Datasheet

2 Maxim Integrated
Evaluates: MAX9633
MAX9633 Evaluation Kit
Quick Start
Required Equipment
• MAX9633EVkit
• ±15V,40mADCpowersupply(PS1)
• +1Vprecisionvoltagesource
• Digitalmultimeter(DMM)
Procedure
The EV kit is fully assembled and tested. Follow the steps
below to verify board operation:
1) Connect the positive terminal of the +15V supply to
the VCC pad, and the GND terminal to the GND pad.
Connect the negative terminal of the -15V supply to
the VEE pad, and the GND terminal to the GND pad.
The power supplies should be off.
2) Connect the positive terminal of the precision
voltage source to the INA+ pad. Connect the negative
terminal of the precision voltage source to the INA-
pad.
3) Install a shunt on jumper JU1 to short INA- to GND.
4) Connect the DMM to monitor the voltage on the OUTA
pad.
5) Turn on the Q15V power supply.
6) Apply +1V from the precision voltage source. Observe
the output at the OUTA pad on the DMM. OUTA
should read approximately +1V.
7) Repeat steps 2–7 to evaluate OUTB.
Detailed Description of Hardware
The MAX9633 EV kit provides a proven layout for the
MAX9633 dual, low-noise, low-distortion op amp to
support multiple op-amp configurations. The EV kit
accepts a +4.5V to +36V single-supply voltage, or a
Q2.25V to Q18V dual-supply voltage.
Jumper Selection
Input Configuration
Jumpers JU1–JU4 are provided to allow flex-
ibility in grounding inputs for multiple op-amp con-
figurations. When a shunt is installed on the jumper, the
corresponding input pad is referenced to ground. See
Table 1 for the JU1–JU4 configuration. See the Op-Amp
Configuration section for more information regarding EV
kit configuration.
Op-Amp Configuration
Inverting Configuration
To configure op-amp U1-A as an inverting amplifier,
replace R2 and R4 with the desired 1% gain-setting
resistors, install a shunt on jumper JU2, and feed a
voltage V
IN
between the INA- and INA+ pads. Install
a shunt on JU2 to ground the INA+ input in this
configuration. The output voltage is given by the
following equation:
( )
OUT IN OS
R4
V VV
R2
= +
The offset voltage V
OS
can be either positive or negative.
To configure op-amp U1-B as an inverting amplifier,
replace R7 and R9 with the desired 1% gain-setting
resistors, install a shunt on jumper JU4, and feed a
voltage V
IN
between the INB- and INB+ pads. Install
a shunt on JU4 to ground the INB+ input in this
configuration. The output voltage is given by the
following equation:
( )
OUT IN OS
R9
V VV
R7
= +
The offset voltage V
OS
can be either positive or negative.
Noninverting Configuration
To configure op-amp U1-A as a noninverting amplifier,
replace R2 and R4 with the desired 1% gain-setting
resistors, replace R3 with a 0I resistor, install a shunt on
jumper JU1, and feed a voltage V
IN
between the INA+
and INA- pads. Install a shunt on JU1 to ground the INA-
input in this configuration. The output voltage is given by
the following equation:
( )
OUT IN
R4
V 1V
R2

= +


To configure op-amp U1-B as a noninverting amplifier,
replace R7 and R9 with the desired 1% gain-setting
resistors, replace R8 with a 0I resistor, install a shunt on
jumper JU3, and feed a voltage V
IN
between the INB+
Table 1. Jumper Selection (JU1–JU4)
*Default position.
SHUNT POSITION IN-/IN+ INPUT
Installed Connected to GND
Not installed* Signal applied at IN-/IN+ pad