EVAL-AD5398AEBZ AD [Analog Devices], EVAL-AD5398AEBZ Datasheet

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EVAL-AD5398AEBZ

Manufacturer Part Number
EVAL-AD5398AEBZ
Description
120 mA, Current Sinking, 10-Bit, I2C DAC
Manufacturer
AD [Analog Devices]
Datasheet
FEATURES
Current sink: 120 mA
2-wire, (I
10-bit resolution
Integrated current sense resistor
Power supply: 2.7 V to 5.5 V
Guaranteed monotonic over all codes
Power down to: 0.5 μA typical
Internal reference
Ultralow noise preamplifier
Power-down function
Power-on reset
Available in 3 × 3 array WLCSP package
APPLICATIONS
Consumer
Rev. 0
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
Lens autofocus
Image stabilization
Optical zoom
Shutters
Iris/exposure
Neutral density (ND) filters
Lens covers
Camera phones
Digital still cameras
Camera modules
Digital video cameras/camcorders
Camera-enabled devices
Security cameras
Web/PC cameras
2
C-compatible) 1.8 V serial interface
SDA
SCL
PD
AD5398A
INTERFACE
I
2
C SERIAL
DGND
FUNCTIONAL BLOCK DIAGRAM
V
DD
REFERENCE
OUTPUT DAC
CURRENT
10-BIT
DGND
Figure 1.
R
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
Industrial
GENERAL DESCRIPTION
The AD5398A is a single, 10-bit digital-to-analog converter
(DAC) with a current sink output capability of 120 mA. This
device features an internal reference and operates from a
single 2.7 V to 5.5 V supply. The DAC is controlled via a
2-wire (1.8 V, I
at clock rates up to 400 kHz.
The AD5398A incorporates a power-on reset circuit, which
ensures the DAC output powers up to 0 V and remains there
until a valid write takes place. It has a power-down feature
that reduces the current consumption of the device to 0.5 μA
typically.
The AD5398A is designed for autofocus, image stabilization,
and optical zoom applications in camera phones, digital still
cameras, and camcorders. The AD5398A is also suitable for
many industrial applications, such as controlling temperature,
light, and movement without derating, over temperatures
ranging from −30°C to +85°C. The I
AD5398A is 0x18 to 0x1F inclusive.
Heater control
Fan control
Cooler (Peltier) control
Solenoid control
Valve control
Linear actuator control
Light control
Current loop control
POWER-ON
RESET
R
SENSE
3.3Ω
120 mA, Current Sinking,
AGND
D1
2
C®-compatible) serial interface that operates
V
DD
I
©2008 Analog Devices, Inc. All rights reserved.
SINK
10-Bit, I
2
C address range for the
AD5398A
www.analog.com
2
C DAC

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EVAL-AD5398AEBZ Summary of contents

Page 1

FEATURES Current sink: 120 mA 2-wire C-compatible) 1.8 V serial interface 10-bit resolution Integrated current sense resistor Power supply: 2 5.5 V Guaranteed monotonic over all codes Power down to: 0.5 μA typical Internal reference Ultralow ...

Page 2

AD5398A TABLE OF CONTENTS Features .............................................................................................. 1 Consumer Applications ................................................................... 1 Industrial Applications .................................................................... 1 General Description ......................................................................... 1 Functional Block Diagram .............................................................. 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 AC Specifications .......................................................................... 4 Timing Specifications .................................................................. 4 Absolute ...

Page 3

SPECIFICATIONS 5.5 V, AGND = DGND = 0 V, load resistance (R DD unless otherwise noted. Table 1. Parameter Min DC PERFORMANCE Resolution 2 Relative Accuracy 2, 3 Differential Nonlinearity 2, 4 Zero Code Error ...

Page 4

AD5398A AC SPECIFICATIONS 5.5 V, AGND = DGND = Table 2. Parameter Output Current Settling Time Slew Rate Major Code Change Glitch Impulse 3 Digital Feedthrough 1 Temperature range for the ...

Page 5

ABSOLUTE MAXIMUM RATINGS 25°C, unless otherwise noted. A Table 4. Parameter V to AGND DGND DD AGND to DGND SCL, SDA to DGND PD to DGND I to AGND SINK Operating Temperature Range Industrial ...

Page 6

AD5398A PIN CONFIGURATION AND FUNCTION DESCRIPTIONS Table 5. 9-Ball WLCSP Pin Function Description Pin Number Mnemonic A1 I SINK AGND B2 DGND B3 SDA C1 DGND SCL 1690µ ...

Page 7

TYPICAL PERFORMANCE CHARACTERISTICS 2.0 1.5 1.0 0.5 0 –0.5 CODE Figure 5. Typical INL vs. Code Plot 0.6 0.5 0.4 0.3 0.2 0.1 0 –0.1 –0.2 –0.3 CODE Figure 6. Typical DNL vs. Code Plot 92.0 91.5 91.0 90.5 90.0 ...

Page 8

AD5398A 2000 1800 1600 1400 1200 1000 800 600 400 200 0 10 100 1k FREQUENCY (Hz) Figure 11. AC Power Supply Rejection Ratio (V 3.5 3.0 POSITIVE INL (V = 3.8V) POSITIVE INL (V DD 2.5 2.0 1.5 POSITIVE ...

Page 9

TERMINOLOGY Relative Accuracy For the DAC, relative accuracy or integral nonlinearity is a measurement of the maximum deviation, in LSB, from a straight line passing through the endpoints of the DAC transfer function. A typical INL vs. code plot is ...

Page 10

AD5398A THEORY OF OPERATION The AD5398A is a fully integrated 10-bit DAC with 120 mA output current sink capability and is intended for driving voice coil actuators in applications such as lens autofocus, image sta- bilization, and optical zoom. The ...

Page 11

DATA FORMAT Data is written to the AD5398A high byte first, MSB first, and is shifted into the 16-bit input register. After all data is shifted in, data from the input register is transferred to the DAC register. Because the ...

Page 12

AD5398A POWER SUPPLY BYPASSING AND GROUNDING When accuracy is important in an application beneficial to consider power supply and ground return layout on the PCB. The PCB for the AD5398A should have separate analog and digital power supply ...

Page 13

APPLICATIONS INFORMATION The AD5398A is designed to drive both spring preloaded and nonspring linear motors used in applications such as lens autofocus, image stabilization, or optical zoom. The operating principle of the spring-preloaded motor is that the lens position is ...

Page 14

... AD5398A OUTLINE DIMENSIONS BALL 1 IDENTIFIER (BALL SIDE DOWN) ORDERING GUIDE Model Temperature Range 1 AD5398ABCBZ-REEL7 −30°C to +85°C 1 AD5398ABCBZ-REEL −30°C to +85°C AD5398A-WAFER −40°C to +85°C 1 EVAL-AD5398AEBZ RoHS Compliant Part. 0.65 0.59 1.575 0.53 1.515 SEATING 1.455 PLANE 0.35 0.32 1.750 0.29 1.690 1.630 ...

Page 15

NOTES Rev Page AD5398A ...

Page 16

AD5398A NOTES Purchase of licensed components of Analog Devices or one of its sublicensed Associated Companies conveys a license for the purchaser under the Philips I 2 Rights to use these components system, ...

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