PCM1717E Equivalent & Substitute Parts

Part Overview

The PCM1717E is an 18-bit audio DAC manufactured by Texas Instruments, designed for audio data acquisition applications with I2S interface support. The device operates across a 2.7V to 5.5V supply range and features three output channels with a 48 kHz sampling rate. The PCM1717E is classified as obsolete, making identification of functionally equivalent alternatives necessary for ongoing system design and component procurement.

Substiute Parts

PCM1717E

Texas InstrumentsIn Stock: 18416PCM1717E Datasheet

Current PartRFQ

PCM1754DBQ

Texas InstrumentsIn Stock: 91489PCM1754DBQ Datasheet

MFR RecommendedRFQ

PCM5102APWR

Texas InstrumentsIn Stock: 25174PCM5102APWR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitution of the PCM1717E is determined by compatibility across the following critical parameters: audio DAC functionality, data interface protocol, resolution and sampling rate capabilities, supply voltage compatibility, operating temperature range, and surface mount packaging. The substitute parts listed below maintain core audio DAC functionality while accommodating variations in channel count, resolution, sampling rate, and package form factor.

PCM1754DBQ serves as a manufacturer-recommended substitute with enhanced specifications: 24-bit resolution and 200 kHz sampling rate capability, though limited to 2 channels and requiring a fixed 5V single supply. The package transitions from 20-SSOP to 16-SSOP form factor.

PCM5102APWR provides an alternative with extended performance: 16/24/32-bit resolution flexibility and 384 kHz sampling rate, operating from a lower voltage range (1.65V ~ 3.46V) with 2 channels and PCM interface protocol. The package is 20-TSSOP form factor.

Parameter Comparison

Engineering Selection Recommendations

Both substitute parts are active products with ROHS3 compliance and unlimited moisture sensitivity ratings, ensuring regulatory alignment and long-term availability compared to the obsolete PCM1717E.

PCM1754DBQ is the manufacturer-recommended substitute when system design permits operation at fixed 5V supply and can accommodate reduction from 3 channels to 2 channels. The enhanced 24-bit resolution and 200 kHz sampling rate provide performance headroom for audio applications. The smaller 16-SSOP package reduces PCB footprint.

PCM5102APWR is suitable when lower supply voltage operation (1.65V ~ 3.46V) is required or when extended sampling rate capability (384 kHz) is beneficial. The flexible resolution support (16/24/32-bit) accommodates multiple audio standards. The PCM interface differs from the I2S protocol of the original part, requiring interface protocol verification during integration.

Frequently Asked Questions (FAQ)

Q: Can PCM1754DBQ directly replace PCM1717E in existing designs?

A: Direct replacement requires design verification. The PCM1754DBQ operates at fixed 5V (versus PCM1717E's 2.7V ~ 5.5V range), supports 2 channels instead of 3, and uses a smaller 16-SSOP package. I2S interface compatibility is maintained. PCB layout modifications may be necessary due to package size reduction.

Q: What is the primary difference between PCM1754DBQ and PCM5102APWR?

A: PCM1754DBQ maintains I2S interface protocol with 24-bit/200 kHz capability and requires 5V supply. PCM5102APWR uses PCM interface protocol, supports 16/24/32-bit resolution with 384 kHz sampling rate, and operates from 1.65V ~ 3.46V supply. Interface protocol selection depends on system architecture requirements.

Q: Is channel count reduction from 3 to 2 a limiting factor?

A: Channel count reduction is application-dependent. Systems requiring all 3 channels of the PCM1717E cannot use either substitute without external channel expansion circuitry. Verify channel requirements in the target application before selection.

Q: Are package form factor changes critical for PCB redesign?

A: Package transitions from 20-SSOP to 16-SSOP (PCM1754DBQ) or 20-TSSOP (PCM5102APWR) require PCB layout modifications. Pin pitch and footprint differences necessitate design review. Both alternatives maintain surface mount compatibility.

Q: Do both substitutes support the same operating temperature range?

A: PCM1754DBQ extends the lower temperature limit to -40°C compared to PCM1717E's -25°C. PCM5102APWR maintains -25°C ~ 85°C range. Temperature specification verification is required for applications operating below -25°C.