Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 1
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
P
RODUCT
P
REVIEW
DESCRIPTION
DESCRIPTIONDESCRIPTION
DESCRIPTION
The UM9301 PIN Diode utilizes special
overall chip geometry with an extremely
thick intrinsic “I” region, to offer unique
capabilities in both RF switch and
attenuator applications.
Volume production also makes the diode
an economical choice suitable for many
commercial low power equipments.
The UM9301 has been designed for use
in bridged TEE attenuator circuits
commonly utilized for gain and slope
control in CATV amplifiers.
Low distortion and high dynamic range are
characteristic of the diodes’ outstanding
performance.
The UM9301 is also appropriate for
switch applications, when little or no bias
voltage is available. Frequent applications
occur in portable 12 volt-powered
communications equipments, operating at
frequencies as low as 2 MHz.
IMPORTANT: For the most current data, consult MICROSEMI’s website: http://www.microsemi.com
ABSOLUTE MAXIMUM RATINGS AT 25º C
(UNLESS OTHERWISE SPECIFIED)
Rating Symbol Value Unit
Reverse Voltage VR 75 Volts
Reverse Current IR 10 µA
Average Power Dissipation (1, 2) PA 1.0 Watts
Storage Temperature T stg -65 to 175 ºC
Operating Temperature T op -65 to 175 ºC
UM9301
UM9301SM
(1) Mounted on 2” square by 0.06’ thick FR4 board with a 1” x 1” square 2-ounce copper pattern..
(2) Lead ½ inch. (12.7mm) Total to 25°C Contact.
KEY FEATURES
KEY FEATURES KEY FEATURES
KEY FEATURES
Specified low distortion
Low distortion properties at low
reverse bias
Resistance specified at 3 current
points
High reliability fused-in-glass
construction
APPLICATIONS/BENEFIT
APPLICATIONS/BENEFITAPPLICATIONS/BENEFIT
APPLICATIONS/BENEFITS
SS
S
Little or no Bias required.
Operates as low as 2MHZ.
Available in leaded or surface
mount packages.
UM9301SM
U
UM
M9
93
30
01
1/
/U
UM
M9
93
30
01
1S
SM
M
Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page 2
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
P
RODUCT
P
REVIEW
ELECTRICAL PARAMETERS @ 25°C (unless otherwise specified)
Parameter Symbol Conditions Min Typ. Max Units
Off Characteristics
Diode Resistance RS
I = 100 mA; f = 100 MHZ
I = 1 mA; f = 100 MHZ
I = 0.01 mA; f = 100 MHZ
3000
1.7
80
5000
3.0
150 Ω
Current for RS = 75 Ω IR R
S f = 100 MHZ 0.5 1.1 2.0 mA
Return Loss I
Frequency Range: 10-300MHZ
RS = 75 Ω @ 100MHZ
Diode Terminates 75 Ω line
25
dB
f1 = 10 MHZ; f2 = 13 MHZ
P = 50 dBmV; See Test Circuit 55 50 -dB
Second Order Distortion V F1 = 67 MHZ; f2 = 77 MHZ
P = 50 dBmV; See Test Circuit 70 -dB
F1 = 10 MHZ; F2 = 13 MHZ
P = 50 dBmV; See Test Circuit 75 65 -dB
Third Order Distortion V Triple Beat; 205 +67 –77MHZ
P = 50 dBmV; See Test Circuit 95 -dB
Cross Modulation
Distortion V
12 Channel Test
P = 50 dBmV; See Test Circuit
Dix Hills Test Set
75 -dB
Reverse Current IR V = 75 V 10 µA
Carrier Lifetime τ I = 10 mA 4.0 µs
Dynamic characteristics
Capacitance CT V = 0V; f = 100 MHZ 0.8 pF
PRODUCT PRELIMINARY DATA – Information contained in this document is pre-production
data, and is proprietary to Microsemi Corp. It may not be modified in any way without the express
written consent of Microsemi Corp. Product referred to herein is not guaranteed to achieve
preliminary or production status and product specifications, configurations, and availability may
change at any time.
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Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page
3
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
P
RODUCT
P
REVIEW
E
EL
LE
EC
CT
TR
RI
IC
CA
AL
L
Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page
4
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
P
RODUCT
P
REVIEW
UM9301SM
UM9301
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Microsemi
75 Technology Drive, Lowell, MA. 01851, 978-442-5600, Fax: 978-937-3748
Page
5
Copyright 2005
Rev. A, 2005-07-05
WWW.Microsemi .COM
UM9301/UM9301SM
Commercial Attenuator Diode
P
RODUCT
P
REVIEW
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