HV892DB1 Supertex, HV892DB1 Datasheet

HV892DB1

Manufacturer Part Number

HV892DB1

Description

Display Modules & Development Tools INDUCTORLESS LIQUID LENS DRVR DEMOBOARD

Manufacturer

Supertex

Datasheet

1.HV892DB1.pdf (2 pages)

Current page: 1 of 2
Download datasheet (474Kb)

General Description

The HV892DB1 liquid lens driver demoboard is controlled via

an I

200pF, and is compatible with 40V

A charge pump boost converter integrated on-chip provides

the high voltage necessary for driving the lens. No external

inductors or diodes are needed. The board requires only two

ceramic chip capacitors to complete a lens driver circuit.

An H-bridge output stage provides AC drive to the lens,

allowing the use of a single high voltage boost converter while

providing alternating polarity to the lens. Controlled rising and

falling edges on the drive waveform reduces EMI.

Board Layout and Connection Diagram

Connections:

VIN

Supply voltage to the HV892. Externally supplied V

be between 2.65 and 5.50V.

GND

Circuit common.

VDD

Externally supplied logic reference voltage for the I

face. V

SCL

400kHz.

C clock. Clock frequency should be no greater than

C interface, is capable of driving capacitive loads of up to

should be between 1.70 and 2.95V.

1.70 – 2.95V

C bus

2.65 – 5.5V

SDA

SCL

Liquid Lens Driver Demoboard

RMS

to 60V

RMS

lenses.

Inductorless,

C inter-

should

SDA

OUT1 and OUT2

The lens driver output. Connect the lens between these two

terminals. Load (lens) capacitance should be between 100

and 200pF, including any stray capacitance.

Note:

C data.

Speciﬁcations

Parameter

Supply voltage (V

Supply current (I

Output voltage (OUT1 – OUT2)

Load (lens) capacitance

Board dimensions:

The resistors shown in the connection diagram are the

normal I

C reference voltage (V

C clock:

C address (7-bit):

C pull-ups. No additional pull-ups are required.

)

Liquid Lens

100 – 200pF

20mA max operating

500nA max standby

HV892DB1

35.6mm x 26.2mm

adjustable via I

9.8 – 62.6V

2.65 – 5.50V

1.70 – 2.95V

100 – 200pF

400kHz max

0100011b

Value

RMS

Related parts for HV892DB1

HV892DB1 Summary of contents

Page 1

... Liquid Lens Driver Demoboard General Description The HV892DB1 liquid lens driver demoboard is controlled via interface, is capable of driving capacitive loads 200pF, and is compatible with 40V A charge pump boost converter integrated on-chip provides the high voltage necessary for driving the lens. No external inductors or diodes are needed. The board requires only two ceramic chip capacitors to complete a lens driver circuit ...

Page 2

... HV892DB1 Circuit Schematic bus V DD 1.70 – 2.95V V IN 2.65 – 5.5V Bill of Materials Part Description C Ceramic capacitor IN C Ceramic capacitor HV IC Lens driver 1 Operation A single byte (AMP) written to the HV892 controls the opera- tion of the driver. Setting AMP = 00h causes the HV892 to go into low power standby mode ...

Related keywords

HV892DB1 datasheet
HV892DB1 data sheet
HV892DB1 pdf datasheet
HV892DB1 component
HV892DB1 part
HV892DB1 distributor
HV892DB1 RoHS
HV892DB1 datasheet download