ADS1286P Equivalent & Substitute Parts

Part Overview

The ADS1286P is a 12-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, featuring a single differential input, SAR architecture, and SPI data interface. This device is classified as obsolete, necessitating identification of functionally equivalent alternatives for ongoing design support and procurement continuity. The ADS1286P operates with 5V analog and digital supply voltages and delivers a 20 kHz sampling rate across a 0°C to 70°C operating temperature range in an 8-DIP through-hole package.

Substiute Parts

ADS1286P

Texas InstrumentsIn Stock: 9601ADS1286P Datasheet

Current PartRFQ

LTC1286CN8#PBF

Analog Devices Inc.In Stock: 1396LTC1286CN8#PBF Datasheet

MFR RecommendedRFQ

LTC1286IN8#PBF

Analog Devices Inc.In Stock: 1254LTC1286IN8#PBF Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the ADS1286P are identified based on strict equivalence across core functional and mechanical parameters. The following criteria determine substitution validity:

Core Functional Parameters:

• Resolution: 12 bits
• Number of inputs: 1
• Input configuration: Differential
• Architecture: SAR
• Data interface: SPI
• Configuration type: S/H-ADC
• Reference type: External

Mechanical Parameters:

• Package: 8-DIP (0.300", 7.62mm)
• Mounting: Through Hole
• Supplier device package: 8-PDIP

Compliance Parameters:

• RoHS3 Compliant
• REACH Unaffected
• ECCN: EAR99

The LTC1286CN8#PBF and LTC1286IN8#PBF, both manufactured by Analog Devices Inc., satisfy all core functional and mechanical equivalence criteria. Both devices maintain 12-bit resolution, single differential input, SAR architecture, SPI interface, and identical package specifications. Differences in supply voltage ranges, sampling rates, and operating temperature ranges are noted in the parameter comparison table below.

Parameter Comparison

Engineering Selection Recommendations

LTC1286CN8#PBF Selection Criteria: The LTC1286CN8#PBF is an active product from Analog Devices Inc. with ROHS3 compliance and REACH unaffected status. This device operates within the commercial temperature range (0°C ~ 70°C), matching the ADS1286P operating window. The supply voltage range of 4.5V to 9V encompasses the 5V requirement of the original design. Moisture sensitivity level is improved to MSL 1 (Unlimited) compared to the ADS1286P MSL 2 (1 Year). The sampling rate of 12.5 kHz is lower than the ADS1286P specification of 20 kHz; this difference must be evaluated against application timing requirements.

LTC1286IN8#PBF Selection Criteria: The LTC1286IN8#PBF is an active product from Analog Devices Inc. with ROHS3 compliance and REACH unaffected status. This device extends the operating temperature range to -40°C to 85°C, providing broader environmental coverage than the ADS1286P. The supply voltage range of 4.5V to 9V encompasses the 5V requirement. Moisture sensitivity level is improved to MSL 1 (Unlimited). The sampling rate of 12.5 kHz is lower than the ADS1286P specification of 20 kHz; this difference must be evaluated against application timing requirements. The extended temperature range makes this variant suitable for applications requiring operation beyond the commercial temperature window.

Both substitute parts maintain functional equivalence in resolution, input configuration, architecture, data interface, and package specifications. Selection between LTC1286CN8#PBF and LTC1286IN8#PBF depends on operating temperature requirements and sampling rate tolerance of the target application.

Frequently Asked Questions (FAQ)

Q: Can the LTC1286CN8#PBF or LTC1286IN8#PBF be used as direct replacements for the ADS1286P?

A: Both LTC1286 variants are functionally equivalent to the ADS1286P in terms of resolution (12 bits), input configuration (single differential), architecture (SAR), data interface (SPI), and package type (8-DIP through-hole). Direct pin-compatible substitution is supported. However, the sampling rate difference (12.5 kHz versus 20 kHz) and supply voltage range differences must be evaluated for specific application requirements.

Q: What is the primary difference between the LTC1286CN8#PBF and LTC1286IN8#PBF?

A: The primary difference is the operating temperature range. The LTC1286CN8#PBF operates from 0°C to 70°C (commercial range), while the LTC1286IN8#PBF operates from -40°C to 85°C (industrial range). Both devices have identical functional specifications and package configurations. Selection depends on the thermal environment of the target application.

Q: Why is the sampling rate of the LTC1286 variants lower than the ADS1286P?

A: The LTC1286CN8#PBF and LTC1286IN8#PBF specify a maximum sampling rate of 12.5 kHz, compared to the ADS1286P specification of 20 kHz. This is a documented specification difference between the two device families. Applications requiring the full 20 kHz sampling rate must evaluate whether the lower rate is acceptable for their signal acquisition requirements.

Q: Are the supply voltage requirements compatible with existing designs?

A: The ADS1286P requires fixed 5V supplies for both analog and digital inputs. The LTC1286 variants accept supply voltages ranging from 4.5V to 9V, which encompasses the 5V requirement. Existing 5V supply designs are compatible with both substitute parts without modification.

Q: What is the significance of the MSL (Moisture Sensitivity Level) difference?

A: The ADS1286P has MSL 2 (1 Year), while both LTC1286 variants have MSL 1 (Unlimited). MSL 1 indicates superior moisture resistance and longer shelf life without requiring special storage conditions. This represents an improvement in component reliability and storage flexibility for the substitute parts.

Q: Are both substitute parts currently available?

A: Both the LTC1286CN8#PBF and LTC1286IN8#PBF are classified as active products with documented inventory availability. The ADS1286P is obsolete, making these active alternatives necessary for new procurement and design continuity.

Q: Do the substitute parts maintain RoHS and REACH compliance?

A: Yes, both LTC1286CN8#PBF and LTC1286IN8#PBF are ROHS3 compliant and REACH unaffected, matching the compliance status of the ADS1286P.