OPA314 Datasheet, PDF (10/35 Pages) Texas Instruments – 3-MHz, Low-Power, Low-Noise, RRI/O, 1.8-V CMOS OPERATIONAL AMPLIFIER

OPA314
OPA2314
OPA4314
SBOS563D – MAY 2011 – REVISED MARCH 2012
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TYPICAL CHARACTERISTICS (continued)
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.
VOLTAGE NOISE
vs COMMON-MODE VOLTAGE
20
V_S = ±2.75 V
f = 1 kHz
18
INPUT BIAS AND OFFSET CURRENT
vs TEMPERATURE
1000
900
800
700
16
I_B
600
500
14
400
300
12
200
100
I_OS
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)
100 125 150
Figure 13.
Figure 14.
OPEN-LOOP OUTPUT IMPEDANCE
vs FREQUENCY
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 15.
MAXIMUM OUTPUT VOLTAGE
vs FREQUENCY AND SUPPLY VOLTAGE
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 16.
OUTPUT VOLTAGE SWING
vs OUTPUT CURRENT (Over Temperature)
3
2
1
+25°C
0
+125°C
-40°C
-1
-2
-3
0
V_S = ±2.75 V
5 10 15 20 25 30 35 40
Output Current (mA)
Figure 17.
CLOSED-LOOP GAIN vs FREQUENCY
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 18.
10
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