参数资料
| 型号： | AD5750-2BCPZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 21/36页 |
| 文件大小： | 0K |
| 描述： | IC CURR/VOLT OUT DRIVER 32LFCSP |
| 标准包装： | 1 |
| 放大器类型： | 仪表 |
| 电路数： | 1 |
| 转换速率： | 2 V/µs |
| 电流 - 电源： | 5.2mA |
| 电流 - 输出 / 通道： | 24mA |
| 电压 - 电源，单路/双路(±)： | ±12 V ~ 24 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-VFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 32-LFCSP（5x5） |
| 包装： | 托盘 |
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AD5750/AD5750-1/AD5750-2
Data Sheet
Rev. E | Page 28 of 36
Status Bit Read Operation
A read of the status bits can be initiated as part of a normal write
operation. The read is activated by selecting the correct device
address (A2, A1, A0) and then setting the R/W bit to 1. By
default, the SDO pin is disabled. After having addressed the
pin is enabled and data is clocked out on the 5th rising edge of
SCLK. After all the data has been clocked out on SDO, a rising
edge on SYNC disables (tristates) the SDO pin again. Status
register data (see Table 9) and control register data are both
available during the same read cycle. Data contained in Bit D10
to Bit D0 of the write operation are still valid and can be used to
if required.
The status bits comprise three read-only bits. They are used to
notify the user of specific fault conditions that occur, such as an
open circuit or short circuit on the output, an overtemperature
error, or an interface error. If any of these fault conditions occur,
a hardware FAULT is also asserted low, which can be used as a
hardware interrupt to the controller.
See the Detailed Description of Features section for a full
explanation of fault conditions.
HARDWARE CONTROL
Hardware control is enabled by connecting the HW SELECT
pin to DVCC. In this mode, the R3, R2, R1, and R0 pins, in
conjunction with the RSET pin, are used to configure the
output range per Table 8.
In hardware mode, there is no status register. The fault conditions
(open circuit, short circuit, and overtemperature) are available
on the IFAULT, VFAULT, and TEMP pins. If any one of these
fault conditions are set, a low is asserted on the specific fault pin.
IFAULT, VFAULT, and TEMP are open-drain outputs and,
therefore, can be connected together to allow the user to generate
one interrupt to the system controller to communicate a fault.
If hardwired in this way, it is not possible to isolate which fault
occurred in the system.
TRANSFER FUNCTION
conditioning block that maps the analog input voltage to a
programmed output range. The available analog input ranges are
and AD5750-2 implement a straight linear mapping function,
where 0 V maps to the lower end of the selected range and 4.096 V
(or 2.5 V for AD5750-1/AD5750-2) maps to the upper end of the
selected range.
Table 9. Input Shift Register Contents for a Read Operation—Status Register
MSB
LSB
D15
D14
D13
D12
D11
D10
D9
D8
D7
D6
D5
D4
D3
D2
D1
D0
A2
A1
A0
1
0
R3
R2
R1
R0
CLRSEL
OUTEN
RSET
PEC
Error
OVER
TEMP
IOUT
Fault
VOUT
Fault
Table 10. Status Bit Options
Bit
Description
PEC Error
This bit is set if there is an interface error detected by CRC-8 error checking. See the Detailed Description of Features section.
OVER TEMP
IOUT Fault
This bit is set if there is an open circuit on the IOUT pin.
VOUT Fault
This bit is set if there is a short circuit on the VOUT pin.
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