Product Details
●The AD557 DACPORT® is a complete voltage-output 8-bit digital-to-analog converter, including output amplifier, full microprocessor interface and precision voltage reference on a single monolithic chip. No external components or trims are required to interface, with full accuracy, an 8-bit data bus to an analog system.
●The low cost and versatility of the AD557 DACPORT are the result of continued development in monolithic bipolar technologies.
●The complete microprocessor interface and control logic is implemented with integrated injection logic (I2 L), an extremely dense and low-power logic structure that is process-compatible with linear bipolar fabrication. The internal precision voltage reference is the patented low-voltage band-gap circuit which permits full-accuracy performance on a single +5 V power supply. Thin-film silicon-chromium resistors provide the stability required for guaranteed monotonic operation over the entire operating temperature range, while laser-wafer trimming of these thin-film resistors permits absolute calibration at the factory to within ±2.5 LSB; thus, no user-trims for gain or offset are required. A new circuit design provides voltage settling to ±1/2 LSB for a full-scale step in 800 ns.
●The AD557 is available in two package configurations. The AD557JN is packaged in a 16-pin plastic, 0.3"-wide DIP. For surface mount applications, the AD557JP is packaged in a 20-pin JEDEC standard PLCC. Both versions are specified over the operating temperature range of 0°C to +70°C.
●DACPORT is a registered trademark of Analog Devices, Inc.
●### Features and Benefits
● Complete 8-bit DC
● Voltage Output - 0 V to 2.56 V
● Internal Precision Band-Gap Reference
● Single-Supply Operation: 5 V (±10%)
● Full Microprocessor Interface
● Fast: 1 xxs Voltage Settling to ±1/2 LSB
● Low power: 75 mW
● No User Trims Required
● Guaranteed Montonic
●Over Temperature
● All Errors Specified T min to T max
● Small 16-Lead DIP or 20-Lead PLCC Package
● Low Cost
