MAX7645BCPP 12-Bit Digital to Analog Converter Equivalent & Substitute Parts

Part Overview

The MAX7645BCPP is a 12-bit digital to analog converter (DAC) manufactured by Analog Devices Inc./Maxim Integrated, housed in a 20-DIP package for through-hole mounting. This component is classified as obsolete, necessitating identification of active equivalent parts for ongoing design support and procurement. The MAX7645BCPP provides current output through an R-2R architecture with external reference capability, operating across ±1 LSB INL/DNL specifications. Substitute parts must maintain functional compatibility in parallel data interface applications requiring 12-bit resolution and current-output DAC topology.

Substiute Parts

MAX7645BCPP

Analog Devices Inc./Maxim IntegratedIn Stock: 1084MAX7645BCPP Datasheet

Current PartRFQ

MAX7645BCPP+

Analog Devices Inc./Maxim IntegratedIn Stock: 3157MAX7645BCPP+ Datasheet

DirectRFQ

AD7545GLNZ

Analog Devices Inc.In Stock: 1233AD7545GLNZ Datasheet

MFR RecommendedRFQ

AD7545JNZ

Analog Devices Inc.In Stock: 2111AD7545JNZ Datasheet

MFR RecommendedRFQ

AD7545KNZ

Analog Devices Inc.In Stock: 975AD7545KNZ Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the MAX7645BCPP is determined by the following critical parameters: 12-bit resolution, single DAC channel, current-output unbuffered topology, parallel data interface, external reference requirement, R-2R architecture, and 20-DIP through-hole package. All substitute parts must maintain these core functional attributes.

The substitute parts are grouped into two categories:

Direct Manufacturer Variant: MAX7645BCPP+ represents an active production variant of the base MAX7645 series, maintaining identical electrical specifications and package configuration.

Manufacturer-Recommended Alternatives: AD7545GLNZ, AD7545JNZ, and AD7545KNZ are Analog Devices 12-bit DACs sharing the same package, resolution, architecture, and parallel interface. These parts operate across a wider supply voltage range (5V ~ 15V) compared to the original part's fixed 14.25V ~ 15.75V specification, providing greater design flexibility while maintaining core functional compatibility.

Parameter Comparison

Engineering Selection Recommendations

MAX7645BCPP+ is the direct active equivalent, maintaining identical electrical performance and supply voltage specifications. This part is recommended for designs requiring exact parameter matching and is currently in active production status.

AD7545GLNZ offers the tightest linearity specification (±0.5 LSB INL) among the AD7545 variants, suitable for applications demanding superior accuracy. The wider supply voltage range (5V ~ 15V) accommodates diverse power distribution architectures.

AD7545KNZ matches the original MAX7645BCPP INL/DNL specifications (±1 LSB) while providing the supply voltage flexibility of the AD7545 family. This part represents a balanced alternative for applications where the original specifications are sufficient.

AD7545JNZ exhibits relaxed linearity specifications (±2 LSB INL, ±4 LSB DNL) and is suitable only for applications with less stringent accuracy requirements. Selection of this part requires explicit confirmation that the reduced linearity performance is acceptable for the target application.

All substitute parts are ROHS3 compliant and carry identical moisture sensitivity and REACH compliance status as the original component.

Frequently Asked Questions (FAQ)

Q: Can MAX7645BCPP+ be used as a direct replacement for MAX7645BCPP?

A: Yes. MAX7645BCPP+ is an active production variant of the same base product series, maintaining identical electrical specifications, package configuration, and performance characteristics. Pin-for-pin compatibility is assured.

Q: What is the primary advantage of AD7545 series substitutes over MAX7645BCPP+?

A: The AD7545 family operates across a wider supply voltage range (5V ~ 15V) compared to the MAX7645BCPP fixed range (14.25V ~ 15.75V). This flexibility enables integration into systems with different power supply architectures without requiring additional voltage regulation.

Q: Are there settling time differences between the original part and substitutes?

A: Yes. The MAX7645BCPP specifies 1µs settling time, while all AD7545 variants specify 2µs. Applications with timing-critical signal acquisition may require circuit-level analysis to confirm compatibility.

Q: Which AD7545 variant should be selected for highest accuracy?

A: AD7545GLNZ provides the tightest linearity specification at ±0.5 LSB INL, compared to ±1 LSB for AD7545KNZ and ±2 LSB for AD7545JNZ. Selection depends on the accuracy requirements of the target application.

Q: Are all substitute parts available in the same 20-DIP through-hole package?

A: Yes. All listed substitute parts are packaged in 20-DIP (0.300", 7.62mm) through-hole configuration, ensuring mechanical and electrical compatibility with existing PCB layouts.

Q: Do substitute parts maintain the same compliance certifications?

A: Yes. All substitute parts are ROHS3 compliant with identical moisture sensitivity level (MSL 1 - Unlimited) and REACH compliance status as the original MAX7645BCPP.