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LT1222 500MHz, 3nV/Hz, AV 10 Operational Amplifier
FEATURES
s s s s s s s s s s s s s s s
DESCRIPTIO
Gain-Bandwidth: 500MHz Gain of 10 Stable Uncompensated Slew Rate: 200V/s Input Noise Voltage: 3nV/Hz C-LoadTM Op Amp Drives Capacitive Loads External Compensation Pin Maximum Input Offset Voltage: 300V Maximum Input Bias Current: 300nA Maximum Input Offset Current: 300nA Minimum Output Swing Into 500: 12V Minimum DC Gain: 100V/mV, RL = 500 Settling Time to 0.1%: 75ns, 10V Step Settling Time to 0.01%: 120ns, 10V Step Differential Gain: 0.4%, AV = 2, RL = 150 Differential Phase: 0.1, AV = 2, RL = 150
The LT1222 is a low noise, very high speed operational amplifier with superior DC performance. The LT1222 is stable in a noise gain of 10 or greater without compensation, or the part can be externally compensated for lower closed-loop gain at the expense of lower bandwidth and slew rate. It features reduced input offset voltage, lower input bias currents, lower noise and higher DC gain than devices with comparable bandwidth and slew rate. The circuit is a single gain stage that includes proprietary DC gain enhancement circuitry to obtain precision with high speed. The high gain and fast settling time make the circuit an ideal choice for data acquisition systems. The circuit is also capable of driving capacitive loads which makes it useful in buffer or cable driver applications. The compensation node can also be used to clamp the output swing. The LT1222 is a member of a family of fast, high performance amplifiers that employ Linear Technology Corporation's advanced complementary bipolar processing. For unity-gain stable applications the LT1220 can be used, and for gains of 4 or greater the LT1221 can be used.
and LTC are registered trademarks and LT is a trademark of Linear Technology Corporation. C-Load is a trademark of Linear Technology Cortporation.
APPLICATI
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Wideband Amplifiers Buffers Active Filters Video and RF Amplification Cable Drivers 8-, 10-, 12-Bit Data Acquisition Systems
TYPICAL APPLICATION
AV = 10 with Output Clamping
15V 3k
AV = - 1, CC = 30pF Pulse Response
1N5711 3 5 6
1N5711
1N4148
0.1F
VIN
+ -
LT1222 2
VOUT 0.5V
909 100
LT1222 * TA01
RF = RG = 1k VS = 15V
VIN = 100mV f = 5MHz
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LT1222 * TA02
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1
LT1222 ABSOLUTE AXI U RATI GS
Operating Temperature Range LT1222C ........................................... - 40C TO 85C LT1222M ......................................... - 55C to 125C Maximum Junction Temperature (See Below) Plastic Package ............................................... 150C Ceramic Package ............................................. 175C 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 Specified Temperature Range LT1222C (Note 2) ................................... 0C to 70C LT1222M ......................................... - 55C to 125C
PACKAGE/ORDER I FOR ATIO
TOP VIEW NULL 8 NULL 1 -IN 2 +IN 3 7 V+ 6 VOUT 5 NC 4
-
ORDER PART NUMBER SPECIAL ORDER CONSULT FACTORY
V H PACKAGE 8-LEAD TO-5 METAL CAN TJMAX = 175C, JA = 150C/W
Consult factory for Industrial grade parts.
ELECTRICAL CHARACTERISTICS
SYMBOL VOS IOS IB en in RIN CIN PARAMETER Input Offset Voltage Input Offset Current Input Bias Current Input Noise Voltage Input Noise Current Input Resistance Inut Capacitance Input Voltage Range (Positive) Input Voltage Range (Negative) Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Swing Output Current Slew Rate Full Power Bandwidth Gain-Bandwidth
VS = 15V, TA = 25C, VCM = 0V, unless otherwise specified.
