HV257 SUTEX [Supertex, Inc], HV257 Datasheet

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HV257

Manufacturer Part Number
HV257
Description
32 CHANNEL HIGH VOLTAGE SAMPLE AND HOLD AMPLIFIER ARRAY
Manufacturer
SUTEX [Supertex, Inc]
Datasheet

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Company
Part Number
Manufacturer
Quantity
Price
Part Number:
HV257FG-G
Manufacturer:
Supertex
Quantity:
135
Features
❑ 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
Application
❑ MEMS (microelectromechanical systems) driver
❑ Piezoelectric transducer driver
❑ Optical crosspoint switches (using MEMS technology)
Typical Application
32 independent high voltage amplifiers
Processor
Micro
DAC
Sample and Hold Amplifier Array
Supertex HV257
EN
V
A
A
A
A
A
SIG
2
3
4
0
1
32-Channel High Voltage
Power Supply
Low Voltage
DGND
Low Voltage
and Hold
Channel
Sample
Select
32
1
OpAmp Array
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, up to 300V, and two low voltage supplies, V
and V
All 32 sample and hold circuits share a common analog input,
Vsig. The individual sample and hold circuits are selected by a
5 to 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 0V
to 4.096V. The input voltage can be up to 5.0V, but the output will
saturate. The maximum output voltage swing is 5V below the V
high voltage 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.
Power Supply
High Voltage
NN
AGND
V
.
NN
HV
HV
HV
HV
HV
HV
OUT
OUT
OUT
OUT
OUT
OUT
0
1
2
3
30
31
MEMS
Array
x
y
y
x
SOURCE
HV257
HV257
resistor
A122104
A122104
SINK
DD
PP

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HV257 Summary of contents

Page 1

... Processor EN 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, V and V All 32 sample and hold circuits share a common analog input, Vsig ...

Page 2

... V/µ V/µ 300V KHz PP dB 75.6 V/V MΩ 3000 pF µA Ω 715 µA Ω 715 250 KΩ 250 KΩ HV257 = 0V, No Load A122104 ...

Page 3

... NN Acceptable Power Up Sequences Acceptable Power Down Sequences 1) Inputs & Anode Inputs & Anode HV257 Units Conditions mV input referred KΩ pF V/s output referred V Units Conditions µ µA ...

Page 4

... To internal analog V bus NN To internal digital V bus DD To internal digital V bus S S OUT H S OUT 4 Cathode 71R 71R 71R R HV257 HV 0 OUT HV 1 OUT HV 31 OUT A122104 ...

Page 5

... HV257 A122104 ...

Page 6

... MQFP (top view Pin Configuration AGND AGND 6 HV257 DGND AGND V SIG A122104 ...

Page 7

... OUT27 HV OUT26 HV OUT25 HV OUT24 HV OUT23 HV OUT22 HV OUT21 HV OUT20 HV 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 Not Bond. Leave Floating. 7 HV257 A122104 ...

Page 8

... Pad Coordinates Chip size: 17004µm x 5480µm Center of die is (0,0) DOC. #: DSFP-HV257 A122104 8 HV257 A122104 ...

Page 9

LEAD MQFP PACKAGE OUTLINE (FG 0.551 (14.0) 0.677 (17.2) 100 0.063 (1.6) 1 0.1063 ± 0.0079 (2.70 ± 0.20) 0.0111 ± 0.013 (2.825 ± 0.325) Note: C ircle (e. indicates ...

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