HRF-AT4521
Preliminary
________________________________________________________________________________________________________
Web Site:
www.mysoiservices.com
Honeywell
Email:
mysoiservices@honeywell.com
Solid State Electronics Center
31.0 dB, DC-2.5GHz, 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
Space Saving LPCC
TM
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 LPCCTM Package
RF Electrical Specifications @ + 25
o
C
Parameter
Test Condition
Frequency
Minimum
Typical
Maximum
Units
Insertion Loss*
DC 1.0 GHz
2.0 GHz
2.5 GHz
2.0
2.2
2.8
2.6
2.8
3.4
dB
dB
dB
1dB Compression*
VSS = 0V, Input Power
DC 2.5 GHz
24
dBm
1dB Compression*
VSS = - VDD, Input Power
DC 2.5 GHz
29
dBm
Input IP3*
VSS = 0V Two-tone inputs
Up To +5 dBm @ 0 dBm
Attenuation
DC 2.5 GHz
38
dBm
Input IP3*
V
ss
= - V
DD
Two-tone inputs Up To + 5
dBm @ 0 dBm Attenuation
DC 2.5 GHz
>38
dBm
Return Loss*
Any Combination of Bits
DC 2.5 GHz
11
13
dB
Attenuation Accuracy
(States < 8 dB are
GBD*)
All attenuation states
All attenuation states
All attenuation states
DC 1.0 GHz
2.0 GHz
2.5 GHz
+/-(0.45 + 3.0% of programmed IL)
+/-(0.55 + 4.5% of programmed IL)
+/-(0.6 + 5.5% of programmed IL)
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 = 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.
**Guaranteed by design
12001 State Highway 55
2002 4521W
Published February 2003 Page 1
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
________________________________________________________________________________________________________
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
ESD, Registers, Buffer, Level Shift
DC Electrical Specifications @ + 25
o
C
Parameter
Minimum
Typical
Maximum
Units
V
DD
3.3
1
5.0
V
V
SS
-5.0
V
I
DD
Power Supply Current
35
uA
CMOS Logic level (0)
0
0.8
V
CMOS Logic level (1)
V
DD
0.8
V
DD
V
Input Leakage Current
10
uA
Note 1, the performance curves are for Vdd = +5.0 +/- 10%
Absolute Maximum Ratings
2
(
.
Parameter
Absolute Maximum
Units
Input Power
+ 35
dBm
V
DD
+6.0
V
V
SS
-5.5
V
ESD Voltage
400
V
Operating Temperature
-40 To +85
Degrees C
Storage Temperature
-65 To +125
Degrees C
Digital Inputs
V
DD
+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, 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.
12001 State Highway 55
2002 4521W
Published February 2003 Page 2
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
___
____________
Web Site:
www.mysoiservices.com
Honeywell
Email:
mysoiservices@honeywell.com
Solid State Electronics Center
12001 State Highway 55
2002 4521W
Published February 2003 Page 3
Plymouth, Minnesota 55441-4799
1-800-323-8295
Package Outline Drawing
Pin Configuration
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
Function
Pin
Function
1
VDD
9
GROUND
2
GROUND
10
RF OUTPUT
3
RF INPUT
11
GROUND
4
GROUND
12
VSS
5
GROUND
13
DIGITAL GROUND
6
GROUND
14
OE
7
GROUND
15
CLK
8
GROUND
16
DATA
Note: Bottom ground plate must be grounded for proper RF performance.
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
.
_________________________________________________________________________________________
HRF-AT4521
Preliminary
________________________________________________________________________________________________________
Web Site:
www.mysoiservices.com
Honeywell
Email:
mysoiservices@honeywell.com
Solid State Electronics Center
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
1 dB
2 dB
4 dB
8 dB
16 dB
31 dB
Evaluation Circuit Board
HRF-AT4521 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 switch performance in less than 10
minutes.
Evaluation Circuit Board Layout Design Details
Item
Description
PCB
Impedance Matched Multi-Layer FR4
Attenuator
HRF-AT4521 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
2002 4521W
Published February 2003 Page 4
Plymouth, Minnesota 55441-4799
1-800-323-8295
HRF-AT4521
Preliminary
________________________________________________________________________________________________________
Web Site:
www.mysoiservices.com
Honeywell
Email:
mysoiservices@honeywell.com
Solid State Electronics Center
Evaluation Circuit Board Connections
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.
HRF-AT4521
Evaluation Board
Top View
HRF-AT4521
Honeywell
RF In
RF Out
"0" = CMOS Low, "1" = CMOS High
VDD
VSS
Digital
Gnd
Gnd
Data
CLK
OE
12001 State Highway 55
2002 4521W
Published February 2003 Page 5
Plymouth, Minnesota 55441-4799
1-800-323-8295
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