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HV257

32-Channel High Voltage Sample and Hold Amplifier Array

Status: In Production

Features:

  • 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
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Overview
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Development Environment
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RoHS Information
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Device Overview

Summary

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, VDD and VNN. 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 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 VPP 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 RSOURCE resistor controls the maximum sourcing current, and an external RSINK 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.

Additional Features
  • 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
Parametrics
Name
Value
Slew Rate (V/µs)
2
Closed Loop Gain (V/V)
72
Feedback Resistance (M Ω)
12
HVOUT Source max (µA)
500
HVOUT Sink max (µA)
500
HVOUT Capacitive Load max (pF)
3000
Output Current Limit
Amp with S/H
Package
MQFP-100

Documents

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User Guides

06/25/2014
1160KB

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RoHS Information

Part Number
Device Weight (g)
Shipping Weight (Kg)
Lead Count
Package Type
Package Width
Solder Composition
JEDEC Indicator
RoHS
China EFUP
HV257FG-G
0.725800
12.121212
100
MQFP
14x20x3.15mm
Matte Tin
e3
To see a complete listing of RoHS data for this device, please Click here
Shipping Weight = Device Weight + Packing Material weight. Please contact sales office if device weight is not available.

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