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The NE564 is a versatile, high guaranteed frequency phase-locked loop designed for operation up to 50MHz. NE564 consists of a VCO, limiter, phase comparator, and post-detection processor.
NE564 Pinout
NE564 Pin Configuration
| Pin No | Pin Name | Description |
|---|---|---|
| 1 | V+ | Positive Voltage Pin |
| 2 | LOOP GAIN CONTROL | Loop Gain Control Pin |
| 3 | IN TO PHASE COMP FROM VCO | Input To Phase Compensation From VCO Pin |
| 4 | LOOP FILTER | Loop Filter Pin |
| 5 | LOOP FILTER | Loop Filter Pin |
| 6 | FM/RF IN | FM/RF Input Pin |
| 7 | BIAS FILTER | Bias Filter Pin |
| 8 | GND | Ground Pin |
| 9 | VCO OUT TTL | VCO Output TTL Pin |
| 10 | V+ | Positive Voltage Pin |
| 11 | VCO OUT 2 | VCO Output Pin 2 |
| 12 | FREQ: SET CAP | Frequency Set Capacitor Pin |
| 13 | FREQ: SET CAP | Frequency Set Capacitor Pin |
| 14 | ANALOG OUT | Analog Output Pin |
| 15 | HYSTERESIS SET | Hysteresis Set Pin |
| 16 | TTL OUT | TTL Output Pin |
NE564 Features
- Operation with single 5V supply
- TTL-compatible inputs and outputs
- Guaranteed operation to 50MHz
- External loop gain control
- Reduced carrier feedthrough
- No elaborate filtering needed in FSK applications
- Can be used as a modulator
- Variable loop gain (externally controlled)
Application
- High speed modems
- FSK receivers and transmitters
- Frequency Synthesizers
You can download this datasheet for NE564 High-Frequency Phase Locked Loop – Datasheet from the link given below:
