AMC1203DUB Equivalent & Substitute Parts

Part Overview

The AMC1203DUB is a 16-bit Sigma-Delta analog-to-digital converter manufactured by Texas Instruments, designed for single-channel differential input data acquisition applications. This device features an internal reference, SPI data interface, and operates across the industrial temperature range of -40°C to 105°C. The AMC1203DUB is currently in Last Time Buy status, making identification of equivalent substitute parts essential for ongoing design support and procurement planning.

Key Parameters

Parameter	Value
Resolution	16 Bit
Sampling Rate	40k Samples Per Second
Number of Inputs	1
Input Type	Differential
Architecture	Sigma-Delta
Data Interface	SPI
Reference Type	Internal
Analog Supply Voltage	5V
Digital Supply Voltage	5V
Operating Temperature Range	-40°C to 105°C
Package Type	8-SMD, Gull Wing
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	3 (168 Hours)

Substitute Part Grouping Explanation

Substitute parts for the AMC1203DUB are qualified based on identical electrical and mechanical parameters. The following criteria determine substitutability:

Critical Parameters for Substitution:

Resolution: 16 Bit
Sampling Rate: 40k Samples Per Second
Input Configuration: 1 Differential Input
Architecture: Sigma-Delta
Data Interface: SPI
Supply Voltages: 5V Analog and Digital
Operating Temperature: -40°C to 105°C
Package: 8-SMD, Gull Wing (8-SOP)
RoHS and MSL Compliance: ROHS3 Compliant, MSL 3

The AMC1203DUB has two qualified substitutes: AMC1203DUBR (MFR Recommended) and AMC1203BDUB (Parametric Equivalent). Both maintain identical electrical specifications and package configuration, with differences limited to packaging format and product lifecycle status.

Parameter Comparison

Parameter	AMC1203DUB	AMC1203DUBR	AMC1203BDUB
Manufacturer	Texas Instruments	Texas Instruments	Texas Instruments
Resolution	16 Bit	16 Bit	16 Bit
Sampling Rate	40k SPS	40k SPS	40k SPS
Number of Inputs	1	1	1
Input Type	Differential	Differential	Differential
Architecture	Sigma-Delta	Sigma-Delta	Sigma-Delta
Data Interface	SPI	SPI	SPI
Reference Type	Internal	Internal	Internal
Analog Supply Voltage	5V	5V	5V
Digital Supply Voltage	5V	5V	5V
Operating Temperature	-40°C to 105°C	-40°C to 105°C	-40°C to 105°C
Package / Case	8-SMD, Gull Wing	8-SMD, Gull Wing	8-SMD, Gull Wing
Supplier Device Package	8-SOP	8-SOP	8-SOP
Mounting Type	Surface Mount	Surface Mount	Surface Mount
RoHS Status	ROHS3 Compliant	ROHS3 Compliant	ROHS3 Compliant
MSL Rating	3 (168 Hours)	3 (168 Hours)	3 (168 Hours)
Product Status	Last Time Buy	Active	Last Time Buy
Packaging Format	Tube	Cut Tape (CT) & Digi-Reel®	Tube

Engineering Selection Recommendations

AMC1203DUBR (MFR Recommended Substitute): This part is the preferred substitute for the AMC1203DUB. It maintains identical electrical and mechanical specifications while offering Active product status, ensuring long-term availability and manufacturer support. The primary difference is packaging format: AMC1203DUBR is supplied in Cut Tape (CT) and Digi-Reel® format with significantly higher inventory availability (14,300 pcs vs. 1,260 pcs). This variant is suitable for new designs and high-volume production requiring extended component lifecycle support.

AMC1203BDUB (Parametric Equivalent): This part provides full electrical and mechanical equivalence to the AMC1203DUB with identical SPI data interface support. Both devices share Last Time Buy status, indicating similar lifecycle constraints. AMC1203BDUB is available in Tube packaging matching the original part format. This option is appropriate for direct replacement in existing designs where packaging format consistency is required.

Frequently Asked Questions (FAQ)

Q: Can AMC1203DUBR be used as a direct replacement for AMC1203DUB? A: Yes. Both parts are electrically and mechanically identical across all specified parameters. The only difference is packaging format (Cut Tape/Digi-Reel vs. Tube) and product lifecycle status (Active vs. Last Time Buy). Selection depends on procurement requirements and production volume.

Q: What is the difference between the two substitute parts? A: AMC1203DUBR is in Active status with higher inventory and Cut Tape packaging, making it suitable for ongoing production. AMC1203BDUB maintains Tube packaging identical to the original AMC1203DUB and is appropriate for direct replacement in existing assembly processes.

Q: Are there any electrical performance differences between these parts? A: No. All three parts—AMC1203DUB, AMC1203DUBR, and AMC1203BDUB—share identical electrical specifications: 16-bit resolution, 40k sampling rate, differential input, SPI interface, and 5V supply requirements.

Q: Does packaging format affect circuit performance? A: No. Packaging format (Tube vs. Cut Tape/Digi-Reel) affects only procurement and assembly handling. Electrical and thermal performance remain identical across all packaging variants.

Q: Are all three parts RoHS and MSL compliant? A: Yes. All parts are ROHS3 Compliant with MSL 3 (168 Hours) rating, meeting environmental and moisture sensitivity requirements.

Q: Which part should be selected for a new design? A: AMC1203DUBR is recommended for new designs due to its Active product status, ensuring manufacturer support and long-term availability beyond the Last Time Buy window of the original AMC1203DUB.

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