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Электронный компонент: LT1230CN

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LT1229/LT1230
Dual and Quad 100MHz
Current Feedback Amplifiers
D
U
ESCRIPTIO
S
FEATURE
The LT1229/LT1230 dual and quad 100MHz current feed-
back amplifiers are designed for maximum performance
in small packages. Using industry standard pinouts, the
dual is available in the 8-pin miniDIP and the 8-pin SO
package while the quad is in the 14-pin DIP and 14-pin SO.
The amplifiers are designed to operate on almost any
available supply voltage from 4V (
2V) to 30V (
15V).
These current feedback amplifiers have very high input
impedance and make excellent buffer amplifiers. They
maintain their wide bandwidth for almost all closed-loop
voltage gains. The amplifiers drive over 30mA of output
current and are optimized to drive low impedance loads,
such as cables, with excellent linearity at high frequencies.
The LT1229/LT1230 are manufactured on Linear
Technology's proprietary complementary bipolar process.
For a single amplifier like these see the LT1227 and for
better DC accuracy see the LT1223.
s
100MHz Bandwidth
s
1000V/
s Slew Rate
s
Low Cost
s
30mA Output Drive Current
s
0.04% Differential Gain
s
0.1
Differential Phase
s
High Input Impedance: 25M
, 3pF
s
Wide Supply Range:
2V to
15V
s
Low Supply Current: 6mA Per Amplifier
s
Inputs Common Mode to Within 1.5V of Supplies
s
Outputs Swing Within 0.8V of Supplies
U
S
A
O
PPLICATI
s
Video Instrumentation Amplifiers
s
Cable Drivers
s
RGB Amplifiers
s
Test Equipment Amplifiers
U
A
O
PPLICATI
TYPICAL
+
V
OUT
LT1229 TA01
12.1k
R
F2
750
1% RESISTORS
WORST CASE CMRR = 22dB
TYPICALLY = 38dB
V
OUT
= G (V
IN+
V
IN
)
R
F1
= R
F2
R
G1
= (G 1) R
F2
R
G2
=
TRIM CMRR WITH R
G1
HIGH INPUT RESISTANCE DOES NOT LOAD CABLE EVEN
WHEN POWER IS OFF
1/2
LT1229
R
F2
G 1
R
G2
187
R
F1
750
R
G1
3.01k
+
1/2
LT1229
3.01k
3.01k
12.1k
V
IN
V
IN+
BNC INPUTS
Video Loop Through Amplifier
Loop Through Amplifier Frequency
Response
FREQUENCY (Hz)
10
60
GAIN (dB)
50
40
30
20
10
10
100
1k
10k
100M
LT1229 TA02
100k
1M
10M
0
COMMON-MODE SIGNAL
NORMAL SIGNAL
LT1229/LT1230
2
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
V
OS
Input Offset Voltage
T
A
= 25
C
3
10
mV
q
15
mV
Input Offset Voltage Drift
q
10
V/
C
I
IN
+
Noninverting Input Current
T
A
= 25
C
0.3
3
A
q
10
A
I
IN
Inverting Input Current
T
A
= 25
C
10
50
A
q
100
A
e
n
Input Noise Voltage Density
f = 1kHz, R
F
= 1k, R
G
= 10
, R
S
= 0
3.2
nV/
Hz
+i
n
Noninverting Input Noise Current Density
f = 1kHz, R
F
= 1k, R
G
= 10
, R
S
= 10k
1.4
pA/
Hz
in
Inverting Input Noise Current Density
f = 1kHz
32
pA/
Hz
R
IN
Input Resistance
V
IN
=
13V, V
S
=
15V
q
2
25
M
V
IN
=
3V, V
S
=
5V
q
2
25
M
C
IN
Input Capacitance
3
pF
Input Voltage Range
V
S
=
15V, T
A
= 25
C
13
13.5
V
q
12
V
V
S
=
5V, T
A
= 25
C
3
3.5
V
q
2
V
CMRR
Common-Mode Rejection Ratio
V
S
=
15V, V
CM
=
13V, T
A
= 25
C
55
69
dB
V
S
=
15V, V
CM
=
12V
q
55
dB
V
S
=
5V, V
CM
=
3V, T
A
= 25
C
55
69
dB
V
S
=
5V, V
CM
=
2V
q
55
dB
A
U
G
W
A
W
U
W
A
R
BSOLUTE
XI
TI
S
ELECTRICAL C
C
HARA TERISTICS
Supply Voltage ......................................................
