Datasheet

OPA227, 2227, 4227
OPA228, 2228, 4228
5
SBOS110A
www.ti.com
TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, R
L
= 10kΩ, and V
S
= ±15V, unless otherwise noted.
0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M
180
160
140
120
100
80
60
40
20
0
–20
A
OL
(dB)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200
Phase (°)
Frequency (Hz)
OPEN-LOOP GAIN/PHASE vs FREQUENCY
G
φ
OPA228
20 100 1k 10k 20k
0.01
0.001
0.0001
0.00001
THD+Noise (%)
Frequency (Hz)
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
G = 1, R
L
= 10kΩ
V
OUT
= 3.5Vrms
OPA227
20 100 1k 10k 50k
0.01
0.001
0.0001
0.00001
THD+Noise (%)
Frequency (Hz)
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
G = 1, R
L
= 10kΩ
V
OUT
= 3.5Vrms
OPA228
0.01 0.10 1 10 100 1k 10k 100k 1M 10M 100M
180
160
140
120
100
80
60
40
20
0
–20
A
OL
(dB)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200
Phase (°)
Frequency (Hz)
OPEN-LOOP GAIN/PHASE vs FREQUENCY
G
OPA227
φ
10.1 10 100 1k 10k 100k 1M
140
120
100
80
60
40
-20
–0
PSRR, CMRR (dB)
Frequency (Hz)
POWER SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
+CMRR
+PSRR
–PSRR
0.1 101 100 1k 10k
100k
10k
1k
100
10
1
Voltage Noise (nV/√Hz)
Current Noise (fA/√Hz)
Frequency (Hz)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
Current Noise
Voltage Noise