欢迎访问ic37.com |
会员登录 免费注册
发布采购

ELM412SM 参数 Datasheet PDF下载

ELM412SM图片预览
型号: ELM412SM
PDF下载: 下载PDF文件 查看货源
内容描述: 压电元件驱动器 [Piezo Element Driver]
分类和应用: 驱动器
文件页数/大小: 4 页 / 27 K
品牌: ELM [ ELM ELECTRONICS ]
 浏览型号ELM412SM的Datasheet PDF文件第2页浏览型号ELM412SM的Datasheet PDF文件第3页浏览型号ELM412SM的Datasheet PDF文件第4页  
ELM412
Piezo Element Driver
Description
The ELM412 is an 8 pin oscillator circuit for
driving piezo-electric elements. With the exception of
one external resistor, all of the circuitry required to
drive a typical piezo ‘bender’ is contained within this
chip.
This circuit allows the user to select one of eight
possible operating frequencies by way of three logic
level inputs. These eight frequencies represent
some of the more common resonant frequencies
used for piezo elements. If desired, the frequency
can be continually varied by the controlling circuit.
The output of the ELM412 uses a bridge
configuration to obtain maximum audio drive for a
given power supply level. A single input pin is all that
is required to gate the output on and off.
Typically the ELM412 is used to relieve a
processor of the duty of waveform generation,
allowing it to concentrate on other activities,
although the circuit can also be used in stand-alone
tone generator circuits.
Features
• Low power CMOS design
• Wide supply range - 3.0 to 5.5 volt operation
• No external timing elements required
• Generates eight common piezo frequencies
• Bridged output for greater audio power
• Modified waveform for reduced harmonics
Connection Diagram
PDIP and SOIC
(top view)
V
DD
F2
F1
F0
1
2
3
4
8
7
6
5
V
SS
Out1
Out2
Enable
Applications
• Computer controlled tone generation
• Alarm warning signals
• Keyboard click generation
• Logic probe circuits
Block Diagram
Enable
5
F2
L
L
L
L
H
H
H
H
F1
L
L
H
H
L
L
H
H
F0 Frequency
L
H
L
H
L
H
L
H
600
1200
2000
2400
2800
3200
3600
4000
Programmable
Oscillator
F2
F1
F0
2
Waveform
Generator
7
6
Out1
Out2
3
4
Table 1
ELM412DSB
Elm Electronics – Circuits for the Hobbyist
1 of 4