SGM8141 Datasheet, PDF (4/11 Pages) SG Micro Corp – Operational Amplifier

SGM8141
380nA, Single Rail-to-Rail I/O
Operational Amplifier
ELECTRICAL CHARACTERISTICS
+V_S = +1.4V to +5.0V, -V_S = GND, T_A = +25°C, 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
AC ELECTRICAL CHARACTERISTICS
Gain-Bandwidth Product (GBP)
Slew Rate (SR)
Phase Margin (PM)
Input Voltage Noise (e_n p-p)
Input Voltage Noise Density (e_n)
NOTE1: Refer to Figure 1 and Figure 2.
CONDITIONS
+VS = 1.4V
+VS = 2.5V
+V_S = 5.0V
+V_S = 1.4V, V_OUT = 1V Step
+VS = 2.5V, VOUT = 1V Step
+VS = 5.0V, VOUT = 2V Step
+VS = 1.4V to 5.5V
+VS = 1.4V, f = 0.1Hz to 10Hz
+V_S = 2.5V, f = 0.1Hz to 10Hz
+V_S = 5.0V, f = 0.1Hz to 10Hz
+VS = 1.4V, f = 1kHz
+VS = 2.5V, f = 1kHz
+V_S = 5.0V, f = 1kHz
MIN
TYP
MAX
UNITS
4.3
4.7
kHz
5
1.2
1.4
V/ms
1.5
60
°
5.0
4.8
µV_P-P
4.9
122
123
nV/ HZ
125
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_IN
R_N
R_G
+V_S/2
+V_S
0.1µF 1µF
+
SGM8141
R_F
R_N
+V_S/2
V_OUT
C_L
R_L
+V_S/2
V_IN
R_G
+V_S
0.1µF 1µF
+
SGM8141
R_F
C_L
R_L
+V_S/2
V_OUT
Figure 1. AC and DC Test Circuit for Most Non-Inverting Gain
Conditions.
Figure 2. AC and DC Test Circuit for Most Inverting Gain
Conditions.
SG Micro Corp
4
www.sg-micro.com