Features
200Vpp High output voltage covers wide range piezo applications
- Hitachi high voltage linear amplifier with on-chip boost regulator generates 200Vpp (BTL : Bridge Tied Load) output voltage.
- Both single layer and multi layer piezo actuator applicable.
Suitable for mobile terminal applications
- Novel low power architecture suits for mobile applications
Low output signal distortion
- Low output signal distortion(-54dB) even at high output voltage (Low THD mode)
High reliability
- On-chip thermal protection and over current protection circuits keeps high reliability.
Low thermal resistivity and Small PKG
- QFN 24pin PKG with thermal PAD realize low cost and efficient heat radiation.
Specifications
Linear AMP Functional block
Linear AMP Electrical Characteristics
Input / Output signal waveform(1kHz)
Linear AMP Evaluation Board
Application Example
Piezo actuator drive used for wide touch panel
- Hitachi high voltage linear amplifier facilitates by miniaturizing and making to high performance.
- Matched piezo actuator drive for various touch panels.
Smart phone
Tablet PC
Car navigation
What is Piezo actuator ?
Requirements for Piezo actuator driver
- Wide range output covers wide range application.
- Symmetrical wave form is one of the key factor.
A piezoelectric material produces an electric charge when a mechanical stress is applied
(the material is squeezed or stretched). Conversely, a mechanical deformation
(the substance shrinks or expands) is produced when an electric field is applied.
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