SGM8044_15 Datasheet, PDF (4/11 Pages) SG Micro Corp – Operational Amplifier

SGM8044
670nA, Quad Rail-to-Rail I/O
Operational Amplifier
ELECTRICAL CHARACTERISTICS (continued)
(+V_S = +1.4V to +5.0V, -V_S = GND, T_A = +25℃, V_CM = +V_S/2, V_OUT ≈ +V_S/2 and R_L = 1MΩ to +V_S/2, C_L = 60pF ⁽¹⁾, unless otherwise
noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX UNITS
AC ELECTRICAL CHARACTERISTICS
+V_S = 1.4V
13.5
Gain-Bandwidth Product
GBP +V_S = 2.5V
14.5
kHz
+V_S = 5.0V
15
+V_S = 1.4V, V_OUT = 1V Step
3.0
Slew Rate
SR
+V_S = 2.5V, V_OUT = 1V Step
3.1
V/ms
+V_S = 5.0V, V_OUT = 2V Step
3.4
Phase Margin
PM +V_S = 1.4V to 5.5V
60
°
+V_S = 1.4V, f = 0.1Hz to 10Hz
3.5
Input Voltage Noise
e_n p-p +V_S = 2.5V, f = 0.1Hz to 10Hz
3.4
µV_P-P
+V_S = 5.0V, f = 0.1Hz to 10Hz
3.2
Input Voltage Noise Density
+V_S = 1.4V, f = 1kHz
e_n
+V_S = 2.5V, f = 1kHz
205
185
nV/ HZ
+V_S = 5.0V, f = 1kHz
190
NOTE: 1. Refer to Figure 1 and Figure 2.
TEST CIRCUITS
The test circuits used for the DC and AC tests are shown in Figure 1 and Figure 2. The bypass capacitors are laid
out according to the rules discussed in “Supply Bypass”.
+V_S
0.1μF 1μF
V_IN
+V_S/2
R_N
+
1 _{4 SGM8044}
R_G
R_F
V_OUT
C_L
R_L
+V_S/2
Figure 1. AC and DC Test Circuit for Most Non-Inverting
Gain Conditions
+V_S
0.1μF 1μF
+V_S/2
V_IN
R_N
+
1 _{4 SGM8044}
R_G
R_F
V_OUT
C_L
R_L
+V_S/2
Figure 2. AC and DC Test Circuit for Most Inverting Gain
Conditions
SG Micro Corp
www.sg-micro.com
SEPTEMBER 2015
4