Texas Instruments ADC08100EVAL

Overview

ADC08100EVAL from National Semiconductor is an evaluation board designed to accelerate prototyping and performance validation of the ADC08100 - an 8-bit, 100 MSPS analog-to-digital converter with 7.4 ENOB at 41 MHz, single +3V supply operation, and 1.3 mW/MSPS power efficiency. It supports full characterization of dynamic performance (SFDR, SINAD, THD), reference ladder configuration (VRT/VRB/VRM), and power-down mode verification in imaging and communications signal chains.

For engineers reviewing the ADC08100EVAL datasheet, ADC08100EVAL pinout, ADC08100EVAL application, or ADC08100EVAL equivalent, this board enables rapid assessment of ADC08100 timing behavior (aperture jitter <2 ps rms, pipeline latency = 2.5 cycles), TTL/CMOS-compatible digital interface (D0–D7, CLK, PD), and analog input conditioning for flat-panel displays, medical scan converters, and high-speed Viterbi decoders.

Technical Context

The ADC08100EVAL implements a complete test platform for the ADC08100 IC, including precision clock distribution (100 MHz CMOS/TTL input), configurable reference ladder biasing (VRT, VRB, VRM), and isolated analog/digital power domains (VA = +3V, DR VD = +2.4V to +3.6V). It provides direct access to all 24 TSSOP pins via test points and headers.

Board-level design supports full compliance with ADC08100's electrical requirements: 0.1 µF ceramic + 10 µF bulk bypassing per supply rail, 18–47 Ω RC filtering on VIN path for SNR optimization, and strict ground separation between AGND, DR GND, and VIN GND to maintain <2 ps rms aperture jitter and −60 dBc THD at 41 MHz.

Key Specifications

Availability

ADC08100EVAL is available at Aetrix Electronics and suitable for flat-panel display development, medical imaging system integration, set-top box signal chain validation, and battery-powered instrument prototyping requiring stable component supply and documented evaluation infrastructure.

Supply support for ADC08100EVAL 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. Its legacy products remain widely deployed in industrial, medical, and communications systems.

The ADC08100EVAL belongs to National Semiconductor's high-speed data acquisition evaluation platform family, engineered specifically to de-risk adoption of the ADC08100 in bandwidth-critical applications such as X-ray imaging and astronomy front-ends where ENOB ≥7.3 bits at 41 MHz must be verified under real-world layout and supply conditions.

FAQ

What is the primary function of the ADC08100EVAL evaluation board?

The ADC08100EVAL evaluation board is a dedicated hardware platform for evaluating the ADC08100 8-bit, 100 MSPS analog-to-digital converter. It provides full access to all 24 pins of the ADC08100 TSSOP package, implements proper power sequencing and decoupling per DS101371, and enables measurement of key dynamic parameters including ENOB, SFDR, and THD across its 20–100 MSPS operating range. The board is not a standalone converter but a validated test fixture for the ADC08100.

Does ADC08100EVAL support both single-ended and differential input configurations?

No - the ADC08100EVAL supports only the single-ended input architecture of the ADC08100 IC, as specified in the device's datasheet. The board routes VIN to a single SMA connector with appropriate RC filtering and provides independent access to VRT, VRB, and VRM for reference ladder configuration. Differential input is not supported because the ADC08100 itself is a single-ended-input converter with no internal differential front-end or complementary input pins.

Can ADC08100EVAL be used to verify the ADC08100's power-down mode functionality?

Yes - ADC08100EVAL includes a dedicated header for the PD (Power Down) pin, allowing direct control of the ADC08100's low-power state. When PD is driven high, the board confirms the ADC08100 enters 1 mW power-down mode while holding the last valid conversion result on D0–D7 outputs. This functionality is validated using the board's test points and matches the timing specification of <1 µs recovery upon PD deassertion per DS101371 Section 4.1.

What clock source requirements must be met when using ADC08100EVAL?

ADC08100EVAL requires a CMOS/TTL-compatible clock input with 50% ±15% duty cycle, minimum high/low times of 4.5 ns each, and frequency range 20–125 MHz. The board accepts clock signals via SMA connector and includes series termination options to match characteristic impedance. For 100 MHz operation, clock rise/fall times must be ≤2 ns to meet tCL/tCH specifications and preserve aperture jitter <2 ps rms as guaranteed in the ADC08100 datasheet.

Is ADC08100EVAL compatible with modern 3.3V or 2.5V logic families?

Yes - ADC08100EVAL supports interoperability with 2.5V and 3.3V logic through its configurable DR VD supply pin, which powers the D0–D7 digital outputs. The board allows DR VD to be set independently from VA (analog supply), enabling clean interfacing to 2.5V FPGA I/O banks or 3.3V microcontroller inputs without external level shifters - consistent with ADC08100's VOH ≥2.4V and VOL ≤0.5V specifications at IOH = −400 µA and IOL = 1.0 mA.