ADS8505IBDBRG4 Equivalent & Substitute Parts

Part Overview

The ADS8505IBDBRG4 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 component is discontinued at DiGi Electronics, making equivalent substitute parts necessary for ongoing design requirements and production continuity. The part operates with 5V analog and digital supply voltages and supports both external and internal reference configurations.

Substiute Parts

ADS8505IBDBRG4

Texas InstrumentsIn Stock: 1006ADS8505IBDBRG4 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

Substitution eligibility for the ADS8505IBDBRG4 is determined by the following critical parameters:

Core Electrical Compatibility Requirements:

• Resolution: 16 bits (exact match required)
• Input Configuration: Single-ended, 1 input (exact match required)
• Data Interface: Parallel (exact match required)
• Architecture: SAR (exact match required)
• Supply Voltages: 5V analog and digital (exact match required)
• Reference Type: External and Internal support (exact match required)
• Package: 28-SSOP form factor (exact match required)

Allowable Variation Parameters:

• Sampling Rate: May differ from 250k SPS
• Operating Temperature Range: May differ from -40°C ~ 85°C
• Manufacturer: May differ from Texas Instruments
• Product Status: Active status preferred for availability
• Moisture Sensitivity Level: May differ
• Packaging Format: May differ (Tube vs. other formats)

The three substitute parts listed below meet all core electrical compatibility requirements while offering varying sampling rates and operating temperature ranges.

Parameter Comparison

Engineering Selection Recommendations

AD976AARSZ (Analog Devices Inc.) This substitute maintains the 16-bit resolution, single-ended input configuration, and 5V supply requirements of the original ADS8505IBDBRG4. The sampling rate is reduced to 200k SPS, representing an 80% retention of the original specification. Operating temperature range matches the original at -40°C ~ 85°C. Product status is Active, ensuring availability. This part is suitable for applications where the reduced sampling rate does not impact system performance requirements.

AD976BRSZ (Analog Devices Inc.) This substitute maintains full electrical compatibility with the ADS8505IBDBRG4 across all core parameters. The sampling rate is reduced to 100k SPS, representing a 40% retention of the original specification. Operating temperature range matches the original at -40°C ~ 85°C. Product status is Active with higher inventory availability (1529 Pcs). This part is suitable for lower-speed data acquisition applications where the reduced sampling rate is acceptable.

LTC1606ACG#PBF (Analog Devices Inc.) This substitute maintains the 16-bit resolution, single-ended input configuration, parallel data interface, and 5V supply requirements. The sampling rate matches the original at 250k SPS. Operating temperature range is restricted to 0°C ~ 70°C, representing a narrower specification than the original -40°C ~ 85°C range. Product status is Active. This part is suitable for applications operating within the 0°C ~ 70°C temperature envelope where the full 250k SPS sampling rate is required.

All three substitutes are ROHS3 compliant and maintain the 28-SSOP surface mount package form factor, ensuring PCB layout compatibility.

Frequently Asked Questions (FAQ)

Q: Can AD976AARSZ be used as a direct replacement for ADS8505IBDBRG4? A: AD976AARSZ is electrically compatible across all core parameters: 16-bit resolution, single-ended input, parallel interface, SAR architecture, and 5V supply voltages. The sampling rate is reduced from 250k SPS to 200k SPS. If your application does not require the full 250k SPS sampling rate, this part provides a compatible substitute. Operating temperature range remains -40°C ~ 85°C.

Q: What is the primary difference between AD976AARSZ and AD976BRSZ? A: Both parts are manufactured by Analog Devices Inc. and share identical electrical specifications except for sampling rate. AD976AARSZ operates at 200k SPS, while AD976BRSZ operates at 100k SPS. Selection depends on the minimum sampling rate required by your application. Both maintain -40°C ~ 85°C operating temperature range and full 16-bit resolution.

Q: Is LTC1606ACG#PBF suitable for industrial temperature applications? A: LTC1606ACG#PBF operates within 0°C ~ 70°C temperature range, which is narrower than the original ADS8505IBDBRG4 specification of -40°C ~ 85°C. This part is not suitable for applications requiring operation below 0°C or above 70°C. Use this substitute only when your application operates within this restricted temperature envelope.

Q: Are all substitute parts available in the same package format? A: Yes. All substitute parts use the 28-SSOP (0.209", 5.30mm Width) surface mount package, identical to the original ADS8505IBDBRG4. PCB layout and footprint compatibility is maintained across all substitutes.

Q: What is the inventory status of these substitute parts? A: AD976AARSZ has 2260 Pcs in stock, AD976BRSZ has 1529 Pcs in stock, and LTC1606ACG#PBF has 868 Pcs in stock. All three substitutes are classified as Active products, ensuring ongoing availability compared to the discontinued ADS8505IBDBRG4.

Q: Do all substitutes support both external and internal reference configurations? A: Yes. All three substitute parts (AD976AARSZ, AD976BRSZ, and LTC1606ACG#PBF) support both external and internal reference type configurations, matching the original ADS8505IBDBRG4 specification.