MAX9788EVKIT+ Maxim Integrated Products, MAX9788EVKIT+ Datasheet - Page 2

• Manufacturer Part Number: MAX9788EVKIT+
• Description: EVALUATION KIT FOR MAX9788
• Manufacturer: Maxim Integrated Products

Specifications of MAX9788EVKIT+

• Amplifier Type: Class G
• Output Type: 1-Channel (Mono)
• Max Output Power X Channels @ Load: 2.4W x 1 @ 8 Ohm
• Voltage - Supply: 2.7 V ~ 5.5 V
• Operating Temperature: -40°C ~ 85°C
• Board Type: Fully Populated
• Utilized Ic / Part: MAX9788
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

• 5V, 1A power supply
• Audio source (i.e., CD player, MP3 player)
• One ceramic speaker (recommended suppliers:
The MAX9788 EV kit is fully assembled and tested.
Follow the steps below to verify board operation.
Caution: Do not turn on the power supply until all con-
nections are completed.
1) Install a shunt across pins 1-2 of jumper JU1 (EV kit
2) Connect the ceramic speaker across the OUT- and
3) Connect the positive terminal of the power supply to
4) Connect the positive terminal of the audio source to
5) Connect the negative terminal of the audio source
6) Connect the ground terminal of the audio source to
7) Turn on the audio source.
8) Turn on the power supply.
The MAX9788 EV kit features the MAX9788 Class G
amplifier IC, designed to drive a ceramic speaker in a
BTL configuration. The EV kit operates from a DC power
supply that provides 2.7V to 5.5V and 1A of current.
MAX9788 Evaluation Kit
2
Murata, Taiyo Yuden)
ON).
OUT+ pads.
the VCC pad and the ground terminal to the GND
pad.
the IN+ pad.
to the IN- pad. Connect the IN- pad to GND if the
audio source is single ended.
the GND pad.
_______________________________________________________________________________________
Recommended Equipment
Detailed Description
Quick Start
Procedure
The EV kit accepts single-ended or a differential audio
input and provides a fully differential output. The audio
input source is amplified to drive greater than 14V
into a ceramic speaker.
The MAX9788 EV kit is shipped with a gain of +12dB.
Change the resistors (R1–R4) to customize the gain of
the EV kit (refer to the MAX9788 IC data sheet for
details).
Jumper JU1 controls the shutdown pin (SHDN) of the
MAX9788 IC. The shutdown pin is also controlled by
an external logic controller connected to the EV kit
SHDN pad. Remove the shunt from jumper JU1 before
connecting an external controller to the SHDN pad.
See Table 1 for shunt positions.
Table 1. Shutdown Mode, JU1 Jumper
Selection
* Default position.
POSITION
SHUNT
None
1-2*
2-3
PIN CONNECTED
MAX9788 SHDN
External logic
controller
GND
VDD
TO
Customizing the Gain
Shutdown Mode (SHDN)
Jumper Selection
EV kit enabled
Shutdown mode
SHDN driven by external
logic controller.
Shutdown is active low
and 1.8V logic compliant.
EV KIT FUNCTION
P-P