TYPICAL PERFORMANCE CURVES
At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted.
POWER-SUPPLY and COMMON-MODE
REJECTION vs FREQUENCY
OPEN-LOOP GAIN/PHASE vs FREQUENCY
160
140
120
100
80
0
100
80
60
40
20
0
PSRR
–45
–90
–135
–180
60
40
CMRR
VCM = –0.3V to (V+) –1.8V
20
0
–20
0.1
1
10
100
1k
10k 100k
1M
10M
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
INPUT VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
CHANNEL SEPARATION vs FREQUENCY
140
130
120
110
100
1k
100
10
1
10k
1k
Current Noise
Voltage Noise
100
10
1
Dual and quad devices.
G = 1, all channels.
Quad measured channel A to D
or B to C—other combinations
yield improved rejection.
0.1
10
100
1k
10k
100k
1
10
100
1k
10k
100k
1M
Frequency (Hz)
Frequency (Hz)
CLOSED-LOOP OUTPUT IMPEDANCE
vs FREQUENCY
TOTAL HARMONIC DISTORTION + NOISE
vs FREQUENCY
0.1
0.01
5k
4k
3k
2k
1k
0
G = 100
RL = 600
RL = 2k
G = 10
G = 10
G = 1
RL = 10k
RL = 600
RL = 2k
G = 1
0.001
0.0001
RL = 10k
10
100
1k
10k
100k
1M
10M
20
100
1k
10k 20k
Frequency (Hz)
Frequency (Hz)
OPA343, 2343, 4343
4
SBOS090A
TI [ TEXAS INSTRUMENTS ]
