7. RECOMMENDED LAND PATTERN
%'& %)(010
%'& 6¤7¤010
(& %2'030
(& 2¤45010
SPM0204UD5
8. RECOMMENDED INTERFACE CIRCUIT
Dotted Section
Represents
Ultrasonic Sensor
+ Term 4
•
•Term. 1
•
Term. 3
Term. 2
R
R
-
+
Vref
External Gain (set by
customer) = -R1/R2
Knowles Acoustics,
a division of Knowles Electronics, LLC
Revision: PRELIMINARY
Page 5 of 9