MIN TYP 100 100 100 3 2 45 12 2 14 - 13 120 110 200 13 26 200 3.2 500 MAX 300 300 300 UNITS V nA nA nV/Hz pA/Hz M k pF V V dB dB V/mV V mA V/s MHz MHz
CONDITIONS (Note 3)
f = 10kHz f = 10kHz VCM = 12V Differential
CMRR PSRR AVOL VOUT IOUT SR GBW
VCM = 12V VS = 5V to 15V VOUT = 10V, RL = 500 RL = 500 VOUT = 12V (Note 4) 10V Peak (Note 5) f = 1MHz
2
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TOP VIEW NULL 1 -IN 2 +IN 3 V- 4 J8 PACKAGE 8-LEAD CERAMIC DIP 8 7 6 5 NULL V+ VOUT NC
ORDER PART NUMBER LT1222CN8 LT1222MJ8 LT1222CS8 S8 PART MARKING 1222
N8 PACKAGE 8-LEAD PLASTIC DIP
S8 PACKAGE 8-LEAD PLASTIC SOIC TJMAX = 175C, JA = 100C/W (J) TJMAX = 150C, JA = 130C/W (N) TJMAX = 150C, JA = 190C/W (S)
20
12 100 98 100 12 24 150
- 12
LT1222
ELECTRICAL CHARACTERISTICS
SYMBOL tr, tf PARAMETER Rise Time, Fall Time Overshoot Propagation Delay Settling Time Differential Gain Differential Phase RO IS Output Resistance Supply Current
VS = 15V, TA = 25C, VCM = 0V, unless otherwise specified.
MIN TYP 2.4 45 5.2 75 120 0.40 0.15 0.10 0.01 0.1 8 MAX UNITS ns % ns ns ns % % DEG DEG mA
ts
CONDITIONS AV = 10, 10% to 90%, 0.1V AV = 10, 0.1V AV = 10, 50% VIN to 50% VOUT, 0.1V 10V Step, 0.1% 10V Step, 0.01% AV = 2, CC = 50pF, f = 3.58MHz, RL = 150 (Note 6) AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 6) AV = 2, CC = 50pF, f = 3.58MHz, RL = 150 (Note 6) AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 6) AV = 10, f = 1MHz
10.5
VS = 15V, 0C TA 70C, VCM = 0V, unless otherwise specified.
SYMBOL VOS IOS IB CMRR PSRR AVOL VOUT IOUT SR IS PARAMETER Input Offset Voltage Input VOS Drift Input Offset Current Input Bias Current Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Swing Output Current Slew Rate Supply Current CONDITIONS (Note 3) MIN
q q q
VCM = 12V VS = 5V to 15V VOUT = 10V, RL = 500 RL = 500 VOUT = 12V (Note 4)
q q q q q q q
100 98 100 12 24 150
TYP 100 5 100 100 120 110 200 13 26 200 8
MAX 600 400 400
11
UNITS V V/C nA nA dB dB V/mV V mA V/s mA
VS = 15V, - 55C TA 125C, VCM = 0V, unless otherwise specified.
SYMBOL VOS IOS IB CMRR PSRR AVOL VOUT IOUT SR IS PARAMETER Input Offset Voltage Input VOS Drift Input Offset Current Input Bias Current Common-Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain Output Swing Output Current Slew Rate Supply Current CONDITIONS (Note 3) MIN
q q q
VCM = 12V VS = 5V to 15V VOUT = 10V, RL = 500 RL = 500 RL = 1k VOUT = 10V VOUT = 12V (Note 4)
q q q q q q q q q
98 98 50 10 12 20 12 110
TYP 100 5 100 100 120 110 200 13 13 26 13 200 8
MAX 600 800 1000
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UNITS V V/C nA nA dB dB V/mV V V mA mA V/s mA
The q denotes specifications which apply over the full temperature range. Note 1: A heat sink may be required when the output is shorted indefinitely. Note 2: Commercial parts are designed to operate over - 40C to 85C, but are not tested nor guaranteed beyond 0C to 70C. Industrial grade parts specified and tested over - 40C to 85C are available on special request. Consult factory.
