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LT1208/LT1209 Dual and Quad 45MHz, 400V/s Op Amps
FEATURES
s s s s s s s s s s
DESCRIPTIO
45MHz Gain-Bandwidth 400V/s Slew Rate Unity-Gain Stable 7V/mV DC Gain, RL = 500 3mV Maximum Input Offset Voltage 12V Minimum Output Swing into 500 Wide Supply Range: 2.5V to 15V 7mA Supply Current per Amplifier 90ns Settling Time to 0.1%, 10V Step Drives All Capacitive Loads
APPLICATI
s s s s s s
S
The LT1208/LT1209 are dual and quad very high speed operational amplifiers with excellent DC performance. The LT1208/LT1209 feature reduced input offset voltage and higher DC gain than devices with comparable bandwidth and slew rate. Each amplifier is a single gain stage with outstanding settling characteristics. The fast settling time makes the circuit an ideal choice for data acquisition systems. Each output is capable of driving a 500 load to 12V with 15V supplies and a 150 load to 3V on 5V supplies. The amplifiers are also capable of driving large capacitive loads which make them useful in buffer or cable driver applications. The LT1208/LT1209 are members of a family of fast, high performance amplifiers that employ Linear Technology Corporation's advanced bipolar complementary processing.
Wideband Amplifiers Buffers Active Filters Video and RF Amplification Cable Drivers Data Acquisition Systems
TYPICAL APPLICATI
1MHz, 4th Order Butterworth Filter
909 1.1k 47pF
VIN 220pF
470pF
+
-
+
-
909
2.67k
1/2 LT1208
1.1k
2.21k
22pF 1/2 LT1208 VOUT
1208/09 TA01
U
Inverter Pulse Response
1208/09 TA02
UO
UO
1
LT1208/LT1209 ABSOLUTE AXI U RATI GS
Maximum Junction Temperature Plastic Package ............................................. 150C Storage Temperature Range ................ - 65C to 150C Lead Temperature (Soldering, 10 sec)................. 300C Total Supply Voltage (V + to V -) .............................. 36V Differential Input Voltage ........................................ 6V Input Voltage ........................................................... VS Output Short-Circuit Duration (Note 1) ........... Indefinite Operating Temperature Range LT1208C/LT1209C .......................... - 40C to 85C
PACKAGE/ORDER I FOR ATIO
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V
-
8 A B 7 6 5
V+ OUT B -IN B +IN B
ORDER PART NUMBER LT1208CN8
4
N8 PACKAGE 8-LEAD PLASTIC DIP
TJMAX = 150C, JA = 100C/W CONTACT FACTORY FOR MILITARY/883B PARTS
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V+ 4 +IN B 5 -IN B 6 OUT B 7 B C A D 14 OUT D 13 -IN D 12 +IN D 11 V-
ORDER PART NUMBER LT1209CN
10 +IN C 9 8 -IN C OUT C
N PACKAGE 14-LEAD PLASTIC DIP
TJMAX = 150C, JA = 70C/W
ELECTRICAL CHARACTERISTICS
SYMBOL VOS PARAMETER Input Offset Voltage
VS = 15V, TA = 25C, RL = 1k, VCM = 0V, unless otherwise noted.
