参数资料
| 型号： | AD8659ARZ |
| 厂商： | Analog Devices Inc |
| 文件页数： | 13/24页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP RRIO 18V CMOS 14SOIC |
| 标准包装： | 56 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 输出类型： | 满摆幅 |
| 转换速率： | 0.07 V/µs |
| 增益带宽积： | 200kHz |
| 电流 - 输入偏压： | 5pA |
| 电压 - 输入偏移： | 350µV |
| 电流 - 电源： | 18µA |
| 电流 - 输出 / 通道： | 12mA |
| 电压 - 电源，单路/双路(±)： | 2.7 V ~ 18 V，±1.35 V ~ 9 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-SO |
| 包装： | 管件 |
AD8657/AD8659
Data Sheet
Rev. B | Page 20 of 24
OUTPUT STAGE
The AD8657/AD8659 feature a complementary output stage
consisting of the M16 and M17 transistors. These transistors are
configured in Class AB topology and are biased by the voltage
source, VB2. This topology allows the output voltage to go
within millivolts of the supply rails, achieving a rail-to-rail output
swing. The output voltage is limited by the output impedance of the
transistors, which are low RON MOS devices. The output voltage
swing is a function of the load current and can be estimated using
the output voltage to the supply rail vs. load current diagrams (see
RAIL TO RAIL
The AD8657/AD8659 feature rail-to-rail input and output with
a supply voltage from 2.7 V to 18 V. Figure 69 shows the input
unity-gain buffer with a supply voltage of ±9 V and a resistive
allow the output to swing very close to both rails. Additionally,
they do not exhibit phase reversal.
TIME (200s/DIV)
V
OLTA
GE
(
5
V
/D
IV
)
VSY = ±9V
RL = 1M
08804-
057
INPUT
OUTPUT
Figure 69. Rail-to-Rail Input and Output
RESISTIVE LOAD
The feedback resistor alters the load resistance that an amplifier
sees. It is, therefore, important to be aware of the value of feed-
amplifiers are capable of driving resistive loads down to 100 k.
The following two examples, inverting and noninverting
configurations, show how the feedback resistor changes the
actual load resistance seen at the output of the amplifier.
Inverting Op Amp Configuration
ration with a resistive load, RL, at the output. The actual load
seen by the amplifier is the parallel combination of the feedback
resistor, R2, and load, RL. For example, the combination of a feed-
back resistor of 1 k and a load of 1 M results in an equivalent
load resistance of 999 at the output. Because the AD8657/
AD8659 are incapable of driving such a heavy load, performance
degrades greatly.
To avoid loading the output, use a larger feedback resistor, but
consider the resistor thermal noise effect on the overall circuit.
AD8657/
AD8659
R1
R2
RL
–VSY
RL, EFF = RL || R2
+VSY
VIN
VOUT
08804-
058
Figure 70. Inverting Op Amp Configuration
Noninverting Op Amp Configuration
ration with a resistive load, RL, at the output. The actual load seen
by the amplifier is the parallel combination of R1 + R2 and RL.
R1
R2
RL
–VSY
RL, EFF = RL || (R1 + R2)
+VSY
VIN
VOUT
08804-
059
AD8657/
AD8659
Figure 71. Noninverting Op Amp Configuration
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相关代理商/技术参数 |
参数描述 |
|---|---|
| AD8659ARZ_PROMO | 制造商:Analog Devices 功能描述:OP AMP QUAD 18V RRIO 230KH |
| AD8659ARZ-R7 | 功能描述:IC OPAMP RRIO 18V CMOS 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 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) |
| AD8659ARZ-RL | 功能描述:IC OPAMP RRIO 18V CMOS 14SOIC RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:1,000 系列:- 放大器类型:电压反馈 电路数:4 输出类型:满摆幅 转换速率:33 V/µs 增益带宽积:20MHz -3db带宽:30MHz 电流 - 输入偏压:2nA 电压 - 输入偏移:3000µV 电流 - 电源:2.5mA 电流 - 输出 / 通道:30mA 电压 - 电源，单路/双路(±):4.5 V ~ 16.5 V，±2.25 V ~ 8.25 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) |
| AD8661 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Noise, Precision 16 V CMOS, Rail-to-Rail Operational Amplifiers |
| AD8661_06 | 制造商:AD 制造商全称:Analog Devices 功能描述:Low Noise, Precision 16 V CMOS, Rail-to-Rail Operational Amplifiers |
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