OPA314_15 Datasheet, PDF (12/45 Pages) Texas Instruments – OPAx314 3-MHz, Low-Power, Low-Noise, RRIO, 1.8-V CMOS Operational Amplifier

OPA314, OPA2314, OPA4314
SBOS563G – MAY 2011 – REVISED JUNE 2015
www.ti.com
At T_A = 25°C, R_L = 10 kΩ connected to V_S/2, V_CM = V_S/2, and V_OUT = V_S/2, unless otherwise noted.
20
V_S = ±2.75 V
f = 1 kHz
18
1000
900
800
700
16
600
500
14
400
300
12
200
100
10
0 0.5 1 1.5 2 2.5 3 3.5 4 4.5 5 5.5
Common-Mode Input Voltage (V)
0
-50 -25 0
25 50 75
Temperature (°C)
I_B
I_OS
100 125 150
Figure 13. Voltage Noise vs Common-Mode Voltage
100k
10k
V_S = ±0.9 V
1k
V_S = ±2.75 V
1
1
10 100 1k 10k 100k 1M 10M
Frequency (Hz)
Figure 14. Input Bias and Offset Current vs Temperature
6
V_IN = 5.5 V
5
V_IN = 3.3 V
V_IN = 1.8 V
4
3
2
1 _{RL = 10 kW}
C_L = 10 pF
0
10k
100k
1M
10M
Frequency (Hz)
Figure 15. Open-Loop Output Impedance vs Frequency
3
2
1
0
-1
-2
-3
0
+125°C
+25°C
-40°C
V_S = ±2.75 V
5 10 15 20 25 30 35 40
Output Current (mA)
Figure 16. Maximum Output Voltage vs Frequency and
Supply Voltage
40
V_S = 1.8 V
G = -1 V/V
G = +1 V/V
G = +10 V/V
20
0
-20
10k
100k
1M
10M
Frequency (Hz)
Figure 17. Output Voltage Swing vs Output Current (Over
Temperature)
Figure 18. Closed-Loop Gain vs Frequency
12
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