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DAC8248

Features: Two Matched 12-Bit DACs on One Chip12-Bit Resolution with an 8-Bit Data BusDirect Interface with 8-Bit MicroprocessorsDouble-Buffered Digital InputsRESET to Zero Pin12-Bit Endpoint Linearity (61/2 LSB) Over Temperature15 V to 115 V Single Supply OperationLatch-Up ResistantImproved ESD Re...

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SeekIC No. : 004323807 Detail

DAC8248: Features: Two Matched 12-Bit DACs on One Chip12-Bit Resolution with an 8-Bit Data BusDirect Interface with 8-Bit MicroprocessorsDouble-Buffered Digital InputsRESET to Zero Pin12-Bit Endpoint Lineari...

DAC8248 Data Sheet

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Part Number:
DAC8248
Supply Ability:
5000

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  • Qty
  • 1~5000
  • Unit Price
  • Negotiable
  • Processing time
  • 15 Days
Total Cost: $ 0.00

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Product Details

Description



Features:

Two Matched 12-Bit DACs on One Chip
12-Bit Resolution with an 8-Bit Data Bus
Direct Interface with 8-Bit Microprocessors
Double-Buffered Digital Inputs
RESET to Zero Pin
12-Bit Endpoint Linearity (61/2 LSB) Over Temperature
15 V to 115 V Single Supply Operation
Latch-Up Resistant
Improved ESD Resistance
Packaged in a Narrow 0.3" 24-Pin DIP and 0.3" 24-Pin
SOL Package
Available in Die Form


Application

Multichannel Microprocessor-Controlled Systems
Robotics/Process Control/Automation
Automatic Test Equipment
Programmable Attenuator, Power Supplies, Window Comparators
Instrumentation Equipment
Battery Operated Equipment


Pinout

Connection Diagram


Specifications

VDD to AGND . . . . . . . . . . . . . . . . . . . . . . . .. . . . . 0 V, +17 V
VDD to DGND . . . . . . . . . . . . . . . . . . . . .. . . . . . . . 0 V, +17 V
AGND to DGND . . . . . . . . . . . . . . . . . ...... 0.3 V, VDD +0.3 V
Digital Input Voltage to DGND . . . . . . ..... 0.3 V, VDD +0.3 V
IOUTA, IOUTB to AGND . . . . . . . . . . . . ... . 0.3 V, VDD +0.3 V
VREFA, VREFB to AGND . . . . . . . . . . . . . . . .... . . . . . . . . ±25 V
VRFBA, VRFBB to AGND . . . . . . . . . . . . . . . . . ... . . . . . . ±25 V
Operating Temperature Range
  AW Version . . . . . . . . . . . . . . . . . . . . . . . 55°C to +125°C
  EW, FW, FP Versions . . . . . . . . . . . . . . . ... 40°C to +85°C
  GP, HP, HS Versions . . . . . . . . . . . . . . . . .. . . 0°C to +70°C
Junction Temperature . . . . . . . . . . . . . . . . . . . . . . . . +150°C
Storage Temperature . . . . . . . . . . . . . . . .  65°C to +150°C
Lead Temperature (Soldering, 60 sec) . . . . . . . . .. . . +300°C


Description

The DAC8248 is a dual 12-bit, double-buffered, CMOS digitalto- 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 designs with a 12-bit or 16-bit wide data path, choose the DAC8222 or DAC8221.

The DAC8248'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 DAC8248's monolithic construction offers excellent DACto- 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




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