HV257FG Supertex, HV257FG Datasheet

Sample & Hold Amplifiers 32-CH MEMS Drvr IC

HV257FG

Manufacturer Part Number

HV257FG

Description

Sample & Hold Amplifiers 32-CH MEMS Drvr IC

Manufacturer

Supertex

Datasheet

1.HV257FG.pdf (15 pages)

Specifications of HV257FG

Operating Temperature (max)

85C

Operating Temperature Classification

Commercial

Mounting

Surface Mount

Maximum Operating Temperature

+ 85 C

Minimum Operating Temperature

- 10 C

Mounting Style

SMD/SMT

Package / Case

MQFP-100

Lead Free Status / RoHS Status

Not Compliant

Available stocks

Company

Part Number

Manufacturer

Quantity

Price

Company:

Bonase Electronics (HK) Co., Limited

Part Number:

HV257FG-G

Manufacturer:

Supertex

Quantity:

135

Current page: 1 of 15
Download datasheet (2Mb)

Features

►

Applications

►

Typical Application Circuit

32 independent high voltage ampliﬁers

300V operating voltage

295V output voltage

2.2V/µs typical output slew rate

Adjustable output current source limit

Adjustable output current sink limit

Internal closed loop gain of 72V/V

12MΩ feedback impedance

Layout ideal for die applications

MEMS (microelectromechanical systems) driver

Piezoelectric transducer driver

Optical crosspoint switches (using MEMS

technology)

Processor

Micro

DAC

Sample and Hold Ampliﬁer Array

●

HV257

VSIG

1235 Bordeaux Drive, Sunnyvale, CA 94089

32-Channel High Voltage

Power Supply

Low Voltage

DGND

Low Voltage

and Hold

Channel

Sample

Select

General Description

The Supertex HV257 is a 32-channel, high voltage, sample and

hold ampliﬁer array integrated circuit. It operates on a single high

voltage supply, up to 300V, and two low voltage supplies, V

All 32 sample and hold circuits share a common analog input,

32 logic decoder. The sampled voltage on the holding capacitor is

buffered by a low voltage ampliﬁer and ampliﬁed by a high voltage

ampliﬁer with a closed loop gain of 72V/V. The internal closed

loop gain is set for an input voltage range of 0 to 4.096V. The

input voltage can be up to 5.0V, but the output will saturate. The

maximum output voltage swing is 5.0V below the V

supply. The outputs can drive capacitive loads of up to 3000pF.

The maximum output source and sink current can be adjusted

by using two external resistors. An external R

controls the maximum sourcing current, and an external R

resistor controls the maximum sinking current. The current limit

is approximately 12.5V divided by the external resistor value. The

setting is common for all 32 outputs. A low voltage silicon junction

diode is made available to help monitor the die temperature.

SIG

. The individual sample and hold circuits are selected by a 5 to

OpAmp Array

High Voltage

Power Supply

High Voltage

VNN

AGND

●

Tel: 408-222-8888

OUT

●

www.supertex.com

MEMS

Array

SOURCE

HV257

high voltage

resistor

and

SINK

Related parts for HV257FG

HV257FG Summary of contents

Page 1

... Typical Application Circuit DAC Micro Processor 32-Channel High Voltage General Description The Supertex HV257 is a 32-channel, high voltage, sample and hold ampliﬁer array integrated circuit. It operates on a single high voltage supply 300V, and two low voltage supplies All 32 sample and hold circuits share a common analog input, V ...

Page 2

... Ordering Information 100-Lead MQFP 20.00x14.00mm body Device 3.15mm height (max) 3.20mm footprint HV257 HV257FG-G -G indicates package is RoHS compliant (‘Green’) Absolute Maximum Ratings Parameter V , High voltage supply Analog low voltage positive supply Digital low voltage positive supply Analog low voltage negative supply ...

Page 3

... MΩ --- - 3000 pF --- - 500 µ 12.5V/R SOURCE - 500 µ 12.5V/R SINK - 250 KΩ --- - 250 KΩ --- - - dB --- - - dB --- 4.0 - µs --- 1 Input referred 5.0 - kΩ --- --- 6.0 - V/s Output referred - 5.0 V --- --- - - ns --- - - ns --- - V V --- DD - 1.2 V --- - 1.0 µ µ --- ● Tel: 408-222-8888 ● www.supertex.com SOURCE SINK ...

