Datasheet.kr   

AD5821A 데이터시트 PDF




Analog Devices에서 제조한 전자 부품 AD5821A은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.


 

PDF 형식의 AD5821A 자료 제공

부품번호 AD5821A 기능
기능 I2C DAC
제조업체 Analog Devices
로고 Analog Devices 로고


AD5821A 데이터시트 를 다운로드하여 반도체의 전기적 특성과 매개변수에 대해 알아보세요.




전체 16 페이지수

미리보기를 사용할 수 없습니다

AD5821A 데이터시트, 핀배열, 회로
FEATURES
Current sink: 120 mA
Available in 3 × 3 array WLCSP package
2-wire, (I2C-compatible) 1.8 V serial interface
10-bit resolution
Integrated current sense resistor
Power supply range: 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
APPLICATIONS
Consumer
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
120 mA, Current Sinking,
10-Bit, I2C DAC
AD5821A
Industrial
Heater controls
Fan controls
Cooler (Peltier) controls
Solenoid controls
Valve controls
Linear actuator controls
Light controls
Current loop controls
GENERAL DESCRIPTION
The AD5821A is a single, 10-bit digital-to-analog converter
(DAC) with output current sinking capability of 120 mA. It
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, I2C®-
compatible serial interface that operates at clock rates up to
400 kHz.
The AD5821A incorporates a power-on reset circuit that
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 1 μA maximum.
The AD5821A is designed for autofocus, image stabilization,
and optical zoom applications in camera phones, digital still
cameras, and camcorders.
The AD5821A 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 I2C 7-bit address for the AD5821A is 0xC.
FUNCTIONAL BLOCK DIAGRAM
XSHUTDOWN
VDD
DGND
SDA
SCL
REFERENCE
POWER-ON
RESET
I2C SERIAL
INTERFACE
10-BIT
CURRENT
OUTPUT DAC
VDD
D1
ISINK
AD5821A
R
DGND
Figure 1.
RSENSE
3.3
AGND
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
©2008 Analog Devices, Inc. All rights reserved.




AD5821A pdf, 반도체, 판매, 대치품
AD5821A
AC SPECIFICATIONS
VDD = 2.7 V to 5.5 V, AGND = DGND = 0 V, RL = 25 Ω connected to VDD, unless otherwise noted.
Table 2.
Parameter
Output Current Settling Time
Slew Rate
Major Code Change Glitch
Impulse
Digital Feedthrough3
B Version1, 2
Min Typ Max
250
0.3
0.15
0.06
Unit
μs
mA/μs
nA-sec
nA-sec
1 Temperature range for the B version is −40°C to +85°C.
2 Guaranteed by design and characterization; not production tested.
3 See the Terminology section.
Test Conditions/Comments
VDD = 3.6 V, RL = 25 Ω, LL = 680 μH, ¼ scale to ¾ scale change (0x100 to 0x300)
1 LSB change around major carry
TIMING SPECIFICATIONS
VDD = 2.7 V to 3.6 V. All specifications TMIN to TMAX, unless otherwise noted.
Table 3.
Parameter1
fSCL
t1
t2
t3
t4
t5
t6 2
t7
t8
t9
t10
t11
CB
B Version
Limit at TMIN, TMAX
400
2.5
0.6
1.3
0.6
100
0.9
0
0.6
0.6
1.3
300
0
250
300
20 + 0.1 CB3
400
Unit
kHz max
μs min
μs min
μs min
μs min
ns min
μs max
μs min
μs min
μs min
μs min
ns max
ns min
ns max
ns max
ns min
pF max
Description
SCL clock frequency
SCL cycle time
tHIGH, SCL high time
tLOW, SCL low time
tHD, STA, start/repeated start condition hold time
tSU, DAT, data setup time
tHD, DAT, data hold time
tSU, STA, setup time for repeated start
tSU, STO, stop condition setup time
tBUF, bus free time between a stop condition and a start condition
tR, rise time of both SCL and SDA when receiving
Can be CMOS driven
tF, fall time of SDA when receiving
tF, fall time of both SCL and SDA when transmitting
Capacitive load for each bus line
1 Guaranteed by design and characterization; not production tested.
2 A master device must provide a hold time of at least 300 ns for the SDA signal (referred to the VINHMINof the SCL signal) to bridge the undefined region of the SCL falling edge.
3 CB is the total capacitance of one bus line in pF. tR and tF are measured between 0.3 VDD and 0.7 VDD.
Timing Diagram
SDA
t9 t3 t10
t11
t4
SCL
t4
START
CONDITION
t6 t2 t5
t7
REPEATED
START
CONDITION
Figure 2. 2-Wire Serial Interface Timing Diagram
t1
t8
STOP
CONDITION
Rev. 0 | Page 4 of 16

4페이지










AD5821A 전자부품, 판매, 대치품
TYPICAL PERFORMANCE CHARACTERISTICS
2.0
INL VDD = 3.8V
TEMP = 25°C
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
DNL VDD = 3.8V
TEMP = 25°C
CODE
Figure 6. Typical DNL vs. Code Plot
92.0
91.5
91.0
90.5
90.0
89.5
89.0
88.5
88.0
53.5–6
100.0–6
150.0–6
200.0–6
TIME
250.0–6
300.0–6 333.1–6
Figure 7. ¼ to ¾ Scale Settling Time (VDD = 3.6 V)
VERT = 50µs/DIV
AD5821A
3
CH3
HORIZ = 468µA/DIV
M50.0µs
Figure 8. Settling Time for a 4-LSB Step (VDD = 3.6 V)
VERT = 2µA/DIV
4.8µA p-p
1
CH1
M2.0s
HORIZ = 2s/DIV
Figure 9. 0.1 Hz to 10 Hz Noise Plot (VDD = 3.6 V)
0.14
0.12
0.10
0.08
IOUT @ +25°C
IOUT @ –40°C
IOUT @ +85°C
0.06
0.04
0.02
0
CODE
Figure 10. Sink Current vs. Code vs. Temperature (VDD = 3.6 V)
Rev. 0 | Page 7 of 16

7페이지


구       성 총 16 페이지수
다운로드[ AD5821A.PDF 데이터시트 ]

당사 플랫폼은 키워드, 제품 이름 또는 부품 번호를 사용하여 검색할 수 있는

포괄적인 데이터시트를 제공합니다.


구매 문의
일반 IC 문의 : 샘플 및 소량 구매
-----------------------------------------------------------------------

IGBT, TR 모듈, SCR 및 다이오드 모듈을 포함한
광범위한 전력 반도체를 판매합니다.

전력 반도체 전문업체

상호 : 아이지 인터내셔날

사이트 방문 :     [ 홈페이지 ]     [ 블로그 1 ]     [ 블로그 2 ]



관련 데이터시트

부품번호상세설명 및 기능제조사
AD5821

single 10-bit digital-to-analog converter

Analog Devices
Analog Devices
AD5821A

I2C DAC

Analog Devices
Analog Devices

DataSheet.kr       |      2020   |     연락처      |     링크모음      |      검색     |      사이트맵