND
14
GND
15
GND
17
GND
23
GND
20
GND
26
GND
27
DOR
GND
30
38
37
36
35
34
33
32
55
54
53
52
49
48
47
46
45
44
43
40
39
DAV
50
DAV
DRV
CC
DRV
CC
DRV
CC
DRV
CC
19
21
22
24
25
7
8
28
31
41
42
51
29
56
2
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
DOR
4
MAX1427
TP2
16
GND
R10
OPEN
R11
SHORT
6
1
2
COM
4
3
C36
OPEN
R16
54.9Ω R14
1% SHORT
R8
OPEN
C37
OPEN
C21
0.1µF
C30
0.1µF
11
R13
OPEN
5
T1
R15
54.9Ω
1%
R2
49.9Ω
1%
2
R
L
D1
C23
OPEN
R4
49.9Ω
1%
C33
OPEN
C34
0.01µF
C24
0.1µF
1
COM
J4
R17
51.1Ω
1%
(OPEN)
C20
0.1µF
J1
R9
SHORT
R18
OPEN
R1
OPEN
4
5
6
T3
3
2
1
J2
R6
OPEN R12
SHORT
R19
OPEN
(OPEN)
R7
SHORT
J3
C22
SHORT
4
T2
3
5
2
_______________________________________________________________________________________
R3
OPEN
6
1
VL
58
43
22
V
CC
Q22
Q21
3
27
4
13
12
11
10
9
47
RA5
1
2
17
3
4
5
6
14
7
8
47
RA6
1
2
8
6
5
3
2
3
4
5
6
7
8
47
16
15
14
13
12
11
10
9
CLK0
9
10
13
12
10
9
11
12
13
14
16
15
15
16
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
N.C.
DOR
N.C.
CLK
N.C.
J5-32
J5-30
J5-28
J5-26
J5-24
J5-22
J5-20
J5-18
J5-16
J5-14
J5-12
J5-10
J5-8
J5-6
J5-4
J5-2
J5-34
J5-36
J5-38
J5-40
J5
J5-1
J5-3
J5-5
J5-7
J5-9
J5-11
J5-13
J5-15
J5-17
J5-19
J5-21
J5-23
J5-25
J5-27
J5-29
J5-31
J5-33
J5-35
J5-37
J5-39
5
6
7
23
8
21
20
19
26
24
14
Q20
Q19
Q18
Q17
Q16
Q15
Q14
U2
Q13
Q12
Q11
Q10
Q9
Q8
Q7
Q6
Q5
Q4
Q3
Q2
Q1
29
2
15
30
1
16
V
CC
RA4
7
V
CC
V
CC
V
CC
37
28
35
D22
D21
D20
D19
D18
D17
D16
D15
D14
D13
36
38
39
41
42
44
45
46
48
49
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
CLK
N.C.
OE
CLKEN
GND GND GND GND GND GND GND GND GND GND
61
54
47
40
34
31
25
18
11
4
50
51
52
53
55
56
57
59
60
62
63
CLK
32
1
33
64
V
CC
RA1
1
16
2
15
3
14
4
13
5
12
6
11
D14
7
10
D13
8
9
Figure 1. MAX1427 EV Kit Schematic (Sheet 2 of 3)
SN74AVC16722
220
RA2
D12
1
16
D11
2
15
D10
3
14
D9
4
13
D8
5
12
D7
6
11
D6
7
10
D5
8
9
220
RA3
D4
1
16
D3
2
15
D2
3
14
D1
4
13
D0
5
12
6
11
7
10
DOR
8
9
Evaluates: MAX1418/MAX1419/MAX1427
_______________________________________________________________________________________
220
MAX1427 Evaluation Kit
5
NXP MCU
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