参数资料
| 型号： | AD8273ARZ-RL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 4/16页 |
| 文件大小： | 0K |
| 描述： | IC AMP AUDIO 2CH DIFF 14SOIC |
| 标准包装： | 2,500 |
| 放大器类型： | 音频 |
| 电路数： | 2 |
| 转换速率： | 20 V/µs |
| 增益带宽积： | 20MHz |
| 电压 - 输入偏移： | 100µV |
| 电流 - 电源： | 2.5mA |
| 电流 - 输出 / 通道： | 100mA |
| 电压 - 电源，单路/双路(±)： | 5 V ~ 36 V，±2.5 V ~ 18 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) |
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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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8273-EVALZ | 功能描述:AD8273 2 - Dual Channels per IC Difference Amplifier Evaluation Board 制造商:analog devices inc. 系列:- 零件状态:有效 每 IC 通道数:2 - 双 放大器类型:差异 输出类型:单端 压摆率:20 V/μs -3db 带宽:20MHz 电流 - 输出/通道:100mA 工作温度:-40°C ~ 85°C 电流 - 电源（主 IC）:2.5mA 电压 - 电源，单/双（±）:5 V ~ 36 V，±2.5 V ~ 18 V 板类型:完全填充 所含物品:板 使用的 IC/零件:AD8273 标准包装:1 |
| AD8274 | 制造商:AD 制造商全称:Analog Devices 功能描述:Very Low Distortion, Precision Difference Amplifier |
| AD8274_11 | 制造商:AAVID 制造商全称:AAVID 功能描述:Very Low Distortion, Precision Difference Amplifier |
| AD8274ARMZ | 功能描述:IC AMP DIFF 20MHZ LDIST 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
| AD8274ARMZ-R7 | 功能描述:IC AMP DIFF 20MHZ LDIST 8MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:iPolar® 产品培训模块:Differential Circuit Design Techniques for Communication Applications 标准包装:1 系列:- 放大器类型:RF/IF 差分 电路数:1 输出类型:差分 转换速率:9800 V/µs 增益带宽积:- -3db带宽:2.9GHz 电流 - 输入偏压:3µA 电压 - 输入偏移:- 电流 - 电源:40mA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):3 V ~ 3.6 V 工作温度:-40°C ~ 85°C 安装类型:表面贴装 封装/外壳:16-VQFN 裸露焊盘，CSP 供应商设备封装:16-LFCSP-VQ 包装:剪切带 (CT) 产品目录页面:551 (CN2011-ZH PDF) 其它名称:ADL5561ACPZ-R7CT |
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