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| 型号： | AD780BR |
| 厂商： | Analog Devices Inc |
| 文件页数： | 7/12页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES SHUNT PREC 8-SOIC |
| 设计资源： | Using AD8599 as an Ultralow Distortion Driver for the AD7991 (CN0043) Using AD8599 as an Ultralow Distortion Driver for the AD7995 (CN0044) Using AD8599 as an Ultralow Distortion Driver for the AD7999 (CN0045) Using AD7328 in Appls with Single-Ended Industrial-Level Signals (CN0047) AD5382 Channel Monitor Function (CN0012) AD5383 Channel Monitor Function (CN0015) AD5390/91/92 Channel Monitor Function (CN0030) Measuring -48 V High-Side Current Using AD629, AD8603, AD780, and AD7453 (CN0100) High Voltage, High Precision Current Sensing with Output Level Shifting Using AD8210 and AD8274 (CN0116) |
| 标准包装： | 1 |
| 基准类型： | 串联，并联，可调节，精度 |
| 输出电压： | ±2.5V，±3V |
| 容差： | ±1mV |
| 温度系数： | 3ppm/°C |
| 输入电压： | 4 V ~ 36 V |
| 通道数： | 1 |
| 电流 - 静态： | 1mA |
| 电流 - 输出： | 10mA |
| 工作温度： | -40°C ~ 85°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-SO |
| 包装： | 管件 |
Data Sheet
2
7
2.0
AD780
+V IN
NC
1.6
1 ? F
1
NC
AD780
V OUT 6
1.2
TRIM 5
0.8
C2
3
TEMP
O/P SELECT
2.5V – NC
C1
0.4
GND
3.0V – GND
4
NC = NO CONNECT
8
0
–0.4
Figure 9. Noise Reduction Circuit
–0.8
–60
–40
–20
0
20 40 60 80
100
120
140
NOISE COMPARISON
The wideband noise performance of the AD780 can also be
expressed in ppm. The typical performance with C1 and C2 is
0.6 ppm; without external capacitors, typical performance is
1.2 ppm.
This performance is, respectively, 7× and 3× lower than the
specified performance of the LT1019.
TEMPERATURE ( ? C)
Figure 11. Typical AD780BN Temperature Drift
TEMPERATURE OUTPUT PIN
The AD780 provides a TEMP output (Pin 3) that varies linearly
with temperature. This output can be used to monitor changes
in system ambient temperature, and to initiate calibration of the
system, if desired. The voltage V TEMP is 560 mV at 25°C, and the
temperature coefficient is approximately 2 mV/°C.
NO AMPLIFIER
100
90
10
0%
20 ? V
10ms
temperature taken at the output of the op amp with a
noninverting gain of 5.
4.25
CIRCUIT CALIBRATED AT 25 ? C
REFER TO FIGURE 13
4.00
3.75
3.50
10mV PER ? C
3.25
3.00
2.75
10Hz TO 10kHz
2.50
Figure 10. Reduced Noise Performance with C1 = 100 μF, C2 = 100 nF
TEMPERATURE PERFORMANCE
2.25
2.00
The AD780 provides superior performance over temperature by
–75
–50
–25
0 25 50 75
TEMPERATURE ( ? C)
100
125
150
means of a combination of patented circuit design techniques,
precision thin-film resistors, and drift trimming. Temperature
performance is specified in terms of ppm/°C; because of
nonlinearity in the temperature characteristic, the box test
method is used to test and specify the part. The nonlinearity
takes the form of the characteristic S-shaped curve shown in
this curve, enclosing the maximum and minimum output
voltages over the specified temperature range. The specified
drift is equal to the slope of the diagonal of this box.
Figure 12. Temperature Pin Transfer Characteristic
Since the TEMP voltage is acquired from the band gap core
circuit, current pulled from this pin has a significant effect on
V OUT . Care must be taken to buffer the TEMP output with a
suitable op amp, e.g., an OP07, AD820, or AD711 (all of which
would result in less than a 100 μV change in VOUT). The
relationship between I TEMP and V OUT is
Δ V OUT = 5.8 mV/μA I TEMP (2.5 V Range )
or
Δ V OUT = 6.9 mV/μA I TEMP (3.0 V Range )
Rev. F | Page 7 of 12
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD780BR-REEL | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| AD780BR-REEL7 | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:否 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:2,000 系列:- 基准类型:旁路，可调节，精度 输出电压:1.24 V ~ 16 V 容差:±0.5% 温度系数:- 输入电压:1.24 V ~ 16 V 通道数:1 电流 - 阴极:100µA 电流 - 静态:- 电流 - 输出:20mA 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:TO-226-3、TO-92-3（TO-226AA）成形引线 供应商设备封装:TO-92-3 包装:带卷 (TR) |
| AD780BRZ | 功能描述:IC VREF SERIES SHUNT PREC 8-SOIC RoHS:是 类别:集成电路 (IC) >> PMIC - 电压基准 系列:- 标准包装:3,000 系列:- 基准类型:旁路，精度 输出电压:3V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:82µA 电流 - 静态:- 电流 - 输出:15mA 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:6-TSSOP（5 引线），SC-88A，SOT-353 供应商设备封装:SC-70-5 包装:带卷 (TR) 其它名称:296-20888-2 |
| AD780BRZ | 制造商:Analog Devices 功能描述:Voltage Reference IC |
| AD780BRZ | 制造商:Analog Devices 功能描述:VOLTAGE REFERENCE 2.5V OR 3V |
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