Analog Devices Inc. ADG919BRM-REEL7

Overview

ADG919BRM-REEL7 from Analog Devices is a reflective 2:1 RF SPDT switch optimized for high-frequency signal routing in wireless front ends. It delivers 43 dB off-isolation at 1 GHz, 0.8 dB insertion loss at 1 GHz, and operates from 1.65 V to 2.75 V CMOS/LVTTL logic. Its primary role is RF path selection between two inputs (RF1/RF2) and a common port (RFC), enabling antenna diversity and filter switching in compact transceivers.

For engineers reviewing the ADG919BRM-REEL7 datasheet, ADG919BRM-REEL7 pinout, ADG919BRM-REEL7 application, or ADG919BRM-REEL7 equivalent, key selection criteria include its reflective architecture (vs. absorptive ADG918), 4 GHz −3 dB bandwidth, 8-lead MSOP (RM-8) package, and verified performance across −40°C to +85°C industrial temperature range.

Technical Context

The ADG919BRM-REEL7 implements a reflective SPDT topology with 0 Ω shunt terminations to ground on off-state ports-distinct from the 50 Ω matched absorptive design of the ADG918. This architecture yields higher off-isolation at lower frequencies but degrades VSWR on unselected ports.

Its on-board CMOS control logic accepts 1.65 V–2.75 V supply and supports both CMOS and LVTTL input thresholds (VINH ≥ 1.7 V at VDD ≥ 2.25 V; VINL ≤ 0.7 V). Switching is controlled by a single digital input (CTRL), selecting either RF1→RFC or RF2→RFC per truth table, with sub-10 ns tON/tOFF and 6.1 ns rise/fall times.

Key Specifications

Pinout & Package

ADG919BRM-REEL7 is housed in an 8-lead Mini Small Outline Package (MSOP), JEDEC MO-187-AA compliant, with exposed pad tied to GND for thermal and RF grounding. Pin 1 is marked with a dot; the exposed pad must be soldered to PCB ground plane.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG919BRM-REEL7, ADG919BRMZ-REEL7 offers identical RF and timing performance with enhanced environmental compliance, while QM11036 trades logic-level flexibility for higher power capability-making the ADG919BRM-REEL7 optimal for low-voltage, space-constrained, and cost-sensitive wireless metering and tuner applications.

Availability

ADG919BRM-REEL7 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 and long production lifecycles.

Supply support for ADG919BRM-REEL7 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, with design centers and manufacturing worldwide.

The ADG919BRM-REEL7 belongs to Analog Devices' ADG9xx family of wideband RF switches, engineered specifically for low-voltage, high-isolation, and fast-switching requirements in wireless infrastructure, consumer tuners, and IoT connectivity modules.

FAQ

What is the key functional distinction between ADG919BRM-REEL7 and ADG918BRM-REEL7?

The ADG919BRM-REEL7 is a reflective SPDT switch with 0 Ω shunt terminations to ground on unselected ports, whereas the ADG918BRM-REEL7 is absorptive with 50 Ω matched terminations. This makes ADG919BRM-REEL7 better suited for high-isolation, low-loss applications where off-port VSWR is not critical-such as filter selection-while ADG919BRM-REEL7 should not replace ADG918BRM-REEL7 in transmit/receive isolation circuits requiring stable 50 Ω impedance.

Does ADG919BRM-REEL7 require external matching components for 50 Ω system integration?

No, ADG919BRM-REEL7 is designed for direct 50 Ω system integration on the RFC, RF1, and RF2 ports. Its RF ports exhibit 22 dB return loss at 1 GHz, indicating good intrinsic match. However, because it is reflective, unselected RF ports present poor VSWR-so external matching is unnecessary on the active path but may be needed on unused ports if system-level reflections are problematic.

What is the maximum RF input power ADG919BRM-REEL7 can handle without compression?

The ADG919BRM-REEL7 has a P−1 dB compression point of 17 dBm at 1 GHz, meaning its insertion loss increases by 1 dB when the RF input power reaches +17 dBm. This defines its usable linear operating range; exceeding this level introduces harmonic distortion and gain nonlinearity that degrade signal fidelity in sensitive receivers or transmitters.

Can ADG919BRM-REEL7 operate reliably at 1.65 V supply voltage?

Yes, ADG919BRM-REEL7 is fully specified from 1.65 V to 2.75 V. At 1.65 V, its insertion loss remains ≤1.25 dB at 1 GHz, off-isolation stays ≥34 dB, and switching times increase only marginally (tON ≤10 ns). This makes ADG919BRM-REEL7 compatible with modern ultra-low-power microcontrollers and battery-operated RF modules.

Is the exposed pad on ADG919BRM-REEL7's MSOP package electrically connected and how should it be handled?

Yes, the exposed pad on ADG919BRM-REEL7's RM-8 MSOP package is internally connected to GND and must be soldered to a solid PCB ground plane. Per Analog Devices' datasheet, this connection is mandatory for thermal dissipation, RF grounding, and achieving specified isolation and return loss performance-failure to do so degrades RF metrics and risks thermal overstress under continuous RF operation.