Analog vs Digital Servos

For existing and new radio control enthusiasts, one debate and

conversation has been what is the difference between analog and

digital servos. And which type is best for your particular application?

ANALOG SERVOS (+ & -)

Analog Stat Advantages Analog Stat Disadvantages

1. Less Expensive

2. Lower Power Consumption

3. Low Frequency Audible Noise

1. Slow Response

2. Large 8us Deadband Zone

3. Weak Holding Torque

4. Low Resolution - 256-512 steps

Typical Applications:

• Air > Sport & Scale Aircraft

• Surface > Sport Level 1/10 Cars & Trucks

DIGITAL SERVOS (+ & -)

Digital Stat Advantages Digital Stat Disadvantages

1. Fast, Precise Response

2. Excellent Holding Power - 3-5 times the stall torque

3. 1us Deadband Zone - 8 times Better Centering

4. Excellent Resolution for Smooth Controls - 2048-4096

steps

1. More Expensive

2. Higher Power Consumption

3. High Frequency Audible Noise

Typical Applications:

• Air > 3D & Pattern Aircraft of all Sizes, Jets and Larger Scale Models

• Surface > High Performance Cars & Trucks of all Sizes

MATCHUP CONSIDERATIONS:

Before placing your bets on either servo type, bear in mind, you should always match the level of the servo with the level of your

model. Depending upon the speed and power that you need, an analog servo may be sufficient in producing the result you want,

at a more affordable price. On the other hand, high performance models should always use high performance, digital servos.

Another important factor is TORQUE. There is no such thing as too much torque! The higher the torque, the easier it is on the

servo which keeps the heat down and improves reliability.