AD7810YR Equivalent & Substitute Parts

Part Overview

The AD7810YR is a 10-bit Analog-to-Digital Converter (ADC) manufactured by Analog Devices Inc., designed for single-channel data acquisition applications. It features a Successive Approximation Register (SAR) architecture with an external reference, SPI data interface, and operates across a wide supply voltage range of 2.7V to 5.25V. The device is currently classified as obsolete, making identification of equivalent and substitute parts essential for ongoing system support and new design implementations.

Key Parameters

Parameter	Value
Resolution	10 Bits
Sampling Rate	350 kSPS
Number of Inputs	1
Input Type	Pseudo-Differential
Data Interface	SPI
Architecture	SAR
Reference Type	External
Analog Supply Voltage	2.7V ~ 5.25V
Digital Supply Voltage	2.7V ~ 5.25V
Operating Temperature Range	-40°C ~ 105°C
Package	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount

Substitute Part Grouping Explanation

Substitute parts for the AD7810YR are classified based on strict electrical and mechanical parameter alignment:

Direct Equivalent (Identical Specifications):

AD7810YRZ: Identical electrical specifications, same 10-bit resolution, 350 kSPS sampling rate, external reference configuration, and 8-SOIC package. Differs only in packaging format (Tube) and product status (Active vs. Obsolete).

Similar Substitute (Compatible with Parameter Variance):

MCP3001-I/SN: Matches core functional parameters including 10-bit resolution, single pseudo-differential input, SPI interface, external reference, and 8-SOIC package. Acceptable variance exists in sampling rate (200 kSPS vs. 350 kSPS), maximum analog supply voltage (5.5V vs. 5.25V), and operating temperature upper limit (85°C vs. 105°C).

Substitution eligibility is determined by matching: resolution (10 bits), input configuration (1 pseudo-differential), data interface (SPI), reference type (external), package form factor (8-SOIC), and mounting technology (surface mount).

Parameter Comparison

Parameter	AD7810YR (Main)	AD7810YRZ (Direct Equivalent)	MCP3001-I/SN (Similar Substitute)
Manufacturer	Analog Devices Inc.	Analog Devices Inc.	Microchip Technology
Resolution	10 Bits	10 Bits	10 Bits
Sampling Rate	350 kSPS	350 kSPS	200 kSPS
Number of Inputs	1	1	1
Input Type	Pseudo-Differential	Pseudo-Differential	Pseudo-Differential
Data Interface	SPI	SPI	SPI
Architecture	SAR	SAR	SAR
Reference Type	External	External	External
Analog Supply Voltage	2.7V ~ 5.25V	2.7V ~ 5.25V	2.7V ~ 5.5V
Digital Supply Voltage	2.7V ~ 5.25V	2.7V ~ 5.25V	2.7V ~ 5.5V
Operating Temperature Range	-40°C ~ 105°C	-40°C ~ 105°C	-40°C ~ 85°C
Package / Case	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)	8-SOIC (0.154", 3.90mm Width)
Mounting Type	Surface Mount	Surface Mount	Surface Mount
Product Status	Obsolete	Active	Active
RoHS Status	Not Specified	ROHS3 Compliant	ROHS3 Compliant

Engineering Selection Recommendations

For Direct Replacement: AD7810YRZ is the preferred substitute for AD7810YR applications. Both devices are manufactured by Analog Devices Inc. and share identical electrical specifications. AD7810YRZ maintains active product status and ROHS3 compliance, making it suitable for new designs and legacy system support without circuit modification.

For Alternative Substitution: MCP3001-I/SN from Microchip Technology is acceptable where application requirements permit reduced sampling rate (200 kSPS vs. 350 kSPS) and lower maximum operating temperature (85°C vs. 105°C). This device maintains ROHS3 compliance and active product status. Pin-compatible 8-SOIC packaging ensures mechanical compatibility. Verify that the 150 kSPS sampling rate reduction and 20°C temperature ceiling reduction do not conflict with system performance specifications before implementation.

Frequently Asked Questions (FAQ)

Q: Can AD7810YRZ be used as a direct replacement for AD7810YR? A: Yes. AD7810YRZ is electrically and mechanically identical to AD7810YR. Both devices feature 10-bit resolution, 350 kSPS sampling rate, single pseudo-differential input, SPI interface, external reference configuration, and 8-SOIC packaging. The primary difference is product status (Active vs. Obsolete) and packaging format (Tube).

Q: What are the key differences between AD7810YR and MCP3001-I/SN? A: Both devices share 10-bit resolution, single pseudo-differential input, SPI interface, external reference type, and 8-SOIC package form factor. MCP3001-I/SN operates at 200 kSPS sampling rate compared to AD7810YR's 350 kSPS, and supports operating temperatures up to 85°C versus 105°C for AD7810YR. Analog and digital supply voltage ranges are slightly wider for MCP3001-I/SN (2.7V ~ 5.5V vs. 2.7V ~ 5.25V).

Q: Are all substitute parts pin-compatible with AD7810YR? A: Yes. All listed substitute parts use the 8-SOIC package with identical 0.154" (3.90mm) width, ensuring mechanical and electrical pin compatibility for surface mount applications.

Q: Which substitute part should be selected for high-temperature applications? A: AD7810YRZ maintains the full operating temperature range of -40°C to 105°C, matching AD7810YR specifications. MCP3001-I/SN is limited to -40°C to 85°C and is not suitable for applications requiring operation above 85°C.

Q: Are substitute parts RoHS compliant? A: AD7810YRZ and MCP3001-I/SN are both ROHS3 compliant. RoHS status for the original AD7810YR is not specified in available documentation.

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