ADS5522IPAPR Equivalent & Substitute Parts

Part Overview

The ADS5522IPAPR is a 12-bit pipelined analog-to-digital converter manufactured by Texas Instruments, designed for single-channel differential input data acquisition applications. This device operates at an 80 MHz sampling rate with internal voltage reference and is housed in a 64-HTQFP surface mount package. The product is classified as obsolete, making identification of functionally compatible alternatives essential for ongoing system support and new design implementations.

Substiute Parts

ADS5522IPAPR

Texas InstrumentsIn Stock: 1772ADS5522IPAPR Datasheet

Current PartRFQ

AD6645ASVZ-80

Analog Devices Inc.In Stock: 1784AD6645ASVZ-80 Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution eligibility for the ADS5522IPAPR is determined by the following critical parameters:

• Sampling Rate: 80 MHz (exact match required for timing-critical applications)
• Architecture: Pipelined ADC topology
• Input Configuration: Single differential input channel
• Data Interface: Parallel output
• Operating Temperature Range: -40°C to 85°C minimum
• Supply Voltage Compatibility: Analog and digital supply ranges must support system requirements

The AD6645ASVZ-80 qualifies as a substitute based on matching sampling rate, pipelined architecture, single differential input, parallel interface, and identical operating temperature range. Differences in resolution (14-bit versus 12-bit), package form factor (52-TQFP-EP versus 64-HTQFP), and analog supply voltage (5V versus 3V-3.6V) must be evaluated within the context of specific application requirements.

Parameter Comparison

Engineering Selection Recommendations

The AD6645ASVZ-80 is an active product with current manufacturing support, addressing the obsolescence status of the ADS5522IPAPR. Both devices maintain ROHS3 compliance and identical operating temperature specifications. The AD6645ASVZ-80 provides enhanced resolution at 14-bit versus 12-bit, maintaining the critical 80 MHz sampling rate and pipelined architecture required for equivalent functional performance.

Design considerations include analog supply voltage requirements: the ADS5522IPAPR operates from 3V to 3.6V, while the AD6645ASVZ-80 requires 5V analog supply. Digital supply voltage ranges are compatible (3V to 3.6V). Package footprint differs between the 64-HTQFP and 52-TQFP-EP, requiring PCB layout evaluation. The increased bit resolution of the substitute part provides improved signal fidelity without compromising sampling rate performance.

Frequently Asked Questions (FAQ)

Q: Can the AD6645ASVZ-80 directly replace the ADS5522IPAPR in existing designs?

A: Direct replacement requires evaluation of three factors: (1) analog supply voltage availability at 5V for the substitute part, (2) PCB layout accommodation of the different package footprint (52-TQFP-EP versus 64-HTQFP), and (3) firmware or signal processing compatibility with the increased 14-bit resolution output. The parallel data interface and 80 MHz sampling rate are functionally equivalent.

Q: What are the key differences between these two parts?

A: The primary differences are resolution (12-bit versus 14-bit), analog supply voltage (3V-3.6V versus 5V), and package form factor (64-HTQFP versus 52-TQFP-EP). Both devices share identical sampling rate, pipelined architecture, single differential input configuration, and operating temperature range.

Q: Is the higher resolution of the AD6645ASVZ-80 compatible with systems designed for 12-bit output?

A: The 14-bit output of the AD6645ASVZ-80 is backward compatible with 12-bit system designs. The lower 12 bits of the 14-bit output can be utilized directly, or the full 14-bit resolution can be leveraged for improved signal-to-noise ratio depending on application requirements.

Q: What compliance certifications apply to both parts?

A: Both the ADS5522IPAPR and AD6645ASVZ-80 are ROHS3 compliant and REACH unaffected, meeting current environmental and regulatory standards for electronic components.

Q: Are there package-related considerations for PCB redesign?

A: Yes. The ADS5522IPAPR uses a 64-pin HTQFP package, while the AD6645ASVZ-80 uses a 52-pin TQFP with exposed pad. Pin count and footprint differ, requiring PCB layout modification and signal routing verification during substitution.