Datasheet

5
LT1794
TYPICAL PERFOR A CE CHARACTERISTICS
UW
Open-Loop Gain and Phase
vs Frequency
–3dB Bandwidth
vs Supply Current Slew Rate vs Supply Current
FREQUENCY (Hz)
–20
GAIN (dB)
PHASE (DEG)
100
120
–40
–60
80
20
60
40
0
100k 10M 100M
1794 G07
–80
–160
80
120
–200
–240
40
–80
0
–40
–120
–280
1M
T
A
= 25°C
V
S
= ±12V
A
V
= –10
R
L
= 100Ω
I
S
PER AMPLIFIER = 10mA
PHASE
GAIN
SUPPLY CURRENT PER AMPLIFIER (mA)
2
0
–3dB BANDWIDTH (MHz)
5
15
20
25
6 8 10 12 14
45
1794 G08
10
4
30
35
40
T
A
= 25°C
V
S
= ±12V
A
V
= 10
R
L
= 100Ω
SUPPLY CURRENT PER AMPLIFIER (mA)
2
SLEW RATE (V/µs)
600
800
1000
11 12
1794 G09
400
200
500
700
900
300
100
0
345
67
8910
13 14
15
T
A
= 25°C
V
S
= ±12V
A
V
= –10
R
L
= 1k
RISING
FALLING
CMRR vs Frequency PSRR vs Frequency
Frequency Response
vs Supply Current
FREQUENCY (MHz)
0.1
40
COMMON MODE REJECTION RATIO (dB)
50
60
70
80
1 10 100
1794 G10
30
20
10
0
90
100
T
A
= 25°C
V
S
= ±12V
I
S
= 10mA PER AMPLIFIER
FREQUENCY (MHz)
30
POWER SUPPLY REJECTION (dB)
90
100
20
10
80
50
70
60
40
0.01 1 10 100
1794 G11
–10
0
0.1
V
S
= ±12V
A
V
= 10
I
S
= 10mA PER AMPLIFIER
(–) SUPPLY
(+) SUPPLY
FREQUENCY (Hz)
1k 10k
0
GAIN (dB)
5
10
15
20
100k 1M 10M 100M
1794 G12
–5
–10
–15
–20
25
30
V
S
= ±12V
A
V
= 10
2mA PER AMPLIFIER
10mA PER AMPLIFIER
15mA PER AMPLIFIER
Output Impedance vs Frequency I
SHDN
vs V
SHDN
Supply Current vs V
SHDN
FREQUENCY (MHz)
0.01 0.1
0.01
OUTPUT IMPEDANCE (Ω)
1
1000
1 10 100
1734 G13
0.1
10
100
T
A
= 25°C
V
S
±12V
I
S
PER
AMPLIFIER = 2mA
I
S
PER
AMPLIFIER = 10mA
I
S
PER
AMPLIFIER = 15mA
V
SHDN
(V)
0
I
SHDN
(mA)
1.5
2.0
2.5
4.0
1794 G14
1.0
0.5
0
1.0
2.0
3.0
5.0
3.5
0.5
1.5
2.5
4.5
T
A
= 25°C
V
S
= ±12V
V
SHDNREF
= 0V
V
SHDN
(V)
0
SUPPLY CURRENT PER AMPLIFIER (mA)
15
20
25
30
35
4.0
1794 G14
10
5
0
1.0
2.0
3.0
5.0
3.5
0.5
1.5
2.5
4.5
T
A
= 25°C
V
S
= ±12V
V
SHDNREF
= 0V