2 / 14 page
Pro-Wave Electronics Corp.
Tel: 886-2-22465101
Fax: 886-2-22465105
E-mail: sales@pro-wave.com.tw
URL: http://www.prowave.com.tw
2
Block Diagram
4V Regulator
System
Clock
Ultrasonic R/C Oscillator
Timer
High-Speed
Comparator
Band-pass Filter
32 Steps
TCG Amp
1st Pre-Amp
Control
Center
Auto Frequency
Tracking
Sensor
Driver
11
12
13
14
15
16
17
18
19
20
10
9
8
7
6
5
4
3
2
1
I_O
HP_O
LP_O
HP_I
LP_I
TCG_O
GR_O
TCG_I
GR_I
ECHO
Vref
Vcc
GND
Vreg
CLK
ORC3
ORC1
ORC2
Ftrace
Driver_O
Fixed Gain
Amp
Pin Assignment
I_O
HP_O
HP_I
LP_O
LP_I
TCG_O
TCG_I
GR_O
GR_I
ECHO
Vref
Vcc
Vreg
GND
CLK
ORC3
ORC2
ORC1
Ftrace
Driver_O
10
9
20
19
18
17
16
15
14
13
12
11
8
7
6
5
4
3
2
1