HI7191IBZ Equivalent & Substitute Parts

Part Overview

The HI7191IBZ is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Renesas Electronics Corporation, designed for precision data acquisition applications. This single-input differential ADC operates with external reference and integrated programmable gain amplifier (PGA) functionality, housed in a 20-SOIC surface mount package. The device is currently in active production status with 1517 units available in new original inventory. Substitute parts are identified when equivalent electrical and mechanical parameters align with the original specification, enabling seamless integration in existing designs or when primary component availability is constrained.

Substiute Parts

HI7191IBZ

Renesas Electronics CorporationIn Stock: 1601HI7191IBZ Datasheet

Current PartRFQ

HI7190IBZ

Renesas Electronics CorporationIn Stock: 1321HI7190IBZ Datasheet

Parametric EquivalentRFQ

Key Parameters

Substitute Part Grouping Explanation

The HI7190IBZ qualifies as a parametric equivalent to the HI7191IBZ based on strict alignment of critical electrical and mechanical specifications. Substitution eligibility is determined by the following parameters:

• 24-bit resolution matching
• 625 samples per second sampling rate matching
• Single differential input configuration matching
• SPI data interface matching
• Sigma-Delta architecture matching
• ±5V analog and 5V digital supply voltage matching
• External reference type matching
• Integrated PGA feature matching
• 20-SOIC package and surface mount configuration matching
• Operating temperature range -40°C to 85°C matching
• RoHS3 compliance and MSL 3 rating matching

All listed parameters must align for substitution validity. No parameter deviation is permitted.

Parameter Comparison

Engineering Selection Recommendations

Both the HI7191IBZ and HI7190IBZ maintain active production status with full RoHS3 compliance and identical MSL 3 ratings. Selection between these parts is based on inventory availability and supply chain considerations. The HI7191IBZ currently maintains 1517 units in stock, while the HI7190IBZ maintains 1248 units. Both devices carry REACH Unaffected status and EAR99 export classification. No technical performance differentiation exists between these components based on provided specifications. Component selection should prioritize availability and lead time requirements for the specific application timeline.

Frequently Asked Questions (FAQ)

Q: Can HI7190IBZ replace HI7191IBZ in existing designs?

A: Yes. All electrical parameters, package configuration, and operating specifications are identical. Direct substitution is valid without design modification.

Q: Are there any package differences between these parts?

A: No. Both devices use identical 20-SOIC packaging with 0.295" width (7.50mm). PCB footprints and land patterns are interchangeable.

Q: Do supply voltage requirements differ between these components?

A: No. Both require ±5V analog supply and 5V digital supply. Power distribution and decoupling networks require no modification.

Q: Is the SPI interface protocol identical?

A: Yes. Both devices implement identical SPI data interface specifications. Firmware and driver code require no changes.

Q: What is the basis for substitution eligibility?

A: Substitution is based on complete parameter alignment across resolution, sampling rate, input configuration, supply voltages, package type, and compliance certifications. All parameters must match exactly.

Q: Are there temperature range limitations for either part?

A: No. Both devices operate identically across the -40°C to 85°C temperature range with no performance differentiation.

Q: Do moisture sensitivity levels affect handling procedures?

A: Both parts carry MSL 3 rating with 168-hour floor life. Identical moisture control and storage procedures apply to both components.