参数资料
| 型号： | AD8475BRMZ-R7 |
| 厂商： | Analog Devices Inc |
| 文件页数： | 11/24页 |
| 文件大小： | 0K |
| 描述： | IC FUNNEL AMP DIFF PREC 10MSOP |
| 标准包装： | 1,000 |
| 放大器类型： | 差分 |
| 电路数： | 1 |
| 输出类型： | 差分，满摆幅 |
| 转换速率： | 50 V/µs |
| -3db带宽： | 150MHz |
| 电流 - 电源： | 3mA |
| 电流 - 输出 / 通道： | 110mA |
| 电压 - 电源，单路/双路(±)： | 3 V ~ 10 V，±1.5 V ~ 5 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 10-TFSOP，10-MSOP（0.118"，3.00mm 宽） |
| 供应商设备封装： | 10-MSOP |
| 包装： | 带卷 (TR) |
Data Sheet
AD8475
Rev. C | Page 19 of 24
APPLICATIONS INFORMATION
TYPICAL CONFIGURATION
The AD8475 is designed to facilitate single-ended-to-differential
conversion, common-mode level shifting, and precision attenuation
of large signals so that they are compatible with low voltage ADCs.
Figure 53 shows a typical connection diagram of the AD8475
in a gain of 0.4. To use the AD8475 in a gain of 0.8, drive the
±IN 0.8x inputs with a low impedance source.
SINGLE-ENDED TO DIFFERENTIAL CONVERSION
Many industrial systems use single-ended voltages in the signal
path; however, the signals are frequently processed by high
performance differential input ADCs for higher precision. The
AD8475 performs the critical function of precisely converting
single-ended signals to the differential inputs of precision
ADCs, and it does so with no need for external components.
To convert a single-ended signal to a differential signal, connect
one input to the signal source and the other input to ground (see
Figure 55). Note that either input can be driven by the source
with the only effect being that the outputs have reversed polarity.
The AD8475 also accepts truly differential input signals in
precision systems with differential signal paths.
SETTING THE OUTPUT COMMON-MODE VOLTAGE
The VOCM pin of the AD8475 is internally biased with a
precision voltage divider comprising two 200 k resistors between
the supplies. This divider level shifts the output to midsupply.
Relying on the internal bias results in an output common-mode
voltage that is within 0.01% of the expected value.
In cases where control of the output common-mode level is
desired, an external source with output resistance less than
100 can be used to drive the VOCM pin. If an external
voltage divider consisting of equal resistor values is used to set
VOCM to midsupply, higher values can be used because the
external resistors are placed in parallel with the internal
resistors. The output common-mode gain error listed in the
Specifications section assumes that the VOCM input is driven by a
low impedance voltage source.
Because of the internal divider, the VOCM pin sources and sinks
current, depending on the externally applied voltage and its
associated source resistance.
It is also possible to connect the VOCM input to the voltage
reference of an ADC via a resistor divider as shown in Figure 55.
Connecting the VOCM input in this manner reduces power
supply noise and optimizes the output common mode voltage
of the AD8475 to utilize the entire differential input voltage
range of the ADC. If AD8475 is used with a single supply that
is the same voltage as the voltage reference, two 10 k resistors
connected to the VOCM pin is sufficient to override the inter-
nal resistors. Otherwise, a voltage follower should be used to
drive VOCM.
09432-
200
VOUT = (V+OUT – V–OUT)
0.1F
REF
+VS
+
0.1F
10F
LOW
IMPEDANCE
INPUT SOURCE
–VS
+
0.1F
10F
1k
1.25k
AD8475
–IN 0.8x
–IN 0.4x
+VS
VOCM
+OUT
+IN 0.8x
+IN 0.4x
–VS
NC
–OUT
1.25k
Figure 52. Typical Configuration—10-Lead MSOP
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8475BRMZ-RL | 功能描述:IC FUNNEL AMP DIFF PREC 10MSOP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:100 系列:- 放大器类型:通用 电路数:1 输出类型:- 转换速率:0.2 V/µs 增益带宽积:- -3db带宽:- 电流 - 输入偏压:100pA 电压 - 输入偏移:30µV 电流 - 电源:380µA 电流 - 输出 / 通道:- 电压 - 电源，单路/双路(±):±2 V ~ 18 V 工作温度:0°C ~ 70°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:管件 |
| AD8475-EVALZ | 功能描述:BOARD EVAL FOR AD8475 RoHS:是 类别:编程器，开发系统 >> 评估板 - 运算放大器 系列:- 产品培训模块:Lead (SnPb) Finish for COTS Obsolescence Mitigation Program 标准包装:1 系列:- |
| AD8476 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Power, Unity Gain, Fully |
| AD8476ACPZ-R7 | 功能描述:IC AMP DIFF ADC DVR 16LFCSP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1 系列:- 放大器类型:通用 电路数:4 输出类型:满摆幅 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:2pA 电压 - 输入偏移:1000µV 电流 - 电源:85µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):1.8 V ~ 6 V 工作温度:-40°C ~ 125°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-SOICN 包装:剪切带 (CT) 产品目录页面:680 (CN2011-ZH PDF) 其它名称:MCP6L04T-E/SLCT |
| AD8476ACPZ-R7_PROMO | 制造商:Analog Devices 功能描述:IC OP-AMP DIFF 6MHZ 10V/US |
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