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