Note 3: Input offset voltage is pulse tested and is exclusive of warm-up drift. Note 4: Slew rate is measured between 10V on an output swing of 12V. Note 5: FPBW = SR/2VP. Note 6: Differential Gain and Phase are tested with five amps in series. Attenuators of 1/Gain are used as loads.
3
LT1222 TYPICAL PERFORMANCE CHARACTERISTICS
Input Common-Mode Range vs Supply Voltage
20 11 10 +VCM 10 -VCM 5
SUPPLY CURRENT (mA)
15
MAGNITUDE OF OUTPUT VOLATGE (V)
MAGNITUDE OF INPUT VOLTAGE (V)
TA = 25C VOS = 0.5mV
0 0 5 10 15 SUPPLY VOLTAGE (V) 20
Output Voltage Swing vs Resistive Load
30 OUTPUT VOLTAGE SWING (VP-P) 25 20 15 10 5 0 10 100 1k LOAD RESISTANCE () 10k
LT1222 * TPC04
TA = 25C VOS = 30mV
INPUT BIAS CURRENT (nA)
OPEN-LOOP GAIN (dB)
15V SUPPLIES
5V SUPPLIES
Output Short-Circuit Current vs Temperature
50 OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = 5V 45 40 35 30 25 20 - 50 - 25
POWER SUPPLY REJECTION RATIO (dB)
INPUT VOLTAGE NOISE (nV/Hz)
50 0 25 75 TEMPERATURE (C)
4
UW
LT1222 * TPC01
Supply Current vs Supply Voltage and Temperature
20
Output Voltage Swing vs Supply Voltage
TA = 25C RL = 500 VOS = 30mV 15 +VSW 10 - VSW 5
T = 125C 9 8 7 6 5 0 5 10 15 SUPPLY VOLTAGE (V) 20 T = 25C
T = - 55C
0 0 5 10 15 SUPPLY VOLTAGE (V) 20
LT1222 * TPC02
LT1222 * TPC03
Input Bias Current vs Input Common-Mode Voltage
500 400 300 200 100 0 -100 - 200 - 300 -400 -500 -15 70 0 5 -10 -5 10 INPUT COMMON-MODE VOLTAGE (V) 15 IB+ IB- VS = 15V TA = 25C 110 120
Open-Loop Gain vs Resistive Load
TA = 25C
VS = 15V 100 VS = 5V 90
80
10
100 1k LOAD RESISTANCE ()
10k
LT1222 * TPC06
LT1222 * TPC05
Input Noise Spectral Density
1000 VS = 15V TA = 25C AV = 101 RS = 100k 100 in 10 100
120 100
Power Supply Rejection Ratio vs Frequency
VS = 15V TA = 25C +PSRR 80 -PSRR 60 40 20 0 100
INPUT CURRENT NOISE (pA/Hz)
10
1
en 1 10 100 1k 10k FREQUENCY (Hz) 0.1 100k
100
125
1k
10k 100k 1M FREQUENCY (Hz)
10M
100M
LT1222 * TPC07
LT1222 * TPC08
LT1222 * TPC09
LT1222 TYPICAL PERFORMANCE CHARACTERISTICS
Common-Mode Rejection Ratio vs Frequency
120
COMMON-MODE REJECTION RATIO (dB)
100 80 60 40 20 0 1k 10k 1M 100k FREQUENCY (Hz)
VS = 15V TA = 25C
OUTPUT SWING (V)
OUTPUT SWING (V)
Voltage Gain and Phase vs Frequency
120 VS = 15V 100 VOLTAGE MAGNITUDE (dB) VS = 15V VS = 5V VS = 5V 80 100 30 28 26 24 22 20 18 16 14 12 10M - 20 100M 10
OUTPUT IMPEDANCE ()
VOLTAGE GAIN (dB)
80 60 40 20
TA = 25C 0 100 10k 1M 100k 1k FREQUENCY (Hz)
Gain-Bandwidth vs Temperature
550 VS = 15V 525 275 250
SLEW RATE (V/s)
TOTAL HARMONIC DISTORTION AND NOISE (%)
GAIN-BANDWIDTH (MHz)
500 475 450 425 400 - 50 - 25
0 75 25 50 TEMPERATURE (C)
UW
10M
LT1222 * TPC10
Output Swing and Error vs Settling Time (Noninverting)
10 8 6 4 2 0 -2 -4 -6 -8
100M
10
Output Swing and Error vs Settling Time (Inverting)
8 6 VS = 15V TA = 25C 10mV 1mV
VS = 15V TA = 25C 10mV 1mV
4 2 0 -2 -4 -6 -8 -10
