Datasheet

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SBOS107A
OPA344, 2344, 4344
OPA345, 2345, 4345
5
TYPICAL PERFORMANCE CURVES
At T
A
= +25°C, V
S
= +5V, and R
L
= 10kΩ connected to V
S
/2, unless otherwise noted.
POWER SUPPLY AND COMMON-MODE
REJECTION RATIO vs FREQUENCY
10
Rejection Ratio (dB)
Frequency (Hz)
100 1k 10k 100k
100
80
60
40
20
10
+PSRR
CMRR
–PSRR
MAXIMUM OUTPUT VOLTAGE vs FREQUENCY
10k 100k
Maximum Output Voltage (V
PP
)
Frequency (Hz)
1M 10M
6
5
4
3
2
1
0
OPA344
V
S
= +5.5V
V
S
= +5V
V
S
= +2.7V
OPA345
CHANNEL SEPARATION vs FREQUENCY
100
Channel Separation (dB)
Frequency (Hz)
1k 10k 100k 1M
140
120
100
80
60
Dual and quad devices.
G = 1, all channels.
Quad measured channel
A to D or B to C—other
combinations yield improved
rejection.
VOLTAGE AND CURRENT NOISE
SPECTRAL DENSITY vs FREQUENCY
1
Voltage Noise (nV/√Hz)
Frequency (Hz)
10 100 1k 10k 100k 1M 10M
10000
1000
100
10
Current Noise (fA/√Hz)
100
10
1
0.1
V
N
I
N
OPEN-LOOP GAIN/PHASE vs FREQUENCY
0.1 1
Gain (dB)
0
30
60
90
120
150
180
Phase (°)
Frequency (Hz)
10 100 1k 10k 100k 1M 10M
120
100
80
60
40
20
0
Gain
Phase
OPA345
OPEN-LOOP GAIN/PHASE vs FREQUENCY
0.1 1
Gain (dB)
0
30
60
90
120
150
180
Phase (°)
Frequency (Hz)
10 100 1k 10k 100k 1M 10M
120
100
80
60
40
20
0
Gain
Phase
OPA344