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参数资料
| 型号： | AD5398BCPZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/17页 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT CURRENT-SINK 8LFCSP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1 |
| 设置时间： | 250µs |
| 位数： | 10 |
| 数据接口： | I²C，串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-VFDFN 裸露焊盘，CSP |
| 供应商设备封装： | 8-LFCSP-VD（3x3） |
| 包装： | 标准包装 |
| 输出数目和类型： | 1 电流，单极 |
| 采样率（每秒）： | 31k |
| 产品目录页面： | 782 (CN2011-ZH PDF) |
| 其它名称： | AD5398BCPZ-REEL7DKR |
AD5398
Rev. B | Page 14 of 16
APPLICATIONS
The AD5398 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 22
shows the transfer curve of a typical spring preloaded linear
motor for autofocus. The key points of this transfer function are
displacement or stroke, which is the actual distance the lens
moves in mm, and the current through the motor in mA.
A start current is associated with spring-preloaded linear
motors, which is effectively 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 AD5398 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 AD5398 the ideal solution
for these applications is the monotonicity of the device, which
ensures that lens positioning is repeatable for the application of
a given digital word.
Figure 23 shows a typical application circuit for the AD5398.
05034-020
0.5
0.4
0.3
0.2
0.1
0
10
20
30
40
START
CURRENT
50
60
70
80
90
100
110
120
0
SINK CURRENT (mA)
S
T
ROKE
(mm)
Figure 22. Spring Preloaded Voice Coil Stroke vs. Sink Current
05034-022
POWER-ON
RESET
3
7
2
6
4
1
POWER-DOWN
RESET
8
VOICE
COIL
ACTUATOR
RSENSE
3.3
Ω
I2C SERIAL
INTERFACE
10-BIT
CURRENT
OUTPUT DAC
REFERENCE
R
AD5398
5
SCL
SDA
I2C MASTER
DEVICE
I2C SLAVE
DEVICE
I2C SLAVE
DEVICE
RP
VDD
VCC
0.1
μF
10
μF
+
0.1
μF
10
μF
+
Figure 23. Typical Application Circuit
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5398BCPZ-WP | 制造商:Analog Devices 功能描述:DAC 1-CH 10-bit 8-Pin LFCSP EP 制造商:Analog Devices 功能描述:10BIT DAC SINGLE SMD 5398 LFCSP8 |
| AD5398BCSURF | 制造商:Rochester Electronics LLC 功能描述: 制造商:Analog Devices 功能描述: |
| AD5398BCSURFZ | 功能描述:IC DAC 10BIT CURR-SINK 9WLCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:2,400 系列:- 设置时间:- 位数:18 数据接口:串行 转换器数目:3 电压电源:模拟和数字 功率耗散（最大）:- 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:36-TFBGA 供应商设备封装:36-TFBGA 包装:带卷 (TR) 输出数目和类型:* 采样率（每秒）:* |
| AD5399YRM | 制造商:Analog Devices 功能描述:DAC 2-CH 12-bit 10-Pin MSOP 制造商:Analog Devices 功能描述:12BIT DAC INT REF DUAL SMD 5399 |
| AD5399YRM-REEL7 | 制造商:Analog Devices 功能描述:DAC 2-CH 12-bit 10-Pin MSOP T/R |
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