AM000220D5WM-00-R DC–22GHz 5-Bit Digital Attenuator
Product Specifications
| Parameter | Specification |
| Product Type | 5-Bit Digital Attenuator |
| Semiconductor Technology | GaAs MMIC |
| Frequency Range | DC–22GHz |
| Attenuation Bits | 0.5, 1, 2, 4 and 8dB |
| Total Attenuation Range | 15.5dB |
| Minimum Attenuation Step | 0.5dB |
| Insertion Loss at 10GHz | 3.25dB typical |
| Insertion Loss at 20GHz | 5.25dB typical |
| P0.1dB | 23dBm typical |
| P0.5dB | 25dBm typical |
| CW Power Handling | 25dBm typical |
| Input Return Loss | 15dB typical |
| Output Return Loss | 15dB typical |
| Switching Speed | 100ns typical |
| Control Voltage | 0V / −5V |
| RF Impedance | 50Ω |
| Package | Bare Die |
| Die Size | 1.46 × 1.46mm |
| Die Thickness | 4 mils |
| Operating Temperature | −55°C to +85°C |
Product Overview
The AM000220D5WM-00-R is a broadband GaAs MMIC digital attenuator operating from DC to 22GHz. Its five binary-weighted attenuation bits provide selectable values of 0.5, 1, 2, 4 and 8dB, allowing a maximum combined attenuation of 15.5dB.
The device is internally matched to 50Ω and offers approximately 100ns switching speed. It is supplied as a bare die for integration into hybrid microwave circuits, phased-array modules and compact RF assemblies.
Key Features
Broadband operation from DC to 22GHz
Five digitally controlled attenuation bits
0.5dB minimum attenuation step
15.5dB maximum attenuation range
25dBm typical CW power handling
100ns typical switching speed
0V and −5V control logic
50Ω matched RF ports
Compact 1.46 × 1.46mm bare die
Attenuation Control
The five attenuation bits can be combined to generate attenuation settings between the reference state and 15.5dB. Each bit uses complementary control pads operated with 0V and −5V logic.
| Attenuation Bit | Control Function |
| P0.5 | Adds 0.5dB attenuation |
| P1 | Adds 1dB attenuation |
| P2 | Adds 2dB attenuation |
| P4 | Adds 4dB attenuation |
| P8 | Adds 8dB attenuation |
For example, activating the 0.5, 1, 2, 4 and 8dB bits together produces the full 15.5dB attenuation state.
Typical Applications
The AM000220D5WM-00-R is suitable for:
Radar systems
Phased-array antennas
Commercial communication equipment
RF and microwave test instruments
Automatic gain-control circuits
Broadband signal-level adjustment
Microwave transmitter and receiver modules
Radar, communication systems, test instruments and phased arrays are identified as primary applications in the official datasheet.
Bare-Die Integration Notes
The AM000220D5WM-00-R requires die attachment, RF wire bonding and external digital-control connections. AMCOM’s reference test circuit uses 10-mil RO4350 material and recommends keeping bond wires as short as possible.
The absolute maximum ratings include a −7V control voltage, 3mA control current, 26dBm RF input and 175°C maximum channel temperature. These are maximum limits rather than recommended operating conditions.
Frequently Asked Questions
What is the attenuation range?
The device provides five selectable bits with a combined attenuation range of 15.5dB and a minimum step size of 0.5dB.
What is the insertion loss?
Typical insertion loss is approximately 3.25dB at 10GHz and 5.25dB at 20GHz.
How much RF power can it handle?
AMCOM specifies 25dBm typical CW power handling, equivalent to approximately 316mW. The absolute maximum RF input rating is 26dBm.
Is it supplied in a QFN package?
No. The AM000220D5WM-00-R is supplied as a bare die measuring approximately 1.46 × 1.46mm.
What control voltage is required?
The digital attenuation states use complementary 0V and −5V control signals.
AM000220D5WM-00-R Price and Availability
DataStorageIC supplies AMCOM RF and microwave components for engineering evaluation, prototype development and production requirements.
Send the complete part number and required quantity to request:
AM000220D5WM-00-R price
Current availability and lead time
Official datasheet confirmation
Bare-die and packaging information
Shipping and export details
Alternative packaged digital attenuators
Frequency and attenuation-range comparison
Contact DataStorageIC with your required quantity, destination country and delivery schedule to receive an AM000220D5WM-00-R RFQ.
