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参数资料
| 型号： | ADR01ARZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/20页 |
| 文件大小： | 0K |
| 描述： | IC VREF SERIES PREC 10V 8-SOIC |
| 设计资源： | Precision, Bipolar Configuration for the AD5546/56 DAC (CN0024) Precision, Bipolar, Configuration for AD5547/AD5557 DAC (CN0028) Unipolar, Precision DC Digital-to-Analog Conversion Using AD5426/32/43 8-Bit to12-Bit DACs (CN0034) Unipolar, Precision DC Digital-to-Analog Conversion using AD5450/1/2/3 8-14-Bit DACs (CN0052) Precision, Bipolar, Configuration for AD5450/1/2/3 8-14bit Multiplying DACs (CN0053) |
| 标准包装： | 1,000 |
| 基准类型： | 串联，精度 |
| 输出电压： | 10V |
| 容差： | ±0.1% |
| 温度系数： | 10ppm/°C |
| 输入电压： | 12 V ~ 36 V |
| 通道数： | 1 |
| 电流 - 静态： | 1mA |
| 电流 - 输出： | 10mA |
| 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-SO |
| 包装： | 带卷 (TR) |
ADR01/ADR02/ADR03/ADR06
Data Sheet
0.80
0.75
V IN = 15V
SAMPLE SIZE = 5
V IN
I IN
ADR01/
0.70
ADR02/
ADR03/
V OUT
0.65
0.60
0.55
0.50
ΔV TEMP /ΔT ≈ 1.96mV/°C
ADR06
GND
R SET
I Q ≈ 0.6mA
R L
V L
I SET = (V OUT – V L )/R SET
I L = I SET + I Q
0.45
0.40
–50
–25
0
25
50
75
100
125
Figure 38. Low Cost Current Source
I L =
V REF × D
TEMPERATURE (°C)
Figure 36. Voltage at TEMP Pin vs. Temperature
The TEMP function is provided as a convenience rather than a
precise feature. Because the voltage at the TEMP node is
acquired from the band gap core, current pulling from this pin
has a significant effect on V OUT . Care must be taken to buffer the
TEMP output with a suitable low bias current op amp, such as
the AD8601, AD820, or OP1177, all of which result in less than
a 100 μV change in ?V OUT (see Figure 37). Without buffering,
even tens of microamps drawn from the TEMP pin can cause
V OUT to fall out of specification.
PRECISION CURRENT SOURCE WITH
ADJUSTABLE OUTPUT
Alternatively, a precision current source can be implemented
with the circuit shown in Figure 39. By adding a mechanical or
digital potentiometer, this circuit becomes an adjustable current
source. If a digital potentiometer is used, the load current is
simply the voltage across Terminal B to Terminal W of the
digital potentiometer divided by R SET .
(1)
R SET
15V
V IN
U1
ADR01/
ADR02/
ADR03/
ADR06
V IN V OUT
V O
where D is the decimal equivalent of the digital potentiometer
input code.
U1
ADR01/
ADR02/
W
V TEMP
1.9mV/°C
U2
V+
OP1177
V–
TEMP TRIM
GND
+12V
ADR03/
ADR06
V IN V OUT
TEMP TRIM
GND
0V TO (5V + V L )
B
AD5201
100k ?
A
Figure 37. Temperature Monitoring
+12V
R SET
1k?
U2
LOW COST CURRENT SOURCE
V+
OP1177
Unlike most references, the ADR01/ADR02/ADR03/ADR06
–5V TO V L
V–
V L
R L 1k?
employ an NPN Darlington in which the quiescent current
remains constant with respect to the load current, as shown in
shown in Figure 38 where I SET = (V OUT ? V L )/R SET . I L is simply
the sum of I SET and I Q . Although simple, I Q varies typically from
0.55 mA to 0.65 mA, limiting this circuit to general-purpose
applications.
–12V I L
Figure 39. Programmable 0 mA to 5 mA Current Source
To optimize the resolution of this circuit, dual-supply op amps
should be used because the ground potential of ADR02 can
swing from ?5.0 V at zero scale to V L at full scale of the
potentiometer setting.
Rev. R | Page 16 of 20
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相关代理商/技术参数 |
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| ADR01AUJ-R2 | 功能描述:IC VREF SERIES PREC 10V TSOT23-5 RoHS:否 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:5V 容差:±0.5% 温度系数:100ppm/°C 输入电压:- 通道数:1 电流 - 阴极:80µA 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:TO-236-3，SC-59，SOT-23-3 供应商设备封装:SOT-23-3 包装:带卷 (TR) 其它名称:LM4040CIM3-5.0MLTRLM4040CIM3-5.0MLTR-ND |
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| ADR01BKS-R2 | 制造商:Analog Devices 功能描述: |
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