Datasheet > DP8464BV

DP8464BV

更新时间： 2024-02-23 22:27:06

品牌	Logo	应用领域
美国国家半导体 - NSC		脉冲
页数	文件大小	规格书
26页	384K
描述
Disk Pulse Detector

阅读下载

中文翻译

获取价格

数据手册

如果您发现信息不准确，欢迎纠错

DP8464BV 数据手册

June 1989

DP8464B Disk Pulse Detector

General Description

The DP8464B Disk Pulse Detector utilizes analog and digital

circuitry to detect amplitude peaks of the signal received

from the read/write amplifier fitted with the heads of disk

drives. The DP8464B produces a TTL compatible output

which, on the positive leading edge, indicates a signal peak.

Electrically, these peaks correspond to flux reversals on the

magnetic medium. The signal from the read/write amplifier

when reading a disk is therefore a series of pulses with

alternating polarity. The Disk Pulse Detector accurately rep-

licates the time position of these peaks.

package. Normally, it will be fitted in the disk drive, and its

output may be directly connected to the DP8461 or the

DP8465 Data Separator.

Features

Wide input signal amplitude rangeÐfrom 20 mVpp to

660 mVpp differential

Data rates up to 15 Megabits/sec 2,7 code

On-chip differential gain controlled amplifier, differentia-

tor, comparator gating circuitry, and output pulse

generator

The DP8464B Disk Pulse Detector has three main sections:

the Amplifier, the time channel and the gate channel. The

Amplifier section consists of a wide bandwidth amplifier, a

full wave rectifier and Automatic Gain Control (AGC). The

time channel is made from the differentiator and its follow-

ing bi-directional one shot, while the gate channel is made

from the differential comparator with hysteresis, the D flip-

flop and its following bi-directional one shot.

Input capacitively coupled directly from the disk head

read/write amplifier

Adjustable comparator hysteresis

AGC and differentiator time constants set by external

components

TTL compatible digital Inputs and Outputs

Encoded Data Output may connect directly to the

DP8461 or DP8465 Data Separator

The Disk Pulse Detector is fabricated using an advanced

oxide isolated Schottky process, and has been designed to

function with data rates up to 15 Megabits/second. The

DP8464B is available in either a 300 mil wide 24-pin dual-in-

line package or a surface mount 28-pin plastic chip carrier

Standard drive supply: 12V 10%

Available in 300 mil wide 24-pin dual-in-line package, a

surface mount 28-pin plastic chip carrier package, or a

40-pin TapePak package

Block Diagram

Pin 5ÐNo connection

Pin 8ÐNo connection

TL/F/5283–7

Note: All pin numbers in this data sheet refer to the 24-pin dual-in-line package.

TapePakÉ is a registered trademark of National Semiconductor Corporation.

1995 National Semiconductor Corporation

TL/F/5283

RRD-B30M105/Printed in U. S. A.

12 3 4 5 6 7...26

中文翻译

下载PDF

与DP8464BV相关器件

型号	品牌	获取价格	描述	数据表
DP8464BV-1	NSC	获取价格	Disk Pulse Detector
DP8464BV-2	NSC	获取价格	Disk Pulse Detector
DP8464BV-2	TI	获取价格	PULSE DETECTOR, PQCC28, PLASTIC, LCC-28
DP8464BV-2/A+	NSC	获取价格	IC,DISK PULSE DETECTOR,BIPOLAR/AS-TTL,LDCC,28PIN,PLASTIC
DP8464BV-2/B+	NSC	获取价格	IC,DISK PULSE DETECTOR,BIPOLAR/AS-TTL,LDCC,28PIN,PLASTIC
DP8464BV-3	TI	获取价格	PULSE DETECTOR, PQCC28, PLASTIC, LCC-28
DP8464BV-3	NSC	获取价格	Disk Pulse Detector
DP8464BV-3/A+	NSC	获取价格	IC,DISK PULSE DETECTOR,BIPOLAR/AS-TTL,LDCC,28PIN,PLASTIC
DP8464BV-3/B+	ETC	获取价格	Disk Pulse Detector
DP8464BV4	NSC	获取价格	IC,DISK PULSE DETECTOR,BIPOLAR/AS-TTL,LDCC,28PIN,PLASTIC

与DP8464BV相关文章

MBRS340T3G手册解读：参数说明、产品特性及应用
2024-06-28

4
PMOS管背靠背连接：串联还是并联？
2024-06-28

4
高压电解电容的分类与选型策略
2024-06-28

5
数码管：基本概念、分类、技术发展及市场趋势
2024-06-27

9

产品中心

服务支持

精选活动

关于我们

帮助中心

DP8464BV

DP8464BV 数据手册

与DP8464BV相关器件

与DP8464BV相关文章

您还可以找

产品中心

服务支持

精选活动

关于我们

帮助中心

DP8464BV

DP8464BV 数据手册

与DP8464BV相关器件

与DP8464BV相关文章

您还可以找

您在本页遇到什么问题？