ISL28110_11 Datasheet, PDF (19/25 Pages) Intersil Corporation – Precision Low Noise JFET Operational Amplifiers

ISL28110, ISL28210
Characterization vs Simulation Results
1000
V_S = ±18V
1000
1000
V_S = ±18V
100
INPUT NOISE VOLTAGE
10
100
INPUT NOISE VOLTAGE
100
10
1
0.1
1
10
100
1k
FREQUENCY (Hz)
1
10k
100k
FIGURE 48. CHARACTERIZED INPUT NOISE VOLTAGE
10
0.1
1
10
100
1k
10k
FREQUENCY (Hz)
FIGURE 49. SIMULATED INPUT NOISE VOLTAGE
100k
70
A_CL = 1000
60
R_F = 100kΩ, R_G = 100Ω
50
R_F = 100kΩ, R_G = 1kΩ
A_CL = 100
40
30
A_CL = 10
20
V_S = ±5V & ±15V
C_L = 4pF
R_L = OPEN
V_OUT = 100mV_P-P
R_F = 100kΩ, R_G = 10kΩ
10
A_CL = 1
0
-10
1k
R_F = 0, R_G = ∞
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FIGURE 50. CHARACTERIZED CLOSED LOOP GAIN vs FREQUENCY
70
A_CL = 1000
60
R_F = 100kΩ, R_G = 100Ω
50
R_F = 100kΩ, R_G = 1kΩ
A_CL = 100
40
30
A_CL = 10
20
V_S = ±5V & ±15V
C_L = 4pF
R_L = OPEN
V_OUT = 100mV_P-P
10 ^{RF = 100kΩ, RG = 10kΩ}
A_CL = 1
0
-10
1k
R_F = 0, R_G = ∞
10k
100k
1M
10M
100M
FREQUENCY (Hz)
FIGURE 51. SIMULATED CLOSED LOOP GAIN vs FREQUENCY
0.15
0.10
0.05
V_S = ±15V
A_V = 1
R_L = 2k
C_L = 4pF
0
-0.05
-0.10
-0.15
0
0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.9 1.0
TIME (µs)
FIGURE 52. CHARACTERIZED SMALL SIGNAL TRANSIENT
RESPONSE vs R_L, V_S = ±0.9V, ±2.5V
0.15
0.10
0.05
V_S = ±15V
A_V = 1
R_L = 2k
C_L = 4pF
0
-0.05
-0.10
-0.15
0
0.2
0.4
0.6
0.8
1.0
TIME (µs)
FIGURE 53. SIMULATED SMALL SIGNAL TRANSIENT RESPONSE vs
R_L, V_S = ±0.9V, ±2.5V
19
FN6639.2
September 14, 2011