AD5398A Analog Devices, AD5398A Datasheet

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AD5398A

Manufacturer Part Number
AD5398A
Description
120 mA, Current Sinking, 10-Bit, I2C DAC
Manufacturer
Analog Devices
Datasheet

Specifications of AD5398A

Resolution (bits)
10bit
Dac Settling Time
250µs
Max Pos Supply (v)
+5.5V
Single-supply
Yes
Dac Type
Current Out
Dac Input Format
I2C/Ser 2-wire,Ser

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD5398ABCBZ-REEL7
Manufacturer:
ADI/亚德诺
Quantity:
20 000
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

Related parts for AD5398A

AD5398A Summary of contents

Page 1

... 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 ...

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 Maximum Ratings ............................................................ 5 ESD Caution .................................................................................. 5 REVISION HISTORY 10/08—Revision 0: Initial Version Pin Configuration and Function Descriptions ..............................6 Typical Performance Characteristics ..............................................7 Terminology .......................................................................................9 Theory of Operation ...................................................................... 10 Serial Interface ...

Page 3

... Pulse width of spike suppressed I specification is valid for all DAC codes GND 5 GND AD5398A = ...

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 B version is –30°C to +85°C. 2 Guaranteed by design and characterization; not production tested. 3 See the Terminology section. ...

Page 5

... Maximum Peak Reflow Temperature 1 Transient currents 100 mA do not cause SCR latch-up achieve the optimum θ recommended that the AD5398A be JA soldered onto a 4-layer board per Jedec J-STD-020C. Stresses above those listed under Absolute Maximum Ratings may cause permanent damage to the device. This is a stress rating only ...

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 VIEW FROM BALL SIDE Figure 3. 9-Ball WLCSP Pin Configuration Description Output Current Sink ...

Page 7

... HORIZ = 468µA/DIV CH3 M50.0ms Figure 8. Settling Time for a 4-LSB Step (V DD VERT = 2µA/DIV 1 HORIZ = 2s/DIV CH1 M2.0s Figure 9. 0 Noise Plot (V DD 0.14 0. –40°C OUT 0.10 0.08 0.06 0.04 0.02 0 CODE Figure 10. Sink Current vs. Code vs. Temperature (V AD5398A = 3.6 V) 4.8µA p +25°C OUT I @ +85°C OUT = 3 ...

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 INL (V 1.0 0.5 NEGATIVE INL (V = 3.6V) DD NEGATIVE INL (V = 3.8V –0.5 NEGATIVE INL (V DD –1.0 –40 –30 –20 –10 ...

Page 9

... DAC register. Ideally, the output is 0 mA. The zero-code error is always positive in the AD5398A because the output of the DAC cannot go below 0 mA. This is due to a combination of the offset errors in the DAC and output amplifier. Zero-code error is expressed in mA. ...

Page 10

... Upon receiving an ACK, the master device can clock data into the AD5398A in a write operation can clock it out in a read operation. Data must change either during the low period of the clock, because SDA transitions during the high period define a ...

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 DAC requires only 10 bits of data, not all bits of the input register data are used ...

Page 12

... The maximum voltage drop allowed across R is 400 mV, and the minimum drain to source SENSE voltage 200 mV. This means that the AD5398A output has a compliance voltage of 600 mV 600 mV, the output transistor, Q1, can no longer operate properly and I might not be maintained as a constant. ...

Page 13

... The AD5398A is designed to sink up to 120 mA, which is more than adequate for available commercial linear motors or voice coils. Another factor that makes the AD5398A the ideal ...

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, provided that the system conforms to the I ©2008 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners ...

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