Texas Instruments Enters the 12-Bit D/A Converter Market, Growing Existing Portfolio to Address High Speed Requirements
DALLAS (August 25, 1997) -- A new programmable dual 12-bit voltage output digital-to-analog converter (DAC) offering high speed and low power is now available from Texas Instruments. This device, which expands TI’s DAC product family, is perfect in applications such as digital servos, machine and motion controls and communications systems.
This device, designated the TLC5618, features programmable settling time versus power dissipation for power sensitive applications. In fast mode, the device has a settling time of 2.5µS and dissipates 8mW of power. In slow mode, the power dissipation is reduced to 3mW and settling time is increased to 12.5µS. A software programmable power-down mode further reduces supply current to 1µA. A 3-wire serial interface is provided for easy interface to DSPs and microcontrollers. The serial data is specified for operation up to 20MHz clock rate, meeting the needs of new high-speed serial ports. The 16-bit digital data input can be updated at rates up to 1.2MHz. Other features of the TLC5618 include a high-impedance buffered reference input, a power-on reset function, the option of simultaneous or independent update of each DAC, and a 5V single supply operation. Packaged in an 8-pin small-outline integrated circuit (SOIC), the TLC5618 saves board space. The combination of flexibility and performance in the TLC5618 provides designers with the ability to optimize their designs.
Features/Benefits
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Performs the functions of two DACs in one 8-pin package.
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Gives maximum flexibility to the designer of a multiple DAC design since both analog outputs can be updated at the same time with either the same code or with a different code.
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Lets the engineer optimize the system performance versus power consumed as required by the application. Since this is a programmable feature, one design can conserve energy when speed is not required and have high-speed performance when it is required.
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Allows the system to save power when conversions are required, resulting in longer battery life in portable applications.
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Gives the engineer more ease in designing the reference generator circuitry since the source impedance of the reference can be relatively high with low drive requirements.
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Eases DSP interface and reduces package pin count, thus saving board space.
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Gives the designer more board space and reduces system cost.
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Lowers system cost.
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End Equipment Applications
Applications for the TLC5618 include:
- Battery-powered test instruments
- Digital offset and gain adjustment
- Battery-operated/remote industrial controls
- Machine and motion controls
- Communications systems
- Digital servos
Pricing, Packaging and Availability
The TLC5618 is now available from TI and its authorized distributors. The TLC5618 is available in an 8-pin SOIC or an 8-pin dual-inline package (DIP) and is available in commercial and industrial temperature ranges. Suggested pricing for the TLC5618 starts at $4.20 in quantities of 1,000.
Related Documentation: