Datasheet
MCP6441/2/4
DS22257C-page 4 © 2010-2012 Microchip Technology Inc.
1.2 Test Circuits
The circuit used for most DC and AC tests is shown in
Figure 1-1. This circuit can independently set V
CM
and
V
OUT
(see Equation 1-1). Note that V
CM
is not the
circuit’s Common Mode voltage ((V
P
+V
M
)/2), and that
V
OST
includes V
OS
plus the effects (on the input offset
error, V
OST
) of the temperature, CMRR, PSRR and
A
OL
.
EQUATION 1-1:
FIGURE 1-1: AC and DC Test Circuit for
Most Specifications.
AC ELECTRICAL SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, T
A
= +25°C, V
DD
= +1.4V to +6.0V, V
SS
= GND,
V
CM
= V
DD
/2, V
OUT
≈ V
DD
/2, V
L
= V
DD
/2, R
L
= 1 MΩ to V
L
and C
L
= 60 pF. (Refer to Figure 1-1).
Parameters Sym Min Typ Max Units Conditions
AC Response
Gain Bandwidth Product GBWP — 9 — kHz
Phase Margin PM — 65 — ° G = +1 V/V
Slew Rate SR — 3 — V/ms
Noise
Input Noise Voltage E
ni
— 5 — µVp-p f = 0.1 Hz to 10 Hz
Input Noise Voltage Density e
ni
—190—nV/√Hz f = 1 kHz
Input Noise Current Density i
ni
—0.6—fA/√Hz f = 1 kHz
TEMPERATURE SPECIFICATIONS
Electrical Characteristics: Unless otherwise indicated, V
DD
= +1.4V to +6.0V and V
SS
= GND.
Parameters Sym Min Typ Max Units Conditions
Temperature Ranges
Operating Temperature Range T
A
-40 — +125 °C Note 1
Storage Temperature Range T
A
-65 — +150 °C
Thermal Package Resistances
Thermal Resistance, 5L-SC70 θ
JA
— 331 — °C/W
Thermal Resistance, 5L-SOT-23 θ
JA
—220.7—°C/W
Thermal Resistance, 8L-MSOP θ
JA
—211—°C/W
Thermal Resistance, 8L-SOIC θ
JA
—149.5—°C/W
Thermal Resistance, 8L-2x3 TDFN θ
JA
—52.5—°C/W
Thermal Resistance, 14L-SOIC θ
JA
—95.3—°C/W
Thermal Resistance, 14L-TSSOP θ
JA
— 100 — °C/W
Note 1: The internal junction temperature (T
J
) must not exceed the absolute maximum specification of +150°C.
G
DM
R
F
R
G
⁄
=
V
CM
V
P
V
DD
2
⁄
+()2
⁄
=
V
OUT
V
DD
2
⁄
()V
P
V
M
–()V
OST
1G
DM
+()++=
Where:
G
DM
= Differential Mode Gain (V/V)
V
CM
= Op Amp’s Common Mode
Input Voltage
(V)
V
OST
= Op Amp’s Total Input Offset Voltage (mV)
V
OST
V
IN–
V
IN+
–=
V
DD
R
G
R
F
V
OUT
V
M
C
B2
C
L
R
L
V
L
C
B1
100 kΩ
100 kΩ
R
G
R
F
V
DD
/2
V
P
100 kΩ
100 kΩ
60 pF1MΩ
1µF100 nF
V
IN–
V
IN+
C
F
6.8 pF
C
F
6.8 pF
MCP6441