Texas Instruments ADC10080EVAL

Overview

The ADC10080EVAL from National Semiconductor is an evaluation board designed specifically for the ADC10080 10-bit, 80 MSPS analog-to-digital converter, supporting manual and computer-based testing with WaveVision™ software, differential signal conditioning via transformer T1, and configurable input range (1.0–2.0 Vpp), data format (2's complement or offset binary), and standby mode.

For engineers reviewing the ADC10080EVAL datasheet, ADC10080EVAL pinout, ADC10080EVAL application, or ADC10080EVAL equivalent, this board enables dynamic performance validation-including SNR, SINAD, THD, and SFDR-via FFT analysis, coherent sampling setup, and clean signal injection through J1 BNC, with buffered digital output at J2 (96-pin Euro) and JP4.

Technical Context

The ADC10080EVAL implements a complete signal chain for evaluating high-speed ADCs: it accepts single-ended analog input at J1, converts it to differential using transformer T1 biased by VCOM, filters it with an R-C low-pass network (R1/R5/C9), and digitizes it using the onboard ADC10080 IC (U2). Power is distributed across four rails: VDDA (2.7–3.3 V), VDDIO (2.5–3.3 V), crystal/VCC buffer (2.7–3.3 V), and output buffer VCC (4.9–5.1 V).

Control is implemented via three user-configurable jumpers: JP1 selects input range (1.0/1.5/2.0 Vpp), JP2 sets data format (2's complement or offset binary), and JP3 enables/disables standby mode (13.5 mW vs full operation). Digital outputs are series-damped (R7–R17) and buffered by U3 (74ACTQ16244) for reliable transmission to logic analyzers or WaveVision™ interface boards.

Key Specifications

Availability

ADC10080EVAL is available at Aetrix Electronics and suitable for high-speed data acquisition system development, RF receiver prototyping, and test equipment design requiring stable component supply and validated ADC evaluation infrastructure.

Supply support for ADC10080EVAL 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 analog and mixed-signal ICs, acquired by Texas Instruments in 2011; known for precision data converters, power management, and interface solutions.

The ADC10080EVAL belongs to National's ADC10xxx evaluation platform family, designed explicitly to accelerate design-in of their 10-bit, 40–80 MSPS pipeline ADCs - emphasizing signal integrity, flexible configuration, and repeatable dynamic testing.

FAQ

What is the primary function of the ADC10080EVAL?

The ADC10080EVAL is an evaluation board built exclusively for the ADC10080 10-bit, 80 MSPS analog-to-digital converter. It provides signal conditioning, power regulation, jumper-configurable operating modes (standby/active, data format, input range), and buffered digital output interfaces - enabling engineers to validate dynamic performance metrics including SNR, SINAD, THD, and SFDR. The ADC10080EVAL does not contain or replace the ADC10080 IC; it hosts it as U2 on the board.

Which ADC models does the ADC10080EVAL support besides ADC10080?

The ADC10080EVAL supports the ADC10040 (40 MSPS) and ADC10065 (65 MSPS) in addition to the ADC10080, as confirmed in Section 1.0 of the User's Guide: "designed to ease evaluation and design-in of National's ADC10040, ADC10065, or ADC10080". All three share identical pinouts, control schemes, and power requirements, allowing the same board to evaluate all variants without hardware modification.

How is analog input configured on the ADC10080EVAL?

Analog input is applied via BNC connector J1 and conditioned through transformer T1 for single-ended-to-differential conversion, with common-mode voltage (VCOM) supplied by the ADC10080 itself. Input range is selected using jumper JP1: open (1.0 Vpp), pins 3&4 (1.5 Vpp), or pins 1&2 (2.0 Vpp). The User's Guide explicitly states that over-ranging degrades THD, so amplitude must match the JP1 setting.

What digital output options does the ADC10080EVAL provide?

The ADC10080EVAL provides parallel digital output at two locations: pins B4–B13 of J2 (96-pin Euro connector) and pins 10–19 of JP4 (10-pin header). Outputs are series-damped (R7–R17, 49.9 Ω) and buffered by U3 (74ACTQ16244) to drive cables or logic analyzers. Data format (2's complement or offset binary) is selected via JP2, and output voltage level is set by U3's VCC rail (4.9–5.1 V).

Can the ADC10080EVAL operate without a PC or WaveVision™ software?

Yes - the ADC10080EVAL supports Stand-Alone (manual) operation using external test equipment such as logic analyzers. In this mode, users configure JP1 (input range), ensure JP3 is open (to enable full operation), set JP2 for desired data format, apply proper power via JS1, inject signal at J1, and capture digitized output directly from J2 or JP4. No PC, USB, or WaveVision™ software is required for basic functionality or timing validation.