Analog Devices Inc. DC997B-E

Overview

DC997B-E from Analog Devices (formerly Linear Technology) is a high-speed ADC evaluation board configured with the LTC2241-10 10-bit, 210 MSPS analog-to-digital converter. It supports analog input frequencies from 10 MHz to 250 MHz, features LVDS digital outputs, and is optimized for RF receiver, communications test, and wideband instrumentation applications.

For engineers reviewing the DC997B-E datasheet, DC997B-E pinout, DC997B-E application, or DC997B-E equivalent, key selection considerations include its 10-bit resolution, 210 MSPS sampling rate, 1V_PP–2V_PP analog input range, LVDS output interface, and compatibility with the DC890B data acquisition system.

Technical Context

The DC997B-E implements a fixed-layout demonstration circuit for the LTC2241-10, featuring capacitor-coupled encode clock input with 50 Ω termination, transformer-balanced analog input network (ETC1-1-13 balun), and on-board 2.5 V LDO regulation derived from 3.3 V supply. Its jumper-configurable MODE (JP2), SHDN/OE (JP3), and SENSE (JP4) settings support multiple data formats and power states.

It delivers parallel LVDS data output on J2 connector pins [8–46, 56–70] (10-bit mode), with dedicated LVDS encode clock output on pins 50/52. The board requires external 3.3 V ±0.3 V supply delivering up to 500 mA and a low-jitter encode clock (0.2–2.5 V_P-P, sine or square).

Key Specifications

Availability

DC997B-E is available at Aetrix Electronics and suitable for RF receiver design, high-speed test instrumentation, and communications signal analysis requiring stable component supply and validated reference performance.

Supply support for DC997B-E 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

Analog Devices, Inc. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving precision, industrial, automotive, and communications markets.

The DC997B-E belongs to ADI's high-speed data conversion demonstration platform family, designed specifically to accelerate evaluation and prototyping of ultra-high-speed ADCs in demanding RF and wideband applications.

FAQ

What ADC is installed on the DC997B-E evaluation board?

The DC997B-E evaluation board is factory-configured with the LTC2241-10 - a 10-bit, 210 MSPS high-speed analog-to-digital converter from Analog Devices. This specific ADC variant defines the board's resolution, sampling capability, and LVDS output timing behavior. The DC997B-E is not user-replaceable with other ADCs; its analog and digital layout is optimized exclusively for the LTC2241-10.

Does the DC997B-E support both 1VPP and 2VPP analog input ranges?

Yes, the DC997B-E supports selectable analog input ranges of 1 V_PP or 2 V_PP via the JP4 SENSE jumper. Setting JP4 to VCM selects 1 V_PP; setting it to 2.5 V selects 2 V_PP. This configuration directly adjusts the common-mode voltage at the LTC2241-10 inputs and must match the source signal level to avoid clipping or SNR degradation on the DC997B-E.

Which data acquisition system is compatible with the DC997B-E?

The DC997B-E is fully compatible with the DC890B FastDAACS data collection board and PScope software. The DC890B provides LVDS capture, FPGA-based real-time processing, and USB interface - and automatically detects the DC997B-E when connected. External 6 V power must be applied to the DC890B to enable LVDS mode before communicating with the DC997B-E.

How is the encode clock interfaced on the DC997B-E?

The encode clock is applied via an SMA connector labeled "ENCODE CLK" on the DC997B-E, using capacitor coupling and 50 Ω on-board termination. It accepts low-jitter sine or square wave signals from 0.2 V_P-P to 2.5 V_P-P. The LTC2241-10 on the DC997B-E does not accept logic-level clocks; improper drive levels or excessive jitter will degrade SFDR and SNR performance.

Can the DC997B-E operate without the DC890B?

Yes, the DC997B-E can operate standalone with external equipment: its LVDS data and clock outputs (J2 pins) are accessible for connection to logic analyzers, custom FPGA capture systems, or high-speed digitizers. However, no onboard memory, triggering, or USB interface is provided - full evaluation requires external capture hardware and signal generation sources compatible with the DC997B-E's 10-bit LVDS timing and voltage levels.