SMV1770-079 Datasheet, PDF (1/2 Pages) Alpha Industries – Hyperabrupt Junction Tuning Varactor

Hyperabrupt Junction Tuning Varactor
Features
s Low Series Resistance
s High Capacitance Ratio
s Ultra Small Size SC-79 Package
s Designed for High Volume, Low Cost
Battery Applications
s Available in Tape and Reel Packaging
SMV1770-079
Description
The SMV1770-079 is a silicon hyperabrupt junction varactor
diode specifically designed for battery operation.The
specified high capacitance ratio and low R_S of this varactor
make it appropriate for low noise VCOs used at frequencies
in wireless systems to beyond 2.5 GHz. Applications include
low noise and wideband UHF and VHF VCO for GSM, PCS,
CDMA and analog phones.
Absolute Maximum Ratings
Characteristic
Forward Current (I_F)
Power Dissipation (P_D)
Storage Temperature (T_ST)
Operating Temperature (T_OP)
Value
20 mA
250 mW
-55°C to +150°C
-55°C to +125°C
Electrical Specifications at 25°C
Parameter
Reverse Current (I_R)
Capacitance (C_T)
Capacitance (C_T)
Capacitance Ratio (C_TR)
Series Resistance (R_S)
Breakdown Voltage (V_BR)
Condition
V_R = 8 V
C_T @ 0.5 V, V_R = 0.5 V, F = 1 MHz
C_T @ 2.5 V, V_R = 2.5 V, F = 1 MHz
C_T (0.5 V)/C_T (2.5 V)
V_R = 1 V, F = 470 MHz
I_R = 10 µA
Min.
22.1
7.7
2.3
12.0
Typ.
23.6
8.6
2.7
0.4
Max.
20.0
25.1
9.8
0.5
Unit
nA
pF
pF
Ω
V
Alpha Industries, Inc. [781] 935-5150 • Fax [617] 824-4579 • Email [e-mail] • www.alphaind.com
1
Specifications subject to change without notice. 1/01A