- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄2137 > AD8275BRMZ-RL (Analog Devices Inc)IC AMP DIFF R-R LDRIFT 8MSOP PDF資料下載
參數(shù)資料
| 型號(hào)： | AD8275BRMZ-RL |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 3/16頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP DIFF R-R LDRIFT 8MSOP |
| 產(chǎn)品培訓(xùn)模塊： | Power Line Monitoring |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 放大器類型： | 差分 |
| 電路數(shù)： | 1 |
| 輸出類型： | 滿擺幅 |
| 轉(zhuǎn)換速率： | 25 V/µs |
| -3db帶寬： | 15MHz |
| 電壓 - 輸入偏移： | 150µV |
| 電流 - 電源： | 1.9mA |
| 電流 - 輸出 / 通道： | 30mA |
| 電壓 - 電源，單路/雙路(±)： | 3.3 V ~ 15 V |
| 工作溫度： | -40°C ~ 85°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： | 帶卷 (TR) |
第1頁(yè)第2頁(yè)當(dāng)前第3頁(yè)第4頁(yè)第5頁(yè)第6頁(yè)第7頁(yè)第8頁(yè)第9頁(yè)第10頁(yè)第11頁(yè)第12頁(yè)第13頁(yè)第14頁(yè)第15頁(yè)第16頁(yè)
AD8275
Rev. A | Page 11 of 16
THEORY OF OPERATION
The AD8275 level translates ±10 V signals at its inputs to 4 V
at its output. It does this by attenuating the input signal by 5.
A subtractor network performs the attenuation, the level shifting,
and the differential-to-single-ended conversion. One benefit of
the subtractor topology is that it can accept input signals
beyond its supply voltage. The subtractor is composed of tightly
matched resistors. By integrating the resistors and trimming the
resistor ratios, the AD8275 achieves 80 dB CMRR and 0.024%
gain error.
07546-
030
INPUT
ESD
REF2
+VS
–VS
+VS
–VS
+VS
–VS
OUT
SENSE
50k
7k
7k
50k
20k
20k
10k
2.5V
–IN
+IN
INPUT
ESD
+VS
–VS
REF1
+VS
–VS
Figure 31. AD8275 Simplified Schematic
To achieve a wider input voltage range, the AD8275 uses an
internal 2.5 V voltage bias tied to –VS and two 7 kΩ resistors, as
shown in Figure 31. The resistors help to set the common mode
of the internal amplifier. The benefit of this circuit is that it
extends the input range without causing crossover distortion
typical of amplifiers that have rail-to-rail complementary
transistor inputs. The input range of the internal op amp is
+VS 0.9 V to VS + 1.35 V.
–10
–8
–6
600
400
200
0
–200
–400
–600
–4
–2
0
2
4
6
8
10
COMMON-MODE VOLTAGE (V)
O
F
SET
(
V)
07546-
132
Figure 32. AD8275 Does Not Have Crossover Distortion Typical of Rail-to-Rail
Input Amplifiers
The AD8275 employs a balanced, high gain, linear output stage
that adaptively generates current as required, eliminating the
dynamic errors found in other amplifiers. This is useful when
driving SAR ADCs, which can deliver kickback current into the
output of the amplifier. The result is a design that achieves low
distortion, consistent bandwidth, and high slew rate.
BASIC CONNECTION
The basic configurations for the AD8275 are shown in
Figure 33 and Figure 34. In Figure 33, REF1 and REF2 are
tied together. A voltage, VREF, applied to the tied REF1 and
REF2 pins, sets the output voltage level to VREF. For example,
the output remains at 2 V.
07546-
031
AD8275
7
4
5
6
8
1
2
50k
0.1F
50k
20k
20k
10k
3
VINN
+IN
–IN
VINP
REF2
VREF
VOUT
REF1
–VS
+VS
+5V
OUT
SENSE
VOUT =
+ VREF
(VINP) – (VINN)
5
Figure 33. Basic Configuration 1: Shared Reference
In contrast, Figure 34 shows REF1 tied to ground and REF2
tied to VREF. In this example, the two 20 kΩ resistors serve as a
resistor divider, and VREF is divided by 2. For example, if both
inputs of the AD8275 are grounded and VREF = 5 V, the output
is 2.5 V.
07546-
032
AD8275
7
4
5
6
8
1
2
50k
0.1F
50k
20k
20k
10k
3
VINN
+IN
–IN
VINP
REF2
VREF
VOUT
REF1
–VS
+VS
+5V
OUT
SENSE
VOUT =
+
(VINP) – (VINN)
5
VREF + 0V
2
Figure 34. Basic Configuration 2: Split Reference
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| AD8276BRMZ | IC AMP DIFF R-R 550KHZ LP 8MSOP |
| AD8278BRMZ | IC OPAMP DIFFERENTIAL 8MSOP |
| AD827SQ | IC OPAMP GP 50MHZ DUAL LP 8CDIP |
| AD8290ACPZ-R2 | IC AMP CS CMOS LP 16LFCSP |
| AD8293G80BRJZ-R2 | IC AMP INST R-R LDRIFT SOT23-8 |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8276 | 制造商:AD 制造商全稱:Analog Devices 功能描述:Low Power, Wide Supply Range, Low Cost Unity-Gain Difference Amplifiers |
| AD8276ARMZ | 功能描述:IC AMP DIFF R-R 550KHZ LP 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類型:通用 電路數(shù):4 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.028 V/µs 增益帶寬積:105kHz -3db帶寬:- 電流 - 輸入偏壓:3nA 電壓 - 輸入偏移:100µV 電流 - 電源:3.3µA 電流 - 輸出 / 通道:12mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 12 V，±1.35 V ~ 6 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:14-TSSOP（0.173"，4.40mm 寬） 供應(yīng)商設(shè)備封裝:14-TSSOP 包裝:剪切帶 (CT) 其它名稱:OP481GRUZ-REELCT |
| AD8276ARMZ | 制造商:Analog Devices 功能描述:IC DIFF AMP 550KHZ 1.1V/ MSOP-8 |
| AD8276ARMZ-R7 | 功能描述:IC AMP DIFF R-R 550KHZ LP 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:100 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:- 轉(zhuǎn)換速率:0.2 V/µs 增益帶寬積:- -3db帶寬:- 電流 - 輸入偏壓:100pA 電壓 - 輸入偏移:30µV 電流 - 電源:380µA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):±2 V ~ 18 V 工作溫度:0°C ~ 70°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:管件 |
| AD8276ARMZ-RL | 功能描述:IC AMP DIFF R-R 550KHZ LP 8MSOP RoHS:是 類別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 放大器類型:通用 電路數(shù):1 輸出類型:滿擺幅 轉(zhuǎn)換速率:0.11 V/µs 增益帶寬積:350kHz -3db帶寬:- 電流 - 輸入偏壓:4nA 電壓 - 輸入偏移:20µV 電流 - 電源:260µA 電流 - 輸出 / 通道:20mA 電壓 - 電源，單路/雙路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:8-SOIC（0.154"，3.90mm 寬） 供應(yīng)商設(shè)備封裝:8-SO 包裝:帶卷 (TR) |
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。