OPA2277-EP Datasheet, PDF (7/21 Pages) Texas Instruments – OPA2277-EP High-Precision, Low-Noise Operational Amplifier

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7.6 Typical Characteristics
At T_A = 25°C, V_S = ±15 V, and R_L = 2 kΩ, unless otherwise noted.
140
120
100
80
60
40
20
0
–20
0.1
G
C_L = 0
C_L = 1500pF
0
–30
–60
φ
–90
–120
–150
–180
1 10 100 1k 10k 100k 1M 10M
Frequency (Hz)
140
120
100
80
60
40
20
0
0.1
OPA2277-EP
SBOS700 – DECEMBER 2014
–PSR
+PSR
CMR
1
10 100 1k 10k 100k 1M
Frequency (Hz)
Figure 1. Open-Loop Gain/Phase vs Frequency
1000
Current Noise
100
Figure 2. Power Supply and Common-Mode Rejection vs
Frequency
Noise signal is bandwidth limited to
lie between 0.1Hz and 10Hz.
10
Voltage Noise
1
1
10
100
1k
10k
Frequency (Hz)
Figure 3. Input Noise and Current Noise Spectral Density vs
Frequency
140
120
100
Dual and quad devices. G = 1,
all channels. Quad measured
80 _{channel A to D or B to C —other}
combinations yield similar or
improved rejection.
60
40
10
100
1k
10k
100k
1M
Frequency (Hz)
Figure 5. Channel Separation vs Frequency
1s/div
Figure 4. Input Noise Voltage vs Time
1
0.1
0.01
G = 10, R_L = 2kΩ, 10kΩ
G = 1, R_L = 2kΩ, 10kΩ
0.001
10
100
1k
10k
V_OUT = 3.5 Vrms
Frequency (Hz)
100k
Figure 6. Total Harmonic Distortion + Noise vs Frequency
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