参数资料
| 型号： | AD5381BSTZ-5 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 19/40页 |
| 文件大小： | 0K |
| 描述： | IC DAC 12BIT 40CH 5V 100-LQFP |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 产品变化通告： | AD5381,3 Redesign Change 24/Oct/2011 |
| 设计资源： | 40 Channels of Programmable Voltage with Excellent Temperature Drift Performance Using AD5381 (CN0010) AD5381 Channel Monitor Function (CN0013) |
| 标准包装： | 1 |
| 设置时间： | 6µs |
| 位数： | 12 |
| 数据接口： | 串行，并联 |
| 转换器数目： | 40 |
| 电压电源： | 单电源 |
| 功率耗散（最大）： | 80mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 100-LQFP |
| 供应商设备封装： | 100-LQFP（14x14） |
| 包装： | 托盘 |
| 输出数目和类型： | 40 电压，单极 |
| 采样率（每秒）： | 167k |
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AD5381
Data Sheet
Rev. D | Page 26 of 40
INTERFACES
The AD5381 contains both parallel and serial interfaces.
Furthermore, the serial interface can be programmed to be
either SPI-, DSP-, MICROWIRE-, or I2C-compatible. The
SER/PAR pin selects paralleland serialinterface modes. In
serial mode, the SPI/I2C pin is used to select DSP-, SPI-,
MICROWIRE-, or I2C-interface mode.
The devices use an internal FIFO memoryto allow high speed
successive writes in parallel interface mode. Theuser can con-
tinue writing new data to the device while write instructions are
being executed. The BUSYsignalindicates the current statusof
the device, going low while instructions in the FIFO are being
executed. In parallel mode,up to 128 successive instructions
can be written to the FIFO at maximum speed. When the FIFO
is full, any further writes to the device areignored.
To minimize both the power consumption of the device and the
on-chip digital noise, the active interface only powersup fully
when the device is being written to, that is, on the falling edge
of WR or the falling edge of SYNC.
DSP-, SPI-, MICROWIRE-COMPATIBLE SERIAL
INTERFACES
The serial interface can be operated with a minimum of three
wires in standalone mode orfour wiresin daisy-chain mode.
Daisy chaining allows many devices to be cascaded together to
increase system channel count. The SER/PAR pin must be tied
high and the SPI/I2C pin (Pin 97) should be tied low to enable
the DSP-/SPI-/MICROWIRE-compatibleserial interface. In
serial interface mode, the user doesnot need to drivethe paral-
lel input data pins. The serial interface’s control pins are
SYNC, DIN, SCLK—Standard 3-wireinterface pins.
DCEN—Selects standalone mode or daisy-chain mode.
SDO—Data out pin for Daisy-chain mode.
Figure 3 and Figure 5 show timing diagrams for a serial write
to the AD5381 in standalone anddaisy-chain modes. The 24-bit
data-word format for the serial interface is shown in Table 18.
A/B This pin selects whether the data write is to the A or B
register when toggle modeis enabled. With toggledisabled, this
bit should be set to 0 to select the A data register.
R/W is the read or write controlbit.
A5 to A0 are used to address the inputchannels.
REG1 and REG0 select the registerto which data is written,
as shown in Table 10.
DB11 to .DB0 contain the input data-word.
X is a don’t care condition.
Standalone Mode
By connecting the DCEN (daisy-chain enable)pin low, stand-
alone mode is enabled. The serial interface works with both a
continuous and a noncontinuous serial clock. The first falling
edge of SYNC starts the write cycle and resetsa counter that
counts the number of serial clocks to ensure the correct number
of bits are shifted into the serial shift register. Any further edges
on SYNC, except for a falling edge, are ignored until24bits are
clocked in. Once 24 bits are shifted in, the SCLK is ignored. In
order for anotherserial transfer to take place,the countermust
be reset by the falling edge of SYNC.
Table 18. 40-Channel, 12-bitDAC Serial InputRegister Configuration
MSB
LSB
A/B
R/W
A5
A4
A3
A2
A1
A0
REG1
REG0
DB11
DB10
DB9
DB8
DB7
DB6
DB5
DB4
DB3
DB2
DB1
DB0
X
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5381BSTZ-5-REEL | 功能描述:IC DAC 12BIT 40CH 5V 100-LQFP 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:1,000 系列:- 设置时间:1µs 位数:8 数据接口:串行 转换器数目:8 电压电源:双 ± 功率耗散（最大）:941mW 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:24-SOIC（0.295"，7.50mm 宽） 供应商设备封装:24-SOIC W 包装:带卷 (TR) 输出数目和类型:8 电压，单极 采样率（每秒）:* |
| AD5382BST-3 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32/40-CHANNEL 3V/5V SINGLE SUPPLY 12/14-BIT VOUT DAC - Bulk |
| AD5382BST-3-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
| AD5382BST-5 | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP 制造商:Rochester Electronics LLC 功能描述:32-CHN 5V SINGLE SUPPLY 14-BIT VOUT I.C. - Bulk |
| AD5382BST-5-REEL | 制造商:Analog Devices 功能描述:DAC 32-CH Resistor-String 14-bit 100-Pin LQFP T/R |
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