Microchip HV892DB1 Manual

Microchip Ikke kategoriseret HV892DB1

Læs gratis den danske manual til Microchip HV892DB1 (2 sider) i kategorien Ikke kategoriseret. Denne vejledning er vurderet som hjælpsom af 14 personer og har en gennemsnitlig bedømmelse på 4.5 stjerner ud af 7.5 anmeldelser. Har du et spørgsmål om Microchip HV892DB1, eller vil du spørge andre brugere om produktet?

Download PDF

Side 1/2

Supertex inc.

www.supertex.com

HV892DB1

Doc.# DSDB-HV892DB1

B032114

General Description

The HV892DB1 liquid lens driver demoboard is controlled via

an I2C interface, is capable of driving capacitive loads of up to

200pF, and is compatible with 40VRMS to 60VRMS lenses.

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 Connections

Inductorless,

Liquid Lens Driver Demoboard

Specications

Parameter Value

Supply voltage (VIN) 2.65 – 5.50V:

Supply current (IIN

):20mA max operating

500nA max standby

Output voltage (OUT1 – OUT2):9.8 – 62.6VRMS,

adjustable via I2C

Load (lens) capacitance 100 – 200pF:

I2C reference voltage (VDD) 1.70 – 2.95V:

I2C clock: 400kHz max

I2C address (7-bit): 0100011b

Board dimensions: 35.6mm x 26.2mm

Connections:

VIN

Supply voltage to the HV892. Externally supplied VIN should

be between 2.65 and 5.50V.

GND

Circuit common.

VDD

Externally supplied logic reference voltage for the I2C inter-

face. VDD should be between 1.70 and 2.95V.

SCL

I2C clock. Clock frequency should be no greater than

400kHz.

SDA

I2C data.

OUT1 OUT2 and

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:

The resistors shown in the connection diagram are the

normal I2C pull-ups. No additional pull-ups are required.

IC1

CIN CHV

Liquid Lens

100 - 200pF

VIN =

2.65 - 5.5V

DD =

1.70 - 2.95V

C Bus SCL

SDA

{

Supertex inc. does not recommend the use of its products in life support applications, and will not knowingly sell them for use in such applications unless it receives

an adequate “product liability indemnification insurance agreement.” Supertex inc. does not assume responsibility for use of devices described, and limits its liability

to the replacement of the devices determined defective due to workmanship. No responsibility is assumed for possible omissions and inaccuracies. Circuitry and

specifications are subject to change without notice. For the latest product specifications refer to the Supertex inc. (website: http//www.supertex.com)

Supertex inc.

1235 Bordeaux Drive, Sunnyvale, CA

94089

el: 408-222-8888

www.supertex.com

HV892DB1

Doc.# DSDB-HV892DB1

B032114

HV892DB1 Circuit Schematic

Bill of Materials

Part Description Value Tolerance Rating Package Manufacturer Part Number

CIN Ceramic capacitor 20% 6.3V 0603 Any ---2.2μF

CHV Ceramic capacitor 4.7nF 10% 100V 0603 Any ---

IC1Lens driver - - - 4x4 DFN Supertex HV892K7-G

I2C Bus VDD =

1.70 -2.95V

CHV

4.7nF

CIN

2.2µF

Liquid Lens

100 - 200pF

SDA

SCL

VIN

GND

OUT1

OUT2

VDD VDD

SDA

SCL

GND1

VIN

OUT1

OUT2

GND2

HV892

VIN =

2.65 -5.50V

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. Setting AMP = 01h to FFh

controls output amplitude in 255 monotonic steps.

VOUT(RMS)

= 9.6VRMS + AMP • 208mVRMS

The HV892 is write-only. No readback of the AMP byte is

possible.

The HV892’s 7-bit address is 0100011b. For large quantity

orders, other 7-bit addresses may be obtained.

The resistors shown on the above schematic are the I2C bus’

normal pull-ups. No additional pull-ups are required. Exter-

nally supplied VDD is the I2C bus’ reference voltage.

Externally supplied VIN should be ramped up in less than

2.0ms to ensure the driver starts-up in standby mode. If

brought up slower, the driver may not start-up in standby

mode, with output amplitude at an indeterminate level. In

this case, writing AMP = 00h brings the driver to standby

mode. No damage will occur if VIN is brought up slower than

2.0ms.

Light capacitive loads may result in waveform distortion.

This is due to the output pins being held at a high-Z state for

a portion of the waveform. Without adequate capacitance

to hold up the voltage, some droop may be observed when

DC-loaded by oscilloscope probes.

To avoid loading down the outputs, use instruments hav-

ing at least 10MΩ input impedance when taking measure-

ments. While many voltmeters may have a very high input

resistance on the DC scale, they frequently have only 1.0MΩ

input impedance on the AC scale. Also, be sure to use a

voltmeter with true RMS capability.

Produkt Specifikationer

Mærke:	Microchip
Kategori:	Ikke kategoriseret
Model:	HV892DB1

Har du brug for hjælp?

Hvis du har brug for hjælp til Microchip HV892DB1 stil et spørgsmål nedenfor, og andre brugere vil svare dig

Dit navn*

Din email*

Skriv dit spørgsmål her

Ikke kategoriseret Microchip Manualer

Microchip HS12-100D0/12DS2F Manual

18 Februar 2025

Microchip HSA0-040SDA/A0SA10 Manual

18 Februar 2025

Microchip HSA0-040SIA/A0S1F Manual

18 Februar 2025

Microchip HT12-100S0s/12ST25 Manual

17 Februar 2025

Microchip EMC2103-2 Manual

17 Februar 2025

Microchip EMC1047 Manual

17 Februar 2025

Microchip HCS201 Manual

17 Februar 2025

Microchip LE9653 Manual

17 Februar 2025

Microchip LAN7430 Manual

17 Februar 2025

Microchip HCS500 Manual

17 Februar 2025

Ikke kategoriseret Manualer

Nyeste Ikke kategoriseret Manualer

XO D1HPBF Manual

16 Juni 2025

Fantech RS1 Manual

16 Juni 2025

Playtive IAN 425414 Manual

16 Juni 2025

Playtive IAN 321249 Manual

16 Juni 2025

Playtive IAN 115930 Manual

16 Juni 2025

Aiphone GT-102HB Manual

16 Juni 2025

Playtive HG05516 Manual

16 Juni 2025

Playtive IAN 295154 Manual

16 Juni 2025

Playtive IAN 324362 Manual

16 Juni 2025

Playtive IAN 302521 Manual

16 Juni 2025