Analog Devices Inc. ADG901BCPZ-REEL7

Overview

ADG901BCPZ-REEL7 from Analog Devices is an absorptive single-pole single-throw (SPST) RF switch optimized for 0 Hz to 4.5 GHz operation, delivering 40 dB off-isolation at 1 GHz, 0.8 dB insertion loss at 1 GHz, and 17 dBm P1dB compression point - enabling dc-coupled signal routing up to 0.5 V in antenna diversity and tuner modules.

For engineers reviewing the ADG901BCPZ-REEL7 datasheet, ADG901BCPZ-REEL7 pinout, ADG901BCPZ-REEL7 application, or ADG901BCPZ-REEL7 equivalent, key selection criteria include absorptive termination for VSWR stability, LFCSP-8 package thermal performance, CMOS/LVTTL control compatibility, and verified 1 GHz RF linearity metrics.

Technical Context

The ADG901BCPZ-REEL7 implements an absorptive SPST architecture with internal 50 Ω shunt terminations on both RF ports, ensuring matched impedance regardless of switch state. Its CMOS-based control logic accepts 1.65 V to 2.75 V supply and supports TTL/CMOS voltage thresholds, eliminating external level-shifting circuitry.

It operates across dc to 4.5 GHz with −3 dB bandwidth fully specified, maintains ≤1.25 dB insertion loss up to 1 GHz, and achieves 28.5–36 dBm IP3 at 900 MHz - confirming low distortion in multi-tone RF environments without requiring dc blocking capacitors for signals ≤0.5 V.

Key Specifications

Pinout & Package

ADG901BCPZ-REEL7 uses an 8-lead LFCSP (3 mm × 3 mm, CP-8-13) with exposed pad tied to GND for thermal and RF grounding. The package supports 4-layer PCB mounting with θJA = 48°C/W.

Key Features

Applications

Equivalent & Alternatives

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

Compared with ADG901BCPZ-REEL7, ADG901BRMZ-REEL7 trades thermal efficiency and miniaturization for assembly flexibility, while QM11036 sacrifices absorptive behavior and dc coupling for extended high-frequency coverage - making ADG901BCPZ-REEL7 uniquely suited for compact, dc-coupled, VSWR-critical RF designs.

Availability

ADG901BCPZ-REEL7 is available at Aetrix Electronics and suitable for antenna diversity switching, tuner module signal routing, and dual-band transceiver front-end designs requiring stable component supply, RoHS-compliant packaging, and guaranteed LFCSP-8 traceability.

Supply support for ADG901BCPZ-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 ADG901BCPZ-REEL7 belongs to Analog Devices' wideband RF switch product line, engineered specifically for dc-to-4.5 GHz absorptive switching in space-constrained, low-power wireless infrastructure and consumer radio systems.

FAQ

What is the maximum dc voltage that ADG901BCPZ-REEL7 can pass without blocking capacitors?

ADG901BCPZ-REEL7 supports dc-coupled operation up to 0.5 V on its RF ports. This capability eliminates the need for external dc blocking capacitors in applications such as IF switching or bias-tolerant antenna paths. Exceeding 0.5 V risks violating absolute maximum ratings and may degrade RF performance or cause permanent damage. Always verify dc bias conditions against Table 3 in the ADG901BCPZ-REEL7 datasheet.

Does ADG901BCPZ-REEL7 require external termination resistors for proper absorptive operation?

No, ADG901BCPZ-REEL7 integrates internal 50 Ω shunt terminations on both RF1 and RF2 ports, enabling true absorptive behavior without external components. This design ensures stable 50 Ω VSWR in both ON and OFF states, critical for minimizing reflections in sensitive RF sources. External termination is neither required nor recommended, as it would disrupt the calibrated match.

What is the thermal resistance (θJA) of ADG901BCPZ-REEL7, and how does it affect power handling?

ADG901BCPZ-REEL7 has a θJA of 48°C/W on a 4-layer PCB, per its LFCSP-8 (CP-8-13) package specification. At 17 dBm P1dB (≈50 mW), junction temperature rise is ~2.4°C above ambient - well within safe limits. This low thermal resistance enables reliable operation in compact RF modules without heatsinking, unlike the MSOP variant (θJA = 206°C/W), which would exceed safe junction temperatures under identical conditions.

Can ADG901BCPZ-REEL7 operate with a 1.8 V supply, and how does it impact RF performance?

Yes, ADG901BCPZ-REEL7 is fully specified from 1.65 V to 2.75 V, including 1.8 V. At 1.8 V, insertion loss increases by ≤0.1 dB and off-isolation decreases by ≤3 dB at 1 GHz versus 2.5 V operation - verified in Figures 6–8 of the datasheet. Control logic remains functional with VINH = 0.65×VDD = 1.17 V, ensuring robust interface with 1.8 V GPIOs.

Is ADG901BCPZ-REEL7 pin-compatible with ADG902 variants?

No, ADG901BCPZ-REEL7 and ADG902 variants share identical pinouts but differ fundamentally in internal topology: ADG901BCPZ-REEL7 is absorptive (50 Ω shunt), while ADG902 is reflective (0 Ω shunt). Swapping them without redesigning matching networks will severely degrade VSWR and isolation. They are functionally distinct parts sharing package and pin configuration - not drop-in replacements.