18V
Input Current ......................................................
15mA
Output Short Circuit Duration (Note 1) ......... Continuous
Operating Temperature Range
LT1229C, LT1230C ............................... 0
C to 70
C
LT1229M, LT1230M ....................... 55
C to 125
C
Storage Temperature Range ................. 65
C to 150
C
Junction Temperature
Plastic Package .............................................. 150
C
Ceramic Package ............................................ 175
C
Lead Temperature (Soldering, 10 sec.) ................. 300
C
Each Amplifier, V
CM
= 0V,
5V
V
S
=
15V, pulse tested unless otherwise noted.
ORDER PART
NUMBER
LT1230MJ
LT1230CJ
LT1230CN
LT1230CS
ORDER PART
NUMBER
S8 PART MARKING
LT1229MJ8
LT1229CJ8
LT1229CN8
LT1229CS8
1229
W
U
U
PACKAGE/ORDER I FOR ATIO
N PACKAGE
14-LEAD PLASTIC DIP
J PACKAGE
14-LEAD CERAMIC DIP
LT1229 POI02
+
V
D
14
13
12
11
10
9
8
7
6
5
4
3
2
1
OUT A
IN A
+IN A
+IN B
IN B
OUT B
OUT C
V
IN D
OUT D
TOP VIEW
A
+IN D
+IN C
IN C
C
B
S PACKAGE
14-LEAD PLASTIC SOIC
T
J MAX
= 175
C,
JA
= 80
C/W (J)
T
J MAX
= 150
C,
JA
= 70
C/W (N)
T
J MAX
= 150
C,
JA
= 110
C/W (S)
8
7
6
5
4
3
2
1
+
IN A
+IN A
V
TOP VIEW
N8 PACKAGE
8-LEAD PLASTIC DIP
J8 PACKAGE
8-LEAD CERAMIC DIP
OUT A
LT1124 POI01
OUT B
V
IN B
+IN B
A
B
S8 PACKAGE
8-LEAD PLASTIC SOIC
T
J MAX
= 175
C,
JA
= 100
C/W (J8)
T
J MAX
= 150
C,
JA
= 100
C/W (N8)
T
J MAX
= 150
C,
JA
= 150
C/W (S8)
3
LT1229/LT1230
SYMBOL
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
Inverting Input Current
V
S
=
15V, V
CM
=
13V, T
A
= 25
C
2.5
10
A/V
Common-Mode Rejection
V
S
=
15V, V
CM
=
12V
q
10
A/V
V
S
=
5V, V
CM
=
3V, T
A
= 25
C
2.5
10
A/V
V
S
=
5V, V
CM
=
2V
q
10
A/V
PSRR
Power Supply Rejection Ratio
V
S
=
2V to
15V, T
A
= 25
C
60
80
dB
V
S
=
3V to
15V
q
60
dB
Noninverting Input Current
V
S
=
2V to
15V, T
A
= 25
C
10
50
nA/V
Power Supply Rejection
V
S
=
3V to
15V
q
50
nA/V
Inverting Input Current
V
S
=
2V to
15V, T
A
= 25
C
0.1
5
A/V
Power Supply Rejection
V
S
=
3V to
15V
q
5
A/V
A
V
Large-Signal Voltage Gain, (Note 2)
V
S
=
15V, V
OUT
=
10V, R
L
= 1k
q
55
65
dB
V
S
=
5V, V
OUT
=
2V, R
L
= 150
q
55
65
dB
R
OL
Transresistance,
V
OUT
/
I
IN
, (Note 2)
V
S
=
15V, V
OUT
=
10V, R
L
= 1k
q
100
200
k
V
S
=
5V, V
OUT
=
2V, R
L
= 150
q
100
200
k
V
OUT
Maximum Output Voltage Swing, (Note 2)
V
S
=
15V, R
L
= 400
, T
A
= 25
C
12
13.5
V
q
10
V
V
S
=
5V, R
L
= 150
, T
A
= 25
C
3
3.7
V
q
2.5
V
I
OUT
Maximum Output Current
R
L
= 0
, T
A
= 25
C
30
65
125
mA
I
S
Supply Current, (Note 3)
V
OUT
= 0V, Each Amplifier, T
A
= 25
C
6
9.5
mA
q
11
mA
SR
Slew Rate, (Notes 4 and 6)
T
A
= 25
C
300
700
V/
s
SR
Slew Rate
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 400
2500
V/
s
t
r
Rise Time, (Notes 5 and 6)
T
A
= 25
C
10
20
ns
BW
Small-Signal Bandwidth
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 100
100
MHz
t
r
Small-Signal Rise Time
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 100
3.5
ns
Propagation Delay
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 100
3.5
ns
Small-Signal Overshoot
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 100
15
%
t
s
Settling Time
0.1%, V
OUT
= 10V, R
F
=1k, R
G
= 1k, R
L
=1k
45
ns
Differential Gain, (Note 7)
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 1k
0.01
%
Differential Phase, (Note 7)
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 1k
0.01
Deg
Differential Gain, (Note 7)
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 150
0.04
%
Differential Phase, (Note 7)
V
S
=
15V, R
F
= 750
, R
G
= 750
, R
L
= 150
0.1
Deg
The
q
denotes specifications which apply over the operating temperature
range.
