MAX110EVC32-DIP Maxim Integrated Products, MAX110EVC32-DIP Datasheet - Page 4

• Manufacturer Part Number: MAX110EVC32-DIP
• Description: EVAL KIT FOR MAX110
• Manufacturer: Maxim Integrated Products

Specifications of MAX110EVC32-DIP

• Number Of Adc's: 1
• Number Of Bits: 14
• Sampling Rate (per Second): 50
• Data Interface: Serial
• Inputs Per Adc: 2 Differential
• Input Range: ±VREF
• Power (typ) @ Conditions: 4.35mW @ 50SPS
• Voltage Supply Source: Single Supply
• Operating Temperature: 0°C ~ 70°C
• Utilized Ic / Part: MAX110, MAX111
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

Be sure to observe frequency and amplitude limits for
the MAX110. The recommended frequency of operation
is 512kHz for XCLK÷1 mode, 1024kHz for XCLK÷2
mode, or 2048kHz for XCLK÷4 mode. The conversion
clock must have a constant, low-jitter frequency, other-
wise the MAX110’s linearity will suffer. Refer to the
MAX110 data sheet for additional information.
To use the MAX110’s internal RC oscillator, remove the
shunt from J5 and move the J1 shunt to pins 2-3. Make
sure that the XCLK÷4 mode is selected in the MAX110
program. The XCLK÷4 mode must be used when the
RC oscillator is enabled, since the RC oscillator fre-
quency is approximately 2MHz. To switch back to the
on-board crystal clock oscillator U3, move the J1 shunt
to pins 1-2 and put a shunt across J5 pins 1-2.
Crystal clock oscillators can introduce noise into the
system. For applications that demand reduced noise
and do not require either precisely controlled conver-
sion timing or 60Hz rejection, the MAX110’s internal RC
oscillator is recommended.
The default reference voltage for the MAX110 EV kit is
2V. When a different reference voltage is selected, for
proper scaling of the displayed output, specify the volt-
age in the command-line option when starting the pro-
gram (see Table 3).
To use the 2.5V MAX873 reference directly, carefully
cut the printed circuit trace at J3 between pins 2 and 3,
and then install a 3-pin header. Next, select the 2.5V
reference by installing a shunt at J3 between pins 1
and 2. Start the MAX110 program with the “-V2.5” com-
mand-line option, to tell the program that the
reference is now 2.5V. Be sure to observe absolute
maximum ratings for the device being evaluated. An
optional 100kΩ trim pot may be added at site R12 to
trim the MAX873 voltage, if desired.
To supply an external voltage reference, carefully cut
the printed circuit trace at J3, between pins 2 and 3,
and at J2. Connect the reference voltage between the
VREF+ and VREF- pads. Run the MAX110 program,
and use the “-V” command-line option to specify the
reference voltage. Be sure to observe absolute maximum
ratings for the device being evaluated.
The MAX110 EV kit software can be used to measure
the supply current of the MAX110 in shutdown mode.
To evaluate shutdown mode, use the following
procedure:
MAX110 Evaluation System/Evaluation Kit
4
_______________________________________________________________________________________
Changing the Reference Voltage
Using the Internal RC Oscillator
Activating Shutdown Mode
Table 2. Jumper Settings on MAX110 EV Kit
JUMPER SETTING
J1
J2
J3
J4
J5
J6
J7
J8
J9
closed
closed
closed
closed
open
open
open
open
open
open
open
open
1-2
2-3
2-3
1-2
1-2
2-3
1-2
2-3
—
XCLK is the clock input to the MAX110.
XCLK is the output from the MAX110’s
internal RC oscillator.
Do not operate the EV kit with J1 open.
VREF- connects to ground.
VREF- does not connect to ground.
VREF+ connects to the on-board 2V
reference.
VREF+ connects to the on-board 2.5V
reference.
VREF+ connects to a user-supplied
reference.
U1 = MAX110, V
U1 = MAX111, V
V
XCLK is driven by the crystal oscillator
U3 (note that when J5 is in 1-2
position, J1 must be in 1-2 position).
XCLK connects to EXTCLK edge pad.
XCLK is isolated.
None
IN1- connects to ground.
IN1- does not connect to ground.
IN2- connects to ground.
IN2- does not connect to ground.
The V
through this jumper. Use this site to
measure the supply current drawn by
the MAX110.
Do not operate the EV kit with J9 open.
SS
must be supplied by the user.
DD
supply to the MAX110 flows
FUNCTION
SS
SS
= -5V from ICL7660
= ground