参数资料
| 型号： | AD8290ACPZ-R2 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 9/20页 |
| 文件大小： | 0K |
| 描述： | IC AMP CS CMOS LP 16LFCSP |
| 标准包装： | 250 |
| 放大器类型： | 电流检测 |
| 电路数： | 1 |
| -3db带宽： | 250Hz |
| 电流 - 输入偏压： | 100pA |
| 电流 - 电源： | 1.2mA |
| 电压 - 电源，单路/双路(±)： | 2.6 V ~ 5.5 V，±1.3 V ~ 2.75 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-UFQFN 裸露焊盘，CSP |
| 供应商设备封装： | 16-LFCSP-UQ |
| 包装： | 带卷 (TR) |
AD8290
Rev. B | Page 17 of 20
MAXIMIZING PERFORMANCE THROUGH PROPER
LAYOUT
To achieve the maximum performance of the AD8290, care
should be taken in the circuit board layout. The PCB surface
must remain clean and free of moisture to avoid leakage currents
between adjacent traces. Surface coating of the circuit board
reduces surface moisture and provides a humidity barrier,
reducing parasitic resistance on the board.
RSET should be placed close to RSET (Pin 11) and GND (Pin 10).
The paddle on the bottom of the package should not be connected
to any potential and should be floating.
For high impedance sources, the PCB traces from the AD8290
inputs should be kept to a minimum to reduce input bias
current errors.
POWER SUPPLY BYPASSING
The AD8290 uses internally generated clock signals to perform
autocorrection. As a result, proper bypassing is necessary to
achieve optimum performance. Inadequate or improper bypassing
of the supply lines can lead to excessive noise and offset voltage.
A 0.1 μF surface-mount capacitor should be connected between
Pin 2 (VCC) and Pin 10 (GND) when operating with a single
supply and should be located as close as possible to those two pins.
DUAL-SUPPLY OPERATION
The AD8290 can be configured to operate in dual-supply mode.
An example of such a circuit is shown in Figure 46, where the
AD8290 is powered by ±1.8 V supplies. When operating with
dual supplies, pins that are normally referenced to ground in the
single-supply mode, now need to be referenced to the negative
supply. These pins include the following: Pin 1, Pin 7, Pin 8, Pin 9,
Pin 10, Pin 12, and Pin 16. External components, such as RSET, the
sensing bridge, and the antialiasing filter capacitor at the output,
should also be referenced to the negative supply. Additionally,
two bypass capacitors should be added beyond what is necessary
for single-supply operation: one between the negative supply
and ground, and the other between the positive and negative
supplies.
When operating in dual-supply mode, the specifications change
and become relative to the negative supply. The input voltage
range minimum shifts from 0.2 V to 0.2 V above the negative
supply (in this example: 1.6 V), the output voltage range shifts
from a minimum of 0.075 V to 0.075 V above the negative supply
(in this example: 1.725 V), and the excitation current pin
voltage minimum shifts from 0 V to 1.8 V in this example.
The maximum specifications of these three parameters are
For other specifications, both the minimum and maximum
specifications change. The output offset shifts from a minimum
of +865 mV and maximum of +935 mV to a minimum of
935 mV and a maximum of 865 mV in the example. In
addition, the logic levels for the ENBL operation should be
adjusted accordingly.
0
67
45-
0
29
CBRIDGE
NC = NO CONNECT
ENBL
VOUT
VOUT
VCC
VINP
VINN
IOUT
RSET
GND
AD8290
4
3
2
10
11
15
14
13
CFILTER
6.8nF
C1
0.1F
CF2
CF1
5
6
C2
68nF
RSET
692 TO 3k
1.8V
C3
0.1F
–1.8V
C5
0.1F
NC
16
1
12
9
7
8
–1.8V
NOTES
LAYOUT CONSIDERATIONS:
1. KEEP C1 CLOSE TO PIN 2 AND PIN 10.
2. KEEP C3 CLOSE TO PIN 2.
3. KEEP C5 CLOSE TO PIN 10.
4. KEEP RSET CLOSE TO PIN 11.
Figure 46. Typical Dual-Supply Connections
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相关代理商/技术参数 |
参数描述 |
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| AD8290ACPZ-R7 | 功能描述:IC SENSOR AMP CMOS G-50 16-LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°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 |
| AD8290ACPZ-RL | 功能描述:IC AMP CS CMOS LP 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:14-SOIC（0.154"，3.90mm 宽） 供应商设备封装:14-SOIC 包装:带卷 (TR) |
| AD8293 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Noise, Low Gain Drift, G = 2000 Instrumentation Amplifier |
| AD8293G160 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Cost, Zero-Drift In-Amp with Filter and Fixed Gain |
| AD8293G160ARJZ-R2 | 功能描述:IC AMP INST R-R LDRIFT SOT23-8 RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:160 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:10 V/µs 增益带宽积:9MHz -3db带宽:- 电流 - 输入偏压:1pA 电压 - 输入偏移:250µV 电流 - 电源:730µA 电流 - 输出 / 通道:28mA 电压 - 电源，单路/双路(±):2.7 V ~ 5.5 V，±1.35 V ~ 2.75 V 工作温度:-40°C ~ 125°C 安装类型:表面贴装 封装/外壳:16-SOIC（0.154"，3.90mm 宽） 供应商设备封装:16-SOIC N 包装:管件 |
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