- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄375233 > AD5821 (Analog Devices, Inc.) 120 mA, Current Sinking, 10-Bit, I2C DAC PDF資料下載
參數(shù)資料
| 型號： | AD5821 |
| 廠商： | Analog Devices, Inc. |
| 英文描述： | 120 mA, Current Sinking, 10-Bit, I2C DAC |
| 中文描述： | 120毫安，灌電流，10位和I2C數(shù)模轉(zhuǎn)換器 |
| 文件頁數(shù)： | 14/16頁 |
| 文件大?。?/td> | 386K |
| 代理商： | AD5821 |
AD5821
APPLICATIONS INFORMATION
The AD5821 is designed to drive both spring-preloaded and
nonspring linear motors used in applications such as lens auto-
focus, image stabilization, or optical zoom. The operation principle
of the spring-preloaded motor is that the lens position is controlled
by the balancing of a voice coil and spring. Figure 25 shows the
transfer curve of a typical spring-preloaded linear motor for
autofocus. The key points of this transfer function are displace-
ment or stroke, which is the actual distance the lens moves in
millimeters (mm) and the current through the motor, measured
in milliamps (mA).
A start current is associated with spring-preloaded linear
motors, which is a threshold current that must be exceeded for
any displacement in the lens to occur. The start current is usually
20 mA or greater; the rated stroke or displacement is usually
0.25 mm to 0.4 mm; and the slope of the transfer curve is
approximately 10 μm/mA or less.
The AD5821 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 AD5821 the ideal solution
for these applications is the monotonicity of the device, ensuring
that lens positioning is repeatable for the application of a given
digital word.
Figure 26 shows a typical application circuit for the AD5821.
Rev. 0 | Page 14 of 16
10
50
60
80
70
90
100
40
30
20
110 120
0.1
0.5
0.4
0.3
0.2
START
CURRENT
SINK CURRENT (mA)
S
0
Figure 25. Spring-Preloaded Voice Coil Stroke vs. Sink Current
0
7
2
1
XSHUTDOWN
8
VOICE
COIL
I
SINK
R
SENSE
REFERENCE
R
AD5821
5
SCL
SDA
I
2
C MASTER
DEVICE
I
2
C SLAVE
DEVICE
R
P
R
P
V
DD
V
CC
V
DD
D1
0.1μF
I
2
C SERIAL
INTERFACE
3
4
6
POWER-ON
RESET
0.1μF
10μF
10μF
+
+
V
CC
V
DD
10-BIT
CURRENT
OUTPUT DAC
Figure 26. Typical Application Circuit
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD5821BCBZ-REEL1 | 120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821BCBZ-REEL71 | 120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821D-WAFER | 120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821-WAFER | 120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD584L | Pin Programmable Precision Voltage Reference |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD5821A | 制造商:AD 制造商全稱:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821ABCBZ-REEL | 功能描述:IC DAC 10BIT CURRENTSINK 9WLCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Data Converter Fundamentals DAC Architectures 設(shè)計資源:Unipolar, Precision DC Digital-to-Analog Conversion using AD5450/1/2/3 8-14-Bit DACs (CN0052) Precision, Bipolar, Configuration for AD5450/1/2/3 8-14bit Multiplying DACs (CN0053) AC Signal Processing Using AD5450/1/2/3 Current Output DACs (CN0054) Programmable Gain Element Using AD5450/1/2/3 Current Output DAC Family (CN0055) Single Supply Low Noise LED Current Source Driver Using a Current Output DAC in the Reverse Mode (CN0139) 標(biāo)準(zhǔn)包裝:10,000 系列:- 設(shè)置時間:- 位數(shù):12 數(shù)據(jù)接口:DSP，MICROWIRE?，QSPI?，串行，SPI? 轉(zhuǎn)換器數(shù)目:1 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 125°C 安裝類型:表面貼裝 封裝/外殼:SOT-23-8 薄型，TSOT-23-8 供應(yīng)商設(shè)備封裝:TSOT-23-8 包裝:帶卷 (TR) 輸出數(shù)目和類型:1 電流，單極；1 電流，雙極 采樣率（每秒）:2.7M |
| AD5821ABCBZ-REEL7 | 功能描述:IC DAC 10BIT CURRENTSINK 9-WLCSP RoHS:是 類別:集成電路 (IC) >> 數(shù)據(jù)采集 - 數(shù)模轉(zhuǎn)換器 系列:- 產(chǎn)品培訓(xùn)模塊:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 標(biāo)準(zhǔn)包裝:50 系列:- 設(shè)置時間:4µs 位數(shù):12 數(shù)據(jù)接口:串行 轉(zhuǎn)換器數(shù)目:2 電壓電源:單電源 功率耗散（最大）:- 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:8-uMAX 包裝:管件 輸出數(shù)目和類型:2 電壓，單極 采樣率（每秒）:* 產(chǎn)品目錄頁面:1398 (CN2011-ZH PDF) |
| AD5821AD-WAFER | 制造商:AD 制造商全稱:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821A-WAFER | 制造商:AD 制造商全稱:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。