Analog Devices Inc. EVAL-ADG936REBZ

Overview

EVAL-ADG936REBZ from Analog Devices is an evaluation board designed to characterize the ADG936-R reflective dual SPDT RF switch, supporting 50 Ω impedance-matched signal paths up to 1 GHz, with on-board SMA connectors (J3–J10), VDD supply range of 1.65 V to 2.75 V, and CMOS-compatible control inputs INA/INB for rapid RF switching validation in lab environments.

For engineers reviewing the EVAL-ADG936REBZ datasheet, EVAL-ADG936REBZ pinout, EVAL-ADG936REBZ application, or EVAL-ADG936REBZ equivalent, this board enables fast insertion loss/isolation measurement using only a network analyzer and DC power supply-no external logic or PCB layout required-making it ideal for RF front-end prototyping, antenna switching verification, and wideband switch performance benchmarking.

Technical Context

The EVAL-ADG936REBZ implements a 4-layer FR4 PCB (ε_r = 4.3, thickness = 0.062") with coplanar waveguide transmission lines (trace width = 0.024", ground clearance = 0.008") to maintain 50 Ω impedance across all RF paths including RFCA/J3, RFCB/J4, RF1A/J5, RF2A/J6, RF1B/J7, and RF2B/J8. A dedicated through-line (J9–J10) provides calibrated reference path loss measurement.

Power delivery includes dual 10 μF tantalum (C1, C2) and one 100 pF NPO ceramic (C3) decoupling capacitors on the VDD rail (J12), while control logic is implemented via SMB connectors (J1, J2) or solder-jumpers K1/K2 for static high/low configuration of INA and INB-eliminating need for external drivers.

Key Specifications

Availability

EVAL-ADG936REBZ is available at Aetrix Electronics and suitable for RF front-end prototyping, antenna diversity testing, and wideband switch characterization requiring stable component supply, traceable sourcing, and consistent evaluation board revision (Rev. 0).

Supply support for EVAL-ADG936REBZ 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. is a global leader in high-performance analog, mixed-signal, and RF ICs, headquartered in Norwood, MA, serving precision instrumentation, communications, and industrial markets since 1965.

The EVAL-ADG936REBZ belongs to Analog Devices' RF Switch Evaluation Platform family, engineered specifically to accelerate validation of broadband CMOS SPDT switches in 50 Ω systems-emphasizing measurement repeatability, minimal parasitic impact, and direct network analyzer integration.

FAQ

What is the primary function of the EVAL-ADG936REBZ?

The EVAL-ADG936REBZ is an evaluation board built exclusively for the ADG936-R reflective dual SPDT RF switch. It provides calibrated 50 Ω signal paths, onboard decoupling, and flexible control options to enable accurate S-parameter measurement (S21/S11/S33/S44) of the ADG936-R without custom PCB development. The EVAL-ADG936REBZ does not operate as a standalone switch-it hosts and interfaces the ADG936-R die for lab-based RF characterization.

How do I configure the ADG936-R switch states on the EVAL-ADG936REBZ?

Switch states on the EVAL-ADG936REBZ are controlled via INA and INB signals applied to SMB connectors J1 and J2, or set statically using jumpers K1 (INA) and K2 (INB). Per Table 1 in the documentation, 'H' connects RF1A/RF2A or RF1B/RF2B respectively, while 'L' disconnects those paths. The EVAL-ADG936REBZ supports all four combinations: both switches open, RF1A/RF1B closed, RF2A/RF2B closed, or mixed routing-matching ADG936-R's dual SPDT behavior.

Does the EVAL-ADG936REBZ support the ADG936 (absorptive version) as well?

No-the EVAL-ADG936REBZ is specifically configured for the ADG936-R reflective variant. While the board silkscreen and ordering guide list both EVAL-ADG936EB (for ADG936) and EVAL-ADG936REBZ (for ADG936-R), the physical layout, termination strategy, and calibration intent differ. The EVAL-ADG936REBZ lacks the 50 Ω shunt terminations required for the absorptive ADG936, making it incompatible for that device's matched-port operation.

What RF connectors are used on the EVAL-ADG936REBZ and what is their specification?

The EVAL-ADG936REBZ uses eight SMA end-launch RF connectors (J3–J10) sourced from Johnson Components (P/N 142-0701-851), rated for DC–18 GHz operation and optimized for 50 Ω microstrip/coplanar waveguide transitions. J3 and J4 serve RFCA and RFCB ports; J5–J8 route RF1A, RF2A, RF1B, RF2B; J9 and J10 form the calibration through-path-all mounted with controlled impedance alignment to minimize discontinuity-induced ripple below 1 GHz.

Can the EVAL-ADG936REBZ be used without a network analyzer?

Yes-but with limited utility. While the EVAL-ADG936REBZ can be powered and controlled with a DC supply and logic signals to verify basic switching (e.g., continuity/resistance), its core value lies in high-frequency RF characterization. Without a vector network analyzer (VNA), users cannot quantify insertion loss, isolation, return loss, or group delay-key metrics defined for the ADG936-R up to 1 GHz. The EVAL-ADG936REBZ's through-line (J9–J10) and impedance-controlled layout are purpose-built for VNA-based de-embedding and calibration.