OPA354-Q1_15 Datasheet, PDF (8/36 Pages) Texas Instruments – OPAx354-Q1 250-MHz, Rail-to-Rail I/O, CMOS Operational Amplifiers

OPA354-Q1, OPA2354-Q1, OPA4354-Q1
SBOS492B – JUNE 2009 – REVISED DECEMBER 2014
Typical Characteristics (continued)
T_A = 25°C, V_S = 5 V, R_F = 0 Ω, R_L = 1 kΩ connected to V_S / 2 (unless otherwise noted)
10k
3
1k
Voltage Noise
Current Noise
100
0
G = +1
-3 ^{RF = 0W}
V_O = 0.1V_PP
-6 ^{CL = 0pF}
-9
10
-12
1
10 100 1k 10k 100k 1M 10M 100M
Frequency (Hz)
-15
100k
1M
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R_L = 10kW
R_L = 1kW
R_L = 100W
R_L = 50W
10M
100M
1G
Frequency (Hz)
Figure 11. Input Voltage and Current Noise
Spectral Density vs Frequency
9
G = +1
6 V_O = 0.1V_PP
R_S = 0W
3
C_L = 100pF
0
-3
C_L = 47pF
-6
-9
C_L = 5.6pF
-12
-15
100k
1M
10M
100M
1G
Frequency (Hz)
Figure 12. Frequency Response for Various R_L
160
140 ^{For 0.1dB}
Flatness
120
100
80
60
V_IN
R_S
40
OPA354-Q1
V_O
C_L 1kW
20
0
1
10
100
1k
Capacitive Load (pF)
Figure 13. Frequency Response for Various C_L
3
G = +1
0 ^{VO = 0.1VPP}
C_L = 5.6pF, R_S = 0W
-3
C_L = 47pF, R_S = 140W
-6
C_L = 100pF, R_S = 120W
-9
-12
V_IN
OPA354-Q1
R_S
V_O
C_L 1kW
-15
100k
1M
10M
100M
1G
Frequency (Hz)
Figure 14. Recommended R_S vs Capacitive Load
100
CMRR
80
PSRR+
60
PSRR-
40
20
0
10k
100k
1M
10M
100M
1G
Frequency (Hz)
Figure 15. Frequency Response vs Capacitive Load
Figure 16. Common-Mode Rejection Ratio and Power-
Supply Rejection Ratio vs Frequency
8
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