Datasheet

20mV/div
Time(5 s/div)m
CMPSEL=0(CompOff)
G=4x1x2
V =100mV
OPP
R
L
=10kW
Frequency(Hz)
0.01 10M1M100k10k1k1001010.1
180
160
140
120
100
80
60
40
20
0
-20
OutputAmplifierOpen-LoopPhase( )°
C =10nF
L
R
L L
=10kW,C =10nF
R
L L
=1kW,C =10nF
C
L
£ 100pF
20mV/div
Time(5 s/div)m
CMPSEL=0(CompOff)
G=4x1x2
V =100mV
OPP
R
L
=10kW
Frequency(Hz)
10 100 1k 10k 100k 1M 10M
10k
1k
100
10
Open-LoopOutputImpedance( )W
I =0
L
I
L
=500mA
I =5mA
L
CMPSEL=1
CMPSEL=0
V (50mV/div)
OUT
Time(50 s/div)m
CMPSEL=1(CompOn),
R =10k R =100 ,
L ISO
W, W C =10nF,C
L F
=47pF,
G=600x1x2,f=4kHz,V =100mV
OPP
V (1V/div)
OUT
Time(50 s/div)m
CMPSEL=1(CompOn),
R =10k R =100 ,
L ISO
W, W C =10nF,C
L F
=47pF,
G=600x1x2,f=4kHz,V =4V
OPP
PGA308
www.ti.com SBOS440B –JULY 2008–REVISED DECEMBER 2010
TYPICAL CHARACTERISTICS (continued)
At T
A
= +25°C, V
S
= V
REF
= D
OUT
/V
CLAMP
= +5V, R
L
= 10kΩ and C
L
= 100pF connected to GND, unless otherwise noted.
Gain format is presented: G = FE-PGA × Fine Gain × Output Gain.
OUTPUT AMPLIFIER OPEN-LOOP PHASE vs CAPACITIVE LOAD DRIVE
FREQUENCY (CMP SEL = 0) C
L
= 1nF
Figure 25. Figure 26.
CAPACITIVE LOAD DRIVE OPEN-LOOP OUTPUT IMPEDANCE vs
C
L
= 10pF FREQUENCY
Figure 27. Figure 28.
SMALL-SIGNAL STEP RESPONSE LARGE-SIGNAL STEP RESPONSE
CMP SEL = 1 CMP SEL = 1
Figure 29. Figure 30.
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