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参数资料
| 型号： | AD5821ABCBZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/17页 |
| 文件大小： | 0K |
| 描述： | IC DAC 10BIT CURRENTSINK 9WLCSP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | 8mm Carrier Tape Changes 28/Feb/2012 |
| 标准包装： | 10,000 |
| 设置时间： | 250µs |
| 位数： | 10 |
| 数据接口： | 串行 |
| 转换器数目： | 1 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 5mW |
| 工作温度： | -30°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 9-UFBGA，WLCSP |
| 供应商设备封装： | 9-WLCSP（1.52 x 1.69） |
| 包装： | 带卷 (TR) |
| 输出数目和类型： | 1 电流，单极 |
| 采样率（每秒）： | * |
AD5821
Rev. 0 | Page 12 of 16
05
95
0-
0
17
PD
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
00
SCL
SDA
START BY
MASTER
ACK BY
AD5821
11
91
ACK BY
AD5821
ACK BY
AD5821
STOP BY
MASTER
FRAME 3
LEAST SIGNIFICANT
DATA BYTE
FRAME 2
MOST SIGNIFICANT
DATA BYTE
FRAME 1
SERIAL BUS
ADDRESS BYTE
01
1
R/W
9
Figure 22. Write Operation
05
95
0-
01
8
PD
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
00
SCL
SDA
START BY
MASTER
ACK BY
AD5821
11
91
ACK BY
AD5821
ACK BY
AD5821
STOP BY
MASTER
FRAME 3
LEAST SIGNIFICANT
DATA BYTE
FRAME 2
MOST SIGNIFICANT
DATA BYTE
FRAME 1
SERIAL BUS
ADDRESS BYTE
01
1
R/W
9
Figure 23. Read Operation
Serial Data-Words
High Byte
Low Byte
Serial Data Bits
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
SD7
SD6
SD5
SD4
SD3
SD2
SD1
SD0
Input Register
R15
R14
R13
R12
R11
R10
R9
R8
R7
R6
R5
R4
R3
R2
R1
R0
Function
XSHUTDOWN
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
1 XSHUTDOWN = soft power-down; X = unused/don’t care; and D9 to D0 = DAC data.
POWER SUPPLY BYPASSING AND GROUNDING
When accuracy is important in an application, it is beneficial to
consider power supply and ground return layout on the PCB.
The PCB for the AD5821 should have separate analog and digital
power supply sections. Where shared AGND and DGND is
necessary, the connection of grounds should be made at only
one point, as close as possible to the AD5821.
Special attention should be paid to the layout of the AGND return
path and, and it should be tracked between the voice coil motor
output current sink of the AD5821 and illustrates the importance
of reducing the effective series impedance of AGND and the track
resistance between the motor and ISINK. The voice coil is modeled
as Inductor LC and Resistor RC. The current through the voice coil
is effectively a dc current that results in a voltage drop, VC, when
the AD5821 is sinking current. The effect of any series inductance
is minimal.
05
95
0-
0
19
AGND
AD5821
Q1
GROUND
RETURN
ISINK
VDROP
RSENSE
R
RG
LG
VCOIL
VBATTERY
RT
RC
LC
TRACE
RESISTANCE
VOICE
COIL
SDA
SCL
XSHUTDOWN
DGND
VDD
Figure 24. Effect of PCB Trace Resistance and Inductance
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5821ABCBZ-REEL7 | 功能描述:IC DAC 10BIT CURRENTSINK 9-WLCSP RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:50 系列:- 设置时间:4µs 位数:12 数据接口:串行 转换器数目:2 电压电源:单电源 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:8-TSSOP，8-MSOP（0.118"，3.00mm 宽） 供应商设备封装:8-uMAX 包装:管件 输出数目和类型:2 电压，单极 采样率（每秒）:* 产品目录页面:1398 (CN2011-ZH PDF) |
| AD5821AD-WAFER | 制造商:AD 制造商全称:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821A-WAFER | 制造商:AD 制造商全称:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
| AD5821BCBZ-REEL | 功能描述:IC DAC 10BIT CURRENTSINK 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）:* |
| AD5821BCBZ-REEL1 | 制造商:AD 制造商全称:Analog Devices 功能描述:120 mA, Current Sinking, 10-Bit, I2C DAC |
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