MIN
q
CONDITIONS VS = 5V (Note 2) 0C to 70C VS = 15V (Note 2) 0C to 70C VS = 5V and VS = 15V 0C to 70C VS = 5V and VS = 15V 0C to 70C f = 10kHz f = 10kHz
IOS IB en in
Input VOS Drift Input Offset Current Input Bias Current Input Noise Voltage Input Noise Current
2
U
U
W
WW
U
W
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V- 4 B 5 +IN B A 6 8 7 V+ OUT B -IN B
ORDER PART NUMBER LT1208CS8 S8 PART MARKING 1208 ORDER PART NUMBER LT1209CS
S8 PACKAGE 8-LEAD PLASTIC SOIC
TJMAX = 150C, JA = 150C/W
TOP VIEW OUT A 1 -IN A 2 +IN A 3 V+ 4 +IN B 5 -IN B 6 OUT B 7 NC 8 B C A D 16 OUT D 15 -IN D 14 +IN D 13 V - 12 +IN C 11 -IN C 10 OUT C 9 NC
S PACKAGE 16-LEAD PLASTIC SOIC
TJMAX = 150C, JA = 100C/W
TYP 0.5 1.0
MAX 3.0 4.0 5.0 6.0 400 600 8 9
UNITS mV mV mV mV V/C nA nA A A nV/Hz pA/Hz
q
25 100
q
4
q
22 1.1
LT1208/LT1209
ELECTRICAL CHARACTERISTICS
SYMBOL RIN CIN CMRR PSRR PARAMETER Input Resistance Input Capacitance Common-Mode Rejection Ratio Power Supply Rejection Ratio Input Voltage Range AVOL Large-Signal Voltage Gain CONDITIONS VCM = 12V Differential
VS = 15V, TA = 25C, RL = 1k, VCM = 0V, unless otherwise noted.
MIN 20 TYP 40 250 2 98 84 13 3 7 7 3 13.3 3.3 40 40 400 250 6.4 45 34 5 7 30 20 5 7 90 1.30 0.09 1.8 0.1 2.5 -100 7
q
MAX
UNITS M k pF dB dB dB dB V V V/mV V/mV V/mV V/mV V/mV V V mA mA V/s V/s V/s V/s MHz MHz MHz ns ns % % ns ns ns % % Deg Deg dB mA mA
VOUT IOUT SR
Output Swing Output Current Slew Rate
GBW tr, tf
Full Power Bandwidth Gain-Bandwidth Rise Time, Fall Time Overshoot Propagation Delay
ts
Settling Time Differential Gain Differential Phase
RO IS
Output Resistance Crosstalk Supply Current
VS = 15V, VCM = 12V; VS = 5V, VCM = 2.5V, 0C to 70C VS = 5V to 15V 0C to 70C VS = 15V VS = 5V VS = 15V, VOUT = 10V, RL = 500 0C to 70C VS = 5V, VOUT = 2.5V, RL = 500 0C to 70C VS = 5V, VOUT = 2.5V, RL = 150 VS = 15V, RL = 500, 0C to 70C VS = 5V, RL = 150, 0C to 70C VS = 15V, VOUT = 12V, 0C to 70C VS = 5V, VOUT = 3V, 0C to 70C VS = 15V, AVCL = - 2, (Note 3) 0C to 70C VS = 5V, AVCL = - 2, (Note 3) 0C to 70C 10V Peak, (Note 4) VS = 15V, f = 1MHz VS = 5V, f = 1MHz VS = 15V, AVCL = 1, 10% to 90%, 0.1V VS = 5V, AVCL = 1, 10% to 90%, 0.1V VS = 15V, AVCL = 1, 0.1V VS = 5V, AVCL = 1, 0.1V VS = 15V, 50% VIN to 50%VOUT VS = 5V, 50% VIN to 50%VOUT VS = 15V, 10V Step, VS = 5V, 5V Step, 0.1% f = 3.58MHz, RL = 150 f = 3.58MHz, RL = 1k f = 3.58MHz, RL = 150 f = 3.58MHz, RL = 1k AVCL = 1, f = 1MHz VOUT = 10V, RL = 500 Each Amplifier, VS = 5V and VS = 15V 0C to 70C
q q
q q q q q q q q
86 83 76 75 12 2.5 3.3 2.5 2.5 2.0 12.0 3.0 24 20 250 200 150 130
- 94 9 10.5
The q denotes the specifications which apply over the full operating temperature range. Note 1: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted indefinitely. Note 2: Input offset voltage is tested with automated test equipment and is exclusive of warm-up drift.
