ISL28177_14 Datasheet, PDF (12/15 Pages) Intersil Corporation – 40V General Purpose Precision Operational Amplifier

ISL28177
Characterization vs Simulation Results (Continued)
6
5
4
3
2
1
0
-1
-2
V_S = ±15V
-3
A_V = 1
-4
R_L = 2k AND 10k
-5
C_L = 4pF
-6
0 100 200 300 400 500 600 700 800 900 1k
TIME (µs)
FIGURE 30. CHARACTERIZED LARGE SIGNAL TRANSIENT
RESPONSE vs R_L, V_S = ±15V
6
5
4
3
2
1
0
-1
-2
V_S = ±15V
-3
A_V = 1
-4
R_L = 2k AND 10k
-5
C_L = 4pF
-6
0 100 200 300 400 500 600 700 800 900 1k
TIME (µs)
FIGURE 31. SIMULATED LARGE SIGNAL TRANSIENT
RESPONSE, V_S = ±14V
180
160
140
PHASE
120
100
80
60
40
20
GAIN
0 V_S = ±15V
-20 ^{RL = 1MΩ}
SIMULATION
-40
0.01 0.1 1 10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
FIGURE 32. SIMULATED (DESIGN) OPEN-LOOP GAIN, PHASE vs
FREQUENCY
180
160
140
PHASE
120
100
80
60
40
20
GAIN
0 V_S = ±15V
-20 ^{RL = 1MΩ}
SIMULATION
-40
0.01 0.1 1 10 100 1k 10k 100k 1M 10M 100M
FREQUENCY (Hz)
FIGURE 33. SIMULATED (SPICE) OPEN-LOOP GAIN, PHASE vs
FREQUENCY
8
6
C_L = 22nF
C_L = 10nF
4
2
C_L = 4700pF
0
-2
-4 _{RL = 10k}
-6 ^{AV = +1}
V_OUT = 50mV_P-P
-8 V_S = ±15V
-10
C_L = 2200pF
C_L = 1000pF
C_L = 4pF
10
100
1k
10k 100k
1M
10M
FREQUENCY (Hz)
FIGURE 34. CHARACTERIZEDUNITY GAIN
FREQUENCY RESPONSE vs C_L
12
10
8
C_L = 22nF
6
C_L = 10nF
4
C_L = 4700pF
2
0
-2
C_L = 2200pF
-4
C_L = 1000pF
-6
-8
C_L = 4pF
-10
10
100
1k
10k 100k
1M
10M
FREQUENCY (Hz)
FIGURE 35. SIMULATED UNITY GAIN FREQUENCY RESPONSE vs C_L
FN7859.2
April 5, 2012