- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄6061 > AD8209WBRMZ (Analog Devices Inc)IC AMP DIFF HV 8MSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD8209WBRMZ |
| 廠商： | Analog Devices Inc |
| 文件頁數(shù)： | 6/16頁 |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF HV 8MSOP |
| 產(chǎn)品培訓(xùn)模塊： | Top Five Instrumentation Amplifier Problems |
| 標(biāo)準(zhǔn)包裝： | 50 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 1 V/µs |
| 增益帶寬積： | 80kHz |
| 電流 - 輸入偏壓： | 50nA |
| 電壓 - 輸入偏移： | 2000µV |
| 電流 - 電源： | 1.6mA |
| 電壓 - 電源，單路/雙路(±)： | 4.5 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 125°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 8-TSSOP，8-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 8-MSOP |
| 包裝： | 管件 |
| 產(chǎn)品目錄頁面： | 765 (CN2011-ZH PDF) |
AD8209
Data Sheet
Rev. B | Page 14 of 16
GAIN TRIM
Figure 31 shows a method for incremental gain trimming by
using a trim potentiometer and an external resistor, REXT.
The following approximation is useful for small gain ranges:
ΔG ≈ (10 M ÷ REXT)%
For example, using this equation, the adjustment range is ±2%
for REXT = 5 M and ±10% for REXT = 1 M.
GND
NC
–IN
+IN
A1
+VS
A2
REXT
OUT
AD8209
5V
VDIFF
VCM
NC = NO CONNECT
08461-
033
OUTPUT
GAIN TRIM
20k MIN
+
–
+
–
Figure 31. Incremental Gain Trimming
Internal Signal Overload Considerations
When configuring the gain for values other than 14, the maximum
input voltage with respect to the supply voltage and ground must
be considered because either the preamplifier or the output buffer
reaches its full-scale output (VS 0.1 V) with large differential
7 for overall gains of ≤7 because the preamplifier, with its fixed
gain of 7 V/V, reaches its full-scale output before the output
buffer. For gains greater than 7, the swing at the buffer output
reaches its full scale first and then limits the AD8209 input to
(VS 0.1) ÷ G, where G is the overall gain.
LOW-PASS FILTERING
In many transducer applications, it is necessary to filter the signal
to remove spurious high frequency components, including noise,
or to extract the mean value of a fluctuating signal with a peak-
to-average ratio (PAR) greater than unity. For example, a full-wave
rectified sinusoid has a PAR of 1.57, a raised cosine has a PAR
of 2, and a half-wave sinusoid has a PAR of 3.14. Signals with
large spikes may have PARs of 10 or more.
When implementing a filter, the PAR should be considered so
that the output of the AD8209 preamplifier (A1) does not clip
before A2; otherwise, the nonlinearity would be averaged and
appear as an error at the output. To avoid this error, both amplifiers
should clip at the same time. This condition is achieved when the
PAR is no greater than the gain of the second amplifier (2 for
the default configuration). For example, if a PAR of 5 is expected,
the gain of A2 should be increased to 5.
Low-pass filters can be implemented in several ways by using
the features provided by the AD8209. In the simplest case, a
single-pole filter (20 dB/decade) is formed when the output
of A1 is connected to the input of A2 via the internal 100 k
resistor by tying Pin 3 to Pin 4 and adding a capacitor from this
node to ground, as shown in Figure 32. If a resistor is added
across the capacitor to lower the gain, the corner frequency
increases; therefore, gain should be calculated using the parallel
sum of the resistor and 100 k.
GND
NC
–IN
+IN
A1
+VS
A2
OUT
AD8209
5V
VDIFF
VCM
CF
NC = NO CONNECT
08461-
034
OUTPUT
fC =
1
2
πC105
C IN FARADS
+
–
+
–
Figure 32. Single-Pole, Low-Pass Filter Using the Internal 100 k Resistor
If the gain is raised using a resistor, as shown in Figure 30, the
corner frequency is lowered by the same factor as the gain is raised.
