Equivalent & Substitute Parts for ADC08831IMX

Part Overview

The ADC08831IMX is an 8-bit Analog to Digital Converter manufactured by Texas Instruments, designed for single-channel data acquisition applications. This part operates as a Successive Approximation Register (SAR) architecture device with external reference capability and SPI/DSP interface support. The ADC08831IMX is classified as obsolete, which necessitates identification of functionally equivalent alternatives for ongoing design support and procurement continuity. Substitute parts must maintain electrical compatibility across core parameters including resolution, sampling rate, input configuration, supply voltage ranges, and package form factor.

Key Parameters

Parameter	ADC08831IMX
Number of Bits	8
Sampling Rate (Per Second)	250k
Number of Inputs	1
Input Type	Differential, Pseudo-Differential, Single Ended
Data Interface	SPI, DSP
Architecture	SAR
Reference Type	External
Voltage - Supply, Analog	4.5V ~ 6V
Voltage - Supply, Digital	4.5V ~ 6V
Operating Temperature	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount
Part Status	Obsolete

Substitute Part Grouping Explanation

Substitution eligibility for the ADC08831IMX is determined by strict alignment with the following critical parameters:

Mandatory Compatibility Parameters:

Resolution: 8 bits
Package: 8-SOIC form factor
Mounting: Surface Mount
Architecture: SAR
Reference: External
Single Input Channel
Data Interface: SPI capability

Electrical Operating Range Considerations: The ADC08831IMX operates with analog and digital supply voltages of 4.5V to 6V and a sampling rate of 250 kSPS. Substitute parts identified in this reference maintain the same 8-bit resolution, single-channel input, SAR architecture, and 8-SOIC package. However, substitute parts from the LTC1196 family operate at higher sampling rates (1 MSPS) and support wider supply voltage ranges (2.7V to 6V), which are compatible with applications designed for the ADC08831IMX. The LTC1196 series also supports differential input configuration with SPI interface, meeting core functional requirements.

Packaging Variants: Substitute parts are available in multiple packaging options (Tube, Bulk, Tape & Reel) to accommodate different procurement and assembly workflows. Selection should align with production volume and supply chain requirements.

Parameter Comparison

Parameter	ADC08831IMX	ADC08831IMX/NOPB	LTC1196-1ACS8#PBF	LTC1196-1ACS8#TRPBF	LTC1196-1BCS8#PBF	LTC1196-1BCS8#TRPBF	LTC1196-2ACS8#PBF	LTC1196-2ACS8#TRPBF	LTC1196-2BCS8#PBF	LTC1196-2BCS8#TRPBF
Manufacturer	Texas Instruments	Texas Instruments	Analog Devices Inc.	Analog Devices Inc.	Linear Technology	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.	Analog Devices Inc.
Number of Bits	8	8	8	8	8	8	8	8	8	8
Sampling Rate (Per Second)	250k	250k	1M	1M	1M	1M	1M	1M	1M	1M
Number of Inputs	1	1	1	1	1	1	1	1	1	1
Input Type	Differential, Pseudo-Differential, Single Ended	Differential, Pseudo-Differential, Single Ended	Differential	Differential	Differential	Differential	Differential	Differential	Differential	Differential
Data Interface	SPI, DSP	SPI, DSP	SPI	SPI	SPI	SPI	SPI	SPI	SPI	SPI
Architecture	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR	SAR
Reference Type	External	External	External	External	External	External	External	External	External	External
Voltage - Supply, Analog	4.5V ~ 6V	4.5V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V
Voltage - Supply, Digital	4.5V ~ 6V	4.5V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V	2.7V ~ 6V
Operating Temperature	-40°C ~ 85°C	-40°C ~ 85°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C	0°C ~ 70°C
Package / Case	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC	8-SOIC
Mounting Type	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active	Active	Active	Active	Active	Active	Active	Active
RoHS Status	RoHS non-compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	Not specified	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

Primary Recommendation: ADC08831IMX/NOPB

The ADC08831IMX/NOPB is the direct successor to the obsolete ADC08831IMX. This part maintains identical electrical specifications including 8-bit resolution, 250 kSPS sampling rate, 4.5V to 6V supply voltage range, and -40°C to 85°C operating temperature. The ADC08831IMX/NOPB is classified as Active product status and carries ROHS3 compliance certification, addressing regulatory requirements for new designs. This part is the preferred choice for applications requiring exact parameter matching and extended temperature range operation.

