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Электронный компонент: LT1010C

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1
LT1010
Fast
150mA Power Buffer
The LT
1010 is a fast, unity-gain buffer that can increase
the output capability of existing IC op amps by more than
an order of magnitude. This easy-to-use part makes fast
amplifiers less sensitive to capacitive loading and reduces
thermal feedback in precision DC amplifiers.
Designed to be incorporated within the feedback loop, the
buffer can isolate almost any reactive load. Speed can be
improved with a single external resistor. Internal operat-
ing currents are essentially unaffected by the supply
voltage range. Single supply operation is also practical.
This monolithic IC is supplied in an 8-pin miniDIP and the
plastic TO-220. The low thermal resistance power pack-
age is an aid in reducing operating junction temperatures.
s
20MHz Bandwidth
s
75V/
s Slew Rate
s
Drives
10V Into 75
s
5mA Quiescent Current
s
Drives Capacitive Loads > 1
F
s
Current and Thermal Limit
s
Operates from Single Supply
4.5V
s
Very Low Distortion Operation
s
Boost Op Amp Output
s
Isolate Capacitive Loads
s
Drive Long Cables
s
Audio Amplifiers
s
Video Amplifiers
s
Power Small Motors
s
Operational Power Supply
s
FET Driver
Very Low Distortion Buffered Preamplifier
, LTC and LT are registered trademarks of Linear Technology Corporation.
FEATURES
DESCRIPTIO
U
APPLICATIO S
U
TYPICAL APPLICATIO
U
+
LT1056CN8
LT1010CT
7
IN
OUT
OUTPUT
BOOST
V
+
V
+
1010 TA01
LM334
I
SET
= 2mA
R
SET
33.2
1%
NOTE 1: ALL RESISTORS 1% METAL FILM
NOTE 2: SUPPLIES WELL BYPASSED AND LOW Z
O
V
V
R7
50
C2
22pF
C1
22pF
V
+
18V
V
+
18V
R6
100
R8
100
R4
10k
R3
1k
R1
1k
R2
1M
3
2
4
6
FREQUENCY (Hz)
0.1
HARMONIC DISTORTION (%)
0.2
0.4
10
1k
10k
100k
1010 TA02
0
100
0.3
V
OUT
= 10V
P-P
R
L
= 400
2
LT1010
(Note 1)
Total Supply Voltage ..............................................
22V
Continuous Output Current ..............................
150mA
Continuous Power Dissipation (Note 2)
LT1010CN8 .................................................... 0.75W
LT1010CT ......................................................... 4.0W
Input Current (Note 3) .......................................
40mA
Operating Junction Temperature Range
LT1010C ............................................... 0
C to 125
C
ABSOLUTE AXI U RATI GS
W
W
W
U
PACKAGE/ORDER I FOR ATIO
U
U
W
Storage Temperature Range ................. 65
C to 150
C
Lead Temperature (Soldering, 10 sec).................. 300
C
100% Thermal Limit Burn In
ORDER PART
NUMBER
LT1010CN8
ORDER PART
NUMBER
LT1010CT
1
2
3
4
8
7
6
5
TOP VIEW
V
+
BIAS
OUT
NC
INPUT
NC
V
NC
N8 PACKAGE
8-LEAD PDIP
T
JMAX
= 100
C,
JA
= 130
C/W
T PACKAGE
5-LEAD PLASTIC TO-220
OUTPUT
BIAS
V
(TAB)
V
+
INPUT
FRONT VIEW
5
4
3
2
1
V
T
JMAX
= 125
C,
JC
= 25
C/W
PRECO DITIO I G
U
U
U
SYMBOL
PARAMETER
CONDITIONS (Note 4)
MIN
TYP
MAX
UNITS
V
OS
Output Offset Voltage
(Note 4)
0
150
mV
q
20
220
mV
V
S
=
15V, V
IN
= 0V
20
100
mV
I
B
Input Bias Current
I
OUT
= 0mA
0
250
A
I
OUT
150mA
0
500
A
q
0
800
A
A
V
Large-Signal Voltage Gain
q
0.995
1.00
V/V
R
OUT
Output Resistance
I
OUT
=
1mA
5
10
I
OUT
=
150mA
5
10
q
12
Slew Rate
V
S
=
15V, V
IN
=
10V,
75
V/
s
V
OUT
=
8V, R
L
= 100
V
SOS
+
Positive Saturation Offset
I
OUT
= 0 (Note 5)
1.0
V
q
1.1
V
V
SOS
Negative Saturation Offset
I
OUT
= 0 (Note 5)
0.2
V
q
0.3
V
R
SAT
Saturation Resistance
I
OUT
=
150mA (Note 5)
22
q
28
ELECTRICAL CHARACTERISTICS
The
q
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
C. (See Note 4. Typical values in curves)
Consult LTC Marketing for parts specified with wider operating temperature ranges.