10mV
1mV
10mV
1mV
-10
0
25
75 100 50 SETTLING TIME (ns)
125
0
25
75 100 50 SETTLING TIME (ns)
125
LT1222 * TPC11
LT1222 * TPC12
Frequency Response vs Capacitive Load
10
VS = 15V TA = 25C AV = -10
Closed-Loop Output Impedance vs Frequency
VS = 15V TA = 25C AV = 10 1
C = 100pF C = 50pF
PHASE MARGIN (DEG)
60 40 20 0
C=0 C = 500pF C = 1000pF
0.1
0.01
1
10 FREQUENCY (MHz)
100
LT1222 * TPC14
0.001 10k
100k
1M 10M FREQUENCY (Hz)
100M
LT1222 * TPC15
LT1222 * TPC13
Slew Rate vs Temperature
0.01
Total Harmonic Distortion vs Frequency
VS = 15V VO = 3VRMS RL = 500
225 200 175 150
VS = 15V AV = -10 CC = 0 (SR +) + (SR -) SR = 2
0.001 AV = 10
100
125
125 - 50 - 25
0 25 50 75 TEMPERATURE (C)
100
125
0.0001 10
100
1k 10k FREQUENCY (Hz)
100k
LT1222 * TPC18
LT1222 * TPC16
LT1222 * TPC17
5
LT1222 TYPICAL PERFORMANCE CHARACTERISTICS
Small Signal, AV = 10 Large Signal, AV = 10 Large Signal, AV = 10, CL = 10,000pF
RF = 909 VS = 15V f = 5MHz RG = 100 VIN = 20mV
Small Signal, AV = - 10
VS = 15V f = 5MHz RF = 1k RG = 100 (75) VIN = 20mV
APPLICATIONS INFORMATION
The LT1222 is stable in noise gains of 10 or greater and may be inserted directly into HA2520/2/5, HA2541/2/4, AD817, AD847, EL2020, EL2044 and LM6361 applications, provided that the nulling circuitry is removed and the amplifier configuration has a high enough noise gain. The suggested nulling circuit for the LT1222 is shown in the following figure.
Offset Nulling
V+ 5k 1 3 0.1F 8 7 4 0.1F V-
LT1222 * AI01
+ -
LT1222 2
6
6
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LT1222 * TPC19 LT1222 * TPC22
RF = 909 VS = 15V RG = 100 VIN = 2V
f = 2MHz
LT1222 * TPC20
RF = 909 VS = 15V RG = 100 VIN = 2V
f = 20kHz
LT1222 * TPC21
Large Signal, AV = - 10
Small Signal, AV = - 10, CL = 1,000pF
RF = 1k VS = 15V f = 2MHz RG = 100 (75) VIN = 2V
LT1222 * TPC23
VS = 15V f = 500kHz RF = 1k RG = 100 (75) VIN = 15mV
LT1222 * TPC24
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Layout and Passive Components The LT1222 amplifier is easy to apply and tolerant of less than ideal layouts. For maximum performance (for example, fast settling time) use a ground plane, short lead lengths and RF-quality bypass capacitors (0.01F to 0.1F). For high drive current applications use low ESR bypass capacitors (1F to 10F tantalum). Sockets should be avoided when maximum frequency performance is required. For more details see Design Note 50. Feedback resistors greater than 5k are not recommended because a pole is formed with the input capacitance which can cause peaking or oscillations. Stray capacitance on pin 5 should be minimized. Bias current cancellation circuitry is employed on the inputs of the LT1222 so the input bias current and input offset current have identical specifications. For this reason, matching the impedance on the inputs to reduce bias current errors is not necessary.