Secondary Recommendation: LTC1196 Series (Analog Devices Inc.)

The LTC1196 family provides functional equivalence with enhanced performance characteristics. All LTC1196 variants maintain 8-bit resolution, single-channel input, SAR architecture, external reference configuration, and 8-SOIC package form factor. The LTC1196 series operates at 1 MSPS sampling rate, providing higher throughput than the original ADC08831IMX. Supply voltage range extends to 2.7V minimum, enabling operation in lower-voltage applications. All LTC1196 parts carry ROHS3 compliance and Active product status.

Operating Temperature Consideration:

The LTC1196 series operates within 0°C to 70°C temperature range, which is narrower than the ADC08831IMX extended range of -40°C to 85°C. Applications requiring operation below 0°C or above 70°C must use ADC08831IMX/NOPB.

Packaging Selection:

LTC1196 parts are available in Tube (standard packaging), Bulk, and Tape & Reel (TR) configurations. Selection should align with production volume, assembly process requirements, and supply chain logistics.

Frequently Asked Questions (FAQ)

Q1: Can LTC1196 parts directly replace ADC08831IMX in existing designs?

LTC1196 parts are functionally compatible with ADC08831IMX for applications operating within 0°C to 70°C temperature range. Both device families share 8-bit resolution, single-channel input, SAR architecture, external reference type, and 8-SOIC package. The LTC1196 operates at 1 MSPS versus 250 kSPS for ADC08831IMX, providing higher sampling capability. Applications requiring extended temperature operation (-40°C to 85°C) must use ADC08831IMX/NOPB.

Q2: What is the difference between LTC1196-1 and LTC1196-2 variants?

The provided data specifies both LTC1196-1 and LTC1196-2 series parts with identical electrical parameters. Differentiation between these variants is not defined in the supplied technical specifications. Consult manufacturer datasheets for grade or performance distinctions.

Q3: Does packaging type affect electrical performance?

Packaging type (Tube, Bulk, Tape & Reel) does not affect electrical performance or functional characteristics. Packaging selection is determined by procurement volume, assembly automation requirements, and supply chain handling procedures. All packaging variants of a given part number maintain identical electrical specifications.

Q4: Are LTC1196 parts RoHS compliant?

All LTC1196 variants listed carry ROHS3 compliance certification. The obsolete ADC08831IMX is RoHS non-compliant. The active ADC08831IMX/NOPB variant is ROHS3 compliant. RoHS compliance is required for applications subject to environmental regulations in the European Union and equivalent jurisdictions.

Q5: What supply voltage range should be considered for substitution?

The ADC08831IMX operates with 4.5V to 6V analog and digital supply voltages. LTC1196 parts support 2.7V to 6V range, which encompasses the original operating window. Designs operating at voltages below 4.5V require LTC1196 parts. Designs operating strictly within 4.5V to 6V range are compatible with both device families.

Q6: How does sampling rate affect substitution suitability?

ADC08831IMX operates at 250 kSPS. LTC1196 parts operate at 1 MSPS. Higher sampling rate in LTC1196 provides increased throughput and is backward compatible with applications designed for lower sampling rates. Applications requiring exactly 250 kSPS operation should use ADC08831IMX/NOPB or configure LTC1196 devices with appropriate timing control.

Q7: What inventory considerations apply to these parts?

Current inventory levels are: ADC08831IMX (4,777 pcs), ADC08831IMX/NOPB (1,760 pcs), LTC1196-1ACS8#PBF (751 pcs), LTC1196-1ACS8#TRPBF (728 pcs), LTC1196-1BCS8#PBF (1,915 pcs), LTC1196-1BCS8#TRPBF (871 pcs), LTC1196-2ACS8#PBF (1,010 pcs), LTC1196-2ACS8#TRPBF (900 pcs), LTC1196-2BCS8#PBF (2,908 pcs), LTC1196-2BCS8#TRPBF (4,276 pcs). Procurement planning should account for available stock levels and lead times.

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