Note 1: A heat sink may be required depending on the power supply
voltage and how many amplifiers are shorted.
Note 2: The power tests done on
15V supplies are done on only one
amplifier at a time to prevent excessive junction temperatures when testing
at maximum operating temperature.
Note 3: The supply current of the LT1229/LT1230 has a negative
temperature coefficient. For more information see the application
information section.
Note 4: Slew rate is measured at
5V on a
10V output signal while
operating on
15V supplies with R
F
= 1k, R
G
= 110
and R
L
= 400
. The
slew rate is much higher when the input is overdriven and when the
amplifier is operated inverting, see the applications section.
Note 5: Rise time is measured from 10% to 90% on a
500mV output
signal while operating on
15V supplies with R
F
= 1k, R
G
= 110
and R
L
=
100
. This condition is not the fastest possible, however, it does
guarantee the internal capacitances are correct and it makes automatic
testing practical.
Note 6: AC parameters are 100% tested on the ceramic and plastic DIP
packaged parts (J and N suffix) and are sample tested on every lot of the
SO packaged parts (S suffix).
Note 7: NTSC composite video with an output level of 2V
P
.
Each Amplifier, V
CM
= 0V,
5V
V
S
=
15V, pulse tested unless otherwise noted.
ELECTRICAL C
C
HARA TERISTICS
LT1229/LT1230
4
C
C
HARA TERISTICS
U
W
A
TYPICAL PERFOR
CE
Voltage Gain and Phase vs
3dB Bandwidth vs Supply
3dB Bandwidth vs Supply
Frequency, Gain = 40dB
Voltage, Gain = 100, R
L
= 100
Voltage, Gain = 100, R
L
= 1k
Voltage Gain and Phase vs
3dB Bandwidth vs Supply
3dB Bandwidth vs Supply
Frequency, Gain = 20dB
Voltage, Gain = 10, R
L
= 100
Voltage, Gain = 10, R
L
= 1k
Voltage Gain and Phase vs
3dB Bandwidth vs Supply
3dB Bandwidth vs Supply
Frequency, Gain = 6dB
Voltage, Gain = 2, R
L
= 100
Voltage, Gain = 2, R
L
= 1k
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
40
100
120
12
16
LT1229 TPC05
4
0
6
8
10
14
18
0
20
60
140
160
180
R
F
= 500
80
PEAKING
0.5dB
PEAKING
5dB
R
F
= 750
R
F
= 1k
R
F
= 2k
R
F
= 250
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
40
100
120
12
16
LT1229 TPC06
4
0
6
8
10
14
18
0
20
60
140
160
180
R
F
= 500
80
PEAKING
0.5dB
PEAKING
5dB
R
F
= 750
R
F
= 1k
R
F
= 2k
R
F
= 250
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
4
10
12
12
16
LT1229 TPC08
4
0
6
8
10
14
18
0
2
6
14
16
18
R
F
= 500
8
R
F
= 1k
R
F
= 2k
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
4
10
12
12
16
LT1229 TPC09
4
0
6
8
10
14
18
0
2
6
14
16
