DAC715PB 16-Bit Digital-to-Analog Converter Equivalent & Substitute Parts

Part Overview

The DAC715PB is a 16-bit digital-to-analog converter manufactured by Texas Instruments, designed for data acquisition applications requiring voltage output buffering. This component features an internal reference, parallel data interface, and R-2R architecture for precision analog conversion. The DAC715PB is classified as obsolete, making identification of compatible substitute parts essential for ongoing system support and new design implementations. Substitute parts must maintain electrical equivalence across resolution, settling time, output characteristics, and supply voltage specifications while accommodating different packaging and mounting technologies.

Key Parameters

Parameter	Specification
Resolution (Bits)	16
Number of D/A Converters	1
Settling Time	10µs
Output Type	Voltage - Buffered
Data Interface	Parallel
Reference Type	Internal
Analog Supply Voltage	±11.4V ~ 16.5V
INL/DNL (LSB)	±4 (Max)
Architecture	R-2R
Operating Temperature Range	-40°C ~ 85°C

Substitute Part Grouping Explanation

Substitution eligibility for the DAC715PB is determined by strict equivalence across the following critical parameters:

Resolution: 16-bit conversion capability
Converter Count: Single D/A converter per package
Settling Time: 10µs maximum
Output Configuration: Buffered voltage output
Interface Type: Parallel data input
Reference Architecture: Internal reference
Supply Voltage Compatibility: ±11.4V ~ 16.5V analog supply range
Accuracy Specification: ±4 LSB maximum INL/DNL
Conversion Architecture: R-2R resistor ladder topology
Temperature Range: -40°C to 85°C operation

The DAC715UB qualifies as a direct functional equivalent, maintaining all electrical specifications while differing only in package form factor and mounting technology. This substitution accommodates both through-hole and surface-mount design requirements within the same electrical performance envelope.

Parameter Comparison

Parameter	DAC715PB (Main Part)	DAC715UB (Substitute)	Match Status
Manufacturer	Texas Instruments	Burr Brown	Different Manufacturer
Resolution (Bits)	16	16	Equivalent
Number of D/A Converters	1	1	Equivalent
Settling Time	10µs	10µs	Equivalent
Output Type	Voltage - Buffered	Voltage - Buffered	Equivalent
Data Interface	Parallel	Parallel	Equivalent
Reference Type	Internal	Internal	Equivalent
Analog Supply Voltage	±11.4V ~ 16.5V	±11.4V ~ 16.5V	Equivalent
INL/DNL (LSB)	±4 (Max), ±4 (Max)	±4 (Max), ±4 (Max)	Equivalent
Architecture	R-2R	R-2R	Equivalent
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	Equivalent
Package / Case	28-DIP (0.300", 7.62mm)	28-SOIC (0.295", 7.50mm Width)	Different Package
Mounting Type	Through Hole	Surface Mount	Different Mounting
Product Status	Obsolete	Active	Substitute is Active

Engineering Selection Recommendations

The DAC715UB serves as the primary substitute for the obsolete DAC715PB based on complete electrical equivalence across all functional parameters. Both devices maintain identical 16-bit resolution, 10µs settling time, buffered voltage output, parallel interface, internal reference, and R-2R architecture specifications. Supply voltage ranges and accuracy specifications (±4 LSB INL/DNL) are fully matched.

The DAC715UB holds active product status, ensuring continued availability and manufacturing support, whereas the DAC715PB is classified as obsolete. Both components comply with ROHS3 and carry identical ECCN (EAR99) and HTSUS (8542.39.0001) classifications, confirming regulatory equivalence.

The primary design consideration is package and mounting technology: the DAC715PB uses 28-pin DIP through-hole packaging (0.300" pitch), while the DAC715UB employs 28-pin SOIC surface-mount packaging (0.295" width). PCB layout and assembly process compatibility must be evaluated based on existing design infrastructure. Both packages accommodate the same pin count and functional signal assignments, supporting direct functional replacement with appropriate board-level modifications.

Frequently Asked Questions (FAQ)

Q: Can the DAC715UB directly replace the DAC715PB in existing designs?

A: Electrical replacement is complete. The DAC715UB maintains all functional specifications including 16-bit resolution, 10µs settling time, buffered voltage output, parallel interface, internal reference, and R-2R architecture. However, physical replacement requires PCB redesign due to package differences: DAC715PB uses 28-DIP through-hole (0.300" pitch) while DAC715UB uses 28-SOIC surface-mount (0.295" width). Pin assignments are functionally equivalent.

Q: What are the key electrical parameters that define substitution eligibility?

A: Substitution is determined by equivalence in: 16-bit resolution, single D/A converter configuration, 10µs settling time, buffered voltage output type, parallel data interface, internal reference architecture, ±11.4V to ±16.5V analog supply voltage range, ±4 LSB maximum INL/DNL accuracy, R-2R conversion topology, and -40°C to 85°C operating temperature range.

Q: Why is the DAC715PB classified as obsolete?

A: The DAC715PB is listed as obsolete by Texas Instruments. The DAC715UB, manufactured by Burr Brown (now part of Texas Instruments), represents the active equivalent product line, ensuring continued manufacturing support and component availability.

Q: Are there compliance or regulatory differences between these parts?

A: Both components share identical regulatory classifications: ROHS3 compliance, EAR99 ECCN designation, and 8542.39.0001 HTSUS code. Regulatory equivalence is confirmed across all provided specifications.

Q: What inventory considerations apply to substitution?

A: The DAC715PB shows 961 pieces in new original stock. The DAC715UB shows 1200 pieces in new original stock with active product status, providing superior long-term availability assurance for ongoing production requirements.

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