Honeywell As Your RFIC Partner
Honeywell’s family of digital attenuators offers an effective solution for your RFIC needs. We
fuse our proven reliability with innovative technology solutions to offer the value, quality and
service you need in today’s fast-paced data communications marketplace.
By partnering with Honeywell, you’re teaming up with a pioneer of Silicon On Insulator
(SOI) CMOS technology and over 24 years experience in SOI IC design, development and
manufacturing.
With SOI CMOS technology, our designs integrate CMOS control logic and ESD protection,
operate from a single positive supply voltage, and have exceptionally high channel-to-channel
isolation. In addition, SOI CMOS technology provides the performance of GaAs with the
economy of conventional bulk CMOS.
Attenuators With World-Class Step Accuracy
The Honeywell family of digital attenuators is designed for wireless applications requiring
high accuracy, compact packaging and low power consumption. They are developed with our
patented SOI CMOS technology and operate optimally in cellular, Personal Communications
Service (PCS) Global System for Mobile communications (GSM) basestations, and 2.4 GHz
Wireless Local Area Network applications.
Honeywell digital attenuators are available in serial and parallel architectures, offer amazingly
low insertion loss, and feature a unique combination of the low DC power consumption of a
CMOS product with the attenuation accuracy and GHz frequency range of a GaAs product.
In addition to providing quality products, we offer support to ensure our devices work effectively as designed in your products. You
receive the added benefit of our expertise in designing and developing ICs when you choose Honeywell as your supplier.
Visit www.mysoiservices.com to receive more information about our products and list of sales representatives located near you. Order
evaluation boards through our worldwide distributor, Richardson Electronics, at http://www.rfpowernet.com.
15.5 dB, DC-4GHz, 5 Bit Parallel Digital Attenuator – HRF-AT4510
The Honeywell HRF-AT4510 is a 5-bit digital attenuator designed to operate optimally in broadband communication system applica-
tions. The HRF-AT4510, developed with Honeywell’s patented SOI CMOS technology, is DC coupled, operates to 4 GHz and has
world-class step accuracy.
Features
• Very low DC power consumption
• Attenuation in steps from 0.5 dB to 15.5 dB
• Insertion loss of 2.0 dB at 2 GHz
• Single or dual power supply voltages
• Parallel data interface
• 50 Ohm compatible impedance
• Space saving LPCC™ surface mount packaging
The Honeywell HRF-AT4511 offers a serial interface and same level of high performance features as the HRF-AT4510.
Serial Digital Interface
With serial attenuators, our digital
interface uses a simple clock and
data shift register. Data in the shift
register is isolated from the data
latches during the shift operation.
After the proper data has been
shifted into the register, a rising
edge on the OE line will load the
value in the register into the latch-
es, where it is held, defining the
attenuation value, until the next
load. All bits of the latch are loaded
simultaneously.
Parallel Digital Interface
With parallel attenuators, our digital
interface pins are buffered, ESD
protected and level-shifted prior to
presentation to the RF attenuator
circuits. Buffering guarantees that
isolation of the digital feed through
and the required voltage levels are
presented to the RF section. Based
on the level applied to VSS, signals
may be level shifted to increase the
P1dB compression point.
Package Photo and HRF-AT4510 Eval Board
