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| 型号： | AD8556ARZ-REEL7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 18/28页 |
| 文件大小： | 0K |
| 描述： | IC AMP CHOPPER 2MHZ 10MA 8SOIC |
| 标准包装： | 1,000 |
| 系列： | DigiTrim® |
| 放大器类型： | 断路器（零漂移） |
| 电路数： | 1 |
| 转换速率： | 1.2 V/µs |
| 增益带宽积： | 2MHz |
| 电流 - 输入偏压： | 49nA |
| 电压 - 输入偏移： | 2µV |
| 电流 - 电源： | 2mA |
| 电流 - 输出 / 通道： | 10mA |
| 电压 - 电源，单路/双路(±)： | 4.5 V ~ 5.5 V |
| 工作温度： | -40°C ~ 140°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) |
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AD8556
Rev. A | Page 25 of 28
To show the benefits that the AD8556 brings to new applications
where EMI/RFI signals are present, a part was programmed
with a gain of 70 and a dc offset of 2.5 V to produce a VOUT of
0 V. A test circuit like that shown in Figure 52 was used.
Figure 52 simulates the presence of a noisy common-mode
signal, and Figure 53 shows the response dc values at VOUT.
AD8556
VCC
VEE
FILTER
DATA
–IN
+IN
VCLAMP
VOUT
+2.5V
–2.5V
U3
VARIABLE
V3
1
2
3
45
6
7
8
+2.5V
VOUT
05
44
8-
05
1
+
–
Figure 52. Test Circuit to Show AD8556 Performance
Exposed to Common-Mode RFI/EMI Signals
05
44
8-
05
4
–20
0
20
40
60
80
100
0
200
400
600
800
1000
1200
FREQUENCY (MHz)
DE
V
IA
T
ION
FR
OM
D
C
OU
TP
U
T
(
m
V
)
NON-ENHANCED FOR EMI
AD8556 (ENHANCED PART FOR EMI)
Figure 53. DC Offset Values at VOUT Caused by Frequency Seep of Input
The differential bandwidth defines the frequency response of
the filters with a differential signal applied between the two
inputs, VPOS (that is, +IN ) and VNEG (that is, –IN). Figure 54
shows the circuit used to test for AD8556 EMI/RFI susceptibility.
The part is programmed as previously stated during the
common-mode testing.
AD8556
VCC
VEE
FILTER
DATA
–IN
+IN
VCLAMP
VOUT
+2.5V
–2.5V
U2
200mV p-p
V2
1
2
3
45
6
7
8
+2.5V
VOUT
0
54
48
-05
2
+
–
Figure 54. Test Circuit to Show AD8556 Performance Exposed to
Differential Mode RFI/EMI Signals
The response of AD8556 to EMI/RFI differential signals is
shown in Figure 55.
0
544
8-
0
55
–1400
–1200
–1000
–800
–600
–400
–200
0
200
400
600
0
200
400
600
800
1000
1200
FREQUENCY (MHz)
D
C
O
F
S
ET
(mV)
AD8556
NON-ENHANCED PART
Figure 55. Response of AD8556 to EMI/RFI Differential Signals
To make a board robust against EMI, the leads at VPOS and
VNEG should be as similar as possible. In this way, any EMI
received by the VPOS and VNEG pins will be similar (that is, a
common-mode input), and rejected by the AD8556. Furthermore,
additional filtering at the VPOS and VNEG pins should give a
better reduction of unwanted behavior compared with filtering
at the other pins.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8556CP-EBZ | 功能描述:AD8556 DigiTrim? Series 1 - Single Channels per IC Chopper (Zero-Drift) Amplifier Evaluation Board 制造商:analog devices inc. 系列:DigiTrim? 零件状态:有效 每 IC 通道数:1 - 单 放大器类型:断路器（零漂移） 输出类型:单端 压摆率:1.2 V/μs -3db 带宽:- 电流 - 输出/通道:10mA 工作温度:-40°C ~ 140°C 电流 - 电源（主 IC）:2mA 电压 - 电源，单/双（±）:4.5 V ~ 5.5 V 板类型:完全填充 所含物品:板 使用的 IC/零件:AD8556 标准包装:1 |
| AD8556-EVALZ | 制造商:Analog Devices 功能描述:EVALUATION BOARD - Boxed Product (Development Kits) |
| AD8557 | 制造商:AD 制造商全称:Analog Devices 功能描述:Wide Supply Range, Micropower, |
| AD85571 | 制造商:AD 制造商全称:Analog Devices 功能描述:10 MHz, 20 V/レs, G = 1, 10, 100, 1000 i CMOS㈢ Programmable Gain Instrumentation Amplifier |
| AD8557ACPZ-R2 | 功能描述:IC AMP CHOPPER 2MHZ 55MA 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:DigiTrim® 标准包装:50 系列:- 放大器类型:J-FET 电路数:2 输出类型:- 转换速率:13 V/µs 增益带宽积:3MHz -3db带宽:- 电流 - 输入偏压:65pA 电压 - 输入偏移:3000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):7 V ~ 36 V，±3.5 V ~ 18 V 工作温度:-40°C ~ 85°C 安装类型:通孔 封装/外壳:8-DIP（0.300"，7.62mm） 供应商设备封装:8-PDIP 包装:管件 |
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