ADS8505IBDBR Equivalent & Substitute Parts

Part Overview

The ADS8505IBDBR is a 16-bit Successive Approximation Register (SAR) analog-to-digital converter manufactured by Texas Instruments, designed for single-ended input data acquisition applications. This component operates at a 250 kSPS sampling rate with parallel data interface output and supports both external and internal voltage references. The part is currently in active production status with 3200 units in stock inventory.

Equivalent and substitute parts are identified when design requirements permit operation at alternative sampling rates, when primary part availability is constrained, or when sourcing from alternative manufacturers is necessary while maintaining functional compatibility within the specified electrical and mechanical parameters.

Substiute Parts

ADS8505IBDBR

Texas InstrumentsIn Stock: 3284ADS8505IBDBR Datasheet

Current PartRFQ

AD976AARSZ

Analog Devices Inc.In Stock: 2354AD976AARSZ 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 ADS8505IBDBR are qualified based on the following criteria:

Mandatory Compatibility Parameters:

• 16-bit resolution
• Single-ended input configuration
• Parallel data interface
• 5V analog and digital supply voltages
• 28-SSOP package with 0.209" width (5.30mm)
• Surface mount technology
• ROHS3 compliance

Variable Parameters Permitting Substitution:

• Sampling rate (250 kSPS, 200 kSPS, or 100 kSPS)
• Operating temperature range (-40°C to 85°C or 0°C to 70°C)
• Moisture sensitivity level (MSL 1, 2, or 3)
• Manufacturer (Texas Instruments or Analog Devices Inc.)

The three identified substitute parts meet all mandatory compatibility parameters while operating at reduced or equivalent sampling rates. Selection among substitutes depends on application sampling rate requirements and environmental operating conditions.

Parameter Comparison

Engineering Selection Recommendations

ADS8505IBDBR (Primary Part): Select when 250 kSPS sampling rate is required and extended temperature operation from -40°C to 85°C is specified. Texas Instruments sourcing preferred for established supply chain continuity.

AD976AARSZ (Substitute - Reduced Sampling Rate): Select when application sampling rate requirement is 200 kSPS or lower. Maintains full temperature range (-40°C to 85°C) and ROHS3 compliance. Suitable for applications where 20% sampling rate reduction is acceptable.

AD976BRSZ (Substitute - Lowest Sampling Rate): Select when application sampling rate requirement is 100 kSPS or lower. Maintains full temperature range (-40°C to 85°C) and ROHS3 compliance. Suitable for low-frequency signal acquisition where 60% sampling rate reduction from primary part is acceptable.

LTC1606ACG#PBF (Substitute - Equivalent Sampling Rate, Restricted Temperature): Select when 250 kSPS sampling rate is required and operating temperature range is limited to 0°C to 70°C. Provides equivalent sampling performance with superior moisture sensitivity (MSL 1 vs. MSL 2). Not suitable for applications requiring extended low-temperature operation below 0°C.

All substitute parts maintain ROHS3 compliance and REACH unaffected status, meeting regulatory requirements equivalent to the primary part.

Frequently Asked Questions (FAQ)

Q: Can AD976AARSZ replace ADS8505IBDBR in all applications?

A: AD976AARSZ is compatible when the application sampling rate requirement is 200 kSPS or lower. The 50 kSPS reduction from the primary part's 250 kSPS specification must be evaluated against signal bandwidth requirements. Both parts maintain identical temperature range (-40°C to 85°C), package type (28-SSOP), and supply voltages (5V analog and digital).

Q: What is the primary difference between AD976BRSZ and AD976AARSZ?

A: The primary difference is sampling rate. AD976BRSZ operates at 100 kSPS while AD976AARSZ operates at 200 kSPS. Both are Analog Devices Inc. products with identical temperature range, package, and supply specifications. Selection depends on whether the application can operate at 100 kSPS sampling rate.

Q: Is LTC1606ACG#PBF suitable for industrial temperature applications?

A: LTC1606ACG#PBF operates over 0°C to 70°C temperature range, which does not meet industrial extended temperature requirements of -40°C to 85°C. This part is suitable only for applications with operating temperature limits of 0°C to 70°C. For extended temperature operation, select ADS8505IBDBR, AD976AARSZ, or AD976BRSZ.

Q: Are all substitute parts pin-compatible with ADS8505IBDBR?

A: All substitute parts use identical 28-SSOP package with 0.209" width (5.30mm). Pin compatibility requires verification of pinout diagrams for each manufacturer's device, as package type alone does not guarantee identical pin assignments. Consult device datasheets for detailed pinout confirmation.

Q: What is the impact of MSL (Moisture Sensitivity Level) differences?

A: ADS8505IBDBR specifies MSL 2 (1 Year storage), while AD976AARSZ and AD976BRSZ specify MSL 3 (168 Hours storage). LTC1606ACG#PBF specifies MSL 1 (Unlimited storage). Lower MSL values require shorter storage times and more controlled humidity conditions. Selection should account for supply chain storage duration and environmental controls.

Q: Can these parts be used interchangeably in existing PCB designs?

A: Mechanical compatibility (28-SSOP package, surface mount) permits PCB layout reuse. Electrical compatibility requires confirmation that application sampling rate requirements are met by the substitute part's specified sampling rate. Functional verification is required before production implementation.