Note 3: Slew rate is measured in a gain of -2. For 15V supplies measure between 10V on the output with 6V on the input. For 5V supplies measure between 2V on the output with 1.75V on the input. Note 4: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2VP.
3
LT1208/LT1209
TYPICAL PERFOR A CE CHARACTERISTICS
Input Common-Mode Range vs Supply Voltage
20 12 TA = 25C VOS < 1mV
SUPPLY CURRENT (mA)
MAGNITUDE OF INPUT VOLTAGE (V)
OUTPUT VOLTAGE SWING (V)
15
10 +VCM 5 -VCM
0 0 5 10 15 SUPPLY VOLTAGE (V) 20
1208/09 G01
Output Voltage Swing vs Resistive Load
30
OUTPUT VOLTAGE SWING (VP-P)
25 20 15 10 5 0 10
TA = 25C VOS = 30mV INPUT BIAS CURRENT (A)
VS = 15V
OPEN-LOOP GAIN (dB)
VS = 5V
100 1k LOAD RESISTANCE ()
Input Bias Current vs Temperature
5.00 4.75 VS = 15V IB+ + IB- IB =
2
OUTPUT SHORT-CIRCUIT CURRENT (mA)
INPUT VOLTAGE NOISE (nV/Hz)
INPUT BIAS CURRENT (A)
4.50 4.25 4.00 3.75 3.50 -50 -25
25 75 0 50 TEMPERATURE (C)
4
UW
10k
1208/09 G04
Supply Current vs Supply Voltage and Temperature
20 125C
Output Voltage Swing vs Supply Voltage
TA = 25C RL = 500 VOS = 30mV 15 +VSW 10 -VSW 5
10 8 6
25C
-55C 4 2 0 0 5 10 15 SUPPLY VOLTAGE (V) 20
1208/09 G02
0 0 5 10 15 SUPPLY VOLTAGE (V) 20
1208/09 G03
Input Bias Current vs Input Common-Mode Voltage
5.0 VS = 15V TA = 25C I + + IB - IB = B
2
Open-Loop Gain vs Resistive Load
100 TA = 25C 90
4.5
80
VS = 15V
4.0
70
VS = 5V
3.5
60
3.0 -15
50
-10 -5 0 5 10 INPUT COMMON-MODE VOLTAGE (V)
15
10
100 1k LOAD RESISTANCE ()
10k
1208/09 G06
1208/09 G05
Output Short-Circuit Current vs Temperature
55 VS = 5V 50 45 40 SOURCE 35 30 25 -50 SINK
Input Noise Spectral Density
10000 VS = 15V TA = 25C AV = 101 RS = 100k 10 100
INPUT CURRENT NOISE (pA/Hz)
1000
in
100
en
1
100
125
-25
25 75 0 50 TEMPERATURE (C)
100
125
10 10 100 1k 10k FREQUENCY (Hz)
0.1 100k
1208/09 G09
1208/09 G07
1208/09 G08
LT1208/LT1209
TYPICAL PERFOR A CE CHARACTERISTICS
Crosstalk vs Frequency
-20 -30 -40
COMMON-MODE REJECTION RATIO (dB)
POWER SUPPLY REJECTION RATIO (dB)
TA = 25C VIN = 0dBm AV = 1
CROSSTALK (dB)
-50 -60 -70 -80 -90 -100 -110 -120 100k VS = 5V RL = 500 VS = 15V RL = 1k
1M 10M FREQUENCY (Hz)
Voltage Gain and Phase vs Frequency
80 100
10 8
VOLTAGE GAIN (dB)
OUTPUT SWING (V)
VS = 15V 40 60
VOLTAGE MAGNITUDE (dB)
60
VS = 5V
20
VS = 5V VS = 15V
0 TA = 25C -20 100 1k 1M 10k 100k FREQUENCY (Hz) 10M
Closed-Loop Output Impedance vs Frequency
100 VS = 15V TA = 25C AV = +1
OUTPUT IMPEDANCE ()
10
GAIN-BANDWIDTH (MHz)
SLEW RATE (V/s)
1
0.1
0.01 10k
100k
1M 10M FREQUENCY (Hz)
UW
1208/09 G10
Power Supply Rejection Ratio vs Frequency
100 VS = 15V TA = 25C 80 +PSRR 60 -PSRR 40 120 100 80 60 40 20 0
Common-Mode Rejection Ratio vs Frequency
VS = 15V TA = 25C
20
100M
0 100
1k
10k 100k 1M FREQUENCY (Hz)
10M
100M
1k
10k
100k 1M FREQUENCY (Hz)
10M
100M
1208/09 G11
1208/09 G12
Output Swing vs Settling Time
10 8 6 4 2 0 -2 -4 -6 -8 -10
0 25 75 100 50 SETTLING TIME (ns) 125
1208/09 G14
Frequency Response vs Capacitive Load
VS = 15V TA = 25C AV = -1 C = 100pF C = 50pF
80
PHASE MARGIN (DEG)
