PW0268 PROWAVE, PW0268 Datasheet - Page 12

• Manufacturer Part Number: PW0268
• Description: IC, ULTRASONIC SONAR RANGING, SSOP-20
• Manufacturer: PROWAVE

Specifications of PW0268

• Supply Current: 11mA
• Supply Voltage Range: 5.5V To 11V
• Sensor Case Style: SSOP
• No. Of Pins: 20
• Operating Temperature Range: -40°C To +85°C
• Termination Type: SMD
• Supply Voltage Max: 11V
• Filter Terminals: SMD
• Rohs Compliant: Yes
• Frequency Response Max: 250kHz
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

P.O. Box 1-70 Chung Ho, Taiwan, ROC; E-mail:
http://www.s2.com.tw
The SRM400 is a sonar ranging module
utilizing our new developed Sonar Ranging IC,
PW-0268, which can work with all our PT or
EP type transducers. SRM400 provides as a
shortcut to develop car reversing systems or
some other distance measurement systems for
design engineers who are not very familiar
with analog circuit and/or the operation of
ultrasonic transducers. By using this module
engineers can focus firstly on the other fields of
digital circuit and software designs as well as
some other mechanical issues. After first stage
then you can either design your own analog
circuit based on the module construction or
consult with factory for making your own
module for your special needs.
Features:
Sonar Ranging Module
ranging up to 250KHz
transducers with different frequencies
32 steps
external component count,
function for transmitting a pulse and
receiving an echo
control of, the number of pulses transmitted,
the slope of the variable gain amplifier, and
the pulse repetition rate
Operating Voltage: 6 – 10Vdc single source
Operating Frequency: broadband output
Built-in variable RC oscillator matching
High Gain Amplifier: varies with time over
Integrated Band Pass Filter: reduces
Bi-direction I/O Pin: simplifies the control
An adjustable System Clock: enables the
Board size: 27.9 * 18 mm (L*W)
S. Square Enterprise Company Limited
Pro-Wave Electronics Corporation
;
http://www.prowave.com.tw
[e-mail];
Specification:
Operation voltage
Operation current
Oscillation frequency Variable RC oscillator
Amplifier gain
Bandpass filter
Driving voltage
(no load)
Bi-directional I/O
Measuring distance
SRM400
1. Module board
2. 400EP14D enclosed type transducer of
3. Detail electrical schematic
Pre-Amplifier
2
Time controlled 32
steps main
amplifier
nd
asymmetrical beam patterns, see detail
specification of 400EP14D.
Tel: [phone](5 lines), 22459774; Fax: [phone]
Stage Amplifier 30 dB
Input signal Open collector pull low
includes:
Output 0..05*Vcc to 0.9*Vcc
DC6 - 10V
<20 mA ＠DC10V
14 dB
35 dB max.
Fc: 38 KHz
Bandwidth: 20KHz
Insertion loss: 1 dB
130Vpp;
pulse width 0.5ms
digital echo signals
25 – 150 cm
SRM400