OPA1662 Datasheet, PDF (6/29 Pages) Texas Instruments – Low-Power, Low Noise and Distortion, Bipolar-Input AUDIO OPERATIONAL AMPLIFIERS

OPA1662
OPA1664
SBOS489 – DECEMBER 2011
TYPICAL CHARACTERISTICS
At T_A = +25°C, V_S = ±15 V, and R_L = 2 kΩ, unless otherwise noted.
INPUT VOLTAGE NOISE DENSITY AND
INPUT CURRENT NOISE DENSITY vs FREQUENCY
100
100
Voltage Noise
Current Noise
0.1Hz TO 10Hz NOISE
10
10
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1
1
0.1
1
0.1
10
100
1k
10k
100k
Frequency (Hz)
G001
Figure 1.
VOLTAGE NOISE vs SOURCE RESISTANCE
10k
E_o² = e_n² + (i_nR_S)² + 4KTR_S
1k
R_S
E_O
OPA166x
100
OPA165x
10
1
100
Resistor Noise
1k
10k
100k
Source Resistance (W)
Figure 3.
1M
G003
140
120
100
80
60
40
20
0
−20
10
GAIN AND PHASE vs FREQUENCY
180
C_L = 100pF
135
90
45
Gain
Phase
100 1k
0
10k 100k 1M 10M 100M
Frequency (Hz)
G005
Figure 5.
Time (1s/div)
G002
Figure 2.
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
15
12
V_S = ± 15 V
10
8
5
V_S = ± 5 V
2
V_S = ± 1.5 V
0
10k
100k
1M
Frequency (Hz)
Figure 4.
10M
G004
CLOSED-LOOP GAIN vs FREQUENCY
40
Gain = −1V/V
Gain = +1V/V
Gain = +10V/V
20
0
−20
1k
10k
100k
1M
10M
100M
Frequency (Hz)
G006
Figure 6.
6
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