ADCS7476AIMF Equivalent & Substitute Parts

Part Overview

The ADCS7476AIMF is a 12-bit Analog-to-Digital Converter (ADC) manufactured by Texas Instruments, housed in a SOT-23-6 surface mount package. This single-channel SAR (Successive Approximation Register) architecture device operates across a 2.7V to 5.25V supply range with a 1 MHz sampling rate and SPI/DSP data interface. The part is currently in Last Time Buy status, indicating end-of-life production. Alternative equivalent parts are necessary to ensure design continuity and long-term component availability for new production runs and ongoing system support.

Key Parameters

Parameter	Value
Resolution (Bits)	12
Sampling Rate	1 MHz
Number of Inputs	1
Input Type	Single Ended
Data Interface	SPI, DSP
Architecture	SAR
Voltage Supply Range (Analog)	2.7V ~ 5.25V
Voltage Supply Range (Digital)	2.7V ~ 5.25V
Operating Temperature	-40°C ~ 125°C
Package	SOT-23-6
Mounting Type	Surface Mount
RoHS Status	ROHS3 Compliant
MSL Rating	1 (Unlimited)

Substitute Part Grouping Explanation

Substitution eligibility for the ADCS7476AIMF is determined by strict equivalence across the following critical parameters:

12-bit resolution
1 MHz sampling rate
Single-channel, single-ended input configuration
SPI and DSP data interface support
SAR architecture with 1:1 S/H:ADC ratio
Supply voltage range: 2.7V to 5.25V (both analog and digital)
SOT-23-6 package footprint
Surface mount technology
ROHS3 compliance and MSL 1 rating

Parts are grouped into three categories: Direct Manufacturer Equivalents (identical part numbers with packaging variants), Parametric Equivalents (functionally identical across all electrical specifications), and Manufacturer Recommended Alternatives (from Analog Devices Inc., with minor parameter variations noted).

Parameter Comparison

Part Number	Manufacturer	Resolution	Sampling Rate	Supply Voltage (Analog)	Supply Voltage (Digital)	Temp Range	Packaging	Status
ADCS7476AIMF	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	CT & Digi-Reel	Last Time Buy
ADCS7476AIMF/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	CT & Digi-Reel	Active
ADCS7476AIMFX/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	TR	Active
ADC121S101CIMF/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	TR	Active
ADC121S101CIMFX/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	CT & Digi-Reel	Active
ADC121S101QIMF/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	TR	Active
ADC121S101QIMFX/NOPB	Texas Instruments	12-bit	1M	2.7V ~ 5.25V	2.7V ~ 5.25V	-40°C ~ 125°C	TR	Active
AD7476ARTZ-500RL7	Analog Devices Inc.	12-bit	1M	2.35V ~ 5.25V	2.35V ~ 5.25V	-40°C ~ 85°C	CT & Digi-Reel	Active
AD7476ARTZ-REEL7	Analog Devices Inc.	12-bit	1M	2.35V ~ 5.25V	2.35V ~ 5.25V	-40°C ~ 85°C	CT & Digi-Reel	Active
AD7476BRTZ-R2	Analog Devices Inc.	12-bit	600k	2.35V ~ 5.25V	2.35V ~ 5.25V	-40°C ~ 85°C	TR	Active
AD7476BRTZ-REEL7	Analog Devices Inc.	12-bit	600k	2.35V ~ 5.25V	2.35V ~ 5.25V	-40°C ~ 85°C	TR	Active

Engineering Selection Recommendations

For direct replacement of ADCS7476AIMF in active production, ADCS7476AIMF/NOPB is the primary choice, offering identical electrical specifications and Active product status with higher inventory availability (4,835 units). This part maintains the same packaging format and temperature range.

For designs requiring Active status components with extended inventory, the Texas Instruments ADC121S101 series (CIMFX/NOPB, QIMF/NOPB, QIMFX/NOPB variants) provides full parametric equivalence across all critical electrical parameters. The QIMF and QIMFX variants include AEC-Q100 automotive qualification, suitable for applications requiring automotive-grade reliability.

Analog Devices AD7476 series parts (ARTZ-500RL7, ARTZ-REEL7) are functionally equivalent but operate within a narrower supply voltage range (2.35V minimum versus 2.7V) and reduced temperature range (-40°C to 85°C versus 125°C). These parts are suitable only for applications where the lower voltage and temperature specifications are acceptable.

AD7476BRTZ variants (R2, REEL7) operate at 600 kHz sampling rate, not 1 MHz, and are not suitable for applications requiring 1 MHz sampling performance.

Frequently Asked Questions (FAQ)

Q: Can ADCS7476AIMF be replaced with AD7476ARTZ-REEL7?

A: Partial compatibility exists. Both are 12-bit SAR ADCs in SOT-23-6 packages with 1 MHz sampling rate and SPI/DSP interfaces. However, the AD7476 operates at a minimum supply voltage of 2.35V (versus 2.7V for ADCS7476AIMF) and has a maximum operating temperature of 85°C (versus 125°C). Substitution is valid only if your application operates within these narrower specifications.

Q: What is the difference between ADCS7476AIMF and ADCS7476AIMF/NOPB?

A: These are electrically identical. The /NOPB suffix indicates "No Lead (Pb)" and refers to RoHS-compliant lead-free packaging. Both parts are ROHS3 compliant. The primary difference is product status: ADCS7476AIMF is Last Time Buy, while ADCS7476AIMF/NOPB is Active with higher inventory.

Q: Are ADC121S101QIMF/NOPB and ADC121S101QIMFX/NOPB interchangeable?

A: Yes, these parts are electrically and functionally identical. Both feature AEC-Q100 automotive qualification, 12-bit resolution, 1 MHz sampling rate, and identical supply voltage ranges. The difference is packaging format: QIMF uses Cut Tape & Digi-Reel, while QIMFX uses Tape & Reel. Select based on your procurement and assembly requirements.

Q: Why do AD7476BRTZ variants show 600 kHz sampling rate instead of 1 MHz?

A: The AD7476BRTZ is a different speed grade within the AD7476 family. It is not a direct substitute for 1 MHz applications. Use only if your design can operate at 600 kHz sampling rate.

Q: Can I use ADC121S101 parts in place of ADCS7476AIMF?

A: Yes. All ADC121S101 variants (CIMF/NOPB, CIMFX/NOPB, QIMF/NOPB, QIMFX/NOPB) meet or exceed the electrical specifications of ADCS7476AIMF. They share identical 12-bit resolution, 1 MHz sampling rate, single-channel single-ended input, SPI/DSP interface, and supply voltage range. Pin compatibility and PCB layout must be verified for your specific application.

Q: What does MSL 1 (Unlimited) mean for moisture sensitivity?

A: MSL 1 indicates the lowest moisture sensitivity level. These components can be stored indefinitely without special moisture control measures and do not require baking before reflow soldering, simplifying manufacturing and storage logistics.

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