HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
31.5 dB, DC-4GHz, 6 Bit
Serial Digital Attenuator
Features
x Very Low DC Power Consumption
x Attenuation In Steps From 0.5 dB To 31.5 dB
x Single Or Dual Power Supply Voltages
x Serial Data Interface
x 50 Ohm Compatible Impedance
x Space Saving VQFN Surface Mount Packaging
Product Description
The Honeywell HRF-AT4611 is a 6-bit digital
attenuator that is ideal for use in broadband
communication system applications that require
accuracy, speed and low power consumption. The
HRF-AT4611 is manufactured with Honeywell's
patented Silicon On Insulator (SOI) CMOS
manufacturing technology, which provides the
performance of GaAs with the economy and
integration capabilities of conventional CMOS
HRF-AT4611 in VQFN Package
RF Electrical Specifications @ + 25oC
Results @ Vdd = 5.0 +/- 10%, Vss = 0 unless otherwise stated, Z0 = 50 Ohms
Contact Honeywell for relative performance at other supply configurations
Parameter Test Condition Frequency Minimum Typical Maximum Units
Insertion Loss DC – 1.0 GHz
2.5 GHz
3.0 GHz
4.0 GHz
2.5
3.0
3.6
5.5
2.9
3.5
3.9
5.8
dB
dB
dB
dB
1dB Compression VSS = 0V, Input Power DC – 2.0 GHz 24 dBm
1dB Compression VSS = - VDD, Input Power DC – 2.0 GHz 29 dBm
Input IP3 VSS = 0V Two-tone inputs
Up To +5 dB @ 0 dB
Attenuation
DC – 2.0 GHz 38 dBm
Input IP3 Vss = - VDD
Two-tone inputs Up To + 5
dBm @ 0 dBm Attenuation
DC – 2.0 GHz >38 dBm
Return Loss* Any Bit or Combination DC - 3.0 GHz 11 dB
Attenuation Accuracy All attenuation states
All attenuation states
All attenuation states
All attenuation states
DC – 1.0 GHz
2.5 GHz
3.0 GHz
4.0 GHz
+/-(0.3 + 3% of programmed IL)
+/-(0.3 + 3% of programmed IL)
+/-(0.4 + 5% of programmed IL)
+/-(0.4 + 5.5% of programmed IL)
dB
dB
dB
dB
Trise, Tfall*
Ton, Toff (Tpd)
Transients
10% To 90%
50% Cntl To 90%/10%RF
In-Band
10
15
30
nS
nS
mV
T clock Period (Tprd)* T high / T low = ½ minimum clock period 50 nS
T data set up (Tsup)* Set up to rising edge of clock 5 nS
T data hold (Thld)* Data hold after rising edge of clock 2 nS
T latch set up (Tlsup*) Data set up to rising edge of OE 5 nS
0.01uF Decoupling Capacitors Required On Power Supply Rails.
*B
y
desi
g
n
12001 State Highway 55
2004 4611W Published August 2004 Page 1 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Functional Schematic
RF In RF Out
CLK DATA OE
16dB 8dB 4dB 2dB 1dB .5dB
ESD, Registers, Buffer, Level Shift
DC Electrical Specifications @ + 25oC
Parameter Minimum Typical Maximum Units
VDD 3.315.0 5.5 V
VSS -5.0 V
IDD Power Supply Current 35 uA
CMOS Logic level (0) 0 0.8 V
CMOS Logic level (1) VDD – 0.8 VDD V
Input Leakage Current 10 uA
Note 1, the performance curves are for Vdd = +5.0 +/- 10%
Absolute Maximum Ratings2
Parameter Absolute Maximum Units
Input Power + 35 dBm
VDD +6.0 V
VSS -5.5 V
ESD Voltage 400 V
Operating Temperature -40 To +85 Degrees C
Storage Temperature -65 To +125 Degrees C
Digital Inputs VDD+0.6 max to -0.6 min V
(Note 2) Operation of this Device beyond any of these parameters may cause permanent damage.
Latch-Up: Unlike conventional CMOS digital attenuators, Honeywell's HRF-AT4611 is immune to latch-up.
ESD Protection: Although the HRF-AT4611 contains ESD protection circuitry on all digital inputs, conventional precautions should
be taken to ensure that the Absolute Maximum Ratin
g
s are not exceeded.
12001 State Highway 55
2004 4611W Published August 2004 Page 2 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Package Outline Drawing
Pin Configuration
Serial Data Load
Serial data is shifted into the register on the rising edge of clock, MSB first. The OE rising edge must occur prior to
any additional rising clock edges. See the Electrical Spec Table for AC parameters.
This package conforms to the JEDEC Standard MO-220, 4 x 4 mm 16 lead body
dimensions.
See Application Note 310, VQFN Surface Mount Application, on our web site at
www.mysoiservices.com for assembly recommendations.
