NJM2211
FSK DEMODULATOR / TONE DECODER
■ GENERAL DESCRIPTION
The NJM2211 is a monolithic phase-locked loop (PLL) system especially
designed for data communications. It is particularly well suited for FSK modem
applications, and operates over a wide frequency range of 0.01Hz to 300kHz. It
can accommodate analog signals between 2mV and 3V, and can interface with
conventional DTL, TTL and ECL logic families. The circuit consists of a basic
PLL for tracking an input signal frequency within the passband, a quadrature
phase detector which provides carrier detection, and an FSK voltage
comparator which provides FSK demodulation. External components are used
to independently set carrier frequency, bandwidth, and output delay.
■ FEATURES
● Wide Operating Voltage
● Wide frequency range
● DTL / TTL / ECL logic compatibility
● FSK demodulation with carrier-detector
● Wide dynamic range
● Adjustable tracking range
● Excellent temperature stability
● Package Outline
● Bipolar Technology
(4.5V to 20V)
(0.01Hz to 300kHz)
■ PACKAGE OUTLINE
NJM2211D
NJM2211M
(2mV to 3Vrms)
(±1% to ±80%)
(20ppm / °C typical)
DIP14, DMP14
■ APPLICATIONS
● FSK demodulation
● Data synchronization
● Tone decoding
● FM detection
● Carrier detection
■ PIN CONFIGURATION
NJM2211D
NJM2211M
Ver.2003-12-09
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