OP490GS-REEL Analog Devices Inc, OP490GS-REEL Datasheet - Page 9

• Manufacturer Part Number: OP490GS-REEL
• Description: IC OPAMP GP 20KHZ QUAD 16SOIC
• Manufacturer: Analog Devices Inc

Specifications of OP490GS-REEL

• Rohs Status: RoHS non-compliant
• Amplifier Type: General Purpose
• Number Of Circuits: 4
• Slew Rate: 0.012 V/µs
• Gain Bandwidth Product: 20kHz
• Current - Input Bias: 4.2nA
• Voltage - Input Offset: 600µV
• Current - Supply: 60µA
• Voltage - Supply, Single/dual (±): 1.6 V ~ 36 V, ±0.8 V ~ 18 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 16-SOIC (0.300", 7.5mm Width)
• Output Type: -
• Current - Output / Channel: -
• -3db Bandwidth: -
• Other names: OP490GS-REEL; OP490GS-REELTR

APPLICATIONS INFORMATION
V
IN
–18V
+18V
GND
1kΩ
Figure 20. Channel Separation Test Circuit
+
OP490
–
+
OP490
–
+
OP490
–
+
OP490
–
14
1
1/4
1/4
1/4
1/4
A
+15V
–15V
B
C
D
Figure 19. Burn-In Circuit
D
A
13
2
100Ω
12
3
CHANNEL SEPARATION = 20 log
11
4
10
5
V1
+
–
OP37
20V p-p @ 10Hz
+15V
–15V
A
C
B
9
6
10kΩ
8
7
V2/1000
V1
V2
Rev. E | Page 9 of 16
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.
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.
Figure 21. Lithium-Sulphur Dioxide Cell Discharge Characteristic with
4
3
2
1
0
0
250
OP490 and 100 kΩ Loads
500
HOURS
750
1000
1250
OP490
1500