MAX1292EVKIT Maxim Integrated Products, MAX1292EVKIT Datasheet - Page 2

• Manufacturer Part Number: MAX1292EVKIT
• Description: EVALUATION KIT FOR MAX1292
• Manufacturer: Maxim Integrated Products

Specifications of MAX1292EVKIT

• Number Of Adc's: 1
• Number Of Bits: 12
• Sampling Rate (per Second): 400k
• Data Interface: Parallel
• Inputs Per Adc: 4 Single Ended
• Input Range: ±VREF/2
• Power (typ) @ Conditions: 9.5mW @ 400kSPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX1292, MAX1293
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Connect all supplies and signal lines before turning on
any supply or signal source.
1) Connect the +5V power supply to the VDD and
2) Make sure there is no shunt installed on JU1
3) Connect the analog source (function generators or
4) Connect a logic analyzer, word generator, or other
5) Connect the digital control signals for CS, RD, WR,
6) Connect the clock signal (0.1MHz to 7.6MHz) to the
7) Turn on the VDD and VLOGIC supplies. Enable the
8) Turn on the analog sources. The system is ready
9) Use the logic analyzer for data analysis.
The analog inputs are configured for using a function
generator. The inputs have 51Ω loads and 0.1µF capaci-
tors to match the generator’s impedance. It might be
necessary to remove these if the board is connected to
the user’s system. The system must provide low imped-
ance and any necessary anti-aliasing filtering.
The MAX1292 evaluation board uses two ground planes
to reduce noise. All digital signals connect to the digital
ground plane (DGND), and the noise-sensitive analog
signals connect to the separate analog ground plane
(AGND). The two grounds connect at only one point
near the ground pin (pin 20) of the MAX1292. The
ground connection (RGND) for the optional external ref-
erence supply is connected directly to the same point.
This “star” ground configuration is common in low-noise
analog systems.
MAX1292 Evaluation Kit
2
VLOGIC pads. Connect the ground side to the
AGND and DGND pads. For best low-noise perfor-
mance, connect separate supplies to VDD/AGND
and VLOGIC/DGND.
(Table 1). This enables the internal 2.5V reference.
user signals) to the analog input channels
(CH0–CH3). Install a shunt on JU2 to connect the
COM pin to GND.
source for the digital data lines D0–D7. These signals
are available on the 40-pin header (Table 2).
and HBEN. These signals are available on the 40-pin
header or on the BNC connectors.
CLK BNC connector or leave the pin open to use
the internal clock.
digital signal source.
for use.
_______________________________________________________________________________________
Connections and Setup
Detailed Description
Analog Input Signals
Grounding
Table 1. Jumper Functions
*The MAX1292’s 2.5V reference must be disabled before an
external reference voltage is connected. Installing a shunt
across JU1 connects the REFADJ pin to V
on-board reference.
Table 2. 40-Pin Header (J1) Signals
JUMPER
17, 19, 21, 23, 25, 27, 29,
JU1
JU2
1, 3, 5, 7, 9, 11, 13, 15,
30, 32, 34, 36, 38, 40
31, 33, 35, 37, 39
PIN NUMBER
Shorted
STATE
Shorted
10
12
14
16
18
20
22
24
26
28
Open
Open
2
4
6
8
REFADJ pin open or driven externally
REFADJ pin shorted to V
COM pin open or driven externally
COM pin shorted to AGND
FUNCTION
DD
SIGNAL
D2/D10
D3/D11
and disables the
D0/D8
D1/D9
HBEN
GND
CLK
N.C.
INT
WR
RD
CS
D4
D5
D6
D7
DD
*