参数资料
| 型号： | OP490GSZ-REEL |
| 厂商： | Analog Devices Inc |
| 文件页数： | 16/16页 |
| 文件大小： | 0K |
| 描述： | IC OPAMP GP 20KHZ QUAD 16SOIC |
| 标准包装： | 1 |
| 放大器类型： | 通用 |
| 电路数： | 4 |
| 转换速率： | 0.012 V/µs |
| 增益带宽积： | 20kHz |
| 电流 - 输入偏压： | 4.2nA |
| 电压 - 输入偏移： | 600µV |
| 电流 - 电源： | 60µA |
| 电压 - 电源，单路/双路(±)： | 1.6 V ~ 36 V，±0.8 V ~ 18 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 16-SOIC（0.295"，7.50mm 宽） |
| 供应商设备封装： | 16-SOIC W |
| 包装： | 剪切带 (CT) |
| 产品目录页面： | 772 (CN2011-ZH PDF) |
| 其它名称： | OP490GSZ-REELCT |
OP490
Rev. E | Page 9 of 16
APPLICATIONS INFORMATION
00
30
8-
01
9
GND
+18V
12
3
4
5
6
7
14
13
12
11
10
9
8
–18V
AB
DC
Figure 19. Burn-In Circuit
VIN
+15V
–15V
00
30
8-
0
20
1/4
OP490
A
+
–
OP37
A
+
–
+15V
V2
V1
20V p-p @ 10Hz
1k
100
10k
1/4
OP490
B
+
–
1/4
OP490
C
+
–
1/4
OP490
D
+
–
–15V
CHANNEL SEPARATION = 20 log
V1
V2/1000
Figure 20. Channel Separation Test Circuit
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 drawing only 60 μA of
supply current. In many battery-powered circuits, the OP490
can be continuously operated for hundreds of hours before
requiring battery replacement, thereby reducing equipment
downtime and operating costs.
High performance portable equipment and instruments
frequently 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
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 21
shows the typical discharge characteristic of a 1 Ah lithium cell
powering an OP490 with each amplifier, in turn, driving full
output swing into a 100 kΩ load.
00
308
-02
1
4
3
0
1
2
L
IT
HI
UM
-S
UL
P
HUR
DI
O
X
ID
E
CE
L
V
O
L
T
A
G
E
(
V
)
HOURS
0
250
500
1000
1250
1500
750
Figure 21. Lithium-Sulphur Dioxide Cell Discharge Characteristic with
OP490 and 100 kΩ Loads
SINGLE-SUPPLY OUTPUT VOLTAGE RANGE
In single-supply operation the input and output ranges of the
OP490 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 MΩ 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.
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相关代理商/技术参数 |
参数描述 |
|---|---|
| OP490RPFB | 制造商:MAXWELL 制造商全称:Maxwell Technologies 功能描述:Low Voltage Micropower Quad Operational Amplifier |
| OP490RPFE | 制造商:MAXWELL 制造商全称:Maxwell Technologies 功能描述:Low Voltage Micropower Quad Operational Amplifier |
| OP490RPFI | 制造商:MAXWELL 制造商全称:Maxwell Technologies 功能描述:Low Voltage Micropower Quad Operational Amplifier |
| OP490RPFS | 制造商:MAXWELL 制造商全称:Maxwell Technologies 功能描述:Low Voltage Micropower Quad Operational Amplifier |
| OP491 | 制造商:AD 制造商全称:Analog Devices 功能描述:Micropower Single-Supply Rail-to-Rail Input/Output Op Amps |
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