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Datasheet
NSD-2101
P i e z o M o t o r D r i v e r A S I C f o r S QL- RV S er ie s
R e d u c e d Vol t a g e S Q U I G G L E ® RV a n d U TA F ™ M o t o r s
1 General Description
In combination with the SQUIGGLE® RV or UTAF, the NSD-2101
provides the industry’s smallest piezo motor drive solution with direct
battery drive; no boost circuit required.
The NSD-2101 is a dedicated piezo motor driver ASIC capable of
driving a SQL-RV Series Reduced Voltage SQUIGGLE® RV motor
or UTAF motor from a single 2.3 to 5.5 VDC supply. The motor can
be controlled using a standard I²C interface.
The NSD-2101 uses proprietary control technology to dynamically
adjust motor drive frequency to maintain optimal motor performance
and minimal power consumption over wide temperature ranges and
operating conditions. A built-in oscillator eliminates the need for an
external master clock.
2 Key Features
Industry’s smallest piezo motor drive solution with direct battery
Figure 1. NSD-2101 Functional Block Diagram
VCC
C1
XPD
Power Save
ch
ni
c
SDA
SCL
Te
ADR
VSS
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Built-in oscillator; no external clock or oscillator required
I²C interface for direct serial interface to microprocessor
On-chip registers for storing driver instructions
drive
- Wide input supply voltage: 2.3 to 5.5 VDC
- 1.8 x 1.8 mm 16-ball WL-CSP or 4 x 4 mm 16-pin QFN
(minimum order quantities for QFN apply)
Low power consumption:
- Proprietary design optimizes power usage
- Hard power-down mode for lowest power consumption
- Idle mode via software for reduced power while preserving
frequency calibration
Proprietary frequency tracking controls maximizes motor
performance over a range of operating and environmental
conditions
3 Applications
The NSD-2101 is ideal for SQL-RV-1.8 SQUIGGLE® RV
piezoelectric motor driver and UTAF piezoelectric motor driver.
C2
VDD
VDDP
+
-
2.3V - 5.5V
LDO
BandGap
Startup
V/I-
References
Frequency
Tracking &
Control
Connection to
SQUIGGLE® RV
Motor
Connection to
UTAF motor
VCO
P1-1
P1-2
1 x MLA
Squiggle
Motor Driver
P1-1
P1-2
P2-1
P2-2
PPTRIM
Control
P2-1
P2-2
I²C Interface &
Registers
Test
TM
VSSP
Revision 0.6
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id
1 - 22
NSD-2101
NSD-2101
Datasheet - C o n t e n t s
Contents
1 General Description ..................................................................................................................................................................
5 Absolute Maximum Ratings ......................................................................................................................................................
6.1 DC/AC Characteristics for Digital Inputs and Outputs ..........................................................................................................................
7.2 Power Dissipation Control ....................................................................................................................................................................
7.3 Frequency Tracking..............................................................................................................................................................................
7.6 Control Register..................................................................................................................................................................................
7.7 Period Counter ...................................................................................................................................................................................
7.11 Period Offset.....................................................................................................................................................................................
8 Application Information ...........................................................................................................................................................
8.1 Integration with SQL-RV-1.8 SQUIGGLE Motor.................................................................................................................................
8.2 Integration with UTAF Motors .............................................................................................................................................................
8.3 Integration with Other Motors .............................................................................................................................................................
9 Package Drawings and Markings ...........................................................................................................................................
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