OP07C Datasheet, PDF (9/21 Pages) STMicroelectronics – VERY LOW OFFSET SINGLE BIPOLAR OPERATIONAL AMPLIFIERS

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OP07C, OP07D
SLOS099G – OCTOBER 1983 – REVISED NOVEMBER 2014
Typical Application (continued)
10.2.1 Design Requirements
• Output range of 2 V to 11 V
• Input range of 2 V to 11 V
10.2.2 Detailed Design Procedure
10.2.2.1 Output Voltage Swing
The output voltage of an operational amplifier is limited by its internal circuitry to some level below the supply
rails. For this amplifier, the output voltage swing is within ±12 V, which accommodates the input and output
voltage requirements.
10.2.2.2 Supply and Input Voltage
For correct operation of the amplifier, neither input must be higher than the recommended positive supply rail
voltage or lower than the recommended negative supply rail voltage. The chosen amplifier must be able to
operate at the supply voltage that accommodates the inputs. Because the input for this application goes up to
11 V, the supply voltage must be 12 V. Using a negative voltage on the lower rail, rather than ground, allows the
amplifier to maintain linearity for inputs below 2 V.
10.2.3 Application Curves for Output Characteristics
12
10
8
6
4
2
0
0
2
4
6
8
10
12
VIN (V)
C001
Figure 4. Output Voltage vs Input Voltage
3.0
0.4
0.3
0.2
0.1
0.0
±0.1
±0.2
±0.3
0
2
4
6
8
10
12
VIN (V)
C002
Figure 5. Current Drawn by the Input of the Voltage
Follower (I_IO) vs the Input Voltage
2.5
2.0
1.5
1.0
0.5
0.0
0
2
4
6
8
10
12
VIN (V)
C003
Figure 6. Current Drawn from Supply (I_CC) vs the Input Voltage
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