High-Density Passives
LC Networks
 Gennum also offers nitride based capacitors integrated with high quality inductors to form LC networks. The low k dielectric materials and thick metal layers provide high Q values while still being real estate efficient. A wide range of high precision capacitor and inductor networks needed for high frequency applications can fabricated on the same chip. Applications include GSM and other cellular bands such as Bluetooth (2.45GHz) and
WLAN (5 GHz).
| Table 1: Inductor parameters |
|
Inductor
|
Q (1GHz)
|
Q (2.5GHz)
|
Q (5GHz) |
FSR (GHz) |
|
| 1nH |
22 |
35 |
70 |
>20 |
| 3nH |
15 |
30 |
45 |
11.5 |
| 10nH |
16 |
23 |
12 |
6 |
| 27nH |
12.5 |
4 |
6 |
3.5 |
|
| Table 2: Capacitor Parameters (Nitride Based) |
|
Inductor
|
Q (1GHz)
|
Q (2.5GHz)
|
Q (5GHz) |
FSR (GHz) |
|
| 1pF |
20 |
25 |
35 |
13 |
| 2pF |
32 |
50 |
65 |
9.5 |
| 4pF |
30 |
50 |
65 |
7 |
| 10pF |
25 |
30 |
52 |
4.5 |
| 220pF |
8.5 |
2 |
2 |
1 |
|
Inductor tolerance is +/-3% 3-sigma.
Capacitor tolerance is +/- 5% 3-sigma.
Shown is a customized RF passive component used for a Bluetooth application. The component features a 2.45 GHz bandpass filter, 180 degree balun, loop filter capacitor, and an array of decoupling capacitors and matching networks.
Contact us and let us know your LC network needs.
|
