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NSD-1202BQFT Datasheet(PDF) 1 Page - ams AG |
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NSD-1202BQFT Datasheet(HTML) 1 Page - ams AG |
1 / 13 page NSD-1202 Dual Piezo Motor Driver IC for SQL Series SQUIGGLE Motors www.austriamicrosystems.com Revision 0.1 1 - 13 Data Sheet 1 General Description The NSD-1202 is a dedicated piezo motor driver ASIC capable of driving two SQL Series SQUIGGLE motors from a single 2.8 to 5.5 VDC supply. The two motors can be controlled independently using a standard I²C interface. An on-chip DC-DC step-up converter generates the high supply voltage (24 to 40 VDC) required by the piezoelectric elements of the SQUIGGLE motor. Four half bridge drivers create pairs of phase-shifted square waves with ultrasonic frequency as required to drive SQL Series SQUIGGLE motors. Figure 1. NSD-1202 Functional Block Diagram 2 Key Features Wide Input Supply Voltage Range: 2.8 to 5.5VDC Step-up converter to generate programmable high-voltage power supply (24 to 40V) Minimum 65% efficiency (at VDD=2.8V, IOUT=25mA, freq=2MHz) 4x output driver with defined rise/fall time I²C interface On chip registers store driver instructions Power-down mode for minimal power consumption in stand-by Small 4x4mm 16-Pin QFN Package This part supersedes and is backward-compatible with the NSD- 1102. 3 Applications The NSD-1202 is ideal for SQUIGGLE piezoelectric motor driver. VDDH LX VSSP DRV2P2 DRV1P1 DRV1P2 NSD-1202 TRIM Level- shifter Level- shifter Level- shifter Level- shifter LOGIC I²C Interface Voltage reference Registers 1 1 1 1 Step-up controller SCL ADR CLK DRV2P1 SDA VSS XPD VDD (2.8-5.5V) VIN (2.8-5.5V) C1 22µF L1 4.7µH D1 VDDH (programmable 24V...40V) C2 1µF |
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