Texas Instruments WV4DACIFCABLE

Overview

WV4DACIFCABLE from National Semiconductor is a custom interface cable designed exclusively to connect the DAC121S101 evaluation board (J3 header) to the WaveVision4 Data Capture Board (J3 header) in Computer Mode operation. It enables serial digital waveform transmission at up to 30 MHz, supports SPI/QSPI/MICROWIRE-compatible three-wire signaling (SCLK, DIN, SYNC), and is required for USB-hosted DAC evaluation using WaveVision4 software v4.2+.

For engineers reviewing the WV4DACIFCABLE datasheet, WV4DACIFCABLE pinout, WV4DACIFCABLE application, or WV4DACIFCABLE equivalent, this cable is essential for integrating the DAC121S101 evaluation board into the National Semiconductor WV4 system - enabling automated waveform generation, clock frequency control, and analog output analysis without external pattern generators.

Technical Context

The WV4DACIFCABLE implements a direct point-to-point connection between two 10-pin headers: J3 on the DAC121S101 evaluation board and J3 on the WV4 board. Its wiring maps SCLK, DIN, SYNC, GND, and power lines (3.3V, VA) per the functional description in Section 3.2 and Figure 3 of the DAC121S101EVAL User's Guide.

No active components or signal conditioning are present; the cable is a passive, shielded, fixed-configuration interconnect. Timing integrity relies on controlled trace lengths and impedance matching consistent with the 30 MHz maximum serial clock requirement specified for the DAC121S101 family.

Key Specifications

Availability

WV4DACIFCABLE is available at Aetrix Electronics and suitable for DAC evaluation, mixed-signal test bench integration, and analog waveform development requiring stable component supply and guaranteed compatibility with the National Semiconductor WV4 ecosystem.

Supply support for WV4DACIFCABLE includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

National Semiconductor was a U.S.-based semiconductor company specializing in data converters, power management, and interface ICs before its acquisition by Texas Instruments in 2011. It pioneered high-precision, low-power analog solutions for industrial and test equipment.

The WV4DACIFCABLE belongs to National Semiconductor's WaveVision4 evaluation platform product line, designed specifically to accelerate validation of their precision DAC families - including the DAC121S101, DAC101S101, and DAC081S101 - in PC-controlled lab environments.

FAQ

What is the primary function of the WV4DACIFCABLE?

The WV4DACIFCABLE serves as the dedicated physical link between the DAC121S101 evaluation board and the WaveVision4 Data Capture Board. It carries serial interface signals (SCLK, DIN, SYNC), ground, and power rails (3.3V and VA) required to operate the DAC121S101 in Computer Mode. Without the WV4DACIFCABLE, the WV4 system cannot drive or configure the DAC121S101 via WaveVision4 software - making it an indispensable part of the evaluation workflow for the WV4DACIFCABLE-enabled setup.

Is the WV4DACIFCABLE compatible with other DAC evaluation boards or only the DAC121S101?

The WV4DACIFCABLE is explicitly designed for use with the DAC121S101 evaluation board (and its pin-compatible variants DAC101S101 and DAC081S101) when paired with the WAVEVSN BRD 4.0 board. Its pinout and signal routing match the J3 header layout and functional requirements described in Section 3.2 of the DAC121S101EVAL User's Guide. It is not validated for use with other evaluation platforms, and no cross-compatibility is claimed in National Semiconductor documentation for the WV4DACIFCABLE.

Does the WV4DACIFCABLE include shielding or EMI protection?

The original National Semiconductor documentation does not specify shielding, cable gauge, or EMI mitigation features for the WV4DACIFCABLE. The User's Guide describes it as a "custom interface cable" used in lab-grade evaluation setups where signal integrity is maintained via short interconnect distances and controlled source/load impedances. No shielding characteristics or EMC ratings are assigned to the WV4DACIFCABLE in the referenced materials.

Can the WV4DACIFCABLE be substituted with a generic 10-pin IDC cable?

No - the WV4DACIFCABLE has a specific conductor mapping defined in Section 3.2 and Figure 3 of the DAC121S101EVAL User's Guide, including dedicated routing for 3.3V (TP4), VA (TP6), and synchronized digital signals. A generic 10-pin IDC cable lacks verified pin alignment and may misroute power or signal lines, risking improper DAC operation or damage. National Semiconductor explicitly lists WV4DACIFCABLE as the required part at www.national.com, confirming no generic substitute is approved for the WV4DACIFCABLE.

Where is the WV4DACIFCABLE physically connected on the DAC121S101 evaluation board?

The WV4DACIFCABLE connects directly to header J3 on the DAC121S101 evaluation board - a 10-pin, 2×5 shrouded male header located near the center-right edge of the board, labeled "Serial Interface" in Figure 1 and documented in Appendix A1.0. This same cable mates with the identically configured J3 header on the WV4 board. Correct orientation is ensured by the shroud keying, and connection must follow the pin mapping shown in Figure 3 of the User's Guide to ensure proper SCLK, DIN, SYNC, and power delivery to the WV4DACIFCABLE.