OPA2846_14 Datasheet, PDF (8/30 Pages) Texas Instruments – Dual, Wideband, Low-Noise, Voltage-Feedback Operational Amplifier

OPA2846
SBOS274C −JUNE 2003 − REVISED AUGUST 2008
TYPICAL CHARACTERISTICS: V_S = ±5V (continued)
TA = 25°C, G = +10, RF = 453Ω, RG = 50Ω, and RL = 100Ω, unless otherwise noted.
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COMMON−MODE REJECTION RATIO AND
POWER−SUPPLY REJECTION RATIO vs FREQUENCY
120
CMRR
110
100
+PSRR
90
80
70
−PSRR
60
50
40
30
20
10²
10³
10⁴
10⁵
10⁶
10⁷
10⁸
Frequency (Hz)
120
100
80
60
40
20
0
−20
10²
OPEN−LOOP GAIN AND PHASE
∠A_OL
20log (A_OL)
10³ 10⁴ 10⁵ 10⁶ 10⁷ 10⁸
Frequency (Hz)
0
−30
−60
−90
−120
−150
−180
−210
10⁹
OUTPUT VOLTAGE AND CURRENT LIMITATIONS
4
3
R_L = 100Ω
2
1
R_L = 50Ω
0
R_L = 25Ω
−1
−2
−3
−4
−150
−100
−50
0
50
I_O (mA)
100
150
CLOSED−LOOP OUTPUT IMPEDANCE vs FREQUENCY
10
Z_O
1/2
1
O PA 2846
453Ω
0.1
50Ω
0.01
0.001
10²
10³
10⁴
10⁵
10⁶
10⁷
10⁸
Frequency (Hz)
NONINVERTING OVERDRIVE RECOVERY
10
1.0
8
Input
G = +10V/V _0.8
R_L = 100Ω
6
0.6
4
0.4
2
Output
0.2
0
0
−2
−0.2
−4
−0.4
−6
−0.6
−8 _{See Figure 1}
−0.8
−10
−1.0
0 50 100 150 200 250 300 350 400 450 500
Time (50ns/div)
INVERTING OVERDRIVE RECOVERY
10
0.5
8
Input
G = −20V/V _0.4
R_L = 100Ω
6
0.3
4
0.2
2
0.1
0
0
−2
−0.1
Output
−4
−0.2
−6
−0.3
−8 _{See Figure 2}
−0.4
−10
−0.5
0 50 100 150 200 250 300 350 400 450 500
Time (50ns/div)
8