6 4 2 0 -2 -4 -6 -8 VS = 15V TA = 25C 10mV SETTLING AV = 1 AV = -1 AV = 1 AV = -1
40
C=0 C = 500pF C = 1000pF
20
0 100M
-10
1M
10M FREQUENCY (Hz)
100M
1208/09 G15
1208/09 B13
Gain-Bandwidth vs Temperature
48 VS = 15V 47 46 45 44 43 42 -50 450 400 500
Slew Rate vs Temperature
VS = 15V AV = -2 -SR +SR 350 300 250 200 -50
100M
1208/09 G16
-25
25 75 0 50 TEMPERATURE (C)
100
125
-25
25 75 0 50 TEMPERATURE (C)
100
125
1208/09 G17
1208/09 G18
5
LT1208/LT1209
TYPICAL PERFOR A CE CHARACTERISTICS
Gain-Bandwidth and Phase Margin vs Supply Voltage
60 TA = 25C 55 PHASE MARGIN
GAIN-BANDWIDTH (MHz)
50 45 40 35 30 GAIN BANDWIDTH 25 20 0 10 5 15 SUPPLY VOLTAGE (V) 20
1208/09 G19
58 56 54 52 50 48 46
500 PHASE MARGIN (DEG)
400
-SR
+SR
300
TOTAL HARMONIC DISTORTION (%)
SLEW RATE (V/s)
APPLICATI
S I FOR ATIO
Layout and Passive Components As with any high speed operational amplifier, care must be taken in board layout in order to obtain maximum performance. Key layout issues include: use of a ground plane, minimization of stray capacitance at the input pins, short lead lengths, RF-quality bypass capacitors located close to the device (typically 0.01F to 0.1F), and use of low ESR bypass capacitors for high drive current applications (typically 1F to 10F tantalum). Sockets should be avoided when maximum frequency performance is required, although low profile sockets can provide reasonable performance up to 50MHz. For more details see Design Note 50. The parallel combination of the feedback resistor and gain setting resistor on the inverting input combine with the input capacitance to form a pole which can cause peaking. If feedback resistors greater than 5k are used, a parallel capacitor of value CF RG x CIN/RF should be used to cancel the input pole and optimize dynamic performance. For unity-gain applications where a large feedback resistor is used, CF should be greater than or equal to CIN.
6
U
W
UW
Slew Rate vs Supply Voltage
62 60
600 TA = 25C AV = -1
Total Harmonic Distortion vs Frequency
0.01 TA = 25C VOUT = 3VRMS RL = 500
200
AV = -1 AV = 1
100
0
10 5 15 SUPPLY VOLTAGE (V)
20
1208/09 G20
0.001 10
100
1k 10k FREQUENCY (Hz)
100k
1208/09 G21
U
UO
Capacitive Loading The LT1208/LT1209 amplifiers are stable with capacitive loads. This is accomplished by sensing the load induced output pole and adding compensation at the amplifier gain node. As the capacitive load increases, both the bandwidth and phase margin decrease so there will be peaking in the frequency domain and in the transient response. The photo of the small-signal response with 1000pF load shows 50% peaking. The large-signal response with a 10,000pF load shows the output slew rate being limited by the short-circuit current. To reduce peaking with capacitive loads, insert a small decoupling resistor between the output and the load, and add a capacitor between the output and inverting input to provide an AC feedback path. Coaxial cable can be driven directly, but for best pulse fidelity the cable should be doubly terminated with a resistor in series with the output.
