Analog Devices Inc. ADG936BRU-R-500RL7

Overview

ADG936BRU-R-500RL7 from Analog Devices is a reflective dual SPDT RF switch optimized for high-isolation, low-loss signal routing up to 1 GHz in wireless transceivers and antenna diversity systems. It operates from 1.65 V to 2.75 V, delivers 36 dB off-isolation at 1 GHz, 0.9 dB insertion loss at 1 GHz, and features CMOS/LVTTL-compatible control logic with 20-lead TSSOP packaging.

For engineers reviewing the ADG936BRU-R-500RL7 datasheet, ADG936BRU-R-500RL7 pinout, ADG936BRU-R-500RL7 application, or ADG936BRU-R-500RL7 equivalent, key selection criteria include its reflective architecture (vs. absorptive ADG936), 1 GHz bandwidth, 50 Ω RF port impedance, switching speed (11 ns t_ON), and suitability for Tx/Rx isolation and filter selection in ISM-band systems.

Technical Context

The ADG936BRU-R-500RL7 implements a reflective dual SPDT topology with 0 Ω shunt terminations to ground-distinct from the absorptive ADG936's 50 Ω matched shunts. Its on-board CMOS control logic accepts 1.65 V–2.75 V supply and supports both CMOS and LVTTL input thresholds (V_INH = 1.7 V min at V_DD ≥ 2.25 V).

It achieves high off-isolation (36 dB @ 1 GHz) and low insertion loss (0.9 dB @ 1 GHz) across dc–1 GHz via optimized RF path design, with 50 Ω input/output impedance and no requirement for external dc blocking capacitors. Video feedthrough is limited to 3 mV_p-p, and third-order intercept (IP3) reaches 32 dBm at 900 MHz.

Key Specifications

Pinout & Package

ADG936BRU-R-500RL7 is packaged in a 20-lead TSSOP (RU-20) with exposed pad tied to GND. Pin 1 is marked by a dot; the exposed pad must be soldered to a grounded thermal pad for optimal RF performance and thermal dissipation.

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar RF switch applications.

Compared with ADG936BRU-500RL7 and AS179-020, ADG936BRU-R-500RL7 uniquely balances dual-path flexibility, 1.65 V compatibility, and reflective simplicity-making it optimal for cost-sensitive, multi-antenna ISM-band designs where moderate off-port VSWR is acceptable.

Availability

ADG936BRU-R-500RL7 is available at Aetrix Electronics and suitable for wireless communications, antenna diversity switching, and high-speed filter selection requiring stable component supply across industrial temperature ranges (−40°C to +85°C).

Supply support for ADG936BRU-R-500RL7 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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, and industrial markets since 1965.

The ADG9xx family-including ADG936BRU-R-500RL7-is designed specifically for wideband RF switching in ISM-band and sub-1 GHz wireless infrastructure, emphasizing low distortion, high isolation, and seamless integration with 1.8 V logic.

FAQ

What is the key functional distinction between ADG936BRU-R-500RL7 and ADG936BRU-500RL7?

The ADG936BRU-R-500RL7 is a reflective dual SPDT switch with 0 Ω shunt terminations to ground, while ADG936BRU-500RL7 is absorptive with internal 50 Ω shunt terminations. This makes ADG936BRU-R-500RL7 simpler and lower-cost but results in poorer off-port VSWR; ADG936BRU-500RL7 provides superior impedance matching in reflection-sensitive circuits. Both share identical pinout, supply range, and timing specs.

Does ADG936BRU-R-500RL7 require external dc blocking capacitors on its RF ports?

No, ADG936BRU-R-500RL7 does not require external dc blocking capacitors on RFCA, RFCB, RF1A, RF2A, RF1B, or RF2B ports. Its internal architecture supports dc-coupled RF signal routing, simplifying layout and reducing component count in IF and baseband switching applications.

What is the maximum RF input power ADG936BRU-R-500RL7 can handle without compression?

ADG936BRU-R-500RL7 has a 1 dB compression point (P–1 dB) of 16 dBm at 1000 MHz. At this input power level, insertion loss increases by 1 dB relative to its small-signal value. For linear operation in receiver front ends or low-distortion filtering, operation below 10 dBm is recommended to maintain IP3 > 27.5 dBm.

Can ADG936BRU-R-500RL7 operate from a 1.8 V supply, and what are the logic threshold implications?

Yes, ADG936BRU-R-500RL7 operates from 1.65 V to 2.75 V, including 1.8 V nominal rails. At V_DD = 1.8 V, input high voltage (V_INH) is guaranteed ≥ 0.65 × V_DD = 1.17 V, and input low (V_INL) ≤ 0.35 × V_DD = 0.63 V-ensuring reliable interfacing with standard 1.8 V CMOS outputs without level shifters.

Is the exposed thermal pad on ADG936BRU-R-500RL7's TSSOP package required to be connected to ground?

Yes, the exposed pad on ADG936BRU-R-500RL7 must be soldered to a solid GND plane. Per Analog Devices' datasheet (Page 5, Note 1), it is electrically tied to substrate and GND. Failure to connect it degrades RF performance (isolation, return loss) and thermal reliability-especially under continuous 16 dBm operation.