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参数资料
| 型号： | ADR318ARJ-R2 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 8/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 1.8V SOT23-5 |
| 标准包装： | 1 |
| 基准类型： | 串联，精度 |
| 输出电压： | 1.8V |
| 容差： | ±0.27% |
| 温度系数： | 25ppm/°C |
| 输入电压： | 2.4 V ~ 15 V |
| 通道数： | 1 |
| 电流 - 静态： | 140µA |
| 电流 - 输出： | 5mA |
| 工作温度： | 0°C ~ 70°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | SC-74A，SOT-753 |
| 供应商设备封装： | SOT-23-5 |
| 包装： | 标准包装 |
| 其它名称： | ADR318ARJ-R2DKR |
ADR318
TERMINOLOGY
TCV O ? ?
?? = V ( 25 ° C ) × ( T ? T ) × 10
(1)
Temperature Coefficient
Temperature coefficient is the change of output voltage with
respect to operating temperature changes, normalized by the
output voltage at 25°C. This parameter is expressed in ppm/°C,
and can be determined with the following equation:
ppm ? V O ( T 2 ) ? V O ( T 1 )
6
? ° C O 2 1
where:
where:
V O (t 0 ) = V O at 25°C at Time 0.
V O (t 1 ) = V O at 25°C after 1000 hours of operation at 25°C.
Thermal Hysteresis
Thermal hysteresis is the change of output voltage after the
device is cycled through temperature from +25°C to ?40°C to
+125°C and back to +25°C. This is a typical value from a sample
of parts put through such a cycle.
V O _ HYS [ ppm ] =
V O (25°C) = V O at 25°C.
V O (T 1 ) = V O at Temperature 1.
V O (T 2 ) = V O at Temperature 2.
V O_HYS = V O (25°C) ? V O_TC
V O ( 25 ° C ) ? V O _ TC
V O ( 25 ° C )
× 10 6
(3)
Long-Term Stability
Long-term stability is the typical shift of output voltage at 25°C
on a sample of parts subjected to a test of 1000 hours at 25°C.
Δ V O = V O (t 0 ) ? V O (t 1 )
where:
V O (25°C) = V O at 25°C.
V O_TC = V O at 25°C after temperature cycle at +25°C to ?40°C to
+125°C and back to +25°C.
Δ V O [ ppm ] =
V O ( t 0 ) ? V O ( t 1 )
V O ( t 0 )
× 10 6
(2)
Rev. A | Page 8 of 12
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