LT1208/LT1209
APPLICATI
S I FOR ATIO
Small-Signal Capacitive Loading
AV = -1 CL = 1000pF
1208/09 AI01
Large-Signal Capacitive Loading Small-Signal Transient Response
AV = 1 CL = 10,000pF
1208/09 AI02
Input Considerations Resistors in series with the inputs are recommended for the LT1208/LT1209 in applications where the differential input voltage exceeds 6V continuously or on a transient basis. An example would be in noninverting configurations with high input slew rates or when driving heavy capacitive loads. The use of balanced source resistance at each input is recommended for applications where DC accuracy must be maximized. Transient Response The LT1208/LT1209 gain-bandwidth is 45MHz when measured at 100kHz. The actual frequency response in unitygain is considerably higher than 45MHz due to peaking
AV = -1
U
caused by a second pole beyond the unity-gain crossover. This is reflected in the 50 phase margin and shows up as overshoot in the unity-gain small-signal transient response. Higher noise gain configurations exhibit less overshoot as seen in the inverting gain of one response. The large-signal response in both inverting and noninverting gain show symmetrical slewing characteristics. Normally the noninverting response has a much faster rising edge due to the rapid change in input commonmode voltage which affects the tail current of the input differential pair. Slew enhancement circuitry has been added to the LT1208/LT1209 so that the falling edge slew rate is balanced.
AV = 1
1208/09 AI03
W
U
UO
Small-Signal Transient Response
1208/09 AI04
7
LT1208/LT1209
APPLICATI
S I FOR ATIO
Large-Signal Transient Response
AV = 1
1208/09 AI04
Large-Signal Transient Response
AV = -1
1208/09 AI06
Low Voltage Operation The LT1208/LT1209 are functional at room temperature with only 3V of total supply voltage. Under this condition, however, the undistorted output swing is only 0.8VP-P . A more realistic condition is operation at 2.5V supplies (or 5V and ground). Under these conditions, at room temperature, the typical input common-mode range is 1.9V to -1.3V (for a VOS change of 1mV), and a 5MHz, 2VP-P sine wave can be faithfully reproduced. With 5V total supply voltage the gain-bandwidth is reduced to 26MHz and the slew rate is reduced to 135V/s.
8
U
Power Dissipation The LT1208/LT1209 combine high speed and large output current drive in small packages. Because of the wide supply voltage range, it is possible to exceed the maximum junction temperature under certain conditions. Maximum junction temperature (TJ) is calculated from the ambient temperature (TA) and power dissipation (PD) as follows: LT1208CN8: LT1208CS8: LT1209CN: LT1209CS: TJ = TA + (PD x 100C/W) TJ = TA + (PD x 150C/W) TJ = TA + (PD x 70C/W) TJ = TA + (PD x 100C/W) Maximum power dissipation occurs at the maximum supply current and when the output voltage is at 1/2 of either supply voltage (or the maximum swing if less than 1/2 supply voltage). For each amplifier PDMAX is as follows:
W
U
UO
PDMAX = (V + - V -)(ISMAX) +
(0.5V+)2 RL
Example: LT1208 in S8 at 70C, VS = 10V, RL = 500
PDMAX = (20V)(10.5mA) + (5V)2 = 260mW 500
TJ = 70C + (2 x 260mW)(150C/W) = 148C
DAC Current-to-Voltage Converter The wide bandwidth, high slew rate and fast settling time of the LT1208/LT1209 make them well-suited for currentto-voltage conversion after current output D/A converters. A typical application with a DAC-08 type converter (fullscale output of 2mA) uses a 5k feedback resistor. A 7pF compensation capacitor across the feedback resistor is used to null the pole at the inverting input caused by the DAC output capacitance. The combination of the LT1208/ LT1209 and DAC settles to less than 40mV (1LSB) in 140ns for a 10V step.
