Datasheet

OPA227, 2227, 4227
OPA228, 2228, 4228
6
SBOS110A
www.ti.com
TYPICAL PERFORMANCE CURVES (CONT)
At T
A
= +25°C, R
L
=10kΩ, and V
S
= ±15V, unless otherwise noted.
OFFSET VOLTAGE PRODUCTION DISTRIBUTION
Percent of Amplifiers (%)
Offset Voltage (µV)
–150 –135 –120 –105
–90 –75 –60 –45 –30 –15
0
15 30 45 60 75 90
105 120 135 150
17.5
15.0
12.5
10.0
5.5
5.0
2.5
0
Typical distribution
of packaged units.
OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION
Percent of Amplifiers (%)
Offset Voltage Drift (µV)/°C
12
8
4
0
Typical distribution
of packaged units.
0 0.5 1.0 1.5
10
8
6
4
2
0
–2
–4
–6
–8
–10
Offset Voltage Change (µV)
0 100 150 300
Time from Power Supply Turn-On (s)
WARM-UP OFFSET VOLTAGE DRIFT
50 200 250
10 100 1k 10k 100k 1M
140
120
100
80
60
40
Channel Separation (dB)
Frequency (Hz)
CHANNEL SEPARATION vs FREQUENCY
Dual and quad devices. G = 1, all channels.
Quad measured Channel A to D, or B to C;
other combinations yield similiar or improved
rejection.
INPUT NOISE VOLTAGE vs TIME
1s/div
50nV/div
VOLTAGE NOISE DISTRIBUTION (10Hz)
Percent of Units (%)
Noise (nV/√Hz)
3.160 3.25 3.34 3.43 3.51 3.60 3.69 3.78
24
16
8
0