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.
Tuning Varactors
30
Electrical Characteristics
Total Capacitance, Ct1
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 VrSame as Vbr Volts
Forward Current If100 mA
Power Dissipation Pd (25°C) 250 mW
Operating Temperature Top -55 to +150 °C
Storage Temperature Tstg -65 to +200 °C
Tuning Varactors: TV 2000 - 2500 Series
31
Tuning Varactors
400
300
200
100
80
60
50
40
30
20
10
8
6
5
4
31 2 3 4 5 6 8 10 20 30
TOTAL CAPACITANCE (Ct)
(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
2012 3 4 5 6 8 10 20 25
Q
(f = 50 MHz)
REVERSE VOLTAGE
(V)
Q=1
2 π f RSCT
TV2001
TV2201
TV2501
TV2401
TV2301
Typical Perfor mance
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
QV
br
Vr= 4 Vdc (Vdc) IrPart
F = 50 MHz Ir= 10 µAdc (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
