Analog Devices Inc. ADG936BRU-R-REEL

Overview

ADG936BRU-R-REEL from Analog Devices is a reflective dual SPDT RF switch optimized for high-isolation, low-loss signal routing up to 4 GHz. It operates from 1.65 V to 2.75 V, delivers 36 dB off-isolation at 1 GHz and 0.9 dB insertion loss at 1 GHz, and supports CMOS/LVTTL control logic. It is used in antenna diversity switching and Tx/Rx front-end modules in ISM-band wireless transceivers.

For engineers reviewing the ADG936BRU-R-REEL datasheet, ADG936BRU-R-REEL pinout, ADG936BRU-R-REEL application, or ADG936BRU-R-REEL equivalent, key selection criteria include its reflective architecture (vs. absorptive ADG936), 20-lead TSSOP package, 1 ns video feedthrough, −40°C to +85°C industrial temperature range, and suitability for high-speed filter selection without dc blocking capacitors.

Technical Context

The ADG936BRU-R-REEL implements two independent reflective SPDT switches using a CMOS process, with RFCB and RFCA as common ports and RF1A/RF2A and RF1B/RF2B as throw ports. Its reflective topology terminates off-state shunt legs to ground (0 Ω), resulting in high off-isolation but degraded off-port VSWR compared to absorptive variants.

On-chip CMOS control logic accepts 1.65 V–2.75 V logic levels, enabling direct interface with baseband processors. Switching performance includes 11 ns typical t_ON, 10 ns typical t_OFF, and 6.1 ns typical t_RISE, supporting >100 MHz digital control rates while maintaining RF integrity up to 1 GHz.

Key Specifications

Pinout & Package

ADG936BRU-R-REEL is housed in a 20-lead TSSOP (RU-20) package with exposed pad tied to GND. The package measures 6.5 mm × 4.4 mm × 1.2 mm and is JEDEC MO-153-AC compliant.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG936BRU-R-REEL, ADG936BRUZ-REEL offers identical RF functionality with enhanced environmental compliance, while ADG918BRMZ-REEL7 trades dual-channel integration and reflective isolation for compact size and matched port behavior-making it suitable only where single-path routing suffices.

Availability

ADG936BRU-R-REEL is available at Aetrix Electronics and suitable for wireless communications infrastructure, antenna diversity systems, and digital transceiver front-end switching requiring stable component supply across industrial temperature ranges and long production lifecycles.

Supply support for ADG936BRU-R-REEL 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 integrated circuits, headquartered in Norwood, MA, with design centers and manufacturing worldwide.

The ADG9xx family-including ADG936BRU-R-REEL-is designed specifically for wideband, low-power RF signal routing in wireless handsets, base stations, and broadband infrastructure, emphasizing high isolation, low insertion loss, and seamless integration with digital baseband controllers.

FAQ

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

The ADG936BRU-R-REEL is the reflective variant of the dual SPDT RF switch, terminating off-state shunt legs to ground (0 Ω), whereas ADG936BRU-REEL is the absorptive variant with 50 Ω shunt terminations. This makes ADG936BRU-R-REEL better suited for applications prioritizing maximum off-isolation over off-port VSWR, such as Tx/Rx switching where source reflection is less critical than path suppression.

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

No, ADG936BRU-R-REEL does not require external dc blocking capacitors. Its internal architecture supports dc-coupled RF signal paths, enabling direct connection of bias tees, LO injection lines, or dc-sensitive components without added capacitance or insertion loss-confirmed in the datasheet's "No dc blocking capacitors required" feature and functional block diagrams.

What is the maximum RF input power ADG936BRU-R-REEL can handle before compression?

ADG936BRU-R-REEL has a typical P–1 dB of 16 dBm at 1 GHz, meaning its insertion loss increases by 1 dB when the RF input power reaches this level. This rating is verified across the −40°C to +85°C operating range and supports use in cellular handset front ends and medium-power ISM-band transmitters.

Can ADG936BRU-R-REEL operate from a 1.8 V supply, and how does that affect RF performance?

Yes, ADG936BRU-R-REEL is fully specified for 1.65 V to 2.75 V operation, including 1.8 V. At 1.8 V, insertion loss increases slightly (e.g., +0.15 dB at 1 GHz vs. 2.5 V), and off-isolation decreases marginally (e.g., −2 dB at 1 GHz), but all key specs remain within guaranteed limits per Table 1 of the Rev. B datasheet.

Is the pinout of ADG936BRU-R-REEL compatible with ADG936BCPZ-R-REEL?

No-ADG936BRU-R-REEL uses a 20-lead TSSOP (RU-20) package, while ADG936BCPZ-R-REEL uses a 20-lead LFCSP (CP-20-6) package. Although both share identical pin functions and numbering (per Table 4), their physical footprints, thermal pads, and soldering requirements differ significantly; PCB layout and assembly processes are not interchangeable.