TP3070-X

更新时间： 2024-11-08 23:37:07

品牌	Logo	应用领域
美国国家半导体 - NSC		/
页数	文件大小	规格书
26页	404K
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数据手册

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TP3070-X 数据手册

April 1994

TP3070, TP3071, TP3070-X

COMBO^®II Programmable PCM CODEC/Filter

General Description

Features

n Complete CODEC and FILTER system including:

— Transmit and receive PCM channel filters

— µ-law or A-law companding encoder and decoder

— Receive power amplifier drives 300Ω

— 4.096 MHz serial PCM data (max)

n Programmable Functions:

The TP3070 and TP3071 are second-generation combined

PCM CODEC and Filter devices optimized for digital switch-

ing applications on subscriber line and trunk cards. Using

advanced switched capacitor techniques, COMBO II com-

bines transmit bandpass and receive lowpass channel filters

with a companding PCM encoder and decoder. The devices

are A-law and µ-law selectable and employ a conventional

serial PCM interface capable of being clocked up to

4.096 MHz. A number of programmable functions may be

controlled via a serial control port.

— Transmit gain: 25.4 dB range, 0.1 dB steps

— Receive gain: 25.4 dB range, 0.1 dB steps

— Hybrid balance cancellation filter

— Time-slot assignment; up to 64 slots/frame

— 2 port assignment (TP3070)

— 6 interface latches (TP3070)

— A or µ-law

— Analog loopback

— Digital loopback

n Direct interface to solid-state SLICs

n Simplifies transformer SLIC; single winding secondary

n Standard serial control interface

n 80 mW operating power (typ)

Channel gains are programmable over a 25.4 dB range in

each direction, and a programmable filter is included to en-

able Hybrid Balancing to be adjusted to suit a wide range of

loop impedance conditions. Both transformer and active

SLIC interface circuits with real or complex termination im-

pedances can be balanced by this filter, with cancellation in

excess of 30 dB being readily achievable when measured

across the passband against standard test termination net-

works.

To enable COMBO II to interface to the SLIC control leads, a

number of programmable latches are included; each may be

configured as either an input or an output. The TP3070 pro-

vides 6 latches and the TP3071 5 latches.

n 1.5 mW standby power (typ)

n Designed for CCITT and LSSGR applications

n TTL and CMOS compatible digital interfaces

n Extended temperature versions available for −40˚C to

+85˚C (TP3070V-X)

Note: See also AN-614, COMBO II application guide.

COMBO^®and TRI-STATE^®are registered trademarks of National Semiconductor Corporation.

DS008635

www.national.com

12 3 4 5 6 7...26

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与TP3070-X相关器件

型号	品牌	获取价格	描述	数据表
TP3071	NSC	获取价格	COMBO II Programmable PCM CODEC/Filter
TP3071	TI	获取价格	TP3070, TP3071, TP3070-X COMBO II Programmable PCM CODEC/Filter
TP3071AJ	ETC	获取价格	A-Law/u-Law CODEC
TP3071AJ-X	ETC	获取价格	A-Law/u-Law CODEC
TP3071AN	NSC	获取价格	COMBO II Programmable PCM CODEC/Filter
TP3071AN-G	NSC	获取价格	COMBO II Programmable PCM CODEC/Filter
TP3071J	NSC	获取价格	COMBO II Programmable PCM CODEC/Filter
TP3071J-X	TI	获取价格	A/MU-LAW, PROGRAMMABLE CODEC, CDIP20, CERAMIC, DIP-20
TP3071N	NSC	获取价格	COMBO II Programmable PCM CODEC/Filter
TP3071N-G	NSC	获取价格	Engineering Project Manager

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