OPA2227-EP_13 Datasheet, PDF (5/23 Pages) Texas Instruments – HIGH PRECISION, LOW NOISE OPERATIONAL AMPLIFIER

OPA2227-EP
www.ti.com
SBOS594A – MARCH 2012 – REVISED NOVEMBER 2012
TYPICAL CHARACTERISTICS
At T_A = 25°C, R_L = 10 kΩ, V_S = ±15 V (unless otherwise noted).
OPEN-LOOP GAIN/PHASE vs FREQUENCY
180
0
160
–20
POWER SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
140
140
G
120
100
80
φ
–40
120
–60
100
–80
–100
80
+CMRR
+PSRR
60
–120
60
–PSRR
40
–140
20
–160
40
0
–20
0.01 0.10 1
–180
–200
10 100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
-20
–0
0.1
1
10 100 1k 10k 100k 1M
Frequency (Hz)
100k
10k
1k
100
10
1
0.1
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
Current Noise
Voltage Noise
1
10
100
1k
10k
Frequency (Hz)
0.01
0.001
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
V_OUT = 3.5Vrms
0.0001
G = 1, R_L = 10kΩ
0.00001
20
100
1k
Frequency (Hz)
10k 20k
INPUT NOISE VOLTAGE vs TIME
1s/div
CHANNEL SEPARATION vs FREQUENCY
140
120
100
80
Dual and quad devices. G = 1, all channels.
Quad measured Channel A to D, or B to C;
60 _{other combinations yield similiar or improved}
rejection.
40
10
100
1k
10k
100k
1M
Frequency (Hz)
Copyright © 2012, Texas Instruments Incorporated
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