ANALOG DEVICES UG-278 Service Manual

Evaluation Board User Guide
09873-001
ADMP401
V
DD
OUTPUT
GND
0.1µF
09873-002
13.5mm
4.30mm
09873-003
09873-004
UG-278
One Technology Way P.O. Box 9106 Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 Fax: 781.461.3113www.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)

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)
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