Tuning Varactors: TV 2000 - 2500 Series
VHF Hyperabrupt Tuning Varactors
Description
The MicroMetrics VHF Tuning
Varactors are Ion-implanted highly
reproducible hyperabrupt diodes
which allow octave tuning of LC tanks
up to 500 MHz or, with a reduced 1.5
to 1 frequency ratio, straight-line
frequency tuning over a 3 to 8 volt
tuning range. These UHF diodes give a
full capacitance range of 20 to 200pF
at 4 volts bias, ultra-high Q and excel-
lent large signal handling capabilities,
along with a 2 to 1 capacitance ratio
by tuning from 9 to 20 volts of reverse
bias. Closely matched sets of all VHF
diodes are available along with "A"
suffix versions having 5% capacitance
tolerance at 4 volts of reverse bias.
Features
High Reliability, Silicon Planar
Hermetically Sealed
Octave Tuning or Ultra-High Q
Applications
Straight-Line Frequency Applications
Over 3 to 8 Volt Bias Range.
Low Cost Applications
Packaging
Hermetically Sealed
Notes: 1. Capacitance is measured in standard case style CS85.
T
uning V
aractors
30
Electrical Characteristics
Total Capacitance, Ct
1
F = 1 MHz
Tuning Ratio, Tr
(pF)
F = 1 MHz
Vr = 4 Vdc
Vr = 8 Vdc
Vr = 20 Vdc
C(4V)/C(8V)
C(4V)/C(20V)
MIN/MAX
MIN/MAX
MIN/MAX
MIN/MAX
MIN/MAX
18/22
7.5/10.5
3.1/3.9
-
5.4/6.6
19/21
7.8/9.2
3.1/3.9
-
5.4/6.6
18/22
7.5/10.5
-
1.8/2.7
-
19/21
7.8/9.2
-
2.0/2.7
-
18/22
7/11
-
-
-
45/55
18/25
7.3/9.2
-
5.6/6.9
47.5/52.5
18.4/21.6
7.3/9.2
-
5.6/6.9
45/55
18/25
-
1.8/2.8
-
47.5/52.5
18.4/21.6
-
2.2/2.8
-
45/55
17/26
-
-
-
100/120
39/55
15/19
-
5.9/7.3
105/115
41.5/48.6
15/19
-
5.9/7.3
100/120
39/55
-
1.8/2.8
-
105/115
41.5/48.6
-
2.15/2.8
-
100/120
36/58
-
-
-
140/170
55/80
22.5/28
-
5.8/7.1
147/163
59.8/70.2
22.5/28
-
5.8/7.1
140/170
55/80
-
1.8/2.8
-
147/163
59.8/70.2
-
2.1/2.7
-
140/170
50/85
-
-
-
180/220
70/105
29/36
-
5.8/7.1
190/210
78/92
29/36
-
5.8/7.1
180/220
70/105
-
1.8/2.8
-
190/210
78/92
-
2.0/2.7
-
180/220
65/110
-
-
-
MicroMetrics, Inc. 136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Maximum Ratings
Parameter
Symbol
Value
Units
Reverse Voltage
Vr
Same as Vbr
Volts
Forward Current
If
100
mA
Power Dissipation
Pd (25C)
250
mW
Operating Temperature Top
-55 to +150
C
Storage Temperature
Tstg
-65 to +200
C
Tuning Varactors: TV 2000 - 2500 Series
31
T
uning V
aractors
400
300
200
100
80
60
50
40
30
20
10
8
6
5
4
3
1
2
3
4 5 6
8 10
20 30
TOT
AL CAP
ACIT
ANCE (C
t)
(pF)
REVERSE VOLTAGE
(V)
TV2401
TV2301
TV2201
TV2001
TV2501
4000
3000
2000
1000
800
600
500
400
300
200
100
80
60
50
40
30
20
1
2
3
4 5 6
8 10
20 25
Q
(f = 50 MHz)
REVERSE VOLTAGE
(V)
Q=
1
2
f RSCT
TV2001
TV2201
TV2501
TV2401
TV2301
Typical Performance
MicroMetrics, Inc. 136 Harvey Road, Building C, Londonderry, NH 03053
Voice: 603-641-3800, Fax: 603-641-3500, Internet: www.micrometrics.com, E-mail: serv@micrometrics.com
Q
Vbr
Vr = 4 Vdc
(Vdc)
Ir
Part
F = 50 MHz
Ir = 10
Adc
(nAdc)
Number
Vr = 6 Vdc
Vr = 10 Vdc
Vr = 20 Vdc
MIN/TYP
MIN/TYP
TYP/MAX
TYP/MAX
TYP/MAX
160/220
22/30
-
-
15/100
TV2001
160/230
22/30
-
-
15/100
TV2001A
160/220
15/18
-
15/100
-
TV2002
160/220
15/18
-
15/100
-
TV2002A
80/120
8/12
50/250
-
-
TV2004
125/165
22/30
-
-
20/100
TV2201
125/165
22/30
-
-
20/100
TV2201A
125/165
15/18
-
20/100
-
TV2202
125/165
15/18
-
20/100
-
TV2202A
65/100
8/12
50/250
-
-
TV2204
80/110
22/30
-
-
30/100
TV2301
80/110
22/30
-
-
30/100
TV2301A
80/110
15/18
-
30/100
-
TV2302
80/110
15/18
-
30/100
-
TV2302A
40/60
8/12
50/250
-
-
TV2304
70/90
22/30
-
-
50/500
TV2401
70/90
22/30
-
-
50/500
TV2401A
70/90
15/18
-
50/500
-
TV2402
70/90
15/18
-
50/500
-
TV2402A
35/50
8/12
50/500
-
-
TV2404
60/80
22/30
-
-
70/500
TV2501
60/80
22/30
-
-
70/500
TV2501A
60/80
15/18
-
70/500
-
TV2502
60/80
15/18
-
70/500
-
TV2502A
30/45
8/12
50/500
-
-
TV2504
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