参数资料
| 型号： | AD5378ABC |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/29页 |
| 文件大小： | 0K |
| 描述： | IC DAC 14BIT 32CHAN 108CSPBGA |
| 产品培训模块： | Data Converter Fundamentals DAC Architectures |
| 标准包装： | 1 |
| 设置时间： | 20µs |
| 位数： | 14 |
| 数据接口： | 串行，并联 |
| 转换器数目： | 32 |
| 电压电源： | 模拟和数字，双 ± |
| 功率耗散（最大）： | 850mW |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 108-BGA，CSPBGA |
| 供应商设备封装： | 108-CSPBGA（13x13） |
| 包装： | 托盘 |
| 输出数目和类型： | 32 电压，双极 |
| 采样率（每秒）： | 50k |
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AD5378
Rev. A | Page 22 of 28
INTERFACES
The AD5378 contains parallel and serial interfaces. The active
interface is selected via the SER/PAR pin.
The AD5378 uses an internal FIFO memory to allow high
speed successive writes in both serial and parallel modes. The
user can continue writing new data to the AD5378 while write
instructions are being executed. The BUSY signal goes low
while instructions in the FIFO are being executed. Up to
120 successive instructions can be written to the FIFO at
maximum speed. When the FIFO is full, additional writes to the
AD5378 are ignored.
To minimize both the power consumption of the device and
on-chip digital noise, the active interface powers up fully only
when the device is being written to, that is, on the falling edge
of WR or on the falling edge of SYNC.
All digital interfaces are 2.5 V LVTTL-compatible when
operating from a 2.7 V to 3.6 V VCC supply.
PARALLEL INTERFACE
A pull-down on the SER/PAR pin makes the parallel interface
the default. If using the parallel interface, the SER/PAR pin can
be left unconnected. Figure 6 shows the timing diagram for a
parallel write to the AD5378. The parallel interface is controlled
by the following pins.
CS Pin
Active low device select pin.
WR Pin
On the rising edge of WR, with CS low, the address values at
Pins A7 to A0 are latched and data values at Pins DB13 to DB0
are loaded into the selected AD5378 input registers.
REG1, REG0 Pins
The REG1 and REG0 pins determine the destination register of
the data being written to the AD5378. See Table 12.
Table 12. Register Selection
REG1
REG0
Register Selected
1
Input Data Register (x1)
1
0
Offset Register (c)
0
1
Gain Register (m)
0
Special Function Register
DB13 to DB0 Pins
The AD5378 accepts a straight 14-bit parallel word on DB0 to
DB13, where DB13 is the MSB and DB0 is the LSB. See Table 13
to Table 17.
A7 to A0 Pins
Each of the 32 DAC channels can be addressed individually. In
addition, several channel groupings enable the user to simulta-
neously write the same data to multiple DAC channels. Address
Bits A7 to A4 are decoded to select one group or multiple
groups of registers. Address Bits A3 to A0 select one of ten
input data registers (x1), offset registers (c), or gain registers
(m). See Table 18.
SERIAL INTERFACE
The SER/PAR pin must be tied high to enable the serial inter-
face and disable the parallel interface. The serial interface is
controlled by the following pins.
SYNC, DIN, SCLK
Standard 3-wire interface pins.
DCEN
Selects standalone mode or daisy-chain mode.
SDO
Data out pin for daisy-chain mode.
write to the AD5378 in standalone and daisy-chain modes,
respectively.
The 24-bit data-word format for the serial interface is shown in
MSB
REG0
DB13–DB0
LSB
A7–A0
REG1
REGISTER DATA BITS
GROUP/CHANNEL
SELECT BITS
REGISTER SELECT
BITS
05292-021
Figure 21. Serial Data Format
Standalone Mode
By connecting the DCEN (daisy-chain enable) pin low,
standalone mode is enabled. The serial interface works with
both a continuous and a burst serial clock. The first falling edge
of SYNC starts the write cycle and resets a counter that counts
the number of serial clocks to ensure that the correct number of
bits is shifted into the serial shift register. Additional edges on
SYNC are ignored until 24 bits are shifted in. Once 24 bits are
shifted in, the SCLK is ignored. For another serial transfer to
take place, the counter must be reset by the falling edge of SYNC.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD5378ABCZ | 功能描述:IC DAC 14BIT 32CHAN 108CSPBGA RoHS:是 类别:集成电路 (IC) >> 数据采集 - 数模转换器 系列:- 标准包装:1 系列:- 设置时间:4.5µs 位数:12 数据接口:串行，SPI? 转换器数目:1 电压电源:单电源 功率耗散（最大）:- 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:8-SOIC（0.154"，3.90mm 宽） 供应商设备封装:8-SOICN 包装:剪切带 (CT) 输出数目和类型:1 电压，单极；1 电压，双极 采样率（每秒）:* 其它名称:MCP4921T-E/SNCTMCP4921T-E/SNRCTMCP4921T-E/SNRCT-ND |
| AD5378ABCZ1 | 制造商:AD 制造商全称:Analog Devices 功能描述:32-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage Output DAC |
| AD5379 | 制造商:AD 制造商全称:Analog Devices 功能描述:40-Channel, 14-Bit, Parallel and Serial Input, Bipolar Voltage-Output DAC |
| AD5379ABC | 功能描述:IC DAC 14BIT 40CH 108-CSPBGA RoHS:否 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）:* |
| AD5379ABCZ | 功能描述:IC DAC 14BIT 40CHAN 108CSPBGA 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）:* |
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