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| 型号： | ISL21009CFB841Z |
| 厂商： | Intersil |
| 文件页数： | 17/19页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 4.096V 8SOIC |
| 标准包装： | 100 |
| 系列： | FGA™ |
| 基准类型： | 串联，精度 |
| 输出电压： | 4.096V |
| 容差： | ±1% |
| 温度系数： | 5ppm/°C |
| 输入电压： | 4.5 V ~ 16.5 V |
| 通道数： | 1 |
| 电流 - 静态： | 180µA |
| 电流 - 输出： | 7mA |
| 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-SOIC |
| 包装： | 管件 |
ISL21009
Temperature Coefficient
The limits stated for temperature coefficient (tempco) are
governed by the method of measurement. The overwhelming
standard for specifying the temperature drift of a reference is to
measure the reference voltage at two temperatures, take the
total variation, (V HIGH – V LOW ), and divide by the temperature
extremes of measurement (T HIGH – T LOW ). The result is
divided by the nominal reference voltage (at T = +25°C) and
multiplied by 10 6 to yield ppm/°C. This is the “Box” method for
specifying temperature coefficient.
Output Voltage Adjustment
The output voltage can be adjusted up or down by 2.5% by
placing a potentiometer from V OUT to GND and connecting the
wiper to the TRIM pin. The TRIM input is high impedance so no
series resistance is needed. The resistor in the potentiometer
should be a low tempco (<50ppm/°C) and the resulting voltage
divider should have very low tempco <5ppm/°C. A digital
potentiometer such as the ISL95810 provides a low tempco
resistance and excellent resistor and tempco matching for trim
applications.
Typical Application Circuits
V IN = +5.0V
R = 200 Ω
2N2905
V IN
ISL21009
V OUT
2.5V/50mA
V OUT = 2.50V
0.001μF
GND
FIGURE 59. PRECISION 2.5V, 50mA REFERENCE
+3.5V TO 16.5V
0.1μF
10μF
V IN
V OUT
ISL21009-25
V OUT = 2.50V
GND
0.001μF
V CC
R H
V OUT
X9119
SDA
+
(UNBUFFERED)
2-WIRE BUS
SCL
–
EL8178
V OUT
(BUFFERED)
V SS
R L
FIGURE 60. 2.5V FULL SCALE LOW-DRIFT, LOW NOISE, 10-BIT ADJUSTABLE VOLTAGE SOURCE
17
FN6327.7
September 16, 2009
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相关代理商/技术参数 |
参数描述 |
|---|---|
| ISL21009CFB841Z-TK | 功能描述:基准电压& 基准电流 096VFERENCE I/A=+/-1 0MV T/C=5PPM 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 |
| ISL21009CFB850Z | 功能描述:基准电压& 基准电流 5 0VFERENCE I/A=+/-1 0MV T/C=5PPM 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 |
| ISL21009CFB850Z-TK | 功能描述:基准电压& 基准电流 5 0VFERENCE I/A=+/-1 0MV T/C=5PPM 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 |
| ISL21009CMB825EP | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Voltage Input Precision, Low Noise FGA? Voltage References |
| ISL21009CMB850EP | 制造商:INTERSIL 制造商全称:Intersil Corporation 功能描述:High Voltage Input Precision, Low Noise FGA? Voltage References |
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