Texas Instruments ADC1175-50EVM

Overview

ADC1175-50EVM from Texas Instruments is an evaluation module designed exclusively for the ADC1175-50 8-bit, 50 MSPS analog-to-digital converter. It provides a complete, ready-to-use hardware platform with onboard clock generation, programmable LDO voltage regulation, level-shifting CMOS output buffer, and configurable analog input path - enabling rapid performance validation of dynamic parameters including SNR (44 dBFS) and SFDR (51 dBFS) at full sample rate.

For engineers reviewing the ADC1175-50EVM datasheet, ADC1175-50EVM pinout, ADC1175-50EVM application, or ADC1175-50EVM equivalent, this EVM supports direct integration with TI's TSW1400EVM data capture board, requires Windows-based HSDC Pro software, and delivers validated quick-start measurements using a 5-MHz band-pass filtered +10 dBm analog input signal with JP11 shunted to positions 1–2.

Technical Context

The ADC1175-50EVM implements a dedicated hardware interface for the ADC1175-50 IC, featuring a user-selectable 20-MHz onboard crystal oscillator (JP2 = 1–2) or external 20-MHz clock input (JP2 = 2–3), and supports coherent sampling via frequency-locked clock/analog sources. Its analog front-end includes an OPA830 op amp configured for 1.6-V DC offset and reference voltages of 2.6 V (VRT) and 0.6 V (VRB) when JP6 and JP9 are shunted 2–3.

Jumper JP11 (shunt 1–2) configures the input data voltage level specifically for ADC1175-50EVM operation, while JP10 (2–3) enables the CMOS output data buffer. The module interfaces to the TSW1400EVM via a 20-pin CMOS_INTERFACE header (J1), supporting direct connection of all 8 data bits, clock, and control signals without level translation.

Key Specifications

Availability

ADC1175-50EVM is available at Aetrix Electronics and suitable for high-speed data converter evaluation, RF receiver prototyping, and mixed-signal test system development requiring stable component supply and TI-validated reference designs.

Supply support for ADC1175-50EVM 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 is a global semiconductor company delivering analog and embedded processing solutions, with leadership in data converters, power management, and interface technologies.

The ADC1175-50EVM belongs to TI's high-speed ADC evaluation module family, engineered to accelerate characterization and system integration of low-power, medium-speed ADCs in communications, instrumentation, and digital receiver applications.

FAQ

What is the primary function of the ADC1175-50EVM?

The ADC1175-50EVM is a dedicated evaluation module for the ADC1175-50 analog-to-digital converter. It provides a complete test platform-including clocking, analog input conditioning, voltage regulation, and CMOS output buffering-to validate dynamic performance metrics such as SNR and SFDR at 50 MSPS. The ADC1175-50EVM is not a standalone product but a TI-qualified hardware tool for design-in verification and system-level testing of the ADC1175-50 IC.

Which software and host hardware are required to operate the ADC1175-50EVM?

The ADC1175-50EVM requires Texas Instruments' High-Speed Data Converter Pro (HSDC Pro) software running on a Windows PC (XP or later), along with the TSW1400EVM data capture board. The ADC1175-50EVM connects directly to the TSW1400EVM via its CMOS_INTERFACE header (J1), and firmware selection must be set to "ADC1175-50_cmos" within HSDC Pro to ensure correct timing, register mapping, and analysis settings for the ADC1175-50EVM configuration.

How is the input voltage level configured on the ADC1175-50EVM?

The input data voltage level on the ADC1175-50EVM is configured using jumper JP11: shunting pins 1–2 selects the setting specific to the ADC1175-50 variant, as documented in Table 5 of the SNAU224 User's Guide. This jumper ensures proper logic-level alignment between the ADC1175-50's CMOS outputs and the TSW1400EVM's input receivers. Leaving JP11 unshunted or in any other position invalidates the ADC1175-50EVM's operational configuration.

What are the key hardware dependencies for achieving the published 44 dBFS SNR on the ADC1175-50EVM?

Achieving the published 44 dBFS SNR on the ADC1175-50EVM requires strict adherence to the quick-start setup: a +10 dBm, 5-MHz analog input signal passed through a ≥60-dB harmonic attenuation band-pass filter, applied to J6; JP11 shunted 1–2; JP2 shunted 1–2 for internal 20-MHz clock; and use of the HSDC Pro "ADC1175-50_cmos" firmware with "50M" entered in the ADC Output Data Rate field. Deviations-such as incorrect filter bandwidth, excessive input amplitude (> –1 dBFS), or mismatched firmware-degrade measured SNR.

Can the ADC1175-50EVM be used with external clock sources, and how is that configured?

Yes, the ADC1175-50EVM supports external clocking: shunt JP2 to positions 2–3 and remove the jumper from JP7 to disable the onboard oscillator. Then apply a clean 20-MHz, 1-dBm clock signal to connector J3. The external source must exhibit low phase noise (< 500 fs jitter, 20 kHz–20 MHz offset) to maintain the ADC1175-50EVM's specified dynamic performance. Clock coherence with the analog input source is recommended for optimal SNR, and narrow-band filtering of the external clock is advised per Section 3.1 of SNAU224.