DAC7615P Equivalent & Substitute Parts

Part Overview

The DAC7615P is a 12-bit digital-to-analog converter featuring four independent D/A channels with voltage-buffered output, designed for data acquisition applications requiring external reference voltage configuration. The device is classified as obsolete, necessitating identification of functionally equivalent active alternatives to maintain design continuity and ensure long-term component availability for new production and legacy system support.

Substiute Parts

DAC7615P

Texas InstrumentsIn Stock: 2028DAC7615P Datasheet

Current PartRFQ

DAC7615E

Texas InstrumentsIn Stock: 5820DAC7615E Datasheet

MFR RecommendedRFQ

DAC8420FPZ

Analog Devices Inc.In Stock: 3666DAC8420FPZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the DAC7615P are qualified based on the following critical parameters that determine functional equivalence:

• 12-bit resolution with 4 independent D/A converters
• SPI digital interface for control and data input
• External voltage reference configuration
• Voltage-buffered output stage
• R-2R resistor ladder architecture
• Operating temperature range of -40°C to 85°C
• ROHS3 compliance and EAR99 export classification

Two substitute parts meet these criteria: the DAC7615E (Texas Instruments, surface-mount variant) and the DAC8420FPZ (Analog Devices Inc., through-hole package). Both maintain core functional specifications while offering different packaging and supply voltage options.

Parameter Comparison

Engineering Selection Recommendations

For through-hole PCB designs requiring direct pin-compatible replacement, the DAC8420FPZ from Analog Devices Inc. is the primary substitute. This part maintains the 16-DIP package format, identical pin count, and through-hole mounting characteristics of the DAC7615P. The DAC8420FPZ offers improved INL/DNL specifications (±1, ±0.25 LSB versus ±2, ±1 LSB) and extended analog supply voltage range (5V ~ 15V, -15V), providing greater design flexibility. Settling time increases marginally from 10µs to 13µs typical, which remains acceptable for most data acquisition applications.

For surface-mount PCB designs or new production layouts, the DAC7615E from Texas Instruments provides an active alternative with identical electrical specifications to the original DAC7615P. The 20-SSOP package reduces board footprint and enables automated assembly processes. The DAC7615E maintains the same 12-bit resolution, four-channel configuration, and ±5V analog supply requirements. Moisture sensitivity level increases to MSL 3 (168 hours), requiring controlled storage and handling procedures during manufacturing.

Both substitute parts maintain ROHS3 compliance, EAR99 export classification, and the -40°C to 85°C operating temperature range specified for the original device.

Frequently Asked Questions (FAQ)

Q: Can the DAC7615E be used as a direct replacement for the DAC7615P in existing through-hole designs?

A: No. The DAC7615E uses a 20-SSOP surface-mount package, while the DAC7615P uses a 16-DIP through-hole package. PCB layout and assembly process modifications are required. For through-hole designs, use the DAC8420FPZ instead.

Q: What are the key differences between the DAC8420FPZ and DAC7615P?

A: Both devices share identical 16-DIP through-hole packaging, 12-bit resolution, four-channel configuration, and SPI interface. The DAC8420FPZ offers improved linearity specifications (±1, ±0.25 LSB versus ±2, ±1 LSB), extended analog supply voltage range (5V ~ 15V, -15V versus ±5V), and slightly longer settling time (13µs typical versus 10µs). Moisture sensitivity level is MSL 1 (unlimited) for both parts.

Q: Are the pin assignments identical between DAC7615P and DAC8420FPZ?

A: Both devices use 16-DIP packaging with identical pin count and spacing (0.300", 7.62mm). Pin-level compatibility must be verified against the respective device datasheets to confirm functional equivalence for your specific application.

Q: What is the impact of the DAC7615E's MSL 3 rating compared to the DAC7615P's MSL 1?

A: MSL 3 (168 hours) requires stricter moisture control during storage and manufacturing. Components must be stored in dry conditions and used within 168 hours of package opening. MSL 1 (unlimited) allows indefinite storage without moisture precautions. This affects supply chain logistics and manufacturing procedures but does not impact electrical performance.

Q: Can the DAC8420FPZ operate with ±5V analog supply like the DAC7615P?

A: Yes. The DAC8420FPZ supports analog supply voltages from 5V ~ 15V and -15V, which includes the ±5V configuration used by the DAC7615P. Existing power supply designs require no modification.

Q: Which substitute part should be selected for new production designs?

A: For new through-hole designs, the DAC8420FPZ is recommended due to active product status and improved specifications. For new surface-mount designs, the DAC7615E provides identical electrical performance to the original device with reduced board footprint.