19-1595; Rev 1; 12/99
MAX1292 Evaluation Kit
General Description
The MAX1292 evaluation kit (EV kit) is assembled with a
MAX1292 and the basic components necessary to eval-
uate this 12-bit analog-to-digital converter (ADC).
Connectors for power supplies, analog inputs, and digital
signals simplify connections to the device. A 40-pin
header allows the user to connect a logic analyzer using
a ribbon cable or conventional minihooks. BNC connec-
tors with 50鈩?terminations provide easy connection
between function generators and the analog inputs.
The board layout is designed to yield 12-bit accuracy
with low noise when sampling at the maximum rate of
400ksps.
The MAX1292 EV kit can also be used to evaluate the
MAX1293. Request a free sample of the MAX1293BCEG
when ordering the MAX1292 EV kit.
o
12-Bit Analog-to-Digital Conversion
o
Four Input Channels
o
Byte-Wide Digital Interface
o
Internal Track/Hold
o
400kHz Sampling Rate
o
Internal 2.5V Reference
o
Internal Clock
o
Low-Power Standby Mode
o
Fully Assembled and Tested Surface-Mount Board
Features
Evaluates: MAX1292/MAX1293
Ordering Information
Component List
DESIGNATION QTY
C1, C3, C8鈥揅12
C2, C4, C5
C6, C7
7
3
2
DESCRIPTION
0.1碌F ceramic capacitors
4.7碌F, 10V tantalum capacitors
AVX TAJB475M010R
0.01碌F ceramic capacitors
BNC connectors
40-pin header
2-pin jumpers
47k鈩? 9-resistor, 10-pin SIP
51鈩?鹵5% resistor
MAX1292BCEG (24-pin QSOP)
Shunts
MAX1292 PC board
MAX1290/MAX1292 data sheet
PART
MAX1292EVKIT
TEMP RANGE
0擄C to +70擄C
IC PACKAGE
24 QSOP
Quick Start
The MAX1292 EV kit comes fully tested and assembled.
The following equipment is required:
鈥?A +5V linear power supply. Switching supplies
induces excess noise on the power input.
鈥?A low-distortion function generator
鈥?A logic analyzer
A logic analyzer or other digital system is needed to
provide the clock and control signals and to capture
the MAX1292 conversion results. Connect the logic
analyzer using a 40-pin ribbon cable, or a combination
of BNC cables, ribbon cable, and miniclips. Refer to the
MAX1292 data sheet for detailed information on timing
requirements.
The analog input signals must be delivered by a low-
distortion source to achieve full 12-bit accuracy. All
analog channels connect to BNC connectors terminated
with 51鈩?resistors. For low-noise performance, maintain
separate analog and digital supplies and grounds to
the board. The grounds are connected in a star config-
uration centered on the ground plane of the board.
Refer to the MAX1292 data sheet for a detailed discus-
sion of signal grounds.
Many of the digital and analog signals on the evaluation
kit have 51鈩?termination resistors matching typical gen-
erator impedance. These should be removed if high-
impedance sources are used.
CH0鈥揅H3, COM,
CS,
CLK,
WR,
11
RD, INT,
HBEN
J1
JU1, JU2
R1
R2, R4鈥揜12
U1
None
None
None
1
2
1
10
1
2
1
1
________________________________________________________________
Maxim Integrated Products
1
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim鈥檚 website at www.maxim-ic.com.
Maxim
1
2
3
4
5
