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| 型號(hào)： | AD8273ARZ-R7 |
| 廠商： | Analog Devices Inc |
| 文件頁(yè)數(shù)： | 4/16頁(yè) |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO 2CH DIFF 14SOIC |
| 標(biāo)準(zhǔn)包裝： | 1 |
| 放大器類(lèi)型： | 音頻 |
| 電路數(shù)： | 2 |
| 轉(zhuǎn)換速率： | 20 V/µs |
| 增益帶寬積： | 20MHz |
| 電壓 - 輸入偏移： | 100µV |
| 電流 - 電源： | 2.5mA |
| 電流 - 輸出 / 通道： | 100mA |
| 電壓 - 電源，單路/雙路(±)： | 5 V ~ 36 V，±2.5 V ~ 18 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類(lèi)型： | 表面貼裝 |
| 封裝/外殼： | 14-SOIC（0.154"，3.90mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 14-SOIC |
| 包裝： | 標(biāo)準(zhǔn)包裝 |
| 其它名稱(chēng)： | AD8273ARZ-R7DKR |
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AD8273
Rev. B | Page 12 of 16
THEORY OF OPERATION
The AD8273 has two channels, each consisting of a high
precision, low distortion op amp and four trimmed resistors.
Although such a circuit can be built discretely, placing the
resistors on the chip offers advantages to board designers that
include better dc specifications, better ac specification, and
lower production costs.
The resistors on the AD8273 are laser trimmed and tightly
matched. Specifications that depend on the resistor matching,
such as gain drift, common-mode rejection, and gain accuracy,
are better than can be achieved with standard discrete resistors.
The positive and negative input terminals of the AD8273 op amp
are not pinned out intentionally. Keeping these nodes internal
means their capacitance is considerably lower than it would be
in discrete designs. Lower capacitance at these nodes means
better loop stability and improved common-mode rejection vs.
frequency.
The internal resistors of the AD8273 lower production costs.
One part rather than several is placed on the board, which
improves both board build time and reliability.
CONFIGURATIONS
The AD8273 can be configured in several different ways; see
Figure 39 to Figure 46. Because these configurations rely on the
internal, matched resistors, these configurations have excellent
gain accuracy and gain drift.
POWER SUPPLIES
Use a stable dc voltage to power the AD8273. Noise on the
supply pins can adversely affect performance. Place a bypass
capacitor of 0.1 μF between each supply pin and ground, as
close to each pin as possible. Also, use a tantalum capacitor of
10 μF between each supply and ground. It can be farther away
from the AD8273 and typically can be shared by other precision
integrated circuits.
The AD8273 is specified at ±15 V, but it can be used with
unbalanced supplies as well, for example, VS = 0 V, +VS = 20 V.
The difference between the two supplies must be kept below 36 V.
06
98
1-
01
2
12k
2
3
12
14
13
6k
12k
6k
–IN1
OUT1
+IN1
12k
6
5
10
8
9
6k
12k
6k
–IN2
OUT2
+IN2
VOUT = (VIN+ VIN)
Figure 39. Difference Amplifier, G =
0
69
81
-01
6
6k
3
2
14
13
12k
6k
12k
–IN1
OUT1
+IN1
6k
6
5
10
8
9
12k
6k
12k
–IN2
OUT2
+IN2
12
VOUT = 2 (VIN+ VIN)
Figure 40. Difference Amplifier, G = 2
06
98
1-
01
3
12k
2
3
12
14
13
6k
12k
6k
IN1
OUT1
5
8
12k
6k
12k
610
9
6k
IN2
OUT2
VOUT = VIN
Figure 41. Inverting Amplifier, G =
06
98
1-
0
17
6k
2
3
12
14
13
12k
6k
12k
IN1
OUT1
5
8
6k
12k
6k
6
10
9
12k
IN2
OUT2
VOUT = 2 VIN
Figure 42. Inverting Amplifier, G = 2
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| AD8273ARZ-RL | 功能描述:IC AMP AUDIO 2CH DIFF 14SOIC RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 標(biāo)準(zhǔn)包裝:50 系列:- 放大器類(lèi)型:通用 電路數(shù):2 輸出類(lèi)型:滿(mǎn)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(lèi)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 |
| AD8273-EVALZ | 功能描述:AD8273 2 - Dual Channels per IC Difference Amplifier Evaluation Board 制造商:analog devices inc. 系列:- 零件狀態(tài):有效 每 IC 通道數(shù):2 - 雙 放大器類(lèi)型:差異 輸出類(lèi)型:單端 壓擺率:20 V/μs -3db 帶寬:20MHz 電流 - 輸出/通道:100mA 工作溫度:-40°C ~ 85°C 電流 - 電源（主 IC）:2.5mA 電壓 - 電源，單/雙（±）:5 V ~ 36 V，±2.5 V ~ 18 V 板類(lèi)型:完全填充 所含物品:板 使用的 IC/零件:AD8273 標(biāo)準(zhǔn)包裝:1 |
| AD8274 | 制造商:AD 制造商全稱(chēng):Analog Devices 功能描述:Very Low Distortion, Precision Difference Amplifier |
| AD8274_11 | 制造商:AAVID 制造商全稱(chēng):AAVID 功能描述:Very Low Distortion, Precision Difference Amplifier |
| AD8274ARMZ | 功能描述:IC AMP DIFF 20MHZ LDIST 8MSOP RoHS:是 類(lèi)別:集成電路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 產(chǎn)品培訓(xùn)模塊:Differential Circuit Design Techniques for Communication Applications 標(biāo)準(zhǔn)包裝:1 系列:- 放大器類(lèi)型:RF/IF 差分 電路數(shù):1 輸出類(lèi)型:差分 轉(zhuǎn)換速率:9800 V/µs 增益帶寬積:- -3db帶寬:2.9GHz 電流 - 輸入偏壓:3µA 電壓 - 輸入偏移:- 電流 - 電源:40mA 電流 - 輸出 / 通道:- 電壓 - 電源，單路/雙路(±):3 V ~ 3.6 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:16-VQFN 裸露焊盤(pán)，CSP 供應(yīng)商設(shè)備封裝:16-LFCSP-VQ 包裝:剪切帶 (CT) 產(chǎn)品目錄頁(yè)面:551 (CN2011-ZH PDF) 其它名稱(chēng):ADL5561ACPZ-R7CT |
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