HRF-AT4520
Preliminary
31.0 dB, DC-2.5GHz, 5 Bit Parallel Digital Attenuator
Features
x x x x x x Very Low DC Power Consumption Attenuation In Steps From 1 dB To 31 dB Single Or Dual Power Supply Voltages Parallel Data Interface 50 Ohm Compatible Impedance Space Saving LPCCTM Surface Mount Packaging
Product Description
The Honeywell HRF-AT4520 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-AT4520 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-AT4520 in LPCC™ Package
Parameter
Insertion Loss* 1dB Compression* 1dB Compression* Input IP3*
Test Condition
Frequency
DC – 1.0 GHz 2.0 GHz 2.5 GHz 0.5 – 2.5 GHz 0.5 – 2.5 GHz
Minimum
Typical
2.0 2.2 2.8 24 29 38 >38
Maximum
2.6 2.8 3.4
Units
dB dB dB dBm dBm dBm dBm dB dB dB dB nS nS mV
VSS = 0V, Input Power VSS = - VDD, Input Power
VSS = 0V Two-tone inputs 0.5 – 2.5 GHz Up To +5 dB @ 0 dB Attenuation 0.5 – 2.5 GHz Input IP3* Vss = - VDD Two-tone inputs Up To + 5 dB @ 0 dB Attenuation Return Loss* Any Combination of Bits DC – 2.5 GHz Attenuation Accuracy All attenuation states DC – 1.0 GHz (States < 8 dB are All attenuation states 2.0 GHz GBD*) All attenuation states 2.5 GHz Trise, Tfall* 10% To 90% Ton, Toff (Tpd) 50% Cntl To 90%/10%RF Transients In-Band 0.01uF Decoupling Capacitors Required On Power Supply Rails. *Guaranteed by design
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2002 4520W
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11 13 +/-(0.45 + 3.0% of programmed IL) +/-(0.55 + 4.5% of programmed IL) +/-(0.6 + 5.5% of programmed IL) 10 15 30
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Published February 2003
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RF Electrical Specifications @ + 25oC
HRF-AT4520
Preliminary
Functional Schematic
S4 S3 S2 S1 S0
ESD, Buffer, Level Shift
RF In
RF Out
16dB
8dB
4dB
2dB
1dB
DC Electrical Specifications @ + 25oC
Parameter Minimum VDD 3.3 1 VSS IDD Power Supply Current CMOS Logic level (0) 0 CMOS Logic level (1) VDD – 0.8 Input Leakage Current Note 1, the performance curves are for Vdd = +5.0 +/- 10% Typical 5.0 Maximum -5.0 35 0.8 VDD 10 Units V V uA V V uA
Absolute Maximum Ratings2
Parameter Input Power VDD VSS ESD Voltage Operating Temperature Storage Temperature ( Digital Inputs Absolute Maximum + 35 +6.0 -5.5 400 -40 To +85 -65 To +125 VDD+0.6 max to -0.6 min Units dBm V V V Degrees C Degrees C V
(Note 2) Operation of this Device beyond any of these parameters may cause permanent damage. Latch-Up: Unlike conventional CMOS digital attenuators, Honeywells' HRF-AT4520 is immune to latch-up. . ESD Protection: Although the HRF-AT4520 contains ESD protection circuitry on all digital inputs, conventional precautions should be taken to ensure that the Absolute Maximum Ratings are not exceeded. ________________________________________________________________________________________________________
Web Site: Email: 2002 4520W www.mysoiservices.com
[email protected] Published February 2003 Page 2 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295
HRF-AT4520
Preliminary
Package Outline Drawing
This package conforms to the LPCCTM 4 x 4 mm 24 lead body dimensions. See ASAT LPCC Marketing Outline Dwg. # DGMJ00004 Latest Rev. at http://www.asat.com for additional dimensional information.
Pin Configuration
Pin
1 2 3 4 5 6 7 8 9 10 11 12
Function
VDD GROUND GROUND RF INPUT GROUND GROUND GROUND GROUND GROUND GROUND GROUND GROUND
Pin
13 14 15 16 17 18 19 20 21 22 23 24
Function
GROUND GROUND RF OUTPUT GROUND VSS DIGITAL GROUND S0 S1 S2 S3 S4 OPEN
Note: Bottom ground plate must be grounded for proper RF performance.
Truth Table
S4 0 0 0 0 0 1 1 S3 0 0 0 0 1 0 1 S2 0 0 0 1 0 0 1 S1 0 0 1 0 0 0 1 S0 0 1 0 0 0 0 1 Output Reference Input 1 dB 2 dB 4 dB 8 dB 16 dB 31 dB
Operation: Data on parallel input “S” pins are independently buffered and presented to the RF attenuator circuits. "0" = CMOS Low, "1" = CMOS High.
________________________________________________________________________________________________________
Web Site: Email: 2002 4520W www.mysoiservices.com
[email protected] Published February 2003 Page 3 Honeywell Solid State Electronics Center 12001 State Highway 55 Plymouth, Minnesota 55441-4799 1-800-323-8295
HRF-AT4520
Preliminary
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 be measuring switch performance in less than 10 minutes..