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参数资料
| 型号： | ISL21010CFH315Z-TK |
| 厂商： | Intersil |
| 文件页数： | 18/20页 |
| 文件大小： | 0K |
| 描述： | IC INTERFACE |
| 标准包装： | 1,000 |
| 系列： | * |
ISL21010
Applications Information
Micropower Operation
The ISL21010 consumes very low supply current due to the
proprietary bandgap technology. Low noise performance is
achieved using optimized biasing techniques. Supply current is
typically 48μA and noise in the 0.1Hz to 10Hz bandwidth is
58μV P-P to 100μV P-P (V OUT = 2.048V, 3.0V, and 3.3V) benefitting
precision, low noise portable applications such as handheld
meters and instruments.
Data Converters in particular can utilize the ISL21010 as an
external voltage reference. Low power DAC and ADC circuits will
realize maximum resolution with lowest noise. The device
Maintains output voltage during conversion cycles with fast
response, although it is helpful to add an output capacitor,
typically 1μF.
Board Mounting Considerations
For applications requiring the highest accuracy, board mounting
location should be reviewed. The device uses a plastic SOIC
package, which will subject the die to mild stresses when the
Printed Circuit (PC) board is heated and cooled, slightly changing
the shape. Placing the device in areas subject to slight twisting
can cause degradation of the accuracy of the reference voltage
Typical Application Circuit
VIN
2.1V – 5.5V
0.1μF
ISL21010
due to these die stresses. It is normally best to place the device
near the edge of a board, or the shortest side, as the axis of
bending is most limited at that location. Mounting the device in a
cutout also minimizes flex. Obviously mounting the device on
flexprint or extremely thin PC material will likewise cause loss of
reference accuracy.
Board Assembly Considerations
Bandgap references provide high accuracy and low temperature
drift but some PC board assembly precautions are necessary.
Normal Output voltage shifts of 100μV to 4mV can be expected
with Pb-free reflow profiles or wave solder on multi-layer FR4 PC
boards. Precautions should be taken to avoid excessive heat or
extended exposure to high reflow or wave solder temperatures,
this may reduce device initial accuracy.
Noise Performance and Reduction
The recommended capacitive load range for the ISL21010 is from
0.1μF to 10.0μF (0.22μF minimum required for 1.024V option) to
ensure stability and best transient performance. Parallel 0.1μF
(0.22μF for 1.024V) and 10μF capacitors can be used to optimize
performance as well. The noise specification stated in the
Electrical Specification tables (starting on page 4) is for 0.1μF
(0.22μF for 1.024V option) capacitive load, and larger values will
reduce the output noise level.
10μF
VIN
VOUT
VOUT
SENSE
0.1μF - 10μF
GND
LOAD
FIGURE 53. KELVIN SENSED LOAD
18
FN7896.1
December 8, 2011
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相关代理商/技术参数 |
参数描述 |
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| ISL21010CFH320Z-TK | 功能描述:基准电压& 基准电流 PBFREE PRECISION 2 048V LW V FGA"F 0 2% RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| ISL21010CFH325Z-TK | 功能描述:基准电压& 基准电流 PBFREE PRECISION 2 50V LW V FGA"F 0 2% RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| ISL21010CFH330Z-TK | 功能描述:基准电压& 基准电流 PBFREE PRECISION 3 00V LW V FGA"F 0 2% RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| ISL21010CFH333Z-TK | 功能描述:基准电压& 基准电流 PBFREE PRECISION 3 30V LW V FGA"F 0 2% RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
| ISL21010CFH341Z-TK | 功能描述:基准电压& 基准电流 PBFREE PRECISION 4 096V LW V FGA"F 0 2% RoHS:否 制造商:STMicroelectronics 产品:Voltage References 拓扑结构:Shunt References 参考类型:Programmable 输出电压:1.24 V to 18 V 初始准确度:0.25 % 平均温度系数（典型值）:100 PPM / C 串联 VREF - 输入电压（最大值）: 串联 VREF - 输入电压（最小值）: 分流电流（最大值）:60 mA 最大工作温度:+ 125 C 封装 / 箱体:SOT-23-3L 封装:Reel |
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