DAC7800KP Equivalent & Substitute Parts

Part Overview

The DAC7800KP is a 12-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring dual D/A conversion channels with current output. The device operates with 5V analog and digital supply voltages and features an 800ns settling time suitable for moderate-speed conversion tasks.

The DAC7800KP is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain design continuity, ensure supply chain reliability, and support long-term product availability for applications currently utilizing this component.

Substiute Parts

DAC7800KP

Texas InstrumentsIn Stock: 1259DAC7800KP Datasheet

Current PartRFQ

DAC7800LP

Texas InstrumentsIn Stock: 1060DAC7800LP Datasheet

MFR RecommendedRFQ

DAC7800KU

Texas InstrumentsIn Stock: 3085DAC7800KU Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DAC7800KP are identified based on the following critical parameters that determine functional and physical compatibility:

Core Electrical Parameters (Must Match):

• Number of bits: 12
• Number of D/A converters: 2
• Settling time: 800ns
• Output type: Current - Unbuffered
• Data interface: SPI
• Reference type: External
• Supply voltages: 5V analog and digital
• Operating temperature range: -40°C ~ 85°C

Physical Compatibility Parameters:

• Package type and pin count (16-pin configuration)
• Mounting technology (through hole or surface mount variants)

Compliance Parameters:

• RoHS3 compliance
• REACH unaffected status

The DAC7800KP has two identified substitutes: DAC7800LP (through-hole DIP package, active status) and DAC7800KU (surface-mount SOIC package, active status). Both maintain the core 12-bit, dual-channel architecture and electrical specifications required for direct functional replacement.

Parameter Comparison

Engineering Selection Recommendations

DAC7800LP Selection Criteria: The DAC7800LP is the direct through-hole package equivalent of the DAC7800KP. Both devices use 16-DIP packaging and are suitable for applications requiring through-hole mounting. The DAC7800LP holds active product status, ensuring ongoing availability and support. The DAC7800LP features improved INL specification (±0.5 LSB maximum versus ±1 LSB) and uses R-2R architecture, providing enhanced linearity performance. Both devices maintain ROHS3 compliance and REACH unaffected status. Selection of DAC7800LP is appropriate for direct board-level replacement in existing through-hole designs.

DAC7800KU Selection Criteria: The DAC7800KU provides functional equivalence in a 16-SOIC surface-mount package. This variant is suitable for applications requiring surface-mount technology or space-constrained designs. The DAC7800KU maintains active product status and identical electrical specifications to the DAC7800KP (12-bit resolution, dual channels, 800ns settling time, SPI interface). Both devices use multiplying DAC architecture and maintain ROHS3 compliance and REACH unaffected status. Selection of DAC7800KU requires PCB redesign to accommodate surface-mount footprint and assembly process changes.

Frequently Asked Questions (FAQ)

Q: Can DAC7800LP be used as a direct replacement for DAC7800KP? A: Yes. Both devices share identical 16-DIP through-hole packaging, pin configuration, and core electrical specifications (12-bit, dual-channel, 800ns settling time, SPI interface, 5V supply). The DAC7800LP is the active-status equivalent and can be substituted without PCB modification.

Q: What is the primary difference between DAC7800LP and DAC7800KU? A: The primary difference is packaging and mounting technology. DAC7800LP uses 16-DIP through-hole packaging, while DAC7800KU uses 16-SOIC surface-mount packaging. Both maintain identical electrical performance specifications and active product status.

Q: Does DAC7800KU require PCB redesign? A: Yes. The DAC7800KU surface-mount SOIC package requires a different PCB footprint than the through-hole DIP packages used by DAC7800KP and DAC7800LP. PCB layout and assembly process modifications are necessary.

Q: Are all three devices RoHS3 compliant? A: Yes. DAC7800KP, DAC7800LP, and DAC7800KU are all ROHS3 compliant and REACH unaffected.

Q: What is the difference in INL/DNL specifications between these devices? A: DAC7800LP specifies ±0.5 LSB maximum INL and ±1 LSB maximum DNL. DAC7800KP and DAC7800KU both specify ±1 LSB maximum for both INL and DNL. The DAC7800LP provides improved linearity performance.

Q: Can these devices be used interchangeably in new designs? A: Selection depends on packaging requirements. For through-hole designs, either DAC7800KP or DAC7800LP can be used; DAC7800LP is preferred due to active status. For surface-mount designs, DAC7800KU is the appropriate selection. All three maintain identical core functionality and compliance certifications.