ADS7887SDBVR Equivalent & Substitute Parts

Part Overview

The ADS7887SDBVR is a 10-bit Analog to Digital Converter (ADC) manufactured by Texas Instruments, designed for single-ended input applications requiring low-power data acquisition. This SAR (Successive Approximation Register) architecture device operates across a wide supply voltage range of 2.35V to 5.25V and features SPI digital interface compatibility. The part is classified as Active status with full RoHS3 compliance and REACH unaffected designation.

Substitute parts become necessary when the primary part experiences supply constraints, inventory limitations, or when design flexibility permits alternative qualified components meeting identical electrical and mechanical specifications.

Substiute Parts

ADS7887SDBVR

Texas InstrumentsIn Stock: 3423ADS7887SDBVR Datasheet

Current PartRFQ

ADS7887SDBVT

Texas InstrumentsIn Stock: 1376ADS7887SDBVT Datasheet

Parametric EquivalentRFQ

AD7477ARTZ-500RL7

Analog Devices Inc.In Stock: 1381AD7477ARTZ-500RL7 Datasheet

MFR RecommendedRFQ

AD7477ARTZ-REEL7

Analog Devices Inc.In Stock: 1662AD7477ARTZ-REEL7 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility is determined by strict parameter matching across electrical and mechanical specifications. The ADS7887SDBVR permits substitution with parts meeting the following criteria:

Critical Matching Parameters:

• Resolution: 10 bits
• Architecture: SAR
• Number of Inputs: 1 (Single Ended)
• Package: SOT-23-6
• Mounting: Surface Mount
• Data Interface: SPI compatible
• Supply Voltage: Minimum 2.35V analog and digital
• Operating Temperature: Minimum -40°C to 125°C range

Packaging Consideration: The primary part is supplied in Tape & Reel (TR) format. Substitutes may be available in Cut Tape (CT) & Digi-Reel® packaging, which maintains identical electrical performance and mechanical fit while offering alternative supply configurations.

Parameter Comparison

Engineering Selection Recommendations

ADS7887SDBVT (Texas Instruments - Parametric Equivalent)

This part maintains identical electrical specifications to the primary ADS7887SDBVR, including 1.25M sampling rate and full -40°C to 125°C operating range. The only distinction is packaging format (Cut Tape & Digi-Reel® versus Tape & Reel). Both parts carry Active product status, ROHS3 compliance, and equivalent moisture sensitivity ratings. Selection of this substitute is appropriate when packaging format flexibility is acceptable and inventory availability favors this configuration.

AD7477ARTZ-500RL7 and AD7477ARTZ-REEL7 (Analog Devices Inc. - Manufacturer Recommended)

These Analog Devices parts satisfy core functional requirements: 10-bit resolution, SAR architecture, single-ended input, SOT-23-6 package, and SPI interface compatibility. Both parts maintain Active product status and ROHS3 compliance with superior moisture sensitivity rating (MSL 1 - Unlimited versus MSL 2 - 1 Year).

Design considerations for AD7477 selection:

• Sampling rate is 1M (versus 1.25M for ADS7887), representing a 20% reduction in conversion speed
• Minimum supply voltage requirement is 2.7V (versus 2.35V), narrowing the lower operating range
• Maximum operating temperature is 85°C (versus 125°C), reducing the upper temperature specification
• Enhanced data interface flexibility includes DSP protocol support in addition to SPI

These specifications remain within acceptable substitution parameters when application requirements do not demand the full 1.25M sampling rate, extended low-voltage operation below 2.7V, or temperatures exceeding 85°C.

Frequently Asked Questions (FAQ)

Q: Can ADS7887SDBVT be used as a direct replacement for ADS7887SDBVR?

A: Yes. Both parts are manufactured by Texas Instruments with identical electrical specifications, including 10-bit resolution, 1.25M sampling rate, -40°C to 125°C operating range, and 2.35V to 5.25V supply voltage compatibility. The difference is packaging format only (Cut Tape & Digi-Reel® versus Tape & Reel). Electrical performance and PCB footprint are identical.

Q: What are the key differences between Texas Instruments ADS7887 and Analog Devices AD7477 parts?

A: The primary differences are sampling rate (1.25M versus 1M samples/second), minimum supply voltage (2.35V versus 2.7V), and maximum operating temperature (125°C versus 85°C). All other core parameters—10-bit resolution, SAR architecture, single-ended input, SOT-23-6 package, and SPI interface—are identical. AD7477 parts offer superior moisture sensitivity rating (MSL 1 unlimited versus MSL 2 one year) and additional DSP interface support.

Q: Are the AD7477ARTZ-500RL7 and AD7477ARTZ-REEL7 electrically identical?

A: Yes. Both parts are identical Analog Devices AD7477 devices with the same electrical specifications. The suffix designations indicate different packaging and reel configurations (500-piece reel versus standard reel format). Selection between these variants depends on supply chain and inventory requirements rather than electrical performance.

Q: What packaging considerations apply to these substitutes?

A: All four parts use SOT-23-6 surface mount package with identical mechanical dimensions and PCB footprint. Packaging format differences (Tape & Reel, Cut Tape, or Digi-Reel®) affect supply and handling but do not impact electrical performance or board assembly compatibility.

Q: Can I use AD7477 parts in applications requiring operation below 2.7V supply voltage?

A: No. AD7477 parts specify a minimum supply voltage of 2.7V for both analog and digital supplies. If your application requires operation at 2.35V to 2.7V, the ADS7887SDBVR or ADS7887SDBVT must be used, as these parts support the full 2.35V minimum specification.

Q: Are all substitute parts RoHS3 compliant?

A: Yes. All four parts—ADS7887SDBVR, ADS7887SDBVT, AD7477ARTZ-500RL7, and AD7477ARTZ-REEL7—carry ROHS3 compliance certification and REACH unaffected status, meeting current environmental and regulatory requirements.