HRF-AT4521
Preliminary
31.0 dB, DC-4GHz, 5 Bit
Serial Digital Attenuator
Features
•
•
•
•
•
•
Very Low DC Power Consumption
Attenuation In Steps From 1 dB To 31 dB
Single Or Dual Power Supply Voltages
Serial Data Interface
50 Ohm Compatible Impedance
TM
Space Saving LPCC Surface Mount Packaging
Product Description
The Honeywell HRF-AT4521 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-AT4521 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-AT4521 in LPCC™ Package
RF Electrical Specifications @ + 25
o
C
Parameter
Insertion Loss
Test Condition
Frequency
DC – 0.5 GHz
2.0 GHz
3.0 GHz
4.0 GHz
DC – 2.0 GHz
DC – 2.0 GHz
Minimum
Typical
1.8
2.8
--
--
24
29
Maximum
Units
dB
dB
dB
dB
dBm
dBm
1dB Compression
1dB Compression
Input IP3
VSS = 0V, Input Power
VSS = - VDD, Input Power
VSS = 0V Two-tone inputs
DC – 2.0 GHz
38
dBm
Up To +5 dBm @ 0 dBm
Attenuation
Input IP3
V
ss
= - V
DD
DC – 2.0 GHz
>38
dBm
Two-tone inputs Up To + 5
dBm @ 0 dBm Attenuation
Return Loss*
Any Combination of Bits
DC - 4.0 GHz
11
dB
Attenuation Accuracy
All attenuation states
DC – 1.0 GHz
+/-(0.3 + 3% of programmed IL)
dB
All attenuation states
2.0 GHz
+/-(0.3 + 3% of programmed IL)
dB
All attenuation states
3.0 GHz
+/-(0.4 + 4% of programmed IL)
dB
All attenuation states
4.0 GHz
+/-(0.5 + 6% of programmed IL)
dB
Trise, Tfall*
10% To 90%
TBD
nS
Ton, Toff (Tpd)
50% Cntl To 90%/10%RF
nS
Transients
In-Band
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 falling edge of OE
5
nS
0.01uF Decoupling Capacitors Required On Power Supply Rails.
________________________________________________________________________________________________________
*By design
Web Site:
www.mysoiservices.com
Honeywell
Email:
mysoiservices@honeywell.com
Solid State Electronics Center
12001 State Highway 55
2002 4521W
Published June 2002 Page 1
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
Functional Schematic
DC Electrical Specifications @ + 25
o
C
Parameter
V
DD
V
SS
I
DD
Power Supply Current
CMOS Logic level (0)
0
CMOS Logic level (1)
V
DD
– 0.8
Input Leakage Current
Note 1, the performance curves are for Vdd = +5.0 +/- 10%
Minimum
3.3
1
Typical
5.0
Maximum
-5.0
2
0.8
V
DD
10
Units
V
V
mA
V
V
uA
Absolute Maximum Ratings
2
Parameter
Input Power
V
DD
V
SS
ESD Voltage
Operating Temperature
Storage Temperature
(
Digital Inputs
Absolute Maximum
+ 35
+6.0
-5.5
400
-40 To +85
-65 To +125
V
DD
+0.6 max to V
SS
-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-AT4521 is immune to latch-up.
.
ESD Protection:
Although the HRF-AT4521 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 4521W
www.mysoiservices.com
mysoiservices@honeywell.com
Published June 2002
Page 2
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
Package Outline Drawing
This package conforms to the LPCC
TM
4 x 4 mm 16 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
Function
VDD
GROUND
RF INPUT
GROUND
GROUND
GROUND
GROUND
GROUND
Pin
9
10
11
12
13
14
15
16
Function
GROUND
RF OUTPUT
GROUND
VSS
DIGITAL GROUND
OE
CLK
DATA
Serial Data Load
Serial data is shifted into the register on the rising edge of clock, MSB first. The OE falling edge must occur prior to
any additional rising clock edges. See the Electrical Spec Table for AC parameters
.
________________________________________________________________________________________________________
Web Site:
Email:
2002 4521W
www.mysoiservices.com
mysoiservices@honeywell.com
Published June 2002
Page 3
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
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
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.
HRF-AT4521 Evaluation Board
Evaluation Circuit Board Layout Design Details
Item
PCB
Attenuator
Chip Capacitor
RF Connector
DC Pin
Description
Impedance Matched Multi-Layer FR4
HRF-AT4521 Digital Attenuator
Panasonic Model ECU-E1C103KBQ Capacitor, .01uf 0402 10% 16V
Johnson Connectors Model 142-0701-801 SMA RF Coaxial Connector
Mil-Max Model 800-10-064-10-001 Header Pins
________________________________________________________________________________________________________
Web Site:
Email:
2002 4521W
www.mysoiservices.com
mysoiservices@honeywell.com
Published June 2002
Page 4
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
Evaluation Circuit Board Connections
Digital
VDD
CLK
Gnd
Gnd
Data
OE
VSS
RF In
HRF-AT4521
Evaluation Board
Top View
RF Out
HRF-AT4521
Honeywell
“0” = CMOS Low, “1” = CMOS High
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. All other combinations fall
within that band. The typical 25C
case is labeled +25C TT.
________________________________________________________________________________________________________
Web Site:
Email:
2002 4521W
www.mysoiservices.com
mysoiservices@honeywell.com
Published June 2002
Page 5
Honeywell
Solid State Electronics Center
12001 State Highway 55
Plymouth, Minnesota 55441-4799
1-800-323-8295
传感器
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