ISL28168_11 Datasheet, PDF (6/17 Pages) Intersil Corporation – Low Input Bias Current Op Amps

ISL28168, ISL28268
Typical Performance Curves V₊ = 5V, V_- = 0V, V_CM = 2.5V, R_L = Open
1
0
-1
R_f = R_g = 499
-2
R_f = R_g = 1k
-3
-4
-5 V₊ = 5V
-6 ^{RL = 1k}
-7
C_L = 16.3pF
A_V = +2
-8 _{VOUT = 10mVP-P}
-9
R_f = R_g = 10k
R_f = R_g = 4.99k
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
4
3
V_OUT = 10mV
2
V_OUT = 50mV
1
0
-1
V_OUT = 100mV
-2
-3
-4
V₊ = 5V
R_L = 1k
-5 _{CL = 16.3pF}
-6 _{AV = +1}
V_OUT = 1V
-7 _{VOUT = 10mVP-P}
-8
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 1. GAIN vs FREQUENCY vs FEEDBACK RESISTOR
VALUES R_f/R_g
FIGURE 2. GAIN vs FREQUENCY vs V_OUT, R_L = 1k
1
0
-1
-2
V_OUT = 10mV
-3
V_OUT = 50mV
-4
V_OUT = 100mV
-5 _{V+ = 5V}
V_OUT = 1V
-6 ^{RL = 10k}
-7
C_L = 16.3pF
A_V = +1
-8 _{VOUT = 10mVP-P}
-9
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 3. GAIN vs FREQUENCY vs V_OUT, R_L = 10k
1
0
-1
-2
V_OUT = 10mV
-3
V_OUT = 50mV
-4
V_OUT = 100mV
-5 _{V+ = 5V}
-6 ^RL ^{= 100k}
V_OUT = 1V
-7
C_L = 16.3pF
A_V = +1
-8 _{VOUT = 10mVP-P}
-9
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 4. GAIN vs FREQUENCY vs V_OUT, R_L = 100k
4
3
R_L = 1k
2
1
0
-1
-2
-3 ^{V+ = 5V}
-4 ^{CL = 16.3pF}
A_V = +1
-5 _{VOUT = 10mVP-P}
R_L = 100k
-6
1k
10k
100k
FREQUENCY (Hz)
R_L = 10k
1M
FIGURE 5. GAIN vs FREQUENCY vs R_L
70
60 ^{AV = 1001}
50
40 ^{AV = 101}
30
20 ^{AV = 10}
AV = 1, R_g = INF, R_f = 0
AV = 10, R_g= 1k, R_f = 9.09k
AV = 101, R_g = 1k, R_f = 100k
AV = 1001, R_g = 1k, R_f = 1M
V₊ = 5V
C_L = 16.3pF
R_L = 10k
V_OUT = 10mV_P-P
10
A_V = 1
0
-10
10
100
1k
10k
100k
1M
FREQUENCY (Hz)
FIGURE 6. FREQUENCY RESPONSE vs CLOSED LOOP GAIN
6
FN6378.4
July 25, 2011