Tuning Varactors: TV 2100, 2800 Series
UHF Hyperabrupt Tuning Varactors
Description
The MicroMetrics UHF Tuning
Varactors offer higher Q’s than their
VHF counterparts, but have slightly
lower capacitance ratios. These diodes
are excellent for octave tuning up to
800 MHz and for straight-line-frequency
tuning between 3 and 8 volts of bias.
They also achieve exceptionally high Q
values and large signal capabilities
when tuned between 9 and 20 volts,
which extends their useful range to
over 1 GHz. Closely matched sets are
available, designated by suffix “A”.
Features
•High Reliability, Silicon Planar
•Octave Tuning at UHF
•Octave Tuning at VHF
•Straight-Line Frequency Applications
over 3 to 8 Volt Bias Range
•Low Cost Applications
Packaging
•Hermetically Sealed
Tuning Varactors
28
Notes:
1. Capacitance is measured in standard case style CS85.
Total Capactiance, Ct1Tuning Ratio Tr
F = 1 MHz F = 1 MHz
(pF)
Vr = 3 Vdc Vr = 8 Vdc Vr = 20 Vdc C(3V)/C(20V) C(3V)/C(8V)
MIN/MAX MIN/MAX MIN/MAX MIN/MAX MIN/MAX
10.5/12.5 4.3/5.7 2.0/2.3 5.0/5.8 -
10.9/12.1 4.6/5.4 2.0/2.3 5.0/5.8 -
10.5/12.5 4.3/5.7 2.0/2.4 4.7/5.5 -
10.9/12.1 4.6/5.4 2.0/2.4 4.7/5.5 -
10.5/12.5 4.3/5.7 - - 1.9/2.7
10.9/12.1 4.6/5.4 - - 2.0/2.6
10.5/12.5 - - - -
25/31 10/13.5 4.5/5.1 5.2/6.1 -
26.5/29.5 11/13 4.5/5.1 5.2/6.1 -
25/31 10/13.5 4.5/5.3 4.9/5.8 -
26.5/29.5 11/13 4.5/5.3 4.9/5.8 -
25/31 10/13.5 - - 1.9/2.8
26.5/29.5 11/13 - - 2.0/2.7
25/31 - - - -
Electrical Characteristics
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
Tuning Varactors: TV 2100, 2800 Series
29
Tuning Varactors
QV
br IrPart
Vr= 3 Vdc (Vdc) (nAdc) Number
F = 50 MHz Ir = 10 µAdc
Vr= 6 Vdc Vr= 10 Vdc Vr= 20 Vdc
MIN/TYP MIN/TYP TYP/MAX TYP/MAX TYP/MAX
300/350 22/30 - - 10/100 TV2101
300/350 22/30 10/100 TV2101A
200/300 22/30 - - 10/100 TV2102
200/300 22/30 10/100 TV2102A
200/300 15/18 - 50/500 - TV2103
200/300 15/18 - 50/500 - TV2103A
100/150 8/12 50/500 - - TV2104
200/250 22/30 - - 20/100 TV2801
200/250 22/30 - - 20/100 TV2801A
150/200 22/30 - - 20/100 TV2802
150/200 22/30 - - 20/100 TV2802A
150/200 15/18 - 50/500 - TV2803
150/200 15/18 - 50/500 - TV2803A
75/100 8/12 50/500 - - TV2804
100 3245681020301
200
300
400
500
600
800
1000
2000
3000
4000
Q
(f=50 MHz)
Q=1
2 π f RSCT
TV2101
TV2801
REVERSE VOLTAGE
(V)
1
3
2
4
6
8
10
20
30
40
50
60
3245681020301
TOTAL CAPACITANCE (Ct)
(pF)
REVERSE VOLTAGE
(V)
TV2101
TV2801
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
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
