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| 型号： | AD5750-1BCPZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 24/36页 |
| 文件大小： | 0K |
| 描述： | IC CURR/VOLT OUT DVR 32LFCSP |
| 标准包装： | 5,000 |
| 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(±)： | ±10.8 V ~ 26.4 V |
| 工作温度： | -40°C ~ 105°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 32-LFCSP |
| 供应商设备封装： | 32-LFCSP-VQ |
| 包装： | 带卷 (TR) |
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AD5750/AD5750-1
Rev. C | Page 30 of 36
EXTERNAL CURRENT SETTING RESISTOR
part of the voltage-to-current conversion circuitry. The nominal
value of the internal current sense resistor is 15 kΩ. To allow for
overrange capability in current mode, the user can also select
the internal current sense resistor to be 14.7 kΩ, giving a
nominal 2% overrange capability. This feature is available in the
0 mA to 20 mA, 4 mA to 20 mA, and ±20 mA current ranges.
The stability of the output current value over temperature is
dependent on the stability of the value of RSET. As a method of
improving the stability of the output current over temperature,
an external low drift resistor can be connected to the REXT1
and REXT2 pins of the AD5750/AD5750-1, which can be used
instead of the internal resistor. The external resistor is selected
via the input shift register. If the external resistor option is not
used, the REXT1 and REXT2 pins should be left floating.
PROGRAMMABLE OVERRANGE MODES
The AD5750/AD5750-1 contain an overrange mode for most of
the available ranges. The overranges are selected by configuring
the R3, R1, R1, and R0 bits (or pins) accordingly.
In voltage mode, the overranges are typically 20%, providing
programmable output ranges of 0 V to 6 V, 0 V to 12 V, ±6 V,
and ±12 V. The analog input remains the same.
In current mode, the overranges are typically 2%. In current
mode, the overrange capability is only available on three ranges,
0 mA to 20 mA, 0 mA to 24 mA, and 4 mA to 20 mA. For these
ranges, the analog input also remains the same (0 V to 4.096 V
for the AD5750, 0 V to 2.5 V for the AD5750-1).
PACKET ERROR CHECKING
To verify that data has been received correctly in noisy environ-
ments, the AD5750/AD5750-1 offer the option of error checking
based on an 8-bit (CRC-8) cyclic redundancy check. The device
controlling the AD5750/AD5750-1 should generate an 8-bit
frame check sequence using the following polynomial:
C(x) = x8 + x2 + x1 + 1
This is added to the end of the data-word, and 24 data bits are
sent to the AD5750/AD5750-1 before taking SYNC high. If the
AD5750/AD5750-1 receive a 24-bit data frame, the parts
perform the error check when SYNC goes high. If the check is
valid, then the data is written to the selected register. If the error
check fails, the FAULT pin goes low and Bit D3 of the status
register is set. After reading this register, this error flag is
cleared automatically and the FAULT pin goes high again.
SCLK
SDIN
SYNC
UPDATE ON SYNC HIGH
D15
(MSB)
D0
(LSB)
16-BIT DATA
16-BIT DATA TRANSER—NO ERROR CHECKING
SCLK
SDIN
SYNC
FAULT
UPDATE AFTER SYNC HIGH
ONLY IF ERROR CHECK PASSED
FAULT GOES LOW IF
ERROR CHECK FAILS
D23
(MSB)
D8
(LSB)
D7
D0
16-BIT DATA
8-BIT FCS
16-BIT DATA TRANSER WITH ERROR CHECKING
072
68-
049
Figure 55. PEC Error Checking Timing
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相关代理商/技术参数 |
参数描述 |
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| AD5750-1BCPZ-REEL7 | 功能描述:IC CURR/VOLT OUT DVR 32LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:73 系列:Over-The-Top® 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.07 V/µs 增益带宽积:200kHz -3db带宽:- 电流 - 输入偏压:1nA 电压 - 输入偏移:285µV 电流 - 电源:50µA 电流 - 输出 / 通道:25mA 电压 - 电源，单路/双路(±):2 V ~ 44 V，±1 V ~ 22 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WFDFN 裸露焊盘 供应商设备封装:16-DFN-EP（5x3） 包装:管件 |
| AD5750-2 | 制造商:AD 制造商全称:Analog Devices 功能描述:Industrial Current/Voltage Output Driver |
| AD5750-2BCPZ | 功能描述:IC CURR/VOLT OUT DRIVER 32LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
| AD5750-2BCPZ-RL7 | 功能描述:IC CURR/VOLT OUT DRVR 32LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:73 系列:Over-The-Top® 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.07 V/µs 增益带宽积:200kHz -3db带宽:- 电流 - 输入偏压:1nA 电压 - 输入偏移:285µV 电流 - 电源:50µA 电流 - 输出 / 通道:25mA 电压 - 电源，单路/双路(±):2 V ~ 44 V，±1 V ~ 22 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-WFDFN 裸露焊盘 供应商设备封装:16-DFN-EP（5x3） 包装:管件 |
| AD5750ACPZ | 功能描述:IC CURR/VOLT OUT DVR 32LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.028 V/µs 增益带宽积:105kHz -3db带宽:- 电流 - 输入偏压:3nA 电压 - 输入偏移:100µV 电流 - 电源:3.3µA 电流 - 输出 / 通道:12mA 电压 - 电源，单路/双路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:剪切带 (CT) 其它名称:OP481GRUZ-REELCT |
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