Datasheet > GR581

GR581

更新时间： 2024-02-08 00:27:25

品牌	Logo	应用领域
其他 - ETC		/
页数	文件大小	规格书
4页	84K
描述
GR581 - Low noise Adaptive High Pass Filter with Independent Gain Block

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技术参数
数据手册

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GR581 技术参数

是否Rohs认证：	不符合	生命周期：	Obsolete
包装说明：	SOF, TSSOI10,.09,20	Reach Compliance Code：	unknown
风险等级：	5.92	JESD-30 代码：	R-PDSO-F10
JESD-609代码：	e0	功能数量：	1
端子数量：	10	最高工作温度：	40 °C
最低工作温度：	-10 °C	封装主体材料：	PLASTIC
封装代码：	SOF	封装等效代码：	TSSOI10,.09,20
封装形状：	RECTANGULAR	封装形式：	SMALL OUTLINE
电源：	1.3 V	认证状态：	Not Qualified
响应：	HP	子类别：	Active Filters
最大供电电流 (Isup)：	0.45 mA	标称供电电压 (Vsup)：	1.3 V
表面贴装：	YES	温度等级：	COMMERCIAL
端子面层：	Tin/Lead (Sn/Pb)	端子形式：	FLAT
端子节距：	0.5 mm	端子位置：	DUAL
传递特性：	BUTTERWORTH	Base Number Matches：	1

GR581 数据手册

Adaptive Highpass Filter

with Independent Gain Block

GR581DATASHEET

DESCRIPTION

FEATURES

The GR581 is a level-sensitive, adaptive highpass filter

comprised of a current controlled highpass filter, a half- wave

rectifier,avoltageregulatorformicrophonebiasandaseparate

preamplifier.

•

unity gain 12 dB/oct. highpass Butterworth filter

adaptive frequency range from 200 Hz to 2 kHz

rectifier threshold set to 82 dBSPL (adjustable)

low noise, typically 2.6 µV

The internal rectifier senses the long term average signal level

and controls the filter response by setting the control current

of the filter. The rectifier sensitivity, with respect to the input

signal, can be increased by placing the internal preamplifier

(A) before the filter section of the GR581. The preamplifier has

an internal 265 kΩ feedback resistor from its input to output, to

facilitate in setting the gain.

300 µA typical current drain

operates from 1.1 to 3 VDC

preamplifier with 56 dB open loop gain

PACKAGING

An increase of 20 dB above the rectifier threshold will

automatically increase the corner frequency one decade

above the initial corner frequency. The filter will only allow an

increase in corner frequency of one decade, regardless of

further increases in the input signal level.

• 10 pin MICROpac

• 10 pin PLID

• Chip (73 x 59 mils)

It is recommended that the attack and release times be set to

30 ms and 90 ms respectively. The average time period of a

speech frame is about 15 ms which is not long enough to

activatethefilter, howeverlongtermaveragenoise, whichcan

have time periods greater than 30 ms, will activate the filter

(providing that the amplitude is above the rectifier threshold).

The GR581 is an improved version of the LS581adaptive high

pass filter and has an identical pinout.

REG

VREG

B OUT

A IN

-A

RECTIFIER

10k

265k

RECT

RECT IN GND

A OUT

CAP

All resistors in ohms, all capacitors

in farads unless otherwise stated.

FUNCTIONAL BLOCK DIAGRAM

Revision Date: January 2001

Document No. 520 - 60 - 05

GENNUM CORPORATION P.O. Box 489, Stn A, Burlington, Ontario, Canada L7R 3Y3 tel. (905) 632-2996 fax: (905) 632-2814

Gennum Japan Corporation: C-101, Miyamae Village, 2-10-42 Miyamae, Suginami-ku, Tokyo 168-0081, Japan tel. (03) 3334-7700 fax:(03) 3247-8839

12 3 4

中文翻译

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与GR581相关器件

型号	品牌	获取价格	描述	数据表
GR581-CHIP	GENNUM	获取价格	Continuous Time Filter, DIE-10
GR581MICRO	ETC	获取价格	Analog Filter
GR581-MICRO	GENNUM	获取价格	Continuous Time Filter, 1 Func, Butterworth, Highpass, PDFP10, MICROPAK-10
GR581PLID	ETC	获取价格	Analog Filter
GR581-PLID	GENNUM	获取价格	Continuous Time Filter, 1 Func, Butterworth, Highpass, PDSO10, PLID, 10 PIN
GR581SLT	ETC	获取价格	Analog Filter
GR592	ETC	获取价格	GR592 - AGC-O Amplifier Chip
GR5A	YANGJIE	获取价格	SMC
GR5A	GOOD-ARK	获取价格
GR5B	GOOD-ARK	获取价格

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