ADS8515IBDBRG4 Equivalent & Substitute Parts

Part Overview

The ADS8515IBDBRG4 is a 16-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, featuring a single-ended input with SAR (Successive Approximation Register) architecture in a 28-SSOP surface mount package. This device is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The part operates across industrial temperature ranges (-40°C to 85°C) with configurable internal or external voltage references, supporting 250k samples per second conversion rates.

Substiute Parts

ADS8515IBDBRG4

Texas InstrumentsIn Stock: 970ADS8515IBDBRG4 Datasheet

Current PartRFQ

AD976AARSZ

Analog Devices Inc.In Stock: 2354AD976AARSZ Datasheet

MFR RecommendedRFQ

AD976ABRSZ

Analog Devices Inc.In Stock: 1365AD976ABRSZ Datasheet

MFR RecommendedRFQ

AD976BRSZ

Analog Devices Inc.In Stock: 1550AD976BRSZ Datasheet

MFR RecommendedRFQ

LTC1606ACG#PBF

Analog Devices Inc.In Stock: 898LTC1606ACG#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS8515IBDBRG4 are qualified based on the following critical parameters that determine functional compatibility:

Core Compatibility Criteria:

• Resolution: 16-bit ADC architecture
• Input Configuration: Single-ended input, 1 channel
• Data Interface: Parallel output
• Conversion Architecture: SAR (Successive Approximation Register)
• Reference Options: External and internal reference support
• Analog Supply Voltage: 5V
• Package Type: 28-SSOP surface mount
• Operating Temperature Range: -40°C to 85°C minimum

Allowable Variations:

• Sampling rate may differ (100k, 200k, or 250k samples per second)
• Digital supply voltage range may vary within 5V nominal operation
• Moisture Sensitivity Level (MSL) may differ
• Product status may transition from discontinued to active

The substitute parts AD976AARSZ, AD976ABRSZ, AD976BRSZ, and LTC1606ACG#PBF meet these core criteria while maintaining functional equivalence in circuit applications.

Parameter Comparison

Engineering Selection Recommendations

Primary Substitutes (Highest Compatibility):

AD976AARSZ and AD976ABRSZ are functionally equivalent to the ADS8515IBDBRG4 with identical 16-bit resolution, single-ended input configuration, and SAR architecture. Both devices maintain the full industrial temperature range (-40°C to 85°C) and are currently in active production status with ROHS3 compliance. The sampling rate of 200k samples per second is suitable for applications not requiring the maximum 250k rate of the original part.

Secondary Substitute (Lower Sampling Rate):

AD976BRSZ operates at 100k samples per second, making it suitable for applications with reduced bandwidth requirements. This device maintains all other core specifications and active product status.

Alternative Substitute (Temperature-Limited):

LTC1606ACG#PBF matches the 250k sampling rate of the ADS8515IBDBRG4 and maintains full SAR ADC functionality with parallel interface. However, this device operates within a restricted temperature range (0°C to 70°C), limiting its use to commercial temperature applications. Selection of this part requires confirmation that the application does not require the extended industrial temperature range of the original specification.

All substitute parts carry ROHS3 compliance and maintain the 28-SSOP surface mount package, ensuring direct PCB compatibility without layout modifications.

Frequently Asked Questions (FAQ)

Q: Can AD976AARSZ directly replace ADS8515IBDBRG4 in existing designs?

A: Yes. Both devices share identical 16-bit resolution, single-ended input, SAR architecture, parallel data interface, and 28-SSOP package. The AD976AARSZ operates at 200k samples per second versus the original 250k rate. Verify that your application does not require the maximum sampling frequency before substitution.

Q: What is the key difference between AD976AARSZ, AD976ABRSZ, and AD976BRSZ?

A: All three are Analog Devices AD976 variants with identical resolution and architecture. The primary difference is sampling rate: AD976AARSZ and AD976ABRSZ operate at 200k samples per second, while AD976BRSZ operates at 100k samples per second. Select based on your application's bandwidth requirements.

Q: Why is LTC1606ACG#PBF listed as a substitute if it has a different temperature range?

A: LTC1606ACG#PBF maintains all core ADC specifications (16-bit, SAR, single-ended, parallel interface, 28-SSOP package) and matches the 250k sampling rate of the original part. However, its operating temperature range is restricted to 0°C to 70°C. This part is suitable only for commercial temperature applications that do not require the -40°C to 85°C industrial range.

Q: Are all substitute parts in the same 28-SSOP package?

A: Yes. All substitute parts use the 28-SSOP (0.209", 5.30mm Width) surface mount package, ensuring direct PCB compatibility without layout changes or rework.

Q: Do all substitute parts support both internal and external voltage references?

A: Yes. All substitute parts (AD976AARSZ, AD976ABRSZ, AD976BRSZ, and LTC1606ACG#PBF) support both external and internal reference configurations, matching the original ADS8515IBDBRG4 functionality.

Q: What is the impact of using a substitute with lower sampling rate?

A: Lower sampling rates reduce the maximum frequency content that can be accurately captured. AD976BRSZ at 100k samples per second is suitable for DC and low-frequency measurements. AD976AARSZ and AD976ABRSZ at 200k samples per second support higher bandwidth applications. Confirm your application's Nyquist frequency requirements before selecting a lower-rate substitute.

Q: Are all substitute parts ROHS3 compliant?

A: Yes. All substitute parts carry ROHS3 compliance certification, matching the environmental compliance status of the original ADS8515IBDBRG4.