MSP430FG439 Datasheet, PDF (38/88 Pages) Texas Instruments – Mixed-Signal Microcontrollers

MSP430FG439, MSP430FG438, MSP430FG437
SLAS380D – APRIL 2004 – REVISED NOVEMBER 2014
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ILoad
OAx
O/P(OAx)
R _Load
C _Load
AVCC
2
R _O/P(OAx)
Max
Min
0.2V
Figure 5-29. OAx Output Resistance Tests
AVCC -0.2V _{AVCC VOUT}
5.36 Operational Amplifier (OA), Dynamic Specifications
over recommended operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
V_CC
Fast Mode
SR Slew rate
Medium Mode
Slow Mode
Open-loop voltage gain
φ_m
GBW
t_en(on)
t_en(off)
5.37
Phase margin
C_L = 50 pF
Gain margin
C_L = 50 pF
Non-inverting, Fast Mode,
R_L = 47 kΩ,C_L = 50 pF
Gain-bandwidth product
(see Figure 5-30 and Figure 5-31)
Non-inverting, Medium Mode,
R_L = 300 kΩ, C_L = 50 pF
Non-inverting, Slow Mode,
R_L = 300 kΩ, C_L = 50 pF
Enable time on
t_on, non-inverting, Gain = 1
Enable time off
OA Dynamic Specifications Typical Characteristics
2.2 V, 3 V
2.2 V, 3 V
2.2 V, 3 V
MIN TYP MAX UNIT
1.2
0.8
V/µs
0.3
100
dB
60
deg
20
dB
2.2
1.4
MHz
0.5
10
20 µs
1 µs
140
120
Fast Mode
100
80
Medium Mode
60
40
20
0
Slow Mode
-20
-40
-60
-80
0.001 0.01 0.1 1
10 100 1000 10000
Input Frequency - kHz
Figure 5-30. Typical Open-Loop Gain vs Frequency
0
-50
-100
-150
-200
Fast Mode
Medium Mode
Slow Mode
-250
1
10
100
1000
Input Frequency - kHz
Figure 5-31. Typical Phase vs Frequency
10000
38
Specifications
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