Datasheet > S32768

S32768

更新时间： 2024-10-29 06:09:47

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
14页	369K
描述
Ultrasonic Sonar Ranging IC

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

S32768 数据手册

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

Ultrasonic Sonar Ranging IC - PW0268

Features:

z Operating Voltage: 6 – 10Vdc single source

z Operating Frequency: broadband output ranging up to 250KHz

z Variable R/C Oscillator: compensates for transducer resonate

frequency drift due to temperature.

z High Gain Amplifier: varies with time over 32 steps

z Integrated Band Pass Filter: reduces external component count

z Bi-direction I/O Pin: simplifies the control function for

transmitting a pulse and receiving an echo

z An adjustable System Clock: enables the control of, the

number of pulses transmitted, the slope of the variable gain

amplifier, and the pulse repetition rate.

z The PW0268 IC is suitable for use in car reversing aids,

electronic tape measures and other sonar ranging applications.

SSOP20

Description:

The PW-0268 ultrasonic sonar ranging IC is ideally suited for echo ranging systems. This chip has many design

features to enhance its performance and ease of use in this application.

The externally tunable RC Oscillator automatically tracks and compensates for the shift of the resonate frequency

of the transducer due to temperature changes.

The Fix Gain Preamplifier can be tailored to compensate for varying transducer sensitivities. The 32-step Time

Controlled Variable Gain Amplifier slope can be modified by adjusting the frequency of the system clock.

An onboard Comparator converts the analog signal of the returning echo to a TTL level digital signal for use with

an external microprocessor.

The integrated Band Pass Filters can be adjusted for custom applications by changing a few external components.

The frequency of the System Clock can be adjusted to control other operating parameters of the chip including the

transmit pulse width and sample rate.

The I_O pin, (pin 1) is a bi-direction pin and is designed as an open collector connection with an internal pull high

resistor. When the I_O pin is being pulled low by an external transistor, the RC oscillator generates a tone burst

signal at DRIVER_0 (pin 11), the output driver stage for the transducer. After the transmit pulse, the I_O pin, (pin 1)

will again go low if a valid echo signal is detected.

The reflected echo signal is presented to the first stage pre-amplifier through ECHO (pin 10). The gain of

pre-amplifier can be adjusted to accommodate transducers with varying sensitivities by changing an external

resistor between ECHO (pin 10) and GR_I (pin 9).

The 32 steps time controlled variable gain amplifier input TCG_I (pin7) and output TCG_O (pin 6) is synchronized

to start incrementing at the end of control pulse signal I-O, (pin 1) and is reset at the beginning of the next control

pulse.

Only a few passive components are needed for the active band pass filter. There are two stages, a low pass, LP_I

(pin 5) and LP_O (pin 4) and upper band pass, HP_I (pin 3) to HP_O (pin 2). The center frequency and

bandwidth of the filter are chosen based on the type of ultrasonic transducer being used and the specific application.

The amplified echo signal after being filtered is routed to a comparator, which shapes and coverts the analog echo

signal into digital signal outputted at I_O (pin 1) for further µP handling.

The unique temperature compensating Ultrasonic R/C Oscillator circuitry tracks the resonant frequency drift of the

transducer that is causes by environment temperature changes. Simply adding dual diodes and one resistor between

DRIVER_O (pin 11) and Ftrace (pin 12) is all that is needed to complete this function.

12 3 4 5 6 7...14

中文翻译

下载PDF

与S32768相关器件

型号	品牌	获取价格	描述	数据表
S-328.7OHM0.01%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 3W, 28.7ohm, 150V, 0.01% +/-Tol, -20,20ppm/Cel, Surface Mount,
S-329.4OHM0.01%	VISHAY	获取价格	暂无描述
S3290	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S3290-44.736	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S3291	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S3291-44.736	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S3292	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S3292-44.736	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL
S-3294OHM0.01%	VISHAY	获取价格	Fixed Resistor, Wire Wound, 3W, 294ohm, 150V, 0.01% +/-Tol, -20,20ppm/Cel, Surface Mount,
S3297	CRYSTEKMICROWAVE	获取价格	Clock Oscillator 8 Pin Dip, 5V, HCMOS/TTL

与S32768相关文章

三星深化印度制造布局，供应链本地化进程加速
2024-10-29

15
芯擎科技“星辰一号”自动驾驶芯片点亮成功，2025年量产在即
2024-10-29

17
纳微科技震撼发布GaNSlim革新氮化镓功率芯片
2024-10-18

41
意法半导体发布第四代SiC技术，助力电动汽车电驱
2024-10-15

49

产品中心

服务支持

精选活动

关于我们

帮助中心

S32768

S32768 数据手册

与S32768相关器件

与S32768相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

S32768

S32768 数据手册

与S32768相关器件

与S32768相关文章

您还可以找

您在本页遇到什么问题？