Evaluation Board User Guide
09873-001
ADMP401
V
DD
OUTPUT
GND
0.1µF
UG-278
One Technology Way • P.O. Box 9106 • Norwood, MA 02062-9106, U.S.A. • Tel: 781.329.4700 • Fax: 781.461.3113 • www.analog.com
EVAL-ADMP401Z-FLEX: Bottom-Ported Analog Output MEMS Microphone
Evaluation Board
GENERAL DESCRIPTION
The EVAL-ADMP401Z-FLEX is a simple evaluation board that
allows quick evaluation of the performance of the ADMP401
MEMS microphone. The small size and low profile of the
flexible PCB enables direct placement of the microphone into
a prototype or an existing design for an in situ evaluation. The
EVA L-ADMP401Z-FLEX consists of an ADMP401 microphone
soldered to a flexible PCB with color-coded wires attached. The
only other component on the board is a 0.1 μF supply bypass
capacitor.
Table 1. Pin Function Descriptions
Wire
Color
Red VDD
White OUTPUT
Black GND Ground.
Mnemonic Description
Power Supply. 1.5 V dc to 3.3 V dc and
250 µA maximum.
Analog Output Signal. 0.8 V dc offset,
450 mV ac peak maximum, and 200 Ω Z
OUT
EVALUATION BOARD CIRCUIT
Figure 1 shows the schematic of the EVAL-ADMP401Z-FLEX,
and Figure 2 shows the layout of the EVAL-ADMP401Z-FLEX.
See the ADMP401 data sheet for a complete description and
specifications of the microphone.
.
Figure 1. Evaluation Board Schematic
Figure 2 . Evaluation Board Layout (Top View)
PLEASE SEE THE LAST PAGE FOR AN IMPORTANT
WARNING AND LEGAL TERMS AND CONDITI ONS.
EVALUATION BOARD PHOTOGRAPH
Figure 4. Top and Bottom View
Rev. 0 | Page 1 of 2
Figure 3. Evaluation Board Dimensions in Millimeters (Wires Not Included)