AD977ARSZRL Equivalent & Substitute Parts

Part Overview

The AD977ARSZRL is a 16-bit Analog to Digital Converter manufactured by Analog Devices Inc., configured as a single-input SAR (Successive Approximation Register) ADC in a 28-SSOP surface mount package. The device operates at a 100 kHz sampling rate with external and internal reference options, supporting 5V analog and digital supply voltages. This component is Active in product status and ROHS3 compliant. Substitute parts are identified when equivalent electrical specifications and mechanical compatibility are maintained across the core functional parameters: resolution, sampling rate, input configuration, data interface, package type, and supply voltage requirements.

Substiute Parts

AD977ARSZRL

Analog Devices Inc.In Stock: 903AD977ARSZRL Datasheet

Current PartRFQ

ADS8509IDB

Texas InstrumentsIn Stock: 1474ADS8509IDB Datasheet

SimilarRFQ

ADS8519IDB

Texas InstrumentsIn Stock: 1464ADS8519IDB Datasheet

SimilarRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the AD977ARSZRL are qualified based on the following core electrical and mechanical parameters:

• Resolution: 16-bit ADC
• Sampling Rate: Minimum 100 kHz (substitute parts at 250 kHz maintain backward compatibility)
• Input Configuration: Single-ended, single input
• Data Interface: SPI protocol
• Architecture: SAR (Successive Approximation Register)
• Reference Options: External and internal reference support
• Package Type: 28-SSOP surface mount
• Supply Voltage - Analog: 5V nominal
• Supply Voltage - Digital: 5V nominal (ADS8519IDB supports 1.65V ~ 5.25V range, which includes 5V operation)
• Operating Temperature Range: -40°C ~ 85°C
• Compliance: ROHS3 compliant

The substitute parts ADS8509IDB and ADS8519IDB from Texas Instruments meet these criteria. Both devices maintain 16-bit resolution, single-ended single-input configuration, SPI interface, SAR architecture, and identical package specifications. The higher sampling rates (250 kHz) of these substitutes provide enhanced performance without compromising compatibility with applications designed for the AD977ARSZRL.

Parameter Comparison

Engineering Selection Recommendations

All three devices—AD977ARSZRL, ADS8509IDB, and ADS8519IDB—maintain Active product status and ROHS3 compliance, confirming ongoing manufacturer support and environmental regulatory adherence. The electrical parameters align across resolution, input configuration, data interface, package type, and operating temperature range, establishing functional equivalence for applications requiring 16-bit single-input SAR ADC operation with SPI communication.

The ADS8509IDB and ADS8519IDB substitutes provide higher sampling rates (250 kHz versus 100 kHz), which represents a performance enhancement rather than a limitation. Both Texas Instruments devices support the same external and internal reference architecture as the AD977ARSZRL. The ADS8519IDB offers extended digital supply voltage flexibility (1.65V ~ 5.25V), accommodating a broader range of system designs while maintaining 5V operation compatibility.

Selection between substitute parts depends on packaging requirements: ADS8509IDB is supplied in Tube packaging, while ADS8519IDB packaging is not specified in the provided data. Both maintain identical 28-SSOP mechanical specifications for PCB integration.

Frequently Asked Questions (FAQ)

Q: Can ADS8509IDB or ADS8519IDB directly replace AD977ARSZRL in existing designs?

A: Yes. Both Texas Instruments devices maintain identical 16-bit resolution, single-ended single-input configuration, SPI interface, SAR architecture, 28-SSOP package dimensions, and -40°C to 85°C operating temperature range. The higher 250 kHz sampling rate does not introduce incompatibility with applications designed for 100 kHz operation.

Q: What is the primary difference between ADS8509IDB and ADS8519IDB?

A: The ADS8519IDB supports an extended digital supply voltage range of 1.65V ~ 5.25V, compared to the ADS8509IDB's 5V nominal specification. Both devices are otherwise electrically equivalent and mechanically identical in the 28-SSOP package.

Q: Are there packaging differences between the substitute parts?

A: ADS8509IDB is supplied in Tube packaging. ADS8519IDB packaging specification is not provided in the available data. Both devices use the identical 28-SSOP (0.209", 5.30mm Width) surface mount package for PCB integration.

Q: Do the substitute parts support the same reference voltage options?

A: Yes. Both ADS8509IDB and ADS8519IDB support external and internal reference types, matching the AD977ARSZRL reference architecture.

Q: Are all three devices ROHS3 compliant?

A: Yes. AD977ARSZRL, ADS8509IDB, and ADS8519IDB are all ROHS3 compliant and maintain Active product status.

Q: What is the moisture sensitivity level difference?

A: AD977ARSZRL has MSL 3 (168 Hours). Both ADS8509IDB and ADS8519IDB have MSL 2 (1 Year), indicating lower moisture sensitivity and extended shelf life under controlled storage conditions.