3
LT1010
SYMBOL
PARAMETER
CONDITIONS (Note 4)
MIN
TYP
MAX
UNITS
V
BIAS
Bias Terminal Voltage
R
BIAS
= 20
(Note 6)
700
840
mV
q
560
880
mV
I
S
Supply Current
I
OUT
= 0, I
BIAS
= 0
9
mA
q
10
mA
ELECTRICAL CHARACTERISTICS
The
q
indicates specifications which apply over the full operating
temperature range, otherwise specifications are at T
A
= 25
C. (See Note 4. Typical values in curves)
Note 1: Absolute Maximum Ratings are those values beyond which the life
of a device may be impaired.
Note 2: For case temperatures above 25
C, dissipation must be derated
based on a thermal resistance of 25
C/W for the T package and 130
C/W
for the N8 package for
ambient temperatures above 25
C. See Applications
Information.
Note 3: In current limit or thermal limit, input current increases sharply
with input-output differentials greater than 8V; so input current must be
limited. Input current also rises rapidly for input voltages 8V above V
+
or
0.5V below V
.
Note 4: Specifications apply for 4.5V
V
S
40V,
V
+ 0.5V
V
IN
V
+
1.5V and I
OUT
= 0, unless otherwise stated.
Temperature range is 0
C
T
J
125
C, T
C
100
C.
Note 5: The output saturation characteristics are measured with 100mV
output clipping. See Applications Information for determining available
output swing and input drive requirements for a given load.
Note 6: For the TO-220 package, the output stage quiescent current can be
increased by connecting a resistor between the BIAS pin and V
+
. The
increase is equal to the bias terminal voltage divided by this resistance.
TYPICAL PERFOR A CE CHARACTERISTICS
U
W
Bandwidth
Phase Lag
Phase Lag
QUIESCENT CURRENT (mA)
0
0
FREQUENCY (MHz)
20
50
10
20
1010 G01
10
40
30
30
40
R
L
= 200
R
L
= 50
V
IN
= 100mV
P-P
C
L
100pF
A
V
= 3dB
T
J
= 25
C
FREQUENCY (MHz)
2
5
5
10
PHASE LAG (DEGREES)
20
50
10
20
1010 G02
R
L
= 50
R
L
= 200
C
L
= 100pF
R
S
= 50
I
BIAS
= 0
T
J
= 25
C
FREQUENCY (MHz)
2
5
5
10
PHASE LAG (DEGREES)
20
50
10
20
1010 G03
R
L
= 50
R
L
= 200
C
L
= 100pF
R
S
= 50
R
BIAS
= 20
T
J
= 25
C
Small-Step Response
Output Impedance
Capacitive Loading
TIME (ns)
0
150
VOLTAGE CHANGE (mV)
100
50
0
50
150
10
20
1010 G04
30
100
R
L
= 100
T
J
= 25
C
INPUT
OUTPUT
FREQUENCY (MHz)
0.1
1
OUTPUT IMPEDANCE (
)
10
100
1
10
100
1010 G05
I
BIAS
= 0
T
J
= 25
C
FREQUENCY (MHz)
0.1
20
VOLTAGE GAIN (dB)
0
10
1
10
100
1010 G06
10
R
S
= 50
I
BIAS
= 0
T
J
= 25
C
100pF
3nF
0.1
F
4
LT1010
TYPICAL PERFOR A CE CHARACTERISTICS
U
W
Slew Response
Negative Slew Rate
Supply Current
TIME (ns)
50
OUTPUT VOLTAGE (V)
5
0
5
100
