ADS7817U Equivalent & Substitute Parts Reference

Part Overview

ADS7817U is a 12-bit SAR analog to digital converter (ADC) from Texas Instruments, designed for differential input with SPI data interface and 1 input channel, housed in an 8-SOIC surface-mount package. This data acquisition product is currently obsolete and listed with 2842 pieces in stock. For design continuity, maintenance, or production needs, compatible substitute models with matched electrical and mechanical parameters must be identified.

Key Parameters

Manufacturer Part Number	Manufacturer	Number of Bits	Sampling Rate (Per Second)	Number of Inputs	Input Type	Data Interface	Configuration	Ratio - S/H:ADC	Number of A/D Converters	Architecture	Reference Type	Voltage - Supply, Analog	Voltage - Supply, Digital	Operating Temperature	Package / Case	Supplier Device Package	Mounting Type	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	ECCN	HTSUS
ADS7817U	Texas Instruments	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	ROHS3 Compliant	2 (1 Year)	REACH Unaffected	EAR99	8542.39.0030

Substitute Part Grouping Explanation

Substitute parts for the ADS7817U are selected strictly based on matching the following key parameters: ADC resolution (12-bit), sampling rate (≥200k samples/sec), differential input capability, SPI data interface, input configuration (S/H-ADC, 1:1 ratio), number of A/D channels (1), SAR architecture, external reference, supply voltages (analog and digital at 5V), operating temperature, package/case dimensions (8-SOIC 0.154" x 3.90mm), mounting type (surface mount), compliance (RoHS, REACH), and ECCN/HTSUS status.

Parameter Comparison

Manufacturer Part Number	Manufacturer	Number of Bits	Sampling Rate (Per Second)	Number of Inputs	Input Type	Data Interface	Configuration	Ratio - S/H:ADC	Number of A/D Converters	Architecture	Reference Type	Voltage - Supply, Analog	Voltage - Supply, Digital	Operating Temperature	Package / Case	Supplier Device Package	Mounting Type	RoHS Status	Moisture Sensitivity Level (MSL)	REACH Status	ECCN	HTSUS
ADS7817U	Texas Instruments	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	ROHS3 Compliant	2 (1 Year)	REACH Unaffected	EAR99	8542.39.0030
ADS7816U	Texas Instruments	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	ROHS3 Compliant	2 (1 Year)	REACH Unaffected	EAR99	8542.39.0001
ADS7816UB	Texas Instruments	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	ROHS3 Compliant	2 (1 Year)	REACH Unaffected	EAR99	8542.39.0001
ADS7816UC	Burr Brown	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	-	-	-	EAR99	8542.39.0001
ADS7817UC	Burr Brown	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	-	-	-	EAR99	8542.39.0001
LTC1860CS8#PBF	Analog Devices Inc.	12	250k	1	Differential, Single Ended	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm Width)	8-SO	Surface Mount	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8542.39.0001
LTC1860CS8#TRPBF	Analog Devices Inc.	12	250k	1	Differential, Single Ended	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	0°C ~ 70°C	8-SOIC (0.154", 3.90mm Width)	8-SO	Surface Mount	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8542.39.0001
ISL267817IBZ	Renesas Electronics Corporation	12	200k	1	Differential	SPI	S/H-ADC	1:1	1	SAR	External	5V	5V	-40°C ~ 85°C	8-SOIC (0.154", 3.90mm Width)	8-SOIC	Surface Mount	ROHS3 Compliant	1 (Unlimited)	REACH Unaffected	EAR99	8542.39.0001

Engineering Selection Recommendations

Parametric equivalents including ADS7816U, ADS7816UB, ADS7816UC, ADS7817UC, LTC1860CS8#PBF, LTC1860CS8#TRPBF, and ISL267817IBZ meet core equivalency requirements in terms of resolution, input configuration, data interface, supply voltage, package and mounting, and regulatory compliance. Select substitutes based on matching RoHS and REACH status, ECCN, and HTSUS codes for regional and regulatory alignment. Consider moisture sensitivity level where storage conditions or assembly environment require strict controls.

Frequently Asked Questions (FAQ)

Q1: What are the primary criteria for selecting a substitute for ADS7817U? A1: Substitute selection is based strictly on matching resolution (12-bit), sampling rate (≥200k samples/sec), input type (differential), SPI interface, external reference, supply voltages (analog/digital 5V), package/case specifications (8-SOIC), and compliance (RoHS, REACH).

Q2: Why is package compatibility important? A2: Substitutes must have identical 8-SOIC package dimensions and surface mount capability to ensure footprint and soldering process compatibility.

Q3: Are equivalents from other manufacturers included? A3: Only those with identical electrical and mechanical characteristics within the specified parameters are listed, such as parts from Analog Devices Inc. and Renesas Electronics Corporation.

Q4: Does a higher sampling rate affect substitution? A4: Substitute parts such as LTC1860 series offer a higher sampling rate (250k); this is allowed as it meets or exceeds the minimum parameter of ADS7817U.

Q5: How is compliance verified between substitutes? A5: Each substitute part lists RoHS status, REACH status, ECCN, and HTSUS codes, facilitating alignment with regulatory requirements provided in the original ADS7817U documentation.

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