Pin Function Pin Function
1 VDD 9 GROUND
2 GROUND 10 RF OUTPUT
3 RF INPUT 11 GROUND
4GROUND12 VSS
5 GROUND 13 GROUND
6 GROUND 14 OE
7 GROUND 15 CLK
8GROUND16 DATA
Note: Bottom ground plate must be grounded for proper RF performance.
12001 State Highway 55
2004 4611W Published August 2004 Page 3 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Truth Table
S5 S4 S3 S2 S1 S0 Output
0
0
0
0
0
0
1
1
0
0
0
0
0
1
0
1
0
0
0
0
1
0
0
1
0
0
0
1
0
0
0
1
0
0
1
0
0
0
0
1
0
1
0
0
0
0
0
1
Reference Input
0.5 dB
1 dB
2 dB
4 dB
8 dB
16 dB
31.5 dB
Operation: Data on serial input D is clocked into internal registers on the low to high transition of the Clock signal (CK). The register
output is enabled when Output Enable (OE) is in the low state. "0" = CMOS Low, "1" = CMOS High.
Evaluation Circuit Board
HRF-AT4611 Evaluation Board
Honeywell's evaluation board provides
an easy to use method of evaluating the
RF performance of our attenuator.
Simply connect power, DC and RF
signals to be measuring attenuato
r
performance in less than 10 minutes.
Evaluation Circuit Board Layout Design Details
Item Description
PCB Impedance Matched Multi-Layer FR4
Attenuator HRF-AT4611 Digital Attenuator
Chip Capacitor Panasonic Model ECU-E1C103KBQ Capacitor, .01uf 0402 10% 16V
RF Connector Johnson Connectors Model 142-0701-801 SMA RF Coaxial Connector
DC Pin Mil-Max Model 800-10-064-10-001 Header Pins
12001 State Highway 55
2004 4611W Published August 2004 Page 4 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Evaluation Circuit Board Connections
HRF-AT4611
Evaluation Board
Top View
HRF-AT4611
Honeywell
RF In RF Out
VDD
VSS
Gnd
Gnd Data
CLK
OE
Refer to HRF-AT4611 Product Spec. for Serial Data Load Information
(http://www.ssec.honeywell.com/microwave/products/attenuators.html)
Performance Curves
Insertion Loss
This Insertion Loss curve represents
the Min/Max conditions for the “0” pass
state versus all processing and
temperature conditions. The Min case
is at –40C with the “Fast” processing
conditions. The Max case is at +85C
with the “Slow” processing conditions.
A
ll other combinations fall within that
band. The typical 25C case is labeled
+25C TT.
12001 State Highway 55
2004 4611W Published August 2004 Page 5 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Return Loss
This Return Loss set of curves represents
the combination of all Return Loss cases fo
r
all attenuation settings. All cases are bette
r
than –14dB Return Loss at 4GHz.
Step Accuracy
AT4611 Step Accuracy Vs Attenuation State
-1.5
-1.3
-1.1
-0.9
-0.7
-0.5
-0.3
-0.1
0.1
0.3
0.5
-3 2 7 12 17 22 27 32
Programmed Attenuation (dB)
Step To Step Delta (dB)
StepAcc@0.01GHz
StepAcc@0.1GHz
StepAcc@0.5GHz
StepAcc@1GHz
StepAcc@2GHz
StepAcc@3GHz
StepAcc@4GHz
12001 State Highway 55
2004 4611W Published August 2004 Page 6 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
Relative Accuracy
Compression
The P1dB curve shows all states with a
P1dB compression at approximately 23dB
input power. The conditions for this curve
are Vdd = +5.0v and Vss = 0v. For highe
r
P1dB compression values, supply Vss
with a negative voltage as shown in the
next curve.
AT4611 Relative Accuracy Vs Attenuation
-1.5
-1
-0.5
0
0.5
1
1.5
-3 2 7 12 17 22 27 32
Programmed Attenuation (dB)
Relative Accuracy (dB)
RelAcc@0.01GHz
RelAcc@0.1GHz
RelAcc@0.5GHz
RelAcc@1GHz
RelAcc@2GHz
RelAcc@3GHz
RelAccMax
RelAccMin
12001 State Highway 55
2004 4611W Published August 2004 Page 7 Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4611
________________________________________________________________________________________________________
Web Site: www.mysoiservices.com Honeywell
Email: mysoiservices@honeywell.com Solid State Electronics Center
The P1dB curve shows all states with a
P1dB compression at approximately 31dB
input power. The conditions for this curve
are Vdd = +5.0v and Vss = -5.0v.
Ordering Information
Ordering Number Delivery Method Units Per Shipment
HRF-AT4611-TR
HRF-AT4611-E
On Tape And Reel3
On Individual Engineering Evaluation Board
2500 Units per Reel
One Board Per Box
(Note 3) Call Honeywell for details
Honeywell reserves the right to make changes to improve reliability, function or design. Honeywell does not assume
any liability arising out of the application or use of any product or circuit described herein; neither does it convey any
license under its patent rights nor the rights of others.
12001 State Highway 55
2004 4611W Published August 2004 Page 8 Plymouth, Minnesota 55441-4799
1-800-323-8295
