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AD7248A:  12-Bit DACPORT with Double-Buffered Byte Loading

Product Details


The AD7245A/AD7248A is an enhanced version of the industry standard AD7245/AD7248. Improvements include operation from 12 V to 15 V supplies, a ±1/2 LSB linearity grade, faster interface times and better full scale and reference variations with VDD. Additional features include extended temperature range operation for commercial and industrial grades.

The AD7245A/AD7248A is a complete, 12-bit, voltage output, digital-to-analog converter with output amplifier and Zener voltage reference on a monolithic CMOS chip. No external user trims are required to achieve full specified performance.

Both parts are microprocessor compatible, with high speed data latches and double-buffered interface logic. The AD7245A accepts 12-bit parallel data which is loaded into the input latch on the rising edge of CS or WR. The AD7248A has an 8-bit wide data bus with data loaded to the input latch in two write operations. For both parts, an asynchronous LDAC signal transfers data from the input latch to the DAC latch and updates the analog output. The AD7245A also has a CLR signal on the DAC latch which allows features such as power-on reset to be implemented.

The on-chip 5 V buried Zener diode provides a low noise, temperature compensated reference for the DAC. For single supply operation, two output ranges of 0 V to +5 V and 0 V to +10 V are available, while these two ranges plus an additional ±5 V range are available with dual supplies. The output amplifiers are capable of developing +10 V across a 2 kOhm load to GND.

The AD7245A/AD7248A is fabricated in linear compatible CMOS (LC2MOS), an advanced, mixed technology process that combines precision bipolar circuits with low power CMOS logic. The AD7245A is available in a small, 0.3" wide, 24-pin DIP and SOIC and in 28-terminal surface mount packages. The AD7248A is packaged in a small, 0.3" wide, 20-pin DIP SOIC and in 20-terminal surface mount packages.

Functional Block Diagram for AD7248A

AD7248A Diagram
Functional Block Diagram for AD7248A

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Price, packaging, availability

AD7248A Model Options
Model Package Pins Temp.
Range
Packing,
Qty
Price*(100-499) Price*1000 pcs RoHS View PCN/ PDN Check Inventory/
Purchase/Sample
5962-8876602RA Status: Last Time Buy CERDIP GLASS SEAL 20 Comm. Tube, 18 $89.40 $77.78 N  Material Info PDN Purchase
AD7248AACHIPS Status: Last Time Buy CHIPS OR DIE 0 Comm. Tray, 49 $8.22 $8.22 Y  Material Info PDN Purchase
AD7248AAN Status: Production 20 ld PDIP 20 Ind Tube, 18 $12.24 $10.87 N  Material Info PCN Purchase
AD7248AANZ Status: Production 20 ld PDIP 20 Ind Tube, 18 $10.62 $9.43 Y  Material Info PCN Purchase
AD7248AAP Status: Production 20 ld PLCC 20 Ind Tube, 49 $15.14 $12.87 N  Material Info PCN Purchase
AD7248AAPZ Status: Production 20 ld PLCC 20 Ind Tube, 49 $13.14 $11.17 Y  Material Info PCN Purchase
AD7248AAPZ-REEL Status: Production 20 ld PLCC 20 Ind Reel, 1000 - $11.17 Y  Material Info PCN Purchase
AD7248AAR Status: Production 20 ld SOIC - Wide 20 Ind Tube, 37 $11.89 $10.54 N  Material Info PCN Purchase
AD7248AARZ Status: Production 20 ld SOIC - Wide 20 Comm. Tube, 37 $10.31 $9.15 Y  Material Info PCN Purchase
AD7248AARZ-REEL Status: Production 20 ld SOIC - Wide 20 Comm. Reel, 1000 - $9.61 Y  Material Info PCN Purchase
AD7248ABCHIPS Status: Last Time Buy CHIPS OR DIE 0 Comm. Tray, 49 $12.10 $12.10 Y  Material Info PDN Purchase
AD7248ABNZ Status: Production 20 ld PDIP 20 Ind Tube, 18 $14.46 $12.96 Y  Material Info PCN Purchase
AD7248ABRZ Status: Production 20 ld SOIC - Wide 20 Comm. Tube, 37 $14.04 $12.58 Y  Material Info PCN Purchase
AD7248ABRZ-REEL Status: Production 20 ld SOIC - Wide 20 Comm. Reel, 1000 - $11.98 Y  Material Info PCN Purchase
AD7248AQ Status: Production 20 ld CerDIP 20 Ind Tube, 18 $17.69 $17.69 N  Material Info PCN Purchase
AD7248ATQ Status: Production 20 ld CerDIP 20 Comm. Tube, 18 $42.68 $36.30 N  Material Info PCN Purchase
AD7248JNZ Status: Production 20 ld PDIP 20 Comm. Tube, 18 $11.75 $10.02 Y  Material Info PCN Purchase
AD7248JP-REEL Status: Last Time Buy 20 ld PLCC 20 Comm. Reel, 1000 $14.42 $12.26 N  Material Info PCN/PDN Purchase
AD7248JPZ Status: Production 20 ld PLCC 20 Comm. Tube, 49 $13.80 $11.73 Y  Material Info PCN Purchase
AD7248SE Status: Contact ADI LCC:CER LEADLESS CHIP CARR 20 Mil Tube, 54 $88.54 $75.29 N  Material Info PDN Contact ADI
AD7248SQ Status: Obsolete 20 ld CerDIP 20 Mil Tube, 20 - - N  Material Info Notify Me Contact ADI
Price Table Help

The USA list pricing shown is for BUDGETARY USE ONLY, shown in United States dollars (FOB USA per unit for the stated volume), and is subject to change. International prices may differ due to local duties, taxes, fees and exchange rates. For volume-specific price or delivery quotes, please contact your local Analog Devices, Inc. sales office or authorized distributor. Pricing displayed for Evaluation Boards and Kits is based on 1-piece pricing.


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