Мощен Н.Ч усилвател 30W - LM4700 30 Watt Audio Power Amplifier with Mute and Standby Modes -

 LM4700  30 Watt Audio Power Amplifier with Mute and Standby Modes - Мощен Н.Ч усилвател 30W

 Цена на дребно: 20 лв

Описание и технически параметри на линка LM4700
AN-1645: Application Note 1645 LM4702 Driving a MOSFET Output Stage 
AN-1490: Application Note 1490 LM4702 Power Amplifier

Features

SPiKe Protection

Minimal amount of external components necessary

Quiet fade-in/out mute function

Power conserving standby-mode

Isolated 11-lead TO-220 package

Wide supply range 20V - 66V 

Description

The LM4700 is an audio power amplifier capable of delivering typically 30W of continuous average output power into an 8Ω load with less than 0.1% THD+N.

The LM4700 has an independent smooth transition fade-in/out mute and a power conserving standby mode which can be controlled by external logic.

The performance of the LM4700, utilizing its Self Peak Instantaneous Temperature (°Ke) (SPiKe™) protection circuitry, places it in a class above discrete and hybrid amplifiers by providing an inherently, dynamically protected Safe Operating Area (SOA). SPiKe protection means that these parts are completely safeguarded at the output against overvoltage, undervoltage, overloads, including thermal runaway and instantaneous temperature peaks.

Key Specification

THD+N at 1kHz at continuous average output power of 25W into 8Ω:	0.1% (max)
THD+N from 20Hz to 20kHz at 30W of continuous average output power into 8Ω:	0.08% (typ)
Standby current:	2.1mA (typ)

Applications

Component stereo

Compact stereo

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 Нови интегрални схеми и цени на линка :  National Semiconductor

TP3410 ISDN Basic Access Echo-Cancelling 2B1Q U Transceiver

TP3410   ISDN Basic Access Echo-Cancelling 2B1Q U Transceiver

 Цена на дребно: 60 лв
 Описание и технически параметри на линка TP3410
More Application Notes:

	AN-665: AN-665: Application Note 665 TP3420A S Interface Device (SID) User's Guide (1223 Kbytes; 02-Mar-1999)
	AN-913: AN-913: TP3410 2BIQ U Interface Device Users Manual (436 Kbytes; 05-Aug-1995)
	AN-492: AN-492: Intuitive ISDN - An ISDN Tutorial (115 Kbytes; 04-Nov-1995)
	AN-796: AN-796: ISDN Basic Access Components for the Design of ISDN Peripherals (227 Kbytes;

Features

·  2 "B'+"D' channel 160 kbps transceiver for LT and NT

·  Meets ANSI T1.601 U.S. Standard

·  2B1Q line coding with scrambler/descrambler

·  Range exceeds 18 kft of #26 AWG

·  >70 dB adaptive echo-cancellation and equalization

·  On-chip timing recovery, no precision external components

·  Direct connection to small line transformer

·  Automatic activation controller

·  Selectable digital interface formats:

·  TDM with time-slot assigner up to 64 slots, plus MICROWIRE™ control interface

·  GCI (General Circuit Interface), or

·  IDL (Inter-chip Digital Link)

·  Backplane clock DPLL allows free-running XTAL

·  Elastic data buffers meet Q.502 wander/jitter for Slave-slave mode on PBX Trunk Cards and DLC

·  EOC and spare bits access with automatic validation

·  Block error counter

·  6 loopback test modes

·  Single +5V supply, 325 mW active power

·  20 mW idle mode with line signal "wake-up" detector

Description

The TP3410 is a complete monolithic transceiver for ISDN Basic Access data transmission at either end of the U interface. Fully compatible with ANSI specification T1.601, it is built on National's advanced double-metal CMOS process, and requires only a single +5V power supply. A total of 160 kbps full-duplex transmission on a single twisted-pair is provided, with user-accessible channels including 2 "B' channels, each at 64 kbps, 1 "D' channel at 16 kbps, and an additional 4 kbps for loop maintenance. 12 kbps of bandwidth is reserved for framing. 2B1Q Line coding is used, in which pairs of binary bits are coded into 1 of 4 quantum levels for transmission at 80k symbols/sec (hence 2 Binary/1 Quaternary). To meet the very demanding specifications for <1 in 10e7 Bit Error Rate even on long loops with crosstalk, the device includes 2 Adaptive Digital Signal Processors, 2 Digital Phase-locked Loops and a controller for automatic activation.

The digital interface on the device can be programmed for compatibility with either of two types of control interface for chip control and access to all spare bits. In one mode a Microwire serial control interface is used together with a 2B+D digital interface which is compatible with the Time-division Multiplexed format of PCM Combo devices and backplanes. This mode allows independent time-slot assignment for the 2 B channels and the D channel.

Alternatively, the GCI (General Circuit Interface) may be selected, in which the 2B+D data is multiplexed together with control, spare bits and loop maintenance data on 4 pins.

Applications

·  LT, NT-1, NT-2 Trunks, U-TE's, Regenerators etc.

·  Digital Loop Carrier

·  POTS Pair-Gain Systems

·  Easy Interface to:

·  Line Card Backplanes

·  "S" Interface Device: TP3420A

·  Codec/Filter Combos: TP3054/7 and TP3075/6

·  LAPD Processor: MC68302, HPC16400

·  HDLC Controller: TP3451

Продажба и доставка на електронни елементи, директни доставки от производители.
За проверка на складови наличности и поръчки пишете на e-mail: plovdiv.services@gmail.com

Sales and supply of electronic components, supplies direct from manufacturers.

e-mail: plovdiv.services@gmail.com

 Нови интегрални схеми и цени на линка :  National Semiconductor