NXP Semiconductors OQ8844
The OQ8844 or Digital Servo Driver 2 (DSD2) consists of 1-bit class-D power drivers, which are specially designed for digital servo applications. The main benefits of using this principle are its higher efficiency grade compared to conventional analog power amplifiers, its higher integration level, its differential output and the fact that only a few external components are needed. When using these digital power drivers in a digital servo application, the statement ‘complete digital servo loop’ becomes more realistic.| Part No. | OQ8844 |
|---|---|
| Datasheet | OQ8844 Download |
| Manufacturer |  NXP Semiconductors |
| Description | Digital Servo Driver DSD-2 |
| Buy | Stock & Price |
FEATURES
Servo functions● 1-bit class-D focus actuator driver (3.3 Ω)
● 1-bit class-D radial actuator driver (3.7 Ω)
● 1-bit class-D sledge motor driver (2.5 Ω). Other features
● Supply voltage 5 V only
● Small package (SOT163-1)
● Higher efficiency, compared with conventional drivers, due to the class-D principle
● Built-in digital notch filters for higher efficiency
● Enable input for focus and radial driver
● Enable input for sledge driver
● Differential outputs for all drivers
● Separate power supply pins for all drivers. QUICK REFERENCE DATA SYMBOL VDDD VDD(F) VDD(R) VDD(S) IDDDq IDD(F) IDD(R) IDD(S) fi(clk) Ptot Tamb digital supply voltage supply voltage focus actuator supply voltage radial actuator supply voltage sledge actuator quiescent supply current digital part supply current focus supply current radial supply current sledge input clock frequency total power dissipation operating ambient temperature PARAMETER MIN. 4.5 4.5 4.5 4.5 − − − − − − −40 − − − − − 126 20 150 4.2336 110 − TYP.
