DAC725KP Equivalent & Substitute Parts

Part Overview

The DAC725KP is a 16-bit Digital to Analog Converter manufactured by Texas Instruments, designed for data acquisition applications requiring dual voltage-output conversion with parallel and SPI interface support. The device operates with ±11.4V to 16.5V analog supply and 5V digital supply, featuring an 8µs settling time and internal reference configuration.

The DAC725KP is classified as obsolete. Identifying equivalent and substitute parts is necessary to maintain system functionality, ensure design continuity, and support long-term product availability for legacy applications or new designs requiring comparable performance characteristics.

Substiute Parts

DAC725KP

Texas InstrumentsIn Stock: 2518DAC725KP Datasheet

Current PartRFQ

DAC7741YC/250

Texas InstrumentsIn Stock: 1527DAC7741YC/250 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the DAC725KP is based on the following critical parameters that define functional equivalence:

Core Electrical Specifications:

• Resolution: 16-bit conversion capability
• Output Configuration: Voltage-buffered output
• Supply Voltage Compatibility: Analog and digital supply ranges
• Settling Time: Performance metric for conversion speed
• Data Interface: Parallel and/or SPI protocol support
• Reference Configuration: Internal or external reference capability

Physical and Environmental Constraints:

• Operating Temperature Range: Functional temperature limits
• Package Type: Form factor and mounting compatibility
• RoHS and Compliance Status: Regulatory alignment

The DAC7741YC/250 qualifies as a manufacturer-recommended substitute based on matching 16-bit resolution, voltage-buffered output, 5V digital supply, and equivalent RoHS3 compliance. However, differences in converter count, settling time, package type, and operating temperature range must be evaluated against specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

DAC7741YC/250 Substitution Considerations:

The DAC7741YC/250 is an active product with extended operating temperature range (-40°C to 85°C versus 0°C to 70°C) and improved settling time (5µs versus 8µs). Both devices maintain ROHS3 compliance and equivalent digital supply specifications.

Substitution is appropriate when:

• Single D/A converter functionality meets application requirements (DAC725KP provides dual converters)
• Surface mount assembly capability is available (DAC7741YC/250 uses 48-LQFP versus 28-DIP through-hole)
• Parallel interface alone is sufficient (DAC7741YC/250 does not support SPI)
• Extended temperature operation or faster settling time provides system benefit

Substitution requires design modification when:

• Dual simultaneous D/A conversion is required
• Through-hole mounting is mandatory
• SPI interface is required for system communication
• Analog supply voltage exceeds ±15.75V

Both devices are manufactured by Texas Instruments and maintain equivalent regulatory compliance status.

Frequently Asked Questions (FAQ)

Q: Can the DAC7741YC/250 directly replace the DAC725KP in existing designs?

A: Direct replacement requires evaluation of three factors: (1) PCB layout compatibility—the DAC7741YC/250 uses surface mount 48-LQFP packaging versus through-hole 28-DIP; (2) functional requirements—the DAC725KP provides two D/A converters while the DAC7741YC/250 provides one; (3) interface requirements—the DAC725KP supports both parallel and SPI protocols while the DAC7741YC/250 supports parallel only.

Q: What are the key electrical differences between these devices?

A: Both devices provide 16-bit voltage-buffered output with 5V digital supply. The DAC7741YC/250 offers faster settling time (5µs versus 8µs) and extended operating temperature range (-40°C to 85°C versus 0°C to 70°C). Analog supply voltage ranges differ slightly: DAC725KP operates at ±11.4V to 16.5V while DAC7741YC/250 operates at ±11.4V to 15.75V or -4.75V to -15.75V.

Q: Are both devices RoHS compliant?

A: Yes. Both the DAC725KP and DAC7741YC/250 are ROHS3 compliant and REACH unaffected, meeting equivalent regulatory requirements for electronic component manufacturing and use.

Q: What is the impact of the different number of D/A converters?

A: The DAC725KP integrates two independent 16-bit D/A converters, enabling simultaneous dual-channel analog output conversion. The DAC7741YC/250 provides a single 16-bit converter. Applications requiring dual-channel conversion require either two DAC7741YC/250 devices or an alternative dual-converter solution.

Q: Does the DAC7741YC/250 support SPI interface?

A: No. The DAC7741YC/250 supports parallel data interface only. The DAC725KP supports both parallel and SPI protocols. Applications dependent on SPI communication require either the original DAC725KP or identification of an alternative SPI-compatible 16-bit DAC.