Analog Devices Inc. ADG919BCP-REEL7

Overview

ADG919BCP-REEL7 from Analog Devices is a reflective 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 1.65 V to 2.75 V CMOS/LVTTL logic - enabling low-power antenna diversity switching in compact 3 mm × 3 mm LFCSP packages.

For engineers reviewing the ADG919BCP-REEL7 datasheet, ADG919BCP-REEL7 pinout, ADG919BCP-REEL7 application, or ADG919BCP-REEL7 equivalent, key selection criteria include its reflective architecture (vs. absorptive ADG918), 4 GHz −3 dB bandwidth, 6.5 ns typical off-switching time, and compatibility with 50 Ω RF systems requiring minimal video feedthrough (2.5 mV_p-p) and high IP3 (36 dBm typ).

Technical Context

The ADG919BCP-REEL7 implements a reflective RF switch topology with 0 Ω shunt terminations to ground - distinguishing it from the absorptive ADG918's 50 Ω matched shunts. Its on-board CMOS control logic accepts 1.65 V–2.75 V inputs and drives a single-pole double-throw path between RFC and either RF1 or RF2 based on CTRL logic level.

It achieves broadband performance up to 4 GHz (−3 dB point) with guaranteed isolation >34 dB at 1 GHz (LFCSP package), <1 µA quiescent current, and sub-10 ns switching transitions - optimized for digital transceiver front-end signal routing where VSWR on off-ports is non-critical and power efficiency is prioritized.

Key Specifications

Pinout & Package

ADG919BCP-REEL7 uses an 8-lead Lead Frame Chip Scale Package (LFCSP), 3 mm × 3 mm body, 0.75 mm height, with exposed pad tied to GND per JEDEC MO-229-WEED. Pin 1 identifier located at top-left corner of top view; exposed pad must be soldered to PCB ground plane 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 ADG918BCPZ-REEL7, ADG919BCP-REEL7 trades off-port VSWR control for lower insertion loss and zero static power in the shunt path; versus QM11036TR13, it offers superior voltage compatibility and thermal resistance in compact LFCSP, albeit with narrower bandwidth and lower isolation above 2 GHz.

Availability

ADG919BCP-REEL7 is available at Aetrix Electronics and suitable for wireless metering, antenna diversity switching, and digital transceiver front-end designs requiring stable component supply across industrial temperature ranges (−40°C to +85°C).

Supply support for ADG919BCP-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, serving precision instrumentation, communications, and industrial markets since 1965.

The ADG919BCP-REEL7 belongs to Analog Devices' RF Switch family - engineered specifically for low-voltage, wideband signal routing in battery-powered and space-constrained wireless infrastructure and client devices.

FAQ

What is the maximum operating frequency of the ADG919BCP-REEL7 before insertion loss exceeds 1 dB?

The ADG919BCP-REEL7 has a −3 dB bandwidth of 4 GHz, meaning insertion loss increases by 3 dB relative to its low-frequency value at that point. Its 1 dB compression point (P−1 dB) is 17 dBm at 1 GHz, but frequency-dependent loss reaches +1 dB degradation at approximately 2.5 GHz per Figure 8 in the Rev. E datasheet. This defines the practical upper limit for linear operation in most 50 Ω systems.

Can the ADG919BCP-REEL7 be used as a drop-in replacement for the ADG918BCPZ-REEL7?

No, the ADG919BCP-REEL7 is not a drop-in replacement for the ADG918BCPZ-REEL7. While pin-compatible and sharing identical LFCSP packaging, their RF architectures differ fundamentally: ADG919BCP-REEL7 is reflective (0 Ω shunt), whereas ADG918BCPZ-REEL7 is absorptive (50 Ω shunt). Swapping them may cause VSWR degradation and system-level mismatch issues in applications requiring off-port termination.

What is the recommended PCB layout practice for the exposed pad on the ADG919BCP-REEL7?

The exposed pad on the ADG919BCP-REEL7 must be soldered to a solid copper ground plane using ≥4 thermal vias (0.3 mm diameter, spaced evenly) connecting to inner ground layers. Per Figure 5 and Outline Dimension drawing CP-8-13, this pad serves as primary thermal and RF ground return - insufficient connection causes elevated junction temperature (>84°C/W θ_JA on 2-layer board) and degraded isolation above 500 MHz.

Does the ADG919BCP-REEL7 support bidirectional RF signal flow?

Yes, the ADG919BCP-REEL7 supports fully bidirectional RF operation: RF1↔RFC and RF2↔RFC paths exhibit symmetric insertion loss (0.8 dB typ at 1 GHz) and isolation (43 dB typ at 1 GHz) per S-parameter characterization in Table 1. Its reflective architecture imposes no inherent directionality - signal routing depends solely on CTRL state, not source/sink assignment.

What is the absolute maximum input RF power the ADG919BCP-REEL7 can handle without damage?

The ADG919BCP-REEL7 has an absolute maximum input RF power rating of 18 dBm (63 mW) per Absolute Maximum Ratings Table 2. Exceeding this - even briefly - risks permanent degradation of on-resistance or gate oxide integrity. For reliable operation, keep continuous RF input ≤17 dBm (P−1 dB point at 1 GHz) and pulsed RF within duty-cycle derated limits defined in Analog Devices Application Note AN-1119.