PRL-220A/240A TTL Frequency Divider 

Basic Lab Tools > Frequency Dividers > PRL-220A/240A

PRL-220 Frequency Divider

PRL-240 Frequency Divider

Features (both models):

• 100 MHz Toggle Frequency
• 50 Ω Outputs deliver > 2.2 V into 50 Ω loads
• TTL/CMOS Compatible Input Levels
• 50  Ω or 500 Ω Input Resistance
• BNC I/O Connectors
• Ready-to-Use 1.3 x 2.9 x 2.9-in. Module includes AC/DC Adapter

Applications (both models):

• Count down signal for 'scope trigger
• Control Signal for split cycle timing
• Counter Output simulation
  Square Wave Generator
• An Essential Lab Tool for Working with TTL/CMOS Circuits
• Download Datasheet

Description

The PRL-220A and PRL-240A are self-contained high-speed TTL frequency dividers capable of operating at clock frequencies in excess of 100 MHz. The PRL-220A has ÷2, ÷4, ÷8 and ÷16 outputs. The PRL-240A has ÷2 and ÷10 outputs. The input resistance of each unit can be selected to be 500 Ω or 50 Ω by a toggle switch. Functional block diagrams of the PRL-220A and PRL-240A are shown in Fig.1 and Fig.2, respectively.

The back-matched 50 Ω outputs of these frequency dividers can drive long lines and deliver greater than 2.2 V into 50 Ω loads. Except for the division ratios, the performance characteristics of both units are identical. 

The outputs of these frequency dividers are square waves, except for the ÷10 output in the PRL-240A, and they are useful for testing High and Low pass filters. The divider outputs are useful as 'scope triggers for viewing multi-frequency signals. The ÷2 signal is often needed as a control signal for split-cycle timing applications.

Each unit is housed in an attractive 1.3 x 2.9 x 2.9-in. extruded aluminum enclosure and has BNC I/O connectors. A ±8.5 V AC/DC Adapter is supplied with each unit.

Detail |  Specifications | Diagram | Datasheet