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New Programmable Dual 10-Bit Serial Digital-to-Analog Converter from Texas Instruments Offers High-Speed, Low-Power Digital Signal Processor Interface

DALLAS (July 28, 1997) - Strengthening its family of 10-bit digital-to-analog converters (DACs), Texas Instruments, the worlds leading provider of digital signal processing solutions, introduces a new programmable dual 10-bit, serial DAC. This DAC provides an easy interface to TI’s line of TMS320 digital signal processors (DSPs), and is ideal in applications such as battery operated and remote controls, machine and motion controls, and cellular telephones.

This device, designated the TLC5617, converts serial digital input data into one or both of the two analog output signals. The 16-bit digital control data word is obtained from a DSP or microprocessor over a 3-wire serial bus that is CMOS compatible. The TLC5617 is designed to provide an interface from the digital domain to the analog domain with two 10-bit analog outputs. The TLC5617 has a buffered reference input which makes the input impedance independent of the input code. It also is a dual output device with three programmable power-consumption/speed-of-conversion modes of operation (power-down, slow mode and fast mode). The dual 10-bit TLC5617 provides an alternative to current single 10-bit DACs, and gives designers more system choices.

Features/Benefits

  • Price
Lowers system costs.
  • Buffered reference input
Gives the engineer more ease in designing the reference generator circuitry, due to the input impedance being independent of code.
  • 16-bit serial interface
Eases DSP interface.
  • Small package
Gives the designer more board space.
  • Dual analog outputs
Performs the functions of two DACs in one 8-pin package.

End Equipment Applications

Applications for the TLC5617 include:

  • Battery-powered test instruments
  • Digital offset and gain adjustment
  • Battery-operated/remote industrial controls
  • Machine and motion controls
  • Cellular telephones

Pricing, Packaging and Availability

The TLC5617 is now available from TI and its authorized distributors. The TLC5617 is available in an 8-pin small-outline integrated circuit (SOIC) or an 8-pin dual-inline package (DIP) and is available in commercial and industrial temperature ranges. The TLC5617 suggested pricing starts at $4.57 in quantities of 1,000.

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