Analog Devices Inc. ADG918BCP-REEL7

Overview

ADG918BCP-REEL7 from Analog Devices is an absorptive 2:1 RF SPDT switch IC designed 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 a single 1.65 V to 2.75 V CMOS supply - enabling low-power antenna diversity switching in compact 3 mm × 3 mm LFCSP packages.

For engineers reviewing the ADG918BCP-REEL7 datasheet, ADG918BCP-REEL7 pinout, ADG918BCP-REEL7 application, or ADG918BCP-REEL7 equivalent, key selection criteria include its absorptive architecture (50 Ω terminated shunt legs), 4 GHz −3 dB bandwidth, sub-10 ns switching times, and guaranteed performance across −40°C to +85°C industrial temperature range.

Technical Context

The ADG918BCP-REEL7 implements an absorptive SPDT topology with matched 50 Ω terminations on both RF1 and RF2 shunt legs, ensuring stable VSWR regardless of switch state. Its on-board CMOS/LVTTL-compatible control logic eliminates external level-shifting circuitry.

It achieves broadband operation up to 4 GHz via a proprietary CMOS process optimized for RF linearity and isolation. Key performance metrics - including 28.5 dBm typical IP3 at 900 MHz and 17 dBm P−1 dB at 1 GHz - are specified under 2.5 V supply and 25°C, with full characterization across voltage (1.65–2.75 V) and temperature (−40°C to +85°C).

Key Specifications

Pinout & Package

The ADG918BCP-REEL7 uses an 8-lead Lead Frame Chip Scale Package (LFCSP) with 3 mm × 3 mm body and 0.75 mm height (JEDEC MO-229-WEED compliant). The exposed pad must be soldered to PCB ground for thermal and electrical integrity.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG918BCP-REEL7, ADG919BCPZ-REEL7 trades absorptive matching for lower cost and similar bandwidth, while QM11036TR13 offers smaller size and higher supply tolerance but lacks guaranteed industrial temperature support and absorptive behavior.

Availability

ADG918BCP-REEL7 is available at Aetrix Electronics and suitable for wireless metering, tuner modules, antenna diversity systems, and IF switching applications requiring stable component supply across extended temperature ranges and long production lifecycles.

Supply support for ADG918BCP-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 is a global leader in high-performance analog, mixed-signal, and RF ICs, serving precision instrumentation, communications, and industrial markets since 1965.

The ADG918BCP-REEL7 belongs to Analog Devices' RF Switch family, engineered specifically for low-distortion, wideband signal routing in battery-constrained and thermally demanding wireless infrastructure and consumer RF front ends.

FAQ

What is the function of the exposed pad on the ADG918BCP-REEL7?

The exposed pad (EPAD) on the ADG918BCP-REEL7 is a thermal and electrical ground connection that must be soldered to a solid PCB ground plane. It reduces junction-to-board thermal resistance to 48°C/W (4-layer board), improves RF return path integrity, and stabilizes substrate potential - critical for maintaining 43 dB isolation and 0.8 dB insertion loss. Leaving it unconnected degrades both thermal performance and RF matching.

Does the ADG918BCP-REEL7 require external biasing or matching components?

No, the ADG918BCP-REEL7 does not require external biasing or RF matching components. Its absorptive architecture integrates 50 Ω terminations on RF1 and RF2, and all RF ports are internally matched to 50 Ω. Only a 0.1 µF ceramic capacitor between VDD and GND is required for supply decoupling. No baluns, DC blocks, or series resistors are needed for standard 50 Ω system integration.

How does the ADG918BCP-REEL7 differ from the ADG918BRM-REEL7?

The ADG918BCP-REEL7 uses an 8-lead LFCSP (CP-8-13) package with 3 mm × 3 mm footprint and exposed thermal pad, while the ADG918BRM-REEL7 uses an 8-lead MSOP (RM-8) package measuring 3.2 mm × 3.0 mm. Both share identical electrical specifications, temperature range (−40°C to +85°C), and absorptive SPDT functionality, but the LFCSP offers superior thermal performance (48°C/W vs. 206°C/W) and higher density mounting.

Can the ADG918BCP-REEL7 operate reliably at 1.65 V supply?

Yes, the ADG918BCP-REEL7 is fully specified and tested down to 1.65 V supply. At this minimum voltage, insertion loss increases by ≤0.15 dB at 1 GHz versus 2.5 V operation, and isolation remains ≥36 dB at 1 GHz. Logic thresholds scale with VDD (VINH = 0.65×VDD, VINL = 0.35×VDD), ensuring robust CMOS/LVTTL compatibility across the full 1.65–2.75 V range.

What is the maximum RF input power the ADG918BCP-REEL7 can handle continuously?

The ADG918BCP-REEL7 has an absolute maximum RF input power rating of 18 dBm (63 mW) per RF port, with a 1 dB compression point (P−1 dB) of 17 dBm at 1 GHz. For continuous operation, sustained input power should remain ≤10 dBm to ensure long-term reliability and avoid thermal derating - especially in sealed enclosures or high ambient temperatures (>70°C).