HRF-AT4510
15.5 dB, DC - 4GHz, 5 Bit Parallel Digital Attenuator
The Honeywell HRF-AT4510 is a 5-bit digital attenuator that is ideal for use
in broadband communication system applications that require accuracy,
speed and low power consumption. The HRF-AT4510 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. These attenuators are DC
coupled to improve lower operating frequency, frequency response and
reduce the number of DC bias points required.
FEATURES
Very Low DC Power Consumption
Attenuation In Steps From 0.5 dB To 15.5 dB
Single Positive Power Supply Voltage
Parallel Data Interface
50 Ohm Impedance
DC-coupled, bi-directional RF path
Space Saving VQFN Surface Mount Packaging
RF ELECTRICAL SPECIFICATIO NS @ + 25oC
Results @ VDD = 5.0 +/- 10%, VSS = 0 unless otherwise stated, Z0 = 50 Ohm s
Contact Honeywell for relative perform ance at other supply configurations
HR
F
-
AT
4
510 in VQFN Packa
g
e
Parameter Test Condition Frequency Minimum Typical Maximum Units
Insertion Loss
0.5 GHz
2.0 GHz
3.0 GHz
4.0 GHz
1.6
2.0
2.4
4.4
2.2
2.4
2.9
5.0
dB
dB
dB
dB
1dB Compression VSS = 0V, Input Power
VSS = -3V, Input Power 2.0 GHz
2.0 GHz 20
26 dBm
dBm
Input IP3 VSS = 0V
Two-tone inputs, up to +5 dBm @ 0
dB attenuation
2.0 GHz
36.0
dBm
Input IP3 Vss = -3V
Two-tone inputs, up to +5 dBm @
0 dB attenuation
2.0 GHz
>36.0
dBm
Return Loss Any Bit or Combination of Bits -11 -15 dB
Attenuation Accuracy
All attenuation states
All attenuation states
All attenuation states
All attenuation states
1.0 GHz
2.0 GHz
3.0 GHz
4.0 GHz
+/-(0.15 + 3% of programmed IL)
+/-(0.20 + 3% of programmed IL)
+/-(0.30 + 3% of programmed IL)
+/-(0.45 + 3% of programmed IL)
dB
dB
dB
dB
Trise, Tfall
Ton, Toff (Tpd) 10% To 90%
50% Cntl To 90% / 10%RF 10
15 nS
nS
HRF-AT4510
2 www.honeywell.com/microwave
FUNCTIONAL SCHEMATIC
DC ELECTRICAL SPECIFICATIO NS @ + 25°C
Parameter Minimum Typical Maximum Units
VDD 3.3 5.0 5.5 V
VSS -5.0 V
IDD <5.0 50 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 RATINGS1
Parameter Absolute Maximum Units
Input Power + 35 dBm
VDD +6.0 V
VSS -5.5 V
ESD Voltage 2 400 V
Operating Temperature -40 To +85 Degrees C
Storage Temperature -65 To +125 Degrees C
Moisture Sensitivity Level Level 1
Digital Inputs VDD+0.6 max to -0.6 min V
Note 1 - Operation of this device beyond any of these parameters may cause permanent damage.
Note 2 - Although the HRF-AT4510 contains ESD protection circuitry on all digital inputs, precautions should be taken to
ensure that the Absolute Maximum Ratings are not exceeded.
Latch-Up: Unlike conventional CMOS digital attenuators, Honeywell's HRF-AT4510 is immune to latch-up.
RF In RF Out
S4 S3 S0S1S2
8dB 4dB 2dB 1dB .5dB
ESD, Buffer, Level Shift
HRF-AT4510
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PIN CONFIGURATIONS
Pin Function Pin Function
1 VDD 13 GROUND
2 GROUND 14 GROUND
3 GROUND 15 RF OUTPUT
4 RF INPUT 16 GROUND
5 GROUND 17 VSS
6 GROUND 18 GROUND
7 GROUND 19 S0
8 GROUND 20 S1
9 GROUND 21 S2
10 GROUND 22 S3
11 GROUND 23 S4
12 GROUND 24 OPEN
Note: Bottom ground plate must be grou nded for proper RF performance.
