HV257FG-G

更新时间： 2024-02-23 04:42:07

品牌	Logo	应用领域
超科 - SUPERTEX		放大器功率放大器
页数	文件大小	规格书
13页	1211K
描述
Sample and Hold Circuit, 1 Func, Sample, 4us Acquisition Time, PQFP100, 20 X 14 MM, 3.15 MM HEIGHT, 0.65 MM PITCH, GREEN, MS-022GC-2, MQFP-100

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HV257FG-G 技术参数

生命周期：	Active	包装说明：	DIE,
Reach Compliance Code：	compliant	ECCN代码：	EAR99
HTS代码：	8542.33.00.01	风险等级：	5.75
放大器类型：	SAMPLE AND HOLD CIRCUIT	JESD-30 代码：	R-XUUC-N96
JESD-609代码：	e0	负供电电压上限：	-7 V
功能数量：	1	端子数量：	96
封装主体材料：	UNSPECIFIED	封装代码：	DIE
封装形状：	RECTANGULAR	封装形式：	UNCASED CHIP
峰值回流温度（摄氏度）：	NOT SPECIFIED	认证状态：	Not Qualified
采样并保持/跟踪并保持：	SAMPLE	子类别：	Sample and Hold Circuit
供电电压上限：	8 V	表面贴装：	YES
端子面层：	TIN LEAD	端子形式：	NO LEAD
端子位置：	UPPER	处于峰值回流温度下的最长时间：	NOT SPECIFIED
Base Number Matches：	1

HV257FG-G 数据手册

HV257

32-Channel High Voltage

Sample and Hold Ampliﬁer Array

Features

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_DDand V_NN.

► 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

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

. The individual sample and hold circuits are selected by

a^S5^IGto 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_PPhigh voltage supply. The outputs can drive

capacitive loads of up to 3000pF.

► Layout ideal for die applications

Applications

► MEMS (microelectromechanical systems) driver

► Piezoelectric transducer driver

► Optical crosspoint switches (using MEMS technology)

The maximum output source and sink current can be adjusted

by using two external resistors. An external R

resistor

controls the maximum sourcing current, and an^Se^Ox^URte^CErnal R_SINK

resistor controls the maximum sinking current. The current

limit is approximated 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.

Typical Application Circuit

High Voltage

Power Supply

Supertex HV257

HV_OUT

V_SIG

DAC

HV_OUT

Low Voltage

Power Supply

HV_OUT

A₀

HV_OUT3

Micro

Processor

A₁

A₂

High Voltage

OpAmp Array

Low Voltage

Channel

Select

Sample

and Hold

MEMS

Array

A₃

A₄

HV_OUT30

HV_OUT31

A_GND

D_GND

V_NN

12 3 4 5 6 7...13

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