200
1010 G07
10
15
20
0
50
150
10
15
20
250
V
S
=
15V
R
L
= 100
T
J
= 25
C
f
1MHz
POSITIVE
NEGATIVE
I
BIAS
= 0
R
BIAS
= 20
QUIESCENT CURRENT (mA)
0
SLEW RATE (V/
s)
200
300
40
1010 G08
100
0
10
20
30
400
V
S
=
15V
0
V
IN
10V
R
L
= 200
R
L
= 100
R
L
= 50
FREQUENCY (MHz)
0
SUPPLY CURRENT (mA)
80
60
40
20
0
4
1010 G09
1
2
3
5
V
S
=
15V
V
IN
=
10V
I
L
= 0
T
C
= 25
C
Output Offset Voltage
Input Bias Current
Input Bias Current
TEMPERATURE (
C)
50
OFFSET VOLTAGE (mV)
100
150
150
1010 G10
50
0
0
50
100
200
V
IN
= 0
V
+
= 38V
V
= 2V
V
+
= 2V
V
= 38V
TEMPERATURE (
C)
50
BIAS CURRENT (
A)
100
150
150
1010 G10
50
0
0
50
100
200
V
IN
= 0
V
+
= 38V
V
= 2V
V
+
= 2V
V
= 38V
OUTPUT CURRENT (mA)
150
BIAS CURRENT (
A)
100
0
100
1010 G12
50
0
100
50
50
150
200
150
V
S
=
15V
R
L
= 75
T
J
= 125
C
T
J
= 25
C
T
J
= 55
C
Voltage Gain
Output Resistance
Output Noise Voltage
TEMPERATURE (
C)
50
0.997
GAIN (V/
V)
0.998
0.999
0
50
100
150
1010 G13
1.000
I
OUT
= 0
V
S
= 40V
V
S
= 4.5V
TEMPERATURE (
C)
50
0
OUTPUT RESISTANCE (
)
4
8
0
50
100
150
1010 G14
12
2
6
10
I
OUT
150mA
FREQUENCY (Hz)
10
100
NOISE VOLTAGE (nV/
Hz) 150
200
100
1k
10k
1010 G15
50
0
T
J
= 25
C
R
S
= 1k
R
S
= 50
5
LT1010
TYPICAL PERFOR A CE CHARACTERISTICS
U
W
Positive Saturation Voltage
Negative Saturation Voltage
Supply Current
TEMPERATURE (
C)
50
SATURATION VOLTAGE (V)
2
3
150
1010 G16
1
0
0
50
100
4
I
L
= 150mA
I
L
= 50mA
I
L
= 5mA
TEMPERATURE (
C)
50
SATURATION VOLTAGE (V)
2
3
150
1010 G16
1
0
0
50
100
4
I
L
= 150mA
I
L
= 50mA
I
L
= 5mA
TOTAL SUPPLY VOLTAGE (V)
0
SUPPLY CURRENT (mA)
5
6
40
1010 G18
4
3
10
20
30
7
T
J
= 55
C
T
J
= 25
C
T
J
= 125
C
V
IN
= 0
I
OUT
= 0
I
BIAS
= 0
Bias Terminal Voltage
Total Harmonic Distortion
Total Harmonic Distortion
TEMPERATURE (
C)
50
0.5
BIAS TERMINAL VOLTAGE (V)
0.7
1.0
0
50
1010 G19
0.6
0.9
0.8
100
150
V
S
=
20V
R
BIAS
= 100
R
BIAS
= 20
OUTPUT VOLTAGE (V
P-P
)
0.1
0.2
HARMONIC DISTORTION (%)
0.3
0.4
1
10
100
1010 G20
0.1
0
R
L
= 50
f = 10kHz
V
S
=
15V
T
C
= 25
C
I
BIAS
= 0
R
BIAS
= 50
FREQUENCY (kHz)
1
0.4
HARMONIC DISTORTION (%)
0.6
0.8
10
100
1000
1010 G21
0.2
0
I
BIAS
= 0
V
S
=
15V
V
OUT
=
10V
T
C
= 25
C
R
L
= 50
R
L
= 100
Shorted Input Characteristics
Peak Power Capability
Peak Output Current
INPUT VOLTAGE (V)
15
INUPT CURRENT (mA)
0
0
10
1010 G22
25
50
10
5
5
25
50
15
V
S
=
15V
V
OUT
= 0
T
J
= 25
C
PULSE WIDTH (ms)
1
0
PEAK POWER (W)
2
4
6
8
10
100
1010 G23
10
T
C
= 85
C
TO-220
TEMPERATURE (
C)
50
0
OUTPUT CURRENT (A)
0.2
0.5
0
50
1010 G24
0.1
0.4
0.3
100
150
V
S
=
15V
V
OUT
= 0
SINK
SOURCE