DAC7801KP Equivalent & Substitute Parts

Part Overview

The DAC7801KP is a 12-bit digital-to-analog converter manufactured by Texas Instruments, featuring dual D/A conversion channels with current output and external reference capability. This component is classified as obsolete, necessitating identification of active alternative parts for new designs and production continuity. The DAC7801KP operates with 5V analog and digital supply voltages and is packaged in a 24-pin DIP configuration suitable for through-hole mounting applications.

Substiute Parts

DAC7801KP

Texas InstrumentsIn Stock: 1532DAC7801KP Datasheet

Current PartRFQ

DAC7801KU

Burr BrownIn Stock: 2329DAC7801KU Datasheet

MFR RecommendedRFQ

DAC7822IRTAT

Texas InstrumentsIn Stock: 1402DAC7822IRTAT Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC7801KP is determined by the following critical parameters: 12-bit resolution, dual D/A converter configuration, parallel data interface, external reference capability, and current output type. Substitute parts must maintain these core functional specifications.

Two substitute parts are identified based on electrical parameter compatibility:

DAC7801KU maintains identical electrical specifications (12-bit, dual converters, 800ns settling time, 5V supply, ±1 LSB accuracy, multiplying DAC architecture, -40°C to 85°C operating range) with the primary difference being package format (24-SOIC surface mount versus 24-DIP through hole) and mounting technology.

DAC7822IRTAT provides functional equivalence through matching 12-bit resolution, dual converter configuration, parallel interface, external reference, and current output. This part introduces enhanced specifications including faster 200ns settling time, wider supply voltage range (2.5V to 5.5V), differential output capability, extended operating temperature range (-40°C to 125°C), and R-2R architecture. The DAC7822IRTAT uses 40-WQFN surface mount packaging.

Parameter Comparison

Engineering Selection Recommendations

DAC7801KU is the direct electrical equivalent for applications requiring identical performance specifications and operating conditions. This substitute maintains the same 12-bit resolution, dual-channel configuration, 800ns settling time, and 5V supply requirements as the DAC7801KP. Selection of DAC7801KU requires PCB redesign to accommodate 24-SOIC surface mount packaging in place of 24-DIP through-hole mounting. Both parts are ROHS3 compliant and suitable for equivalent operating temperature ranges. DAC7801KU is currently in active production status.

DAC7822IRTAT provides enhanced performance characteristics including 4x faster settling time (200ns), wider supply voltage range (2.5V to 5.5V), extended operating temperature range (-40°C to 125°C), and differential output capability. This part requires significant PCB redesign due to 40-pin WQFN packaging format. DAC7822IRTAT is appropriate for new designs where improved performance specifications and extended environmental operating range provide system benefits. This part is ROHS3 compliant and in active production status.

Frequently Asked Questions (FAQ)

Q: Can DAC7801KU be used as a direct pin-for-pin replacement for DAC7801KP?

A: No. While DAC7801KU maintains identical electrical specifications, the package formats differ (24-SOIC versus 24-DIP). PCB redesign is required to accommodate the surface mount package. Pin functionality and signal assignments are equivalent.

Q: What are the key differences between DAC7801KU and DAC7822IRTAT?

A: DAC7801KU provides electrical equivalence with identical settling time (800ns) and supply voltage (5V). DAC7822IRTAT offers enhanced performance with 200ns settling time, wider supply range (2.5V to 5.5V), extended temperature range (-40°C to 125°C), and differential output capability. Both maintain 12-bit resolution and dual-channel configuration. Package formats differ significantly (24-SOIC versus 40-WQFN).

Q: Is the DAC7801KP still available for purchase?

A: DAC7801KP is classified as obsolete. Active substitute parts (DAC7801KU and DAC7822IRTAT) are available in current production.

Q: Which substitute part requires the least PCB modification?

A: DAC7801KU requires package format conversion from through-hole to surface mount but maintains identical electrical specifications and pin count. DAC7822IRTAT requires conversion to a 40-pin WQFN package, necessitating more extensive PCB redesign.

Q: Are both substitute parts RoHS compliant?

A: DAC7801KU compliance status is not specified in available documentation. DAC7822IRTAT is ROHS3 compliant. Verify RoHS compliance requirements with component suppliers for DAC7801KU.

Q: Can DAC7822IRTAT operate at 5V supply like the original DAC7801KP?

A: Yes. DAC7822IRTAT operates across a 2.5V to 5.5V supply range, which includes the 5V operating point of DAC7801KP. The wider supply range provides additional design flexibility.