Page 4

... Typ Max - - 5 100 - -2.2 - ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 ↕ ↕ Hold Hold Step (V ) pedestal Units Conditions V cathode to anode 100µA, anode to cathode µA anode to cathode mV/°C anode to cathode ● Tel: 408-222-8888 ● www.supertex.com Selected S ↕ All Open = 25°C A ...

Page 5

... To internal digital VNN bus OUT S OUT ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 5 Cathode AVDD VPP + + - - AVNN AVNN 71R R AVDD VPP + + - - AVNN AVNN 71R R AVDD VPP + + - H - AVNN AVNN 71R R ● Tel: 408-222-8888 ● www.supertex.com HV 0 OUT HV 1 OUT HV 31 OUT ...

Page 6

... Bordeaux Drive, Sunnyvale, CA 94089 6 VDD VPP 1N4004 or similar VNN DGND 1N5817 or similar = 0V to force all high voltage SIG 300V 300V 0V 0V 6.5V 6. -5.5V -5. Gnd +/- V offset X 72 Gnd +/- V offset VDD Before VNN 0V 6. -5.5V 6.5V 0V ● Tel: 408-222-8888 ● www.supertex.com ...

Page 7

... C2, C3, C4 0.1µF / 25V DVNN Sample VSIG LVOpamp switch C_hold 10pF AVNN AVDD (pins 89, 43) GND ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 7 Current limit OUT HVOpamp HVOpamp Current limit HV OUT HVOpamp 1R C_comp VPP C1 71R A 2 (pin 39) GND ● Tel: 408-222-8888 ● www.supertex.com 31 OUT C_comp ...

Page 8

... SOURCE Temperature Diode vs Temperature (V = 300V 6.5V 5.5V max min max min max min 1μA 20μA 40μA 60μA Diode Biasing Current (µA) HV Droop OUT (V = 300V 6.5V 5.5V - 150 HV Level (V) OUT ● Tel: 408-222-8888 ● www.supertex.com C) O 250k - 80μA 100μA 280 ...

Page 9

... Bordeaux Drive, Sunnyvale, CA 94089 9 Input Offset vs V and Temperature 300V 6.5V 5. Offset at - Offset Offset (Volts) IN Gain 300V 6.5V 5.5V - (Volts Drift OUT HV257DFG-5037047 Q3 Dev # 3, Channel 300V 6.5V -5V, V =1V SIG A 0 Time (hours) ● Tel: 408-222-8888 ● www.supertex.com ...

Page 10

... OUT19 HV OUT18 HV OUT17 HV OUT16 HV OUT15 HV OUT14 HV OUT13 HV OUT12 HV OUT11 HV OUT10 HV OUT9 HV OUT8 HV OUT7 HV OUT6 HV OUT5 HV OUT4 HV OUT3 HV OUT2 HV OUT1 HV OUT0 VPP Do Not Bond. For testing only ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 Not Bond. Leave Floating. ● Tel: 408-222-8888 ● www.supertex.com ...

Page 11

... DVNN -8373.0 -2686.0 AGND -8367.0 -2686.0 AVDD -8387.0 -2686.0 AVNN -8338.5 -2686.0 AGND -8341.0 -2686.0 ● Tel: 408-222-8888 ● www.supertex.com Y (μm) -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686.0 -2686 ...

Page 12

... HV 16 OUT Ampliﬁer outputs OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT OUT 33 VPP High voltage positive supply. There are two pads. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 12 ● Tel: 408-222-8888 ● www.supertex.com ...

Page 13

... Anode Anode side of a low voltage silicon diode that can be used to monitor die temperature. 96 Cathode Cathode side of a low voltage silicon diode that can be used to monitor die temperature. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 13 ● Tel: 408-222-8888 ● www.supertex.com ...

Page 14

... RSOURCE resistor value. Internally generated reference voltage. An external low voltage (1.0 - 10nF) capacitor needs to 99 BYP-VPP be connected across VPP and BYP-VPP. 100 VPP High voltage positive supply. There are two pads. ● 1235 Bordeaux Drive, Sunnyvale, CA 94089 14 ● Tel: 408-222-8888 ● www.supertex.com ...

Page 15

... 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 ...

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