HI7191IPZ Equivalent & Substitute Parts

Part Overview

The HI7191IPZ is a 24-bit Sigma-Delta analog-to-digital converter manufactured by Renesas Electronics Corporation, designed for single-channel differential input data acquisition applications. The device features a programmable gain amplifier (PGA), external reference configuration, and SPI digital interface. The HI7191IPZ is classified as obsolete, making identification of active equivalent parts essential for new designs and ongoing system support.

Substiute Parts

HI7191IPZ

Renesas Electronics CorporationIn Stock: 1245HI7191IPZ Datasheet

Current PartRFQ

HI7191IBZ

Renesas Electronics CorporationIn Stock: 1601HI7191IBZ Datasheet

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Key Parameters

Substitute Part Grouping Explanation

Substitution of the HI7191IPZ is determined by equivalence across the following critical parameters: 24-bit resolution, 625 samples per second sampling rate, single differential input channel, SPI digital interface, Sigma-Delta architecture, ±5V analog supply, 5V digital supply, external reference configuration, and PGA functionality. The HI7191IBZ meets all functional and electrical specifications of the HI7191IPZ while maintaining identical performance characteristics. The primary distinction between these parts is packaging and product status: the HI7191IPZ uses through-hole 20-DIP packaging and is obsolete, while the HI7191IBZ uses surface-mount 20-SOIC packaging and maintains active product status.

Parameter Comparison

Engineering Selection Recommendations

The HI7191IBZ is the direct functional equivalent of the HI7191IPZ. Both devices are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory requirements. Selection between these parts depends on application-specific packaging and mounting requirements. For through-hole PCB designs, the HI7191IPZ remains available in inventory. For new designs or surface-mount applications, the HI7191IBZ is the recommended choice due to its active product status and continued manufacturing support from Renesas Electronics Corporation.

Frequently Asked Questions (FAQ)

Q: Can the HI7191IBZ directly replace the HI7191IPZ in existing designs?

A: Electrical and functional replacement is complete. The HI7191IBZ requires surface-mount PCB layout and assembly processes, whereas the HI7191IPZ uses through-hole mounting. PCB redesign is necessary for mechanical compatibility.

Q: What are the key differences between HI7191IPZ and HI7191IBZ?

A: The devices are electrically identical 24-bit Sigma-Delta ADCs with identical performance specifications. The HI7191IPZ uses 20-DIP through-hole packaging; the HI7191IBZ uses 20-SOIC surface-mount packaging. The HI7191IPZ is obsolete; the HI7191IBZ is active.

Q: Are both parts compliant with current environmental standards?

A: Yes. Both the HI7191IPZ and HI7191IBZ are ROHS3 compliant and REACH unaffected.

Q: What is the moisture sensitivity level difference between these parts?

A: The HI7191IPZ has MSL 1 (unlimited); the HI7191IBZ has MSL 3 (168 hours). This affects storage and handling requirements for the surface-mount variant.

Q: Which part should be selected for new product development?

A: The HI7191IBZ is recommended for new designs due to active product status and ongoing manufacturing support from Renesas Electronics Corporation.