Article List :  2008/08/08 : 3 posted

PBL3766 - Subscriber Line Interface Circuit

Ericsson 2008/08/08 11:18

Description
The PBL 3766 Subscriber Line Interface Circuit (SLIC) is a monolithic integrated circuit, manufactured in 75 V bipolar technology.
The PBL 3766 SLIC facilitates the design of cost effective, high performance on-premises (ONS) analog line interface cards for PABX systems and terminal adapters.
Small package size and few required external components result in a miniaturized design.
The PBL 3766 programmable, constant current loop feed system can operate with battery supply voltages between -24 V and -58 V.
The SLIC incorporates loop current and ring trip detection functions as well as a ring relay driver.
The two- to four-wire and four- to two-wire voice frequency (vf) signal conversion, i.e. the hybrid function, is provided by the SLIC in conjunction with either a conventional or a programmable CODEC/filter.
The PBL 3766 package is a 22 pin, plastic dual-in-line (batwing) or a 28-pin, plastic j-leaded chip carrier (PLCC).
The differences between PBL 3766 and PBL 3766/6 are the specifications for balance, output offset voltage, and insertion loss.

Key Features
* Low cost
* Few external components
* Programmable, constant current loop feed
* Line feed characteristics independent of battery supply variations
* -24 V to -58 V battery supply voltage range
* Detectors
- programmable loop current detector
- ring trip detector
* Ring relay driver
* Hybrid function with conventional or programmable CODEC/filters
* Line terminating impedance, complex or real, set by a simple external network or controlled by a programmable CODEC/filter
* Idle noise typ. -83 dBmp, typ. 7 dBrnC
* Low on-hook power dissipation: 20 mW @ -28 V, 35 mW @ -48 V
* Tip-ring open circuit state for subscriber loop power denial
* On-hook transmission

PBL3766/6N
PBL3766QN
 

PBL3766 - Subscriber Line Interface Circuit

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HSD16M64D16A - Synchronous DRAM Module 128Mbyte (16Mx64bit), DIMM based on 8Mx8, 4Banks, 4K Ref., 3.3V

Hanbit 2008/08/08 11:04

GENERAL DESCRIPTION
The HSD16M64D16A is a 16M x 64 bit Synchronous Dynamic RAM high-density memory module. The module consists of sixteen CMOS 8M x 8 bit with 4banks Synchronous DRAMs in TSOP-II 400mil packages and 2K EEPROM in 8-pin TSSOP package on a 168-pin glass-epoxy.
Two 0.33uF-decoupling capacitors are mounted on the printed circuit board in parallel for each SDRAM.
The HSD16M64D16A is a DIMM (Dual in line Memory Module) and is intended for mounting into 168-pin edge connector sockets.
Synchronous design allows precise cycle control with the use of system clock.
I/O transactions are possible on every clock cycle.
Range of operating frequencies, programmable latencies allows the same device to be useful for a variety of high bandwidth, high performance memory system applications All module components may be powered from a single 3.3V DC power supply and all inputs and outputs are LVTTL-compatible.

FEATURES
* Part Identification
- HSD16M64D16A-F/10L : 100MHz (CL=3)
- HSD16M64D16A-F/10 : 100MHz (CL=2)
- HSD16M64D16A-F/12 : 125MHz (CL=3)
- HSD16M64D16A-F/13 : 133MHz (CL=3)
- F means Auto & Self refresh with Low-Power (3.3V)
* Burst mode operation
* Auto & self refresh capability (4096 Cycles/64ms)
* LVTTL compatible inputs and outputs
* Single 3.3V ±0.3V power supply
* MRS cycle with address key programs
- Latency (Access from column address)
- Burst length (1, 2, 4, 8 & Full page)
- Data scramble (Sequential & Interleave)
* All inputs are sampled at the positive going edge of the system clock
* The used device is 8M x 8bit x 4Banks SDRAM

HSD16M64D16A-13
HSD16M64D16A-12
HSD16M64D16A-10L
 

HSD16M64D16A - Synchronous DRAM Module 128Mbyte (16Mx64bit), DIMM based on 8Mx8, 4Banks, 4K Ref., 3.3V

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ALD4701 - QUAD MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER

Advanced Linear Devices 2008/08/08 10:41

GENERAL DESCRIPTION
The ALD4701 is a quad monolithic CMOS micropower high slew rate operational amplifier intended for a broad range of analog applications using ±1V to ±6V dual power supply systems, as well as +2V to +12V battery operated systems.
All device characteristics are specified for +5V single supply or ±2.5V dual supply systems.
Total supply current for all four operational amplifiers is 1mA maximum at 5V supply voltage.
It is manufactured with Advanced Linear Devices' enhanced ACMOS silicon gate CMOS process.
The ALD4701 is designed to offer a trade-off of performance parameters providing a wide range of desired specifications.
It offers the popular industry standard pin configuration of LM324 types and ICL 7641 types.
The ALD4701 has been developed specifically for the +5V single supply or ±1V to ±6V dual supply user.
Several important characteristics of the device make application easier to implement at these voltages.
First, each operational amplifier can operate with rail to rail input and output voltages.
This means the signal input voltage and output voltage can be equal to or near to the positive and negative supply voltages.
This feature allows numerous analog serial stages and flexibility in input signal bias levels.
Secondly, each device was designed to accommodate mixed applications where digital and analog circuits may operate off the same power supply or battery.
Thirdly, the output stage can typically drive up to 50pF capacitive and 10KW resistive loads.
These features, combined with extremely low input currents, high open loop voltage gain of 100V/mV, useful bandwidth of 700KHz, a slew rate of 0.7V/ms, low power dissipation of 5mW, low offset voltage and temperature drift, make the ALD4701 a versatile, micropower quad operational amplifier.
The ALD4701, designed and fabricated with silicon gate CMOS technology, offers 1pA typical input bias current.
Due to low voltage and low power operation, reliability and operating characteristics, such as input bias currents and warm up time, are greatly improved.

FEATURES
* All parameters specified for +5V single supply or ±2.5V dual supply systems
* Rail-to-rail input and output voltage ranges
* Unity gain stable
* Extremely low input bias currents -- 1.0pA
* High source impedance applications
* Dual power supply ±1.0V to ±6.0V
* Single power supply +2V to +12V
* High voltage gain
* Output short circuit protected
* Unity gain bandwidth of 0.7MHz
* Slew rate of 0.7V/ms
* Low power dissipation
* Symmetrical output drive

APPLICATIONS
* Voltage follower/buffer/amplifier
* Charge integrator
* Photodiode amplifier
* Data acquisition systems
* High performance portable instruments
* Signal conditioning circuits
* Sensor and transducer amplifiers
* Low leakage amplifiers
* Active filters
* Sample/Hold amplifier
* Picoammeter
* Current to voltage converter

ALD4701A
ALD4701B

 

ALD4701 - QUAD MICROPOWER RAIL-TO-RAIL CMOS OPERATIONAL AMPLIFIER

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TAG Amplifier