Nippon Wireless has developed the high-isolation SPDT switch GaAs MMIC NJG1666MD7, which is best suited for signal separation such as TV tuner, and is available now.
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In recent years, with the increase in equipment loaded with many tuners such as FM and 1seg, there is a demand for SPDT switches with high isolation for separating signals. In order to meet the requirements of the market, Nippon Wireless has developed a series of SPDT switches that are most suitable for signal separation. Devices such as STB* and TV tuner that require higher isolation use multiple SPDT switches or use discrete circuits. The NJG1666MD7 is an SPDT switch that has been developed to make it easier to separate signals from devices that require high isolation characteristics.
Feature 1 achieves high isolation and low insertion loss, completes high isolation circuit design, and reduces parasitic capacitance in IC chip and package, thus achieving high isolation (70dB@250MHz, z) and realizing Low insertion loss (0.50dB typ.@f=2200MHz) that is difficult to coexist at the same time.
Feature 2 is available in a small, ultra-thin package
The NJG1666MD7 uses a small, ultra-thin package EQFN14-D7 (1.6x1.6x0.397mm typ.), which achieves a 28% reduction in area compared to previous products (NJG1512HD3: 2.0 Ã— 1.8 Ã— 0.8mm), saving space on the mounting substrate. It can be miniaturized.
Feature 3 realizes high ESD (Electrostatic Discharge) with built-in protection device, which can achieve more than 200V in MM (Machine Model) machine discharge mode and 3000V or higher in HBM (Human Body Model) human body discharge mode. ESD (Electrostatic Discharge) is resistant to heat.
ãƒ»Low operating voltage VDD = +2.0 to +4.5V
ãƒ»Low switching voltage VCTL(H) = +1.3V min
ãƒ»Low current consumption 30Î¼A typ.
ãƒ»High isolation 70dB typ. @f=250MHz
60dB typ. @f=1000MHz
60dB typ. @f=2200MHz
ãƒ»Low insertion loss 0.40dB typ. @f=250MHz
0.45dB typ. @f=1000MHz
0.50dB typ. @f=2200MHz
ãƒ»High ESD withstand voltage Built-in ESD protection circuit ãƒ»Lead-free and halogen-free ãƒ»Small, ultra-thin package EQFN14-D7 (Package size: 1.6x1.6x0.397mm typ.)
Production plan / reference price
ãƒ»The supply of the sample: It has been started in December, 2009. Production: It is scheduled to start in January 2010, and it will produce 300,000 pieces per month. Reference price: Price per 100 yen or more
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