DAC811AH Equivalent & Substitute Parts

Part Overview

The DAC811AH is a 12-bit digital-to-analog converter manufactured by Texas Instruments, housed in a 28-CDIP through-hole package. This component features voltage-buffered output, internal reference, and parallel data interface, designed for applications requiring precision analog signal generation from digital inputs. The DAC811AH is classified as obsolete, making equivalent and substitute parts necessary for ongoing system support and new design implementations.

Substiute Parts

DAC811AH

Texas InstrumentsIn Stock: 2408DAC811AH Datasheet

Current PartRFQ

DAC811JU

Texas InstrumentsIn Stock: 2617DAC811JU Datasheet

MFR RecommendedRFQ

DAC811BH

Burr BrownIn Stock: 1397DAC811BH Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution for the DAC811AH is determined by strict equivalence across the following critical parameters: 12-bit resolution, single D/A converter configuration, voltage-buffered output, parallel data interface, internal reference, R-2R architecture, and matching supply voltage specifications (±11.4V ~ 16.5V analog, 5V digital). The settling time of 4µs and INL/DNL specifications define the performance envelope for acceptable substitutes.

Two substitute parts meet these criteria:

DAC811JU - Functionally equivalent across all core electrical parameters. Differs in package format (28-SOIC surface mount versus 28-CDIP through hole) and operating temperature range (0°C ~ 70°C versus -25°C ~ 85°C). Suitable for applications where surface-mount technology is acceptable and extended low-temperature operation is not required.

DAC811BH - Functionally equivalent across all core electrical parameters. Maintains identical package format (28-CDIP through hole) and operating temperature range (-25°C ~ 85°C). Offers improved INL/DNL specifications (±0.125, ±0.25 LSB versus ±0.25, ±0.5 LSB).

Parameter Comparison

Engineering Selection Recommendations

For through-hole PCB designs with extended temperature requirements: DAC811BH is the primary substitute. It maintains the 28-CDIP package format and -25°C ~ 85°C operating temperature range of the original DAC811AH. The improved INL/DNL specifications (±0.125, ±0.25 LSB) provide enhanced accuracy over the original part. Both the original and substitute are ROHS3 compliant and REACH unaffected.

For surface-mount PCB designs with standard temperature requirements: DAC811JU is the appropriate substitute. It provides full electrical equivalence with the DAC811AH across all core parameters while utilizing 28-SOIC surface-mount packaging. The operating temperature range of 0°C ~ 70°C is suitable for commercial and industrial applications not requiring extended low-temperature operation. This part is also ROHS3 compliant and REACH unaffected.

For applications requiring extended low-temperature operation below 0°C: DAC811BH is the only suitable substitute, as DAC811JU is limited to 0°C minimum operating temperature.

Frequently Asked Questions (FAQ)

Q: Can DAC811JU replace DAC811AH in existing through-hole PCB designs?

A: No. DAC811JU uses 28-SOIC surface-mount packaging, which is incompatible with through-hole PCB layouts designed for 28-CDIP components. PCB redesign would be required.

Q: What is the primary difference between DAC811BH and DAC811AH?

A: Both parts are functionally equivalent with identical package format and operating temperature range. DAC811BH offers superior INL/DNL accuracy (±0.125, ±0.25 LSB versus ±0.25, ±0.5 LSB). DAC811BH is manufactured by Burr Brown, while DAC811AH is manufactured by Texas Instruments.

Q: Is DAC811JU suitable for applications operating below 0°C?

A: No. DAC811JU has a minimum operating temperature of 0°C. For applications requiring operation below 0°C, use DAC811BH, which operates from -25°C ~ 85°C.

Q: Are all three parts RoHS compliant?

A: Yes. DAC811AH, DAC811JU, and DAC811BH are all ROHS3 compliant and REACH unaffected.

Q: Can I use DAC811BH as a direct replacement for DAC811AH?

A: Yes. DAC811BH is a direct replacement for DAC811AH in through-hole applications. Both use 28-CDIP packaging, support identical supply voltages, and operate across the same temperature range. No PCB modifications are required.