Description:

The NTE1536 is a CMOS LSI device for the 27MHZ Citizen’s Band Transceiver.

Function:

The NTE1536 composes a Phase Lock Loop (PLL) frequency synthesizer system with only one crystal for an AM CB transceiver.

Features:

Only one crystal is required for AM CB transceiver.

Two types of intermediate frequency can be selected:

IF1 = 10.695MHZ

IF2 = 9.785MHZ

Two types of lock monitor outputs:

LM: When PLL is locked/unlocked, LM is high/low level.

LM: When PLL is locked/unlocked, LM is low/high level.

The amplifier for low pass filter.

The amplifier for programmable counter input.

The detecting circuit for the mis–programming.

BCD code input to the programmable counter.

The buffer output for the reference oscillator.

The output for the half frequency of the reference oscillator.

The reference frequency oscillation amplifier (with feedback resistance).

Absolute Maximum Ratings: (TA = +25°C unless otherwise specified)

Maximum Supply Voltage, VDDmax –0.3 to +9.0V . . . . . . . . . . . . . .–0.3 to +9.0V

Input Voltage, VIN . . . . . . . . . . . . . . . . . . . . . . . . . . –0.3 to VDD+0.3V

Output Voltage, VOUT (Unload). . . . . . . . . . . . . . . –0.3 to VDD+0.3V

Operating Temperature Range, Topg . . . . . . . . . . . . . –30° to +70°C

Storage Temperature Range, Tstg . . . . . . . . . . . . . . –40° to +125°C