Datasheet

 
  
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SLOS214C − OCTOBER 1998 − REVISED MARCH 2007
13
POST OFFICE BOX 655303 • DALLAS, TEXAS 75265
TYPICAL CHARACTERISTICS
Figure 38
−100
−90
−80
−70
−60
−50
−40
−30
PGA HARMONIC
DISTORTION
vs
FREQUENCY
f − Frequency − Hz
100k 1M 10M
Distortion − dBc
R
L
= 1 kΩ
Gain=+8 dB
V
O(PP)
= 2 V
V
CC
=±15 V
3rd Harmonic
V
CC
=±5 V
2nd Harmonic
V
CC
=±5 V
3rd Harmonic
V
CC
=±15 V
2nd Harmonic
Figure 39
PGA HARMONIC DISTORTION
vs
OUTPUT VOLTAGE
−40
−50
−60
−70
−80
−90
0 2.5 5 7.5 10 12.5 15
17.5
V
O(PP)
− Peak -To-Peak Output Volage − V
Distortion − dBc
R
L
= 1 kΩ
G= +8 dB
f = 1 MHz
−100
20
V
CC
± 5 V
3rd Harmonic
V
CC
± 5 V
2nd Harmonic
V
CC
± 15 V
2nd Harmonic
V
CC
± 15V
3rd Harmonic
Figure 40
100
120
140
160
180
200
220
−40 −20 0 20 40 60 80 100
PGA SLEW RATE
vs
FREE-AIR TEMPERATURE
T
A
− Free-Air Temperature − °C
R
L
=1 k Ω
V
CC
=+/−5 V
V
O(P-P)
=5 V
SR − Slew Rate − V/ Sµ
V
CC
=+/−15 V
V
O(P-P)
=20 V
Figure 41
PGA CLAMP ACCURACY
vs
FREE-AIR TEMPERATURE
300
200
100
0
−100
−300
−40 −20 0 20 40 60 80
100
T
A
− Free-Air Temperature − _C
V
H
− 15V
15-V Condition:
V
H
, V
L
= ±10 V
V
I
= ±10 V
Clamp Accuracy − mV
V
H
− 5V
V
L
− 15V
V
L
− 5V
5-V Condition:
V
H
, V
L
= ±2 V
V
I
= ±2 V
G = +2 dB
−200
Figure 42
t − Time − ns
0
−1
−3
0 100 200 300
− Output Voltage − V
1
2
PGA CLAMP RESPONSE
4
400 500
3
−2
−4
Clamped
Output
V
H
= 2 V
V
L
= −2 V
Unclamped
Output
V
O
V
CC
= ±5 V
Gain = 1,0,0 (+ 2 dB)
R
L
= 500 Ω
Figure 43
t − Time − ns
0
−1
−3
0 100 200 300
1
2
PGA CLAMP RESPONSE
4
400 500
3
−2
−4
V
CC
= +15 V, +5 V
Gain = 1,0,0 (+2 dB)
V
H
= V
CC+
Unclamped Output
Clamped Output
V
L
= 0 V
− Output Voltage − V
V
O
Figure 44
t − Time − ns
4
2
−2
0 50 100 150
6
8
12
200 250
10
0
−4
PGA CLAMP RESPONSE
V
CC
= +15 V
Gain = 1,0,0 (+2 dB)
V
L
= V
CC−
Unclamped
Output
− Output Voltage − V
V
O
Clamped
Output
V
H
= 5 V
Figure 45
100k
Shutdown Isolation − dB
f − Frequency − Hz
−20
−30
−40
−90
−80
−100
1M 10M 100M
500M
SHUTDOWN ISOLATION
vs
FREQUENCY
−60
−50
−70
Preamp: Forward Iso.
Preamp: Reverse Iso.
PGA: Reverse Iso.
PGA: Forward Iso.
V
CC
= ± 5 V & ± 15 V
V
I(PP)
= 2.5 V
Figure 46
V
SHDN
(5 V/Div)
V
CC
= ±5 V,±15
Gain = 1,0,1
(+8 dB)
t − Time − ns
0 100 200 300 400 500 600 700 800 9001000
R
L
= ∞
R
L
= 500 Ω
PGA SHUTDOWN RESPONSE
− Output Voltage − V
V
O
V
OUT
(500 mV/Div)