DAC8248FP

双12位8位字节双缓冲CMOS D / A转换器 Dual 12-Bit 8-Bit Byte Double-Buffered CMOS D/A Converter

Product Details

The DAC-8248 is a dual 12-bit, double-buffered, CMOS digital-to-analog converter. It has an 8-bit wide input data port that interfaces directly with 8-bit microprocessors. It loads a 12-bit word in two bytes using a single control; it can accept either a least significant byte or most significant byte first. For designers with a 12-bit or 16-bit wide data path, choose the DAC-8222 or DAC-8221.

The DAC-8248"s double-buffered digital inputs allow both DAC"s analog output to be updated simultaneously. This is particularly useful in multiple DAC systems where a common LDAC signal updates all DACs at the same time. A single RESET pin resets both outputs to zero.

The DAC-8248"s monolithic construction offers excellent DAC-to-DAC matching and tracking over the full operating temperature range. The DAC consists of two thin-film R-2R resistor ladder networks, two 12-bit, two 8-bit, and two 4-bit data registers, and control logic circuitry. Separate reference input and feedback resistors are provided for each DAC. The DAC8248 operates on a single supply from +5 V to +15 V, and it dissipates less than 0.5 mW at +5 V using zero or VDD logic levels. The device is packaged in a space-saving 0.3", 24-pin DIP.

The DAC-8248 is manufactured with PMI"s highly-stable thin-film resistors on an advanced oxide-isolated, silicon-gate, CMOS technology. PMI"s improved latch-up resistant design eliminates the need for external protective Schoottky diodes.

### Features and Benefits

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Two Matched 12-Bit DACs on One Chip

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12-Bit Resolution wth an 8-Bit Data Bus

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Direct Interface with 8-Bit Microprocessors

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Double-Buffered Digital Inputs

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RESET to Zero Pin

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12-Bit Endpoint Linearity ±1/2 LSB Over Temperature

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+5 V to 15 V Single Supply Operation

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Latch-Up Resistant

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Improved ESD Resistance

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Packaged in a Narrow 0.3" 24-Pin 

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DIP and 0.3" 24-Pin SOL Package

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Available in Die Form