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Product Detailed Parameters
- Description：IC DAC 12BIT V-OUT 24DIP
- Series：DACPORT®
- Mfr：Analog Devices Inc.
- Package：Tube,Tube
- Number of Bits：12
- Number of D/A Converters：1
- Settling Time：7µs
- Output Type：Voltage - Buffered
- Differential Output：No
- Data Interface：Parallel
- Reference Type：Internal
- Voltage - Supply, Analog：±10.8V ~ 16.5V
- Voltage - Supply, Digital：10.8V ~ 16.5V
- INL/DNL (LSB)：±1 (Max), ±1 (Max)
- Architecture：R-2R
- Operating Temperature：-40°C ~ 85°C
- Package / Case：24-DIP (0.300", 7.62mm)
- Supplier Device Package：24-PDIP
- Mounting Type：Through Hole
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Overview
The AD7245AAN is a monolithic 12-bit voltage-output digital-to-analog converter from Analog Devices, featuring an integrated output amplifier and a buried Zener voltage reference. It operates on single or dual supplies ranging from +10.8 V to +16.5 V for VDD and -10.8 V to -16.5 V for VSS. The device utilizes a parallel interface with double-buffered logic, accepting 12-bit data via DB0-DB11. Key performance metrics include a settling time of 7 µs (max) and relative accuracy grades of ±3/4 LSB (A version) or ±1/2 LSB (B version). It is housed in a 24-lead Plastic DIP package.
Feature Summary
- Integrated 5 V buried Zener reference and buffered output amplifier
- Parallel loading structure with asynchronous LDAC and CLR inputs
- Extended temperature range operation from –40 °C to +85 °C
- Low power consumption with typical IDD of 9 mA
Applications
- Microprocessor-controlled instrumentation systems
- Programmable gain amplifiers and filters
- Waveform generation circuits
- Calibration voltage sources
Procurement Notes
Verify the specific linearity grade suffix (N for ±3/4 LSB, P for ±1/2 LSB) against design requirements. Confirm package availability as the standard N-24 Plastic DIP may have limited stock compared to surface mount variants. Check RoHS compliance status for current manufacturing lots.
Selection Notes
Select the AD7245AAN for applications requiring a complete 12-bit DAC solution without external components. Ensure supply voltages remain within the +10.8 V to +16.5 V range for specified performance. Consider the AD7245ABN if tighter linearity specifications are required. Verify interface timing compatibility with the host microprocessor's write cycle.
Part Context
The AD7245AAN belongs to the AD7245A/AD7248A family, which are enhanced versions of the industry-standard AD7245/AD7248. This family offers improved interface speeds, extended temperature ranges, and better full-scale variation with supply voltage changes compared to previous generations.
Replacement Considerations
The AD7245ABN is a direct pin-compatible replacement with improved linearity (±1/2 LSB vs ±3/4 LSB). The AD7245AARZ offers the same electrical characteristics in a 24-SOIC surface-mount package.