Therefore, using a resistor of 200 k (for which the gain would
be doubled), results in a corner frequency scaled to 0.796 Hz F
(0.039 F for a 20 Hz corner frequency).
GND
NC
–IN
+IN
A1
+VS
A2
OUT
AD8209
5V
VDIFF
VCM
C
NC = NO CONNECT
08461-
035
OUTPUT
fC(Hz) = 1/C(F)
255k
+
–
+
–
Figure 33. Two-Pole, Low-Pass Filter
A two-pole filter with a roll-off of 40 dB/decade can be
implemented using the connections shown in Figure 33. This
configuration is a Sallen-Key form based on a ×2 amplifier. It is
useful to remember that a two-pole filter with a corner frequency
of f2 and a single-pole filter with a corner frequency of f1 have
Using the standard resistor value shown in Figure 33 and capacitors
of equal values, the corner frequency is conveniently scaled to
1 Hz F (0.05 F for a 20 Hz corner frequency). A maximal flat
response occurs when the resistor is lowered to 196 k, scaling
the corner frequency to 1.145 Hz F. The output offset is raised
by approximately 5 mV (equivalent to 250 V at the input pins).
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8279ARZ | IC AMP DIFF LP 14SOIC |
| AD8273ARZ | IC AMP AUDIO 2CH DIFF 14SOIC |
| CM1230-02CP | TVS ARRAY ESD PROT 2CH WLCSP4 |
| LTC6102HVCMS8#PBF | IC AMP CURRENT SENSE 8-MSOP |
| AD8056ANZ | IC OPAMP VF DUAL LDIST LN 8DIP |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8209WBRMZ | 制造商:Analog Devices 功能描述:IC DIFFERENTIAL AMP 80kHZ 1V/ MSOP8 |
| AD8209WBRMZ-R7 | 功能描述:IC AMP DIFF PREC 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| AD8209WBRMZ-RL | 功能描述:IC AMP DIFF PREC 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類型:通用 電路數(shù):2 輸出類型:滿擺幅 轉(zhuǎn)換速率:1.8 V/µs 增益帶寬積:6.5MHz -3db帶寬:4.5MHz 電流 - 輸入偏壓:5nA 電壓 - 輸入偏移:100µV 電流 - 電源:65µA 電流 - 輸出 / 通道:35mA 電壓 - 電源，單路/雙路(±):1.8 V ~ 5.25 V，±0.9 V ~ 2.625 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:10-TFSOP，10-MSOP（0.118"，3.00mm 寬） 供應(yīng)商設(shè)備封裝:10-MSOP 包裝:管件 |
| AD8209WHRMZ | 功能描述:Differential Amplifier 1 Circuit 8-MSOP 制造商:analog devices inc. 系列:汽車級(jí)，AEC-Q100 包裝:管件 零件狀態(tài):有效 放大器類型:差分 電路數(shù):1 輸出類型:- 壓擺率:1 V/μs 增益帶寬積:80kHz -3db 帶寬:- 電流 - 輸入偏置:50nA 電壓 - 輸入失調(diào):2mV 電流 - 電源:1.6mA 電流 - 輸出/通道:- 電壓 - 電源，單/雙（±）:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:50 |
| AD8209WHRMZ-RL | 功能描述:Differential Amplifier 1 Circuit 8-MSOP 制造商:analog devices inc. 系列:汽車級(jí)，AEC-Q100 包裝:帶卷（TR） 零件狀態(tài):在售 放大器類型:差分 電路數(shù):1 輸出類型:- 壓擺率:1 V/μs 增益帶寬積:80kHz -3db 帶寬:- 電流 - 輸入偏置:50nA 電壓 - 輸入失調(diào):2mV 電流 - 電源:1.6mA 電流 - 輸出/通道:- 電壓 - 電源，單/雙（±）:4.5 V ~ 5.5 V 工作溫度:-40°C ~ 150°C 安裝類型:表面貼裝 封裝/外殼:8-TSSOP，8-MSOP（0.118"，3.00mm 寬） 供應(yīng)商器件封裝:8-MSOP 標(biāo)準(zhǔn)包裝:3,000 |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。