參數(shù)資料
型號: LBPC
廠商: Linear Technology Corporation
英文描述: Precision, 100uA Gain Selectable Amplifier
中文描述: 精密,100uA的可選增益放大器
文件頁數(shù): 7/24頁
文件大?。?/td> 352K
代理商: LBPC
LT1996
7
1996f
PIU
P9 (Pin 1):
Noninverting Gain-of-9 input. Connects a 50k
internal resistor to the op amp’s noninverting input.
P27 (Pin 2):
Noninverting Gain-of-27 input. Connects a
(50k/3) internal resistor to the op amp’s noninverting input.
P81 (Pin 3):
Noninverting Gain-of-81 input. Connects a
(50k/9) internal resistor to the op amp’s noninverting input.
V
EE
(Pin 4):
Negative Power Supply. Can be either ground
(in single supply applications), or a negative voltage (in
split supply applications).
REF (Pin 5):
Reference Input. Sets the output level when
difference between inputs is zero. Connects a 450k internal
resistor to the op amp’s noninverting input.
OUT (Pin 6):
Output. V
OUT
= V
REF
+ 9 (V
P1
– V
M1
) + 27
(V
P3
– V
M3
) + 81 (V
P9
– V
M9
).
V
CC
(Pin 7):
Positive Power Supply. Can be anything from
2.7V to 36V above the V
EE
voltage.
M81 (Pin 8):
Inverting Gain-of-81 input. Connects a
(50k/9) internal resistor to the op amp’s inverting input.
M27 (Pin 9):
Inverting Gain-of-27 input. Connects a
(50k/3) internal resistor to the op amp’s inverting input.
M9 (Pin 10):
Inverting Gain-of-9 input. Connects a 50k
internal resistor to the op amp’s inverting input.
(Difference Amplifier Configuration)
Gain and Phase vs Frequency
Gain vs Frequency
Small Signal Transient Response,
Gain = 9
Small Signal Transient Response,
Gain = 27
0.01Hz to 1Hz Voltage Noise
TYPICAL PERFOR AU
(Difference Amplifier Configuration)
FREQUENCY (kHz)
G
1996 G16
V
= 5V, 0V
TA = 25
°
C
50
40
30
20
10
0
0.5
10
100
500
1
GAIN = 9
GAIN = 27
GAIN = 81
FREQUENCY (kHz)
1
G
P
10
100
400
1996
G17
0.1
V
= 5V, 0V
TA = 25
°
C
GAIN = 9
PHASE
(RIGHT AXIS)
GAIN
(LEFT AXIS)
0
–20
–40
–60
–80
–100
–120
–140
–160
–180
–200
40
30
20
10
–10
0
V
S
=
±
15V
T
= 25
°
C
MEASURED IN G =117
REFERRED TO OP AMP INPUTS
0
10
20 30 40 50 60 70
TIME (s)
80 90 100
O
1996
G21
50mV/DIV
10
μ
s/DIV
1996 G18
50mV/DIV
20
μ
s/DIV
1996 G19
50mV/DIV
50
μ
s/DIV
1996 G20
Small Signal Transient Response,
Gain = 81
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