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参数资料
| 型号： | OP490G |
| 厂商： | Analog Devices, Inc. |
| 元件分类： | 运动控制电子 |
| 英文描述： | Low Voltage Micropower Quad Operational Amplifier |
| 中文描述： | 低电压，微功耗四运算放大器 |
| 文件页数： | 9/16页 |
| 文件大小： | 206K |
| 代理商： | OP490G |
REV. C
OP490
–9–
1
2
3
4
5
6
7
14
13
12
11
10
9
8
–18V
+18V
GND
C
B
D
A
Figure 2. Burn-In Circuit
+15V
–15V
1k
+15V
–15V
V2
100
10k
1/4
OP490A
1/4
OP490B
OP37A
V1
V
IN
1/4
OP490C
1/4
OP490D
20V p-p @ 10Hz
CHANNEL SEPARATION = 20 LOG
V1
V2/1000
Figure 3. Channel Separation Test Circuit
APPLICATIONS INFORMATION
Battery-Powered Applications
The OP490 can be operated on a minimum supply voltage of
1.6 V, or with dual supplies of
±
0.8 V, and draws only 60
m
A of
supply current. In many battery-powered circuits, the OP490
can be continuously operated for hundreds of hours before
requiring battery replacement, reducing equipment downtime,
and operating costs.
High performance portable equipment and instruments fre-
quently use lithium cells because of their long shelf-life, light
weight, and high energy density relative to older primary cells.
Most lithium cells have a nominal output voltage of 3 V and are
noted for a flat discharge characteristic. The low supply current
HOURS
4
3
00
1750
250
L
500
750
2
1
1000
1500
Figure 4. Lithium-Sulphur Dioxide Cell Discharge Charac-
teristic with OP490 and 100 k
W
Loads
requirement of the OP490, combined with the flat discharge
characteristic of the lithium cell, indicates that the OP490 can
be operated over the entire useful life of the cell. Figure 4 shows
the typical discharge characteristic of a 1 Ah lithium cell power-
ing an OP490 with each amplifier, in turn, driving full output
swing into a 100 k
W
load.
Single-Supply Output Voltage Range
In single-supply operation the OP490’s input and output ranges
include ground. This allows true “zero-in, zero-out” operation.
The output stage provides an active pull-down to around 0.8 V
above ground. Below this level, a load resistance of up to 1 M
W
to ground is required to pull the output down to zero.
In the region from ground to 0.8 V, the OP490 has voltage gain
equal to the data sheet specification. Output current source
capability is maintained over the entire voltage range including
ground.
Input Voltage Protection
The OP490 uses a PNP input stage with protection resistors in
series with the inverting and noninverting inputs. The high
breakdown of the PNP transistors coupled with the protection
resistors provides a large amount of input protection, allowing
the inputs to be taken 20 V beyond either supply without dam-
aging the amplifier.
相关PDF资料 |
PDF描述 |
|---|---|
| OP490E | Low Voltage Micropower Quad Operational Amplifier |
| OP490F | Low Voltage Micropower Quad Operational Amplifier |
| op490 | Low Voltage Micropower Quad Operational Amplifier(低电压微功率四运放) |
| op492 | Quad OP AMP(四运算放大器) |
| op292 | Dual OP AMP(双运算放大器) |
相关代理商/技术参数 |
参数描述 |
|---|---|
| OP490GBC | 制造商:Analog Devices 功能描述: |
| OP490GP | 制造商:Rochester Electronics LLC 功能描述:MICROPOWER QUAD OP AMP IC - Bulk 制造商:Analog Devices 功能描述:OP AMP QUAD MICROPOWER DIP14 490 |
| OP490GPZ | 功能描述:IC OPAMP GP 20KHZ QUAD 14DIP RoHS:是 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:4 输出类型:- 转换速率:0.6 V/µs 增益带宽积:1MHz -3db带宽:- 电流 - 输入偏压:45nA 电压 - 输入偏移:2000µV 电流 - 电源:1.4mA 电流 - 输出 / 通道:40mA 电压 - 电源，单路/双路(±):3 V ~ 32 V，±1.5 V ~ 16 V 工作温度:0°C ~ 70°C 安装类型:表面贴装 封装/外壳:14-TSSOP（0.173"，4.40mm 宽） 供应商设备封装:14-TSSOP 包装:带卷 (TR) 其它名称:LM324ADTBR2G-NDLM324ADTBR2GOSTR |
| OP490GS | 制造商:Rochester Electronics LLC 功能描述:- Bulk 制造商:Analog Devices 功能描述:IC OP AMP QUAD MICROPOWER SOIC16 |
| OP490GS-REEL | 功能描述:IC OPAMP GP 20KHZ QUAD 16SOIC RoHS:否 类别:集成电路 (IC) >> Linear - Amplifiers - Instrumentation 系列:- 标准包装:2,500 系列:- 放大器类型:通用 电路数:1 输出类型:满摆幅 转换速率:0.11 V/µs 增益带宽积:350kHz -3db带宽:- 电流 - 输入偏压:4nA 电压 - 输入偏移:20µV 电流 - 电源:260µA 电流 - 输出 / 通道:20mA 电压 - 电源，单路/双路(±):2.7 V ~ 36 V，±1.35 V ~ 18 V 工作温度:-40°C ~ 85°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:带卷 (TR) |
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