Datasheet > HC3-55536-5

HC3-55536-5

更新时间： 2024-11-10 22:33:15

品牌	Logo	应用领域
英特矽尔 - INTERSIL		/
页数	文件大小	规格书
1页	17K
描述
Continuously Variable Slope Delta-Demodulator (CVSD)

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HC3-55536-5 数据手册

Low Bit Rate Voiceband Encoders/Decoders

Semiconductor

HC-55536

Continuously Variable Slope

Delta-Demodulator (CVSD)

March 1993

Features

Description

• All Digital

The HC-55536 is a CMOS integrated circuit used to convert

serial NRZ digital data to an analog (voice) signal. Conver-

sion is by delta demodulation, using the Continuously

Variable Slope (CVSD) method of demodulation.

• Requires Few External Parts

• Low Power Drain: 1.5mW from Single 3V to 6V Supply

While signals are compatible with other CVSD circuits, the

internal design is unique. The analog loop ﬁlters have been

replaced by digital ﬁlters which use very low power and

require no external timing components. This digital approach

allows inclusion of many desirable features, which otherwise

would be difﬁcult to implement. The device is usable from

9Kbits/s to above 64kbits/s, and may be easily conﬁgured

with the HC-55564 CVSD for a complete transmit/receive

voice channel.

• Time Constants Determined by Clock Frequency; No

Calibration or Drift Problems; Automatic Offset

Adjustment

• Filter Reset by Digital Control

• Automatic Overload Recovery

• Automatic “Quiet” Pattern Generation

Applications

Ordering Information

• Voice Decoder for Digital Systems and Speech

Syntheses

PART

TEMP.

NUMBER

RANGE ( C)

PACKAGE

14 Ld CERDIP

14 Ld PDIP

PKG. NO.

• Voicemail

HC1-55536-5

HC1-55536-9

HC3-55536-5

HC3-55536-9

0 to 75

• Audio Manipulations; Delay Lines, Echo Generation/

Suppression, Special Effects, etc.

-40 to 85

0 to 75

• Pagers/Satellites

-40 to 85

14 Ld PDIP

Functional Diagram

Pinout

HC-55536

(PDIP, CERDIP)

TOP VIEW

(13) (12)

FORCE ZERO

DIGITAL IN

VDD

14 NC

13 FZ

3 BIT

SHIFT

AOUT

12 DIGITAL INPUT

SYLLABIC

DIGITAL

MODULATOR

DIGITAL

FILTER

11 NC

10 NC

4.0msec

CLOCK

DIGITAL GND

SIGNAL

ESTIMATE

DIGITAL FILTER

1.0msec

10 BIT

DAC

Z_O

A_OUT

(3)

CLOCK

(9)

V_DDDIGITAL GND

(1) (8)

CAUTION: These devices are sensitive to electrostatic discharge. Users should follow proper IC Handling Procedures.

File Number 2888.1

4-252

中文翻译

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