LT1208/LT1209
TYPICAL APPLICATI
DAC Current-to-Voltage Converter
7pF
VIN
5k
DAC-08 TYPE
-
1/2 LT1208 VOUT
R2 1k
+
0.1F 5k 1 LSB SETTLING = 140ns
1208/09 TA04
VIN
UO
R1 10k VIN AV =
1k
S
Cable Driving
+
1/2 LT1208
R3 75
75 CABLE VOUT R4 75
-
R1 1k
1208/09 TA06
Instrumentation Amplifier
R5 220 R2 1k R4 10k
-
1/2 LT1208
R3 1k
-
1/2 LT1208 VOUT
- +
+
+
+ ( R2 + R3 ) + R2R5R3 R1 R4 = 102
1208/09 TA03
R4 1+ 1 R3 2
TRIM R5 FOR GAIN TRIM R1 FOR COMMON-MODE REJECTION BW = 430kHz
Full-Wave Rectifier
1N4148
-
1/2 LT1208
+
1k 1k
1k 1N4148 500
-
1/2 LT1208 VOUT
+
1208/09 TA05
9
LT1208/LT1209
SI PLIFIED SCHE ATIC
V+
+IN
V-
1208/09 SS
PACKAGE DESCRIPTIO
0.300 - 0.320 (7.620 - 8.128)
0.009 - 0.015 (0.229 - 0.381)
0.065 (1.651) TYP 0.125 (3.175) MIN 0.020 (0.508) MIN
(
+0.025 0.325 -0.015 +0.635 8.255 -0.381
)
0.045 0.015 (1.143 0.381) 0.100 0.010 (2.540 0.254)
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0.016 - 0.050 0.406 - 1.270
0.053 - 0.069 (1.346 - 1.752) 0.004 - 0.010 (0.101 - 0.254) 0.228 - 0.244 (5.791 - 6.197)
0- 8 TYP
10
U
W
W
BIAS 1
-IN
BIAS 2 OUT
Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead Plastic DIP
0.045 - 0.065 (1.143 - 1.651)
0.130 0.005 (3.302 0.127)
0.400 (10.160) MAX 8 7 6 5
0.250 0.010 (6.350 0.254)
1
2
3
4
0.018 0.003 (0.457 0.076)
N8 0392
S8 Package 8-Lead Plastic SOIC
8
0.189 - 0.197 (4.801 - 5.004) 7 6 5
0.014 - 0.019 (0.355 - 0.483)
0.050 (1.270) BSC
0.150 - 0.157 (3.810 - 3.988)
1
2
3
4
SO8 0392
LT1208/LT1209
PACKAGE DESCRIPTIO U
Dimensions in inches (millimeters) unless otherwise noted. N Package 14-Lead Plastic DIP
0.770 (19.558) MAX 14 13 12 11 10 9 8
0.260 0.010 (6.604 0.254)
1
2
3
4
5
6
7
0.300 - 0.325 (7.620 - 8.255)
0.130 0.005 (3.302 0.127) 0.015 (0.380) MIN
0.045 - 0.065 (1.143 - 1.651)
0.009 - 0.015 (0.229 - 0.381) +0.025 0.325 -0.015 8.255 +0.635 -0.381
0.065 (1.651) TYP 0.125 (3.175) MIN 0.075 0.015 (1.905 0.381) 0.100 0.010 (2.540 0.254) 0.018 0.003 (0.457 0.076)
(
)
N14 0392
S Package 16-Lead Plastic SOIC
0.386 - 0.394* (9.804 - 10.008) 16 15 14 13 12 11 10 9
0.228 - 0.244 (5.791 - 6.197)
0.150 - 0.157* (3.810 - 3.988)
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254)
1 0.053 - 0.069 (1.346 - 1.752)
2
3
4
5
6
7
8
0.004 - 0.010 (0.101 - 0.254)
0 - 8 TYP
0.016 - 0.050 0.406 - 1.270
0.014 - 0.019 (0.355 - 0.483)
0.050 (1.270) TYP
SO16 0392
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED 0.006 INCH (0.15mm).
