Inside

• DSP Analog interface evaluation module
• 2.7 V 10-bit ADC for direct DSP interface
• First 3 V-LVDS flat panel solution
• RS-485 transceiver with integrated protection
• 10-bit, high speed, low power, DAC
• Self calibrating precision dual op amp
• 3.3-Volt Supply Voltage Supervisor Operates on 16 µA
• Switching chipset with flexible output stages
• Improved 64-bit video DAC
  - UARTs in industrial temp - IrDA controller in shrink package
  
• High speed ADC Evaluation module

EVM available for TLC320AD56 DSP Analog Interface

Product Features

• 16-bit sigma delta AIC
• Power dissipation: 100 mW (typ), Power down 2.5 mW (typ)
• Programmable serial port interface
• Internal 64X oversampling
• THD of 103 dB on ADC, and 96 dB on DAC
• Characterized for operation from 0°C to 70°C

An evaluation kit is now available to evaluate the performance of the TLC320AD56 analog interface circuit (AIC). The 'AD56 is a versatile 16-bit sigma-delta analog front end for modem and business audio applications. It provides high resolution signal conversion from analog-to-digital and from digital-to-analog using an oversampling sigma-delta technique.

This development kit allows prospective users of the TLC320AD56 to determine its capabilities with a minimum of cost and effort. This EVM can be directly connected to the TMS320C5x DSP Starter Kits (DSK), or to any other system with a compatible synchronous serial interface. The TLC320AD56 has a glueless interface, via a serial port, to the TMS320 family of digital signal processors (DSPs) reducing overall system cost and board space.

The EVM 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 TLC320AD56. The application report also describes the connections of the EVM to the DSK.

Some of the features of the TLC320AD56 include a typical signal to distortion ratio of

103 dB at 3 V and 85 dB at 5 V on the ADC channel and 96 dB on the DAC channel. It also offers a typical signal-to-noise ratio (SNR) of 86 dB on the ADC channel and 85 dB on the DAC channel. The ëAD56 consists of two serial synchronous conversion paths, one for each data direction, and includes an interpolation filter before the DAC and a decimation filter after the ADC. It also has a digital loopback function that allows for in-circuit system level tests.

The 'AD56 features a serial port interface whose options include reset, power-down, communications protocol, serial clock rate, and test mode. The power down mode reduces the power dissipation from the typical operating level of 100 mW to only 2.5 mW.

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 TLC320AD56 is available in the 28-pin PLCC, 28-pin SOIC, and the 48-pin TQFP package.

• TLC320AD56
• TMS320C5x