Passive Components: MMI 300 Series
Spiral Inductors
Description
The MicroMetrics MMI 300 series of
Spiral Inductors are formed by
photolithography and plating tech-
niques on quartz substrates. They
eliminate the need for hand forming
and "staking" of coil in hybrid circuits.
They provide uniformity, durability
and repeatability in circuit fabrication.
The coils are polyimide coated to pro-
tect from ambient contaminants, and
to eliminate the need for conformal
coating. Quartz substrates are rugged
and reduce dielectric losses. Chips
may be bonded using either conduc-
tive or non conductive epoxies, and
wire bonded with gold wire or ribbon
by thermocompression bonding.
Applications
The Spiral Inductors are ideally suited
for bias injection into oscillators,
amplifiers and microwave switches
(bias tees). They can also be used to
bias tuning varactors, PIN diodes,
transistors and monolithic circuits.
82
Passive
Components
Features
No Need for "Staking" Coil
Passivated Protective Coating Over Coil
Dimensional Uniformity
Planar Solid Structure Coil
Packaging
Chip
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
Chip Outline
GOLD BONDING PADS
.003 x .003
Dimensions in Inches
INSIDE DIAMETER,
di = .0094
.0002
di
C
A
B
DIM "A"
DIM "B"
DIM "C"
Part
MAX
MAX
MAX
Number
.040
.040
.012
MMI301
.045
.045
.012
MMI302
.050
.050
.012
MMI303
.065
.065
.012
MMI304
DIMENSIONS: INCHES
Ls
Rs
Cs
EQUIVALENT CIRCUIT
Passive Components: MMI 300 Series
Electrical Characteristics
Passive
Components
83
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
# of
Inductance
Series
Q
Test
Resonant
Turns
Ls(nH)
Resistance,Rs
At Ft
Frequency,Ft
Frequency,Fr
Part
MIN/TYP/MAX
DC
1GHz
MIN/MAX
(GHz)
(GHz)
Number
5
1
/
2
12/15/18
2.8
4.5
25/30
1.5
6.4
MMI301
7
1
/
2
24/30/36
4.0
6.0
26/30
1.2
5.3
MMI302
9
1
/
2
42/50/58
6.0
8.5
23/27
1.0
4.2
MMI303
12
1
/
2
67/75/83
8.5
15
20/24
1.0
3.0
MMI304
Notes:
Ls, Rs and Fr data measured using an HP 8510 network analyzer.
Inductor cross section is approximately 16 microns wide and 5 microns thick.
Maxium current rating: 250 mA.
Other values available upon request.
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