TRUTH TABLE
S4 S3 S2 S1 S0 Output
0
0
0
0
0
1
1
0
0
0
0
1
0
1
0
0
0
1
0
0
1
0
0
1
0
0
0
1
0
1
0
0
0
0
1
Reference Input
0.5 dB
1 dB
2 dB
4 dB
8 dB
15.5 dB
Operation: Data on parallel input “S” pins are independently buffered and presented to the RF attenuator circuits.
"0" = CMOS Low, "1" = CMOS High.
HRF-AT4510
4 www.honeywell.com/microwave
PERFORMANCE CURVES
Insertion Loss
Typical AT4510 Reference Insertion Loss
-4.5
-4.0
-3.5
-3.0
-2.5
-2.0
-1.5
-1.0
-0.5
0.0
0.00 0.25 0.50 0.75 1.00 1.25 1.50 1.75 2.00 2.25 2.50 2.75 3.00 3.25 3.50 3.75
Frequency (GHz)
Insertion Loss (dB)
- 40 C
+25C
+ 85 C
3.3 V
Return Loss
Typical AT4510 Input Return Loss
-40.0
-35.0
-30.0
-25.0
-20.0
-15.0
-10.0
-5.0
0.0
0.00 0.50 1.00 1.50 2.00 2.50 3.00 3.50 4.00
Frequency (GHz)
R e tu rn L o s s (d B)
Attn 1dB Attn 2dB
Attn 3dB Attn 9dB
HRF-AT4510
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Step Accuracy
Typical AT4510 Step Accuracy
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Frequency (GHz)
Step Accuracy (dB)
0.5 dB 1 dB
2 dB 4 dB
8 dB 15.5 dB
8 dB
4 dB 1 dB
2dB
Relative Accuracy
Typical AT4510 Relative Accuracy
-0.5
-0.4
-0.3
-0.2
-0.1
0.0
0.1
0.2
0.3
0.4
0.5
0.0 0.5 1.0 1.5 2.0 2.5 3.0 3.5
Frequency (GHz)
Relative Accuracy (dB)
0.5 dB 1 dB
2 dB 4 dB
8 dB 15.5 dB 8 dB
15.5 dB
4 dB
0.5 dB
2 dB
1 dB
HRF-AT4510
6 www.honeywell.com/microwave
PACKAGE OUTLINE DRAWING
LEAD FINISH
The package leads are Ti n Lead (SnPb).
CIRCUIT APPLICATION INFORMATION
These attenuators require a DC referen ce to ground. They may not operate properly when AC co upled on both the RF
input and output without a DC ground reference provided as part of the circuit. See Application Note AN311 at
www.honeywell.com/microwave.
NOTES
1. Pin 1 ID can be a combination of a dot and/or chamfer.
2. Dimensions are in millimeters.
HRF-AT4510
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EVALUATION CIRCUIT 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 b e measuring attenuator performance in less than 10 minutes.
EVALUATION CIRCUIT BOARD LAYOUT DESIGN DETAILS
Item Description
PCB Impedance Matched Multi-Layer FR4
Attenuator HRF-AT4510 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
ORDERING INFORMATION
Ordering Number Delivery Method Units Per Shipment
HRF-AT4510-TR
HRF-AT4510-T
HRF-AT4510-E
Tape & Reel
Tape
Evaluation Board
3000 Units Per Reel
<3000
One Board Per Box
FIND OUT MORE
For more information on Honeywell’s Microwave Products visit us online at www.honeywell.com/microwave or contact
us at 800-323-8295 (763-954-2474 internationally).
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.
Honeywell
12001 High wa y 55
Plymouth, MN 55441
Tel: 800-323-8295
www.honeywell.com/microwave
Form #4510W
January 2007
©2007 Hone
y
well International Inc.
HRF-AT4510 Evaluation Board
HRF-AT4510
Evaluation Board
Top View
HRF-AT4510
Honeywell
VDD VSS
Gnd
RF In RF Out
S0
S1
S2S3S4
Open Gnd