The AD5544/AD5554 quad, 16-/14-bit, current output, digital-to-analog converters (DACs) are designed to operate from 2.7 V to 5.5 V supply range.The applied external reference input voltage (VREFX) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.A double-buffered serial data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data in (SDI), a chip select (CS), and clock (CLK) signals. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common, level-sensitive, load DAC strobe (LDAC) input allows the simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to 0 at system turn-on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.The AD5544 is packaged in the compact 28-lead SSOP and 32-lead LFCSP.  The AD5554 is  packaged in the compact 28-lead SSOP.Applications Automatic test equipment Instrumentation Digitally controlled calibration

The AD5544 / AD5554 quad, 16-/14-bit, current output, digital-to-analog converters (DACs) are designed to operate from 2.7 V to 5.5 V supply range.The applied external reference input voltage (VREFx) determines the full-scale output current. Integrated feedback resistors (RFB) provide temperature-tracking, full-scale voltage outputs when combined with an external I-to-V precision amplifier.A double-buffered serial data interface offers high speed, 3-wire, SPI- and microcontroller-compatible inputs using serial data in (SDI), a chip select (CS), and clock (CLK) signals. In addition, a serial data out pin (SDO) allows for daisy-chaining when multiple packages are used. A common, level-sensitive, load DAC strobe (LDAC) input allows the simultaneous update of all DAC outputs from previously loaded input registers. Additionally, an internal power-on reset forces the output voltage to 0 at system turn-on. An MSB pin allows system reset assertion (RS) to force all registers to zero code when MSB = 0, or to half-scale code when MSB = 1.The AD5544 is packaged in the compact 28-lead SSOP and 32-lead LFCSP. The AD5554 is packaged in the compact 28-lead SSOPAPPLICATIONS Automatic test equipment Instrumentation Digitally controlled calibration

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Analog Comparators Ultra Fast ECL Single Comparator

The AD96685 and AD96687 are ultrafast voltage comparators. The AD96685 is a single comparator with a propagation delay of 2.5 ns, while the AD96687 is an equally fast dual comparator. Both devices exhibit a propagation delay dispersion of 50 ps, a crucial characteristic for high-speed comparators, indicating the difference in propagation delay under varying overdrive conditions.

Featuring a fast, high-precision differential input stage, these comparators maintain consistent propagation delay across a broad range of signals within the common-mode range from -2.5 V to +5 V. The outputs consist of complementary digital signals fully compatible with ECL 10 K and 10 KH logic families. These outputs provide ample drive current to directly interface with transmission lines terminated in 50 Ohms to -2 V. The inclusion of a level-sensitive latch input allows for tracking, track-hold, or sample-hold modes of operation.

Both the AD96685 and AD96687 are available in industrial temperature ranges (-25°C to +85°C) and military temperature ranges. Industrial range devices are offered in 16-pin DIP, SOIC, and 20-lead PLCC packages. Additionally, the AD96685 is available in a 10-pin TO-100 metal can.

Features and Benefits:

• Fast: 2.5 ns Propagation Delay
• Low Power: 118 mW per Comparator
• Packages: DIP, SOIC, PLCC
• Power Supplies: +5 V, –5.2 V
• Logic Compatibility: ECL
• 50 ps Delay Dispersion

Applications:

• High Speed Triggers
• High Speed Line Receivers
• Threshold Detectors
• Window Comparators
• Peak Detectors