Inside

• Optoislated feedback amplifier with 1.24 V precision voltage reference
• EVM available for TLC320AD50 DSP analog interface
• 300 DPI linear sensor array with hold
• Precision Hi-Speed Light-to-Voltage Converters
• Low-power rail-to-rail op amps in SOT-23
• High output drive rail-to-rail op amp consumes only 50 µA per channel
• New CD-based "Designer's Guide and Data Book" allows for powerful searches
• 2.5 V Power management for DSP systems
• EVM available for TLC320AD75C ADA converter
• Programmable gain select is added to TI's combo family
• Single chip interface solution for the 9-pin GeoPort™ host
• 400 Mbps, high-speed data transmission
• PCI1220/1250A: Industry-leading CardBus soltions for tomorrow's applications
• Universal Serial Bus (USB) hub solutions

EVM available for TLC320AD50 DSP analog interface

Product Features

• 16-bit Sigma Delta converter
• Master/Slave Mode (supports up to 3 slaves)
• Differential output drives 600 load
• Single 5-V supply or 5 V analog and 3 V digital
• Power-down mode to 7.5 mW
• Glueless DSP interface
• Characterized for operation from 0°C to 70°C

An EVM is now available to evaluate the performance of the TLC320AD50 analog interface circuit (AIC). The 'AD50 is a versatile 16-bit sigma-delta analog front end for modem and business audio applications. It provides high resolution signal conversion using an oversampling sigma delta technique. The AD50 has internal 64 X oversampling on the ADC and 256 X oversampling on the DAC. The TLC320AD50 has a glueless interface, via a serial port, to the TMS320 family of digital signal processors (DSPs) reducing overall system cost and board space.

This EVM can be directly connected to the TMS320C54x DSP Starter Kit (DSKplus), or to any other system with a compatible synchronous serial interface. The kit comes complete with a data manual and applications report which describes the evaluation board and how to use it to demonstrate the performance of the TLC320AD50. The application report also describes the connections of the EVM to the DSK.

For more information on how to order the 'AD50 EVM, see the 'AD50 EVM page.

The TLC320AD50 AIC includes master/slave capability with support for up to three slaves, allowing this device to be used in multiple AIC applications such as voice enabled modems. It also provides differential outputs that can drive a 600 differential load.

The ‘AD50 offers excellent noise performance with typical signal to distortion ratio of 90 dB and typical signal to noise ratio of 89 dB on the ADC and DAC. With a 3-V digital interface, power down mode and low power dissipation of only 120 mW typical this device is ideal for battery operated equipment and interfacing to 3-V DSPs.

Additional features of the TLC320AD50 include: selectable conversion rate, reset, power-down, communications protocol, serial clock rate, gain control and system test mode (digital and analog loopback test mode).

Key applications of this device include V.34+ Modems, PCMCIA Fax Modems, DSP Analog Interface, Industrial Process Control, Acoustical Signal Processing, Noise Cancellation / Suppression, and general purpose data conversion.

The TLC320AD50 device is available in 28-pin SOIC (DW) and 48-pin TQFP (PT) packages.