PCM1702P-JG4 Equivalent & Substitute Parts

Part Overview

The PCM1702P-JG4 is a 20-bit audio digital-to-analog converter (DAC) manufactured by Texas Instruments, designed for serial audio applications with a 44.1 kHz sampling rate. This component operates with dual ±5V supply and is packaged in a 16-pin DIP configuration for through-hole mounting.

The PCM1702P-JG4 is classified as obsolete. Locating equivalent or substitute components is necessary for new designs, production continuity, and system upgrades where this part is no longer readily available or preferred for modern applications.

Substiute Parts

PCM1702P-JG4

Texas InstrumentsIn Stock: 739PCM1702P-JG4 Datasheet

Current PartRFQ

PCM1795DB

Texas InstrumentsIn Stock: 2193PCM1795DB Datasheet

MFR RecommendedRFQ

PCM1795DBR

Texas InstrumentsIn Stock: 15616PCM1795DBR Datasheet

MFR RecommendedRFQ

Key Parameters

Substitute Part Grouping Explanation

Substitute parts for the PCM1702P-JG4 are identified based on functional equivalence within the audio DAC category. The primary substitutes are the PCM1795DB and PCM1795DBR, both from Texas Instruments.

The substitution logic is based on the following criteria:

• Functional Category: Both substitute parts are audio DACs from the same manufacturer
• Channel Configuration: All parts provide 2-channel audio output
• Operating Temperature Range: Identical range (-25°C to 85°C) ensures thermal compatibility
• Compliance Standards: All parts maintain ROHS3 compliance and REACH unaffected status
• Supply Voltage Compatibility: Substitute parts support 5V operation, compatible with existing ±5V dual supply systems
• Data Interface: Substitute parts support PCM interface, compatible with serial audio protocols

The PCM1795 series represents an enhanced alternative with higher resolution (32 bits) and sampling rate (200 kHz), offering improved performance for modern audio applications while maintaining core compatibility parameters.

Parameter Comparison

Engineering Selection Recommendations

Product Status Consideration: The PCM1702P-JG4 is obsolete, while both PCM1795DB and PCM1795DBR are active products with current manufacturing support. Selection of an active substitute ensures long-term availability and supply chain stability.

Compliance and Certification: All three parts maintain identical compliance certifications: ROHS3 compliant, REACH unaffected, and MSL Level 1. This ensures regulatory equivalence across all options.

Packaging and Mounting: The primary design consideration is the transition from through-hole (16-DIP) to surface-mount (28-SSOP) technology. This requires PCB redesign and assembly process changes. Both substitute parts are functionally identical in this regard.

Supply Voltage: The substitute parts support 5V operation within their specified range (3V ~ 3.6V, 5V), maintaining compatibility with existing ±5V dual supply systems. The analog and digital supply architecture of the PCM1795 series provides enhanced power distribution flexibility.

Performance Enhancement: The PCM1795 series offers higher resolution (32 bits vs. 20 bits) and sampling rate (200 kHz vs. 44.1 kHz), providing performance headroom for modern audio applications.

Frequently Asked Questions (FAQ)

Q: Can PCM1795DB and PCM1795DBR be used interchangeably?

A: Yes. Both parts are functionally identical audio DACs with the same electrical specifications, resolution, sampling rate, and package. The difference is packaging format: PCM1795DB is supplied in tubes, while PCM1795DBR is supplied in cut tape and digi-reel format. Selection depends on procurement and assembly requirements.

Q: What is the primary difference between PCM1702P-JG4 and the substitute parts?

A: The main differences are product status (obsolete vs. active), resolution (20 bits vs. 32 bits), sampling rate (44.1 kHz vs. 200 kHz), and package type (through-hole DIP vs. surface-mount SSOP). All parts maintain identical operating temperature range and compliance certifications.

Q: Does the package change from DIP to SSOP affect compatibility?

A: Yes. The transition from 16-pin through-hole DIP to 28-pin surface-mount SSOP requires PCB redesign, different footprints, and modified assembly processes. Pin count and pinout differ between the two packages.

Q: Are the supply voltage requirements compatible?

A: The PCM1702P-JG4 requires ±5V dual supply. The PCM1795 series supports 3V ~ 3.6V and 5V operation with separate analog and digital supplies. Existing ±5V systems can supply the 5V requirement, but the supply architecture differs and may require circuit modifications.

Q: What is the inventory status of these parts?

A: PCM1702P-JG4 has 674 units in stock (obsolete status). PCM1795DB has 2,100 units available. PCM1795DBR has 15,599 units available, providing the highest supply availability.