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DX4044AAFE
Preliminary Data Sheet August 1998 LUCDA4044 Phase Frequency Detector Features Applications s Typical propagation delay 9.0 ns (through phase detector) s Includes charge pump and amplifier s Available in 14-pin DIP or SONB R 1 D1 2 V 3 13 U1 PU 4 UF 5 D2 6 9 AIN GND 7 8 AOU CHARGE PUMP s Clock recovery The LUCDA4044 consists of two digital phase detectors, a charge pump, and an amplifier. In combination with a voltage-controlled multivibrator, this device is useful in a broad range of phase-locked loop (PLL) applications. The circuit accepts TTL waveforms at the R and V inputs and generates an error voltage that is proportional to frequency and/or phase difference. 12 U2 PHASE FREQUENCY DETECTOR #2 Frequency synthesizers Description 14 VCC PHASE FREQUENCY DETECTOR #1 s 11 PD 10 DF 12-3519F Figure 1. Functional Diagram Phase detector #1 is intended for use in systems requiring zero frequency and phase at lock. Phase detector #2 is used if quadrature lock is desired. Phase detector #2 can also be used to indicate that the main loop (utilizing phase detector #1) is out of lock. This LUCDA4044 is a direct replacement for the Motorola® MC4044.
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