In This Issue

Special Focus:
Zoom in on TI's new data converters

   DSP Solutions
All in one: New integrated
  development environment cuts
  coding time
Power savers

   Analog and Mixed-Signal
New amplifiers offer
  design benefits

   News Briefs
First intelligent pre-FET driver
  with dynamic fault threshold
Cost-effective up-integrated
  LED driver
Universal asynchronous
  receiver/transmitter

   Resource Guide
Avnet expands TI tools
  and support
New Online capability creates
  convenience for customers
Customize your own TI
  Web page!
App Report: Extended precision
  IIR filter design on the
  TMS320C54x DSP
WW Tech Support

   Wireless
Process technology and a new
  device to enhance wireless apps

Trade Shows

New amplifiers offer
design benefits

A new family of low-power rail-to-rail input/output operational amplifiers deliver exceptional output drive, AC performance and low noise. The TLV246x devices, which offer simplicity of evaluation and design-in, are ideally suited for portable equipment, cellular, telecommunications, data acquisition and signal conditioning applications.

TI's TLV246x family features rail-to-rail I/O operation through extended common mode input range, which exceeds the supply rails by 200 mV, and output drive that will source and sink more than +/Ð90 mA. This exceptional output drive overcomes a major limitation of older rail-to-rail I/O amplifiers. In addition, the 11 nV/ÃHz noise floor and 100-mV input offset voltage are among the industry's lowest. The devices operate over a supply voltage range of 2.7 V to 6 V.

Highlights of the TLV246x family's AC performance include 4.4 MHz bandwidth and 1.8-V/µs slew rate. To prolong battery life in portable applications, the devices include a shutdown capability that minimizes supply current to an ultra-low 0.6 µA/channel and places the output in a high impedance state.

Customers can receive, at no charge, TI's innovative new Universal Op Amp Evaluation Module, which accelerates evaluation of single and dual versions of TI's op amps, including those in the TLV246x family.

The TLV246x family includes single, dual and quad amplifier members, available with and without shutdown. All are fully specified at 3 V and 5 V. Package and temperature options include SOT-23, MSOP, TSSOP, SOIC and PDIP. All TLV246x devices are characterized for operation from 0° C to 70° C and -40° C to 125° C.

For complete information, order: Sample Pack (SLOP222) and EVM Boards (SLOP225). See Related Product Information.

Audio power amps

Four new stereo audio power amplifiers (APAs) offer designers greater flexibility in choosing the desired levels of power consumption and fidelity for their systems.

The new offerings include the TPA152, a single-ended APA that delivers clean, crisp sound to high-fidelity stereo headphones for portable compact disc (CD) players, notebook computers and voice recorders. The TPA152 also serves as an output buffer for audio coder/decoders (codecs) in PCs and in applications where a high-performance headphone/line-out amplifier is needed.

In addition, the new TPA102, TPA112 and TPA122 (TPA1x2) APAs provide high-quality stereo output with low-power consumption for 32-Ohm headphones. The TPA1x2 devices feature common APA pinouts to facilitate the enhancement of existing battery-operated designs with the use of these components.

With an extremely low total harmonic distortion plus noise (THD+N) of less than 0.02 percent at 1 kHz, the TPA152 is among the highest-fidelity solutions available for driving headphones. For 10-kilo Ohm loads, THD+N drops to just 0.005 percent at 1 kHz. With an output drive of 75 milliWatts (mW) per channel into a 32-Ohm load, the TPA152 is well suited for use in a variety of mobile, desktop and consumer applications.

The other members of the family operate from a supply of 2.5 V to 5 V. Each device delivers 150 mW of stereo output from an ultra small MSOP package. The TPA102 and TPA122 are optimized for PC power supplies and offer a shutdown mode that minimizes supply current to 60 micro Amps. The TPA112 is optimized for audio applications that require a standard op amp pinout.

TI's TPA152, TPA102, TPA112 and TPA122 are available now from TI and authorized distributors. Evaluation modules (EVMs) are available for the devices. For details, check website www.ti.com/sc/docs/msp/tools/audio.htm.

For complete information, order: Data Sheets (SLOS213, SLOS212 and SLOS211). See Related Product Information.