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参数资料
| 型号： | AD5398BCPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 5/17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： | 5,000 |
| 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： | 带卷 (TR) |
| 输出数目和类型： | 1 电流，单极 |
| 采样率（每秒）： | 31k |
AD5398
Rev. B | Page 12 of 16
05034-017
PD
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
00
SCL
SDA
START BY
MASTER
ACK BY
AD5398
11
91
ACK BY
AD5398
ACK BY
AD5398
STOP BY
MASTER
FRAME 3
LEAST SIGNIFICANT
DATA BYTE
FRAME 2
MOST SIGNIFICANT
DATA BYTE
FRAME 1
SERIAL BUS
ADDRESS BYTE
0
1
X
R/W
9
Figure 19. Write Operation
05034-018
PD
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
00
SCL
SDA
START BY
MASTER
ACK BY
AD5398
11
91
ACK BY
AD5398
ACK BY
AD5398
STOP BY
MASTER
FRAME 3
LEAST SIGNIFICANT
DATA BYTE
FRAME 2
MOST SIGNIFICANT
DATA BYTE
FRAME 1
SERIAL BUS
ADDRESS BYTE
0
1
X
R/W
9
Figure 20. Read Operation
Table 7. Data Format
1
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
PD
X
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
X
1 PD = soft power-down; X = unused/don’t care; 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 AD5398 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 AD5398.
Special attention should be paid to the layout of the AGND
return path and track between the voice coil motor and ISINK to
minimize any series resistance. Figure 21 shows the output
current sink of the AD5398 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
modelled 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 AD5398 is sinking current; the effect of any
series inductance is minimal. The maximum voltage drop
allowed across RSENSE is 400 mV, and the minimum drain to
source voltage of Q1 is 200 mV. This means that the AD5398
output has a compliance voltage of 600 mV. If VDROP falls below
600 mV, the output transistor, Q1, can no longer operate
properly and ISINK might not be maintained as a constant.
05034-019
7
AGND
VG
Q1
GROUND
RESISTANCE
GROUND
INDUCTANCE
8
ISINK
RSENSE
3.3
Ω
RG
LG
VDROP
VT
VC
VBAT
RT
RC
LC
TRACE
RESISTANCE
VOICE
COIL
ACTUATOR
Figure 21. Effect of PCB Trace Resistance and Inductance
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相关代理商/技术参数 |
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|---|---|
| AD5398BCPZ-REEL7 | 功能描述:IC DAC 10BIT CURRENT-SINK 8LFCSP 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) |
| 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 |
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