Information furnished by Linear Technology Corporation is believed to be accurate and reliable. However, no responsibility is assumed for its use. Linear Technology Corporation makes no representation that the interconnection of its circuits as described herein will not infringe on existing patent rights.
11
LT1208/LT1209
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation One Oxford Valley 2300 E. Lincoln Hwy.,Suite 306 Langhorne, PA 19047 Phone: (215) 757-8578 FAX: (215) 757-5631 Linear Technology Corporation 266 Lowell St., Suite B-8 Wilmington, MA 01887 Phone: (508) 658-3881 FAX: (508) 658-2701 SOUTHEAST REGION Linear Technology Corporation 17060 Dallas Parkway Suite 208 Dallas, TX 75248 Phone: (214) 733-3071 FAX: (214) 380-5138 CENTRAL REGION Linear Technology Corporation Chesapeake Square 229 Mitchell Court, Suite A-25 Addison, IL 60101 Phone: (708) 620-6910 FAX: (708) 620-6977 SOUTHWEST REGION Linear Technology Corporation 22141 Ventura Blvd. Suite 206 Woodland Hills, CA 91364 Phone: (818) 703-0835 FAX: (818) 703-0517 NORTHWEST REGION Linear Technology Corporation 782 Sycamore Dr. Milpitas, CA 95035 Phone: (408) 428-2050 FAX: (408) 432-6331
International Sales Offices
FRANCE Linear Technology S.A.R.L. Immeuble "Le Quartz" 58 Chemin de la Justice 92290 Chatenay Malabry France Phone: 33-1-41079555 FAX: 33-1-46314613 GERMANY Linear Techonolgy GMBH Untere Hauptstr. 9 D-8057 Eching Germany Phone: 49-89-3197410 FAX: 49-89-3194821 JAPAN Linear Technology KK 5F YZ Bldg. Iidabashi, Chiyoda-Ku Tokyo, 102 Japan Phone: 81-3-3237-7891 FAX: 81-3-3237-8010 KOREA Linear Technology Korea Branch Namsong Building, #505 Itaewon-Dong 260-199 Yongsan-Ku, Seoul Korea Phone: 82-2-792-1617 FAX: 82-2-792-1619 SINGAPORE Linear Technology Pte. Ltd. 101 Boon Keng Road #02-15 Kallang Ind. Estates Singapore 1233 Phone: 65-293-5322 FAX: 65-292-0398 TAIWAN Linear Technology Corporation Rm. 801, No. 46, Sec. 2 Chung Shan N. Rd. Taipei, Taiwan, R.O.C. Phone: 886-2-521-7575 FAX: 886-2-562-2285 UNITED KINGDOM Linear Technology (UK) Ltd. The Coliseum, Riverside Way Camberley, Surrey GU15 3YL United Kingdom Phone: 44-276-677676 FAX: 44-276-64851
World Headquarters
Linear Technology Corporation 1630 McCarthy Blvd. Milpitas, CA 95035-7487 Phone: (408) 432-1900 FAX: (408) 434-0507
03/10/93
12
Linear Technology Corporation
1630 McCarthy Blvd., Milpitas, CA 95035-7487
(408) 432-1900 q FAX: (408) 434-0507 q TELEX: 499-3977
LT/GP 0493 10K REV 0
(c) LINEAR TECHNOLOGY CORPORATION 1993

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