Texas Instruments ADC12C170HFEB/NOPB

Overview

ADC12C170HFEB/NOPB from Texas Instruments (formerly National Semiconductor) is a high-frequency evaluation board designed specifically for the ADC12C170 - a 12-bit, 170 MSPS analog-to-digital converter optimized for analog input frequencies exceeding 150 MHz. It features an optimized analog input network with balun transformer ETC1-1-13, on-board clock buffer (NC7WV125K8X), and FutureBus connector for 12-bit parallel data capture.

For engineers reviewing the ADC12C170HFEB/NOPB datasheet, ADC12C170HFEB/NOPB pinout, ADC12C170HFEB/NOPB application, or ADC12C170HFEB/NOPB equivalent, this board enables rapid performance validation of the ADC12C170 under high-frequency signal conditions, supports configurable clock mode (single-ended/differential) and output format (2's complement/offset binary), and integrates PLD-based level translation for 3.3V logic compatibility.

Technical Context

The ADC12C170HFEB/NOPB implements a dedicated high-frequency analog input path using two ETC1-1-13 balun transformers to support differential signal coupling above 150 MHz. Its clock input path includes a TinyLogic ULP-A buffer (U2) to sharpen edge transitions and reduce jitter-induced SNR degradation.

On-board power regulation uses dual National Semiconductor LDOs: one 3.3V regulator (U1/U4) for PLD and interface logic, and one 1.8V regulator (U3) for ADC core supply. The PLD (Lattice ispMACH LC4032V-25TN48C) provides configurable data latching synchronized to DRDY and selectable DRDY edge polarity via MODE/INV jumpers.

Key Specifications

Availability

ADC12C170HFEB/NOPB is available at Aetrix Electronics and suitable for high-speed data acquisition, RF receiver testing, and wideband communications system development requiring stable component supply and validated reference design support.

Supply support for ADC12C170HFEB/NOPB 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

Texas Instruments (TI) acquired National Semiconductor in 2011 and maintains its precision data converter portfolio, including high-speed ADCs and supporting evaluation platforms.

The ADC12C170HFEB/NOPB belongs to TI's high-speed ADC evaluation board family, engineered to accelerate characterization and integration of 12-bit, 170 MSPS converters in demanding RF and instrumentation applications.

FAQ

What is the primary function of the ADC12C170HFEB/NOPB?

The ADC12C170HFEB/NOPB is a dedicated evaluation board for the ADC12C170 analog-to-digital converter, configured specifically for analog input frequencies above 150 MHz. It provides a complete signal chain - including optimized balun-based analog input, low-jitter clock conditioning, regulated power delivery, and 3.3V-compatible digital output interface - enabling accurate performance validation of the ADC12C170 in high-frequency applications without custom PCB design.

How does the ADC12C170HFEB/NOPB differ from the ADC12C170LFEB version?

The ADC12C170HFEB/NOPB uses two ETC1-1-13 balun transformers and a high-frequency analog input network optimized for signals above 150 MHz, whereas the LFEB version employs a single ADT1-1WT+ transformer and passive network tuned for frequencies below 150 MHz. Component-level differences include distinct capacitor values (e.g., C74 = 2 pF on HFEB vs. 15 pF on LFEB) and layout-specific impedance control - making the ADC12C170HFEB/NOPB unsuitable for sub-150 MHz evaluation without hardware modification.

Which clock sources are recommended for use with the ADC12C170HFEB/NOPB?

A low-jitter crystal oscillator or sinusoidal signal generator (e.g., HP8644B) with total additive jitter under 150 fs is recommended for the ADC12C170HFEB/NOPB. The board includes a NC7WV125K8X buffer to sharpen clock edges, and insertion of a tunable bandpass filter (e.g., Trilithic) between source and CLK_IN_SE SMA connector further improves SNR - consistent with measurement conditions used in the ADC12C170 datasheet.

Can the ADC12C170HFEB/NOPB be used with the WaveVision 4.0 Digital Interface Board?

Yes - the ADC12C170HFEB/NOPB is fully compatible with the WaveVision 4.0 Digital Interface Board via its FutureBus connector (FB). When used together, the combined system requires +5 V at 1.0 A. The on-board Lattice PLD (U5) translates ADC12C170 outputs to 3.3V CMOS levels, ensuring direct electrical compatibility with WaveVision 4.0, and the DRDY/OVR signals are routed to designated pins (D2 and B18) for synchronized data capture.

What configuration jumpers control data formatting and latching behavior on the ADC12C170HFEB/NOPB?

The CLK_SEL/DF jumper (2×4 header) configures both clock mode (single-ended or differential) and output data format (2's complement or offset binary); factory default is pins 7–8 shorted for single-ended clock with offset binary output. The MODE and INV jumpers control PLD data latching: MODE shorted enables latching on DRDY, and INV shorted selects falling-edge capture - allowing precise synchronization of 12-bit parallel data reads from the ADC12C170HFEB/NOPB.