Overview
The ADG918BRM-REEL, produced by Analog Devices Inc., is a wideband RF switch that utilizes a CMOS process to offer high isolation and low insertion loss up to 1 GHz. This device is part of the ADG918/ADG919 series, with the ADG918 being an absorptive (matched) switch and the ADG919 being a reflective switch. The ADG918BRM-REEL is specifically packaged in an 8-lead Mini Small Outline Package (MSOP) and is available on a tape and reel (TR) for convenient use in high-volume production.
Key Specifications
| Parameter | Symbol | Test Conditions/Comments | Min | Typ | Max | Unit |
|---|---|---|---|---|---|---|
| Operating Frequency | - | DC to 2 GHz | - | - | - | - |
| Insertion Loss | S21, S12 | DC to 100 MHz; VDD = 2.5 V ± 10% | 0.4 | 0.7 | 0.8 | dB |
| Insertion Loss | S21, S12 | 500 MHz; VDD = 2.5 V ± 10% | 0.5 | 0.8 | 1.0 | dB |
| Insertion Loss | S21, S12 | 1000 MHz; VDD = 2.5 V ± 10% | 0.8 | 1.0 | 1.25 | dB |
| Isolation—RFC to RF1/RF2 | S21, S12 | 100 MHz (CP Package) | 55 | 60 | - | dB |
| Isolation—RFC to RF1/RF2 | S21, S12 | 500 MHz (CP Package) | 43 | 47 | - | dB |
| Isolation—RFC to RF1/RF2 | S21, S12 | 1000 MHz (CP Package) | 34 | 37 | - | dB |
| On Switching Time | tON | 50% CTRL to 90% RF | 6.6 | - | 10 | ns |
| Off Switching Time | tOFF | 50% CTRL to 10% RF | 6.5 | - | 9.5 | ns |
| Rise Time | tRISE | 10% to 90% RF | 6.1 | - | 9 | ns |
| Fall Time | tFALL | 90% to 10% RF | 6.1 | - | 9 | ns |
| Power Supply Voltage | VDD | - | 1.65 | - | 2.75 | V |
| Quiescent Power Supply Current | IDD | Digital inputs = 0 V or VDD | 0.1 | - | 1 | µA |
Key Features
- Wideband switch with operation up to 2 GHz and −3 dB at 4 GHz
- Absorptive (matched) switch with 50 Ω terminated shunt legs for the ADG918
- Reflective switch for the ADG919
- High off isolation (up to 43 dB at 1 GHz)
- Low insertion loss (0.8 dB at 1 GHz)
- Single 1.65 V to 2.75 V power supply
- CMOS/LVTTL control logic compatibility
- Low power consumption (<1 µA)
- Available in 8-lead MSOP and 3 mm × 3 mm LFCSP packages
Applications
- Wireless communications
- General-purpose RF switching
- Dual-band applications
- High speed filter selection
- Digital transceiver front end switch
- IF switching
- Tuner modules
- Antenna diversity switching
Q & A
- What is the operating frequency range of the ADG918BRM-REEL? The ADG918BRM-REEL operates from DC to 2 GHz.
- What is the insertion loss at 1 GHz for the ADG918BRM-REEL? The insertion loss at 1 GHz is typically 0.8 dB.
- What is the isolation between RFC and RF1/RF2 at 1 GHz? The isolation between RFC and RF1/RF2 at 1 GHz is typically 34 dB to 37 dB.
- What are the switching times for the ADG918BRM-REEL? The on switching time is 6.6 ns to 10 ns, and the off switching time is 6.5 ns to 9.5 ns.
- What is the power supply voltage range for the ADG918BRM-REEL? The power supply voltage range is from 1.65 V to 2.75 V.
- What is the quiescent power supply current for the ADG918BRM-REEL? The quiescent power supply current is typically 0.1 µA to 1 µA.
- In what packages is the ADG918BRM-REEL available? It is available in 8-lead MSOP and 3 mm × 3 mm LFCSP packages.
- What control logic is compatible with the ADG918BRM-REEL? The device is compatible with CMOS and LVTTL control logic.
- What are some common applications of the ADG918BRM-REEL? Common applications include wireless communications, general-purpose RF switching, dual-band applications, and antenna diversity switching.
- Is the ADG918BRM-REEL suitable for low power consumption applications? Yes, it has very low power consumption, making it ideal for low power applications.
