SRM400 PROWAVE, SRM400 Datasheet - Page 2

• Manufacturer Part Number: SRM400
• Description: SONAR RANGING MODULE, ULTRASONIC
• Manufacturer: PROWAVE

Specifications of SRM400

• Kit Contents: Module Board, 400EP14D Enclosed Type Transducer, Detail Electrical Schematic
• Svhc: No SVHC (18-Jun-2010)
• External Depth: 19mm
• External Length / Height: 8mm
• External Width -: RoHS Compliant
• Silicon Manufacturer: Prowave
• Kit Application Type: Sensor
• Application Sub Type: Sonar Ranging Measurement
• Rohs Compliant: Yes

Sonar Ranging Module
Electronic Circuit Diagram
Signals at different test points:
works with transducer model 400EP18A against a hard target of size of 20cmL*20cmW*1cmT at distance of 50cm
“A” Point:
“C” Point:
“E” Point:
Refer to
Echo
MMBT3904
10K
User
Side
Vcc
High Level Pulse
MCU
PW-0268 Sonar Ranging IC
3
2
1
Main 32 Steps TCG Amplifier
Control Pulse (from MCU)
Transducer loading
3
2
1
Test "A"
3
2
1
Vcc
100u
Test "F"
Vref
20
1
100u
Test "E"
Vcc
19
2
2.7K
100u
for detail information.
13K
Vreg
18
3
Vref
680p
H: 0.5ms/div
V: 5V/div
H: 0.5ms/div
V: 50V/div
H: 0.5ms/div
V: 1V/div
17
4
680p
47K
470p
PW0268
16
Vref
5
660KHZ
2200p
4.7K
22p
15
6
3.3K
4.7K
“B” Point:
“D” Point:
“F” Point:
1K
14
7
2200p
10n
13
8
BAV99
1.5K
Digital Echo signal Output
Tone bursts Signal
1
Test "D"
st
Vref
12
9
Pre-Amplifier
511
33K
Vcc
11
10
100
220u
Test "B"
1
2
10n
BAV99
BSS123
IFT
3
4
Vref
SRM400
Vref
6.8K
Ultrasonic Transducer
H: 0.5ms/div
V: 5V/div
H: 0.5ms/div
V: 20mV/div
H: 0.5ms/div
V: 5V/div
Test "C"
20K
400EP14D