18
R
F
= 500
8
R
F
= 1k
R
F
= 2k
FREQUENCY (MHz)
0
VOLTAGE GAIN (dB)
2
4
6
8
0.1
10
100
LT1229 TPC01
2
1
7
5
3
1
1
PHASE SHIFT (DEG)
180
90
0
45
135
225
PHASE
GAIN
V
S
= 15V
R
L
= 100
R
F
= 750
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
40
100
120
12
16
LT1229 TPC02
4
0
6
8
10
14
18
0
20
60
140
160
180
R
F
= 500
80
PEAKING
0.5dB
PEAKING
5dB
R
F
= 750
R
F
= 1k
R
F
= 2k
SUPPLY VOLTAGE (V)
2
3dB BANDWIDTH (MHz)
40
100
120
12
16
LT1229 TPC03
4
0
6
8
10
14
18
0
20
60
140
160
180
80
PEAKING
0.5dB
PEAKING
5dB
R
F
= 750
R
F
= 1k
R
F
= 2k
R
F
= 500
FREQUENCY (MHz)
14
VOLTAGE GAIN (dB)
16
18
20
22
0.1
10
100
LT1229 TPC04
12
1
21
19
17
15
13
PHASE SHIFT (DEG)
180
90
0
45
135
225
PHASE
GAIN
V
S
= 15V
R
L
= 100
R
F
= 750
FREQUENCY (MHz)
34
VOLTAGE GAIN (dB)
36
38
40
42
0.1
10
100
LT1229 TPC07
32
1
41
39
37
35
33
PHASE SHIFT (DEG)
180
90
0
45
135
225
PHASE
GAIN
V
S
= 15V
R
L
= 100
R
F
= 750
5
LT1229/LT1230
C
C
HARA TERISTICS
U
W
A
TYPICAL PERFOR
CE
Input Common-Mode Limit vs
Output Saturation Voltage vs
Output Short-Circuit Current vs
Temperature
Temperature
Junction Temperature
Maximum Capacitance Load vs
Total Harmonic Distortion vs
2nd and 3rd Harmonic
Feedback Resistor
Frequency
Distortion vs Frequency
FREQUENCY (Hz)
TOTAL HARMONIC DISTORTION (%)
0.01
0.10
10
1k
10k
100k
LT1229 TPC11
0.001
100
V
S
= 15V
R
L
= 400
R
F
= R
G
= 750
V
O
= 7V
RMS
V
O
= 1V
RMS
TEMPERATURE (C)
25
OUTPUT SHORT CIRCUIT CURRENT (mA)
40
60
100
150
LT1229 TPC15
0
50
25
50
75
125
175
30
70
50
FREQUENCY (Hz)
10
1
10
100
1k
100k
LT1229 TPC16
100
10k
SPOT NOISE (nV/
Hz OR pA/
Hz)
i
n
e
n
+i
n
FREQUENCY (Hz)
OUTPUT IMPEDANCE (
)
0.1
100
10k
1M
10M
100M
LT1229 TPC18
0.001
100k
0.01
10
V
S
= 15V
1.0
R
F
= R
G
= 2k
R
F
= R
G
= 750
FEEDBACK RESISTOR (k
)
10
CAPACITIVE LOAD (pF)
100
1000
10000
0
2
3
LT1229 TPC10
1
1
V
S
= 5V
V
S
= 15V
R
L
= 1k
PEAKING
5dB
GAIN = 2
FREQUENCY (MHz)
1
70
DISTORTION (dBc)
60
50
40
30
20
10
100
LT1229 TPC12
V
S
= 15V
V
O
= 2V
P-P
R
L
= 100
R
F
= 750
A
V
= 10dB
2ND
3RD
TEMPERATURE (C)
COMMON MODE RANGE (V)
2.0
V
+
50
25
75
125
LT1229 TPC13
V
0
1.0
1.0
2.0
0.5
1.5
1.5
0.5
25
50
100
V
+
= 2V TO 18V
V
= 2V TO 18V
TEMPERATURE (C)
OUTPUT SATURATION VOLTAGE (V)
V
+
50
25
75
125
LT1229 TPC14
V
0
1.0
1.0
0.5
0.5
25
50
100
R
L
=
2V
V
S
18V
Spot Noise Voltage and Current vs
Power Supply Rejection vs
Output Impedance vs
Frequency
Frequency
Frequency
FREQUENCY (Hz)
POWER SUPPLY REJECTION (dB)
40
80
10k
1M
10M
100M
LT1229 TPC17
0
100k
V
S
= 15V
R
L
= 100
R
F
= R
G
= 750
NEGATIVE
20
60
POSITIVE