TI introduces quad-channel digital-to-analog converter family

Mumbai

26th February 2008

Texas Instruments Incorporated (TI) introduced a family of quad-channel
digital-to-analog converters (DAC) with ultra-low glitch (0.15nV-s) and an
internal 2.5V reference with 2ppm/C temperature drift and 0.02 percent initial
accuracy.

This multi-purpose family of 16-, 14- and 12-bit devices offers multi-channel
performance with the combination of low power consumption and small footprint,
making them attractive options for portable and high channel count systems in
industrial process control, data acquisition and instrumentation applications.

The DAC8564/65 (16-bit) provides +/- 0.5 LSB differential nonlinearity (DNL)
and +/- 4LSB integral nonlinearity (INL). The DAC8164/65 (14-bit) and DAC7564/65
(12-bit) offer a relative accuracy of +/- 1LSB. Very low power consumption
(2.9mW at 3V) and a power down feature (1.3uA at 5V) extend battery life in
portable applications.

The DAC8564 and DAC8565 build upon TI's recently released DAC8560 and DAC855x
series which offer minimizing code-to-code output transient voltages (glitch).
The low-glitch performance solves the common DAC problem of unwanted transient
voltages which cause ringing in closed-loop systems and create harmonic
distortion during waveform generation.

Wider bandwidth signals are supported by a fast settling time of 10us to
+/-0.003 percent of full-scale range. Additional features include power-on-reset
(POR) to zero output voltage or programmable POR to either zero or mid-scale.
This allows support of either binary or two's complement binary output data
formats. The DACs are also offered with a serial SPI interface.

The devices are part of TI's new pin-compatible family of low-voltage,
single-supply, ultra-low glitch DACs with a precision internal reference. Each
device operates over an extended temperature range of -40C to 105C and a wide
power supply range of 2.7V to 5.5V.