LT1222
APPLICATIONS INFORMATION
Output Clamping Access to the internal compensation node at pin 5 allows the output swing of the LT1222 to be clamped. An example is shown on the first page of this data sheet. The compensation node is approximately one diode drop above the output and can source or sink 1.2mA. Back-to-back Schottky diodes clamp pin 5 to a diode drop above ground so the output is clamped to 0.5V (the drop of the Schottkys at 1.2mA). The diode reference is bypassed for good AC response. This circuit is useful for amplifying the voltage at false sum nodes used in settling time measurements. Capacitive Loading The LT1222 is 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. There will be peaking in the frequency domain as shown in the curve of Frequency Response vs Capacitive Load. The small-signal transient response will have more overshoot as shown in the photo of the small-signal response with 1000pF load. The large-signal response with a 10,000pF load shows the output slew rate being limited to 4V/s by the short-circuit current. The LT1222 can drive coaxial cable directly, but for best pulse fidelity a resistor of value equal to the characteristic impedance of the cable (i.e., 75) should be placed in series with the output. The other end of the cable should be terminated with the same value resistor to ground. Compensation The LT1222 has a typical gain-bandwidth product of 500MHz which allows it to have wide bandwidth in high gain configurations (i.e., in a gain of 100, it will have a bandwidth of about 5MHz). For added flexibility the amplifier frequency response may be adjusted by adding capacitance from pin 5 to ground. The compensation capacitor may be used to reduce overshoot, to allow the amplifier to be used in lower noise gains, or simply to reduce bandwidth. Table 1 shows gain and compensation capacitor vresus - 3dB bandwidth, maximum frequency peaking and small-signal overshoot.
Table 1
AV -1 -1 -1 -1 5 5 5 5 10 10 10 10 20 20 20 CC (pF) 30 50 82 150 10 20 30 50 0 5 10 20 0 5 10 f - 3dB (MHz) 99 70 32 13 140 100 34 15 150 111 40 17 82 24 14 Max Peaking (dB) 4.2 0.9 0 0 3.8 0 0 0 9.5 0.2 0 0 0.1 0 0 Overshoot (%) 36 13 0 0 35 5 1 0 45 10 2 0 10 0 0
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For frequencies < 10MHz the frequency response of the amplifier is approximately: f = 1/[2 x 53 x (CC + 6pF) x (Noise Gain)] The slew rate is affected as follows: SR = 1.2mA/(CC + 6pF) An example would be a gain of -10 (noise gain of 11) and CC = 20pF which has 10.5MHz bandwidth and 46V/s slew rate. It should be noted that the LT1222 is not stable in AV = 1 unless CC = 50pF and a 1k resistor is used as the feedback resistor. The 1k and input capacitance increase the noise gain at frequency to aid stability.
7
LT1222
TYPICAL APPLICATIONS N
VOS Null Loop
150k 1 VIN 150k
+
LT1222
8
-
10k 10k 100pF
25k
LT1220
25
-
VIN
+
-
100pF LT1097
LT1222 * TA03
+
GAIN = [R4/R3][1 + (1/2)(R2/R1 + R3/R4) + (R2 + R3)/R5] = 102 TRIM R5 FOR GAIN TRIM R1 FOR COMMON-MODE REJECTION BW = 3MHz LT1222 * TA04
SI PLIFIED SCHE ATIC
V+ 7 NULL 1 8 BIAS 1 COMP 5 6 OUT +IN 3 2 -IN BIAS 2
V- 4
LT1222 * SS
8
+
-
+
-
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Two Op Amp Instrumemtation Amplifier
R5 220 R1 10k
VOUT AV = 1001
R4 10k
R2 1k
R3 1k
LT1222
VOUT
W
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LT1222
PACKAGE DESCRIPTION
0.335 - 0.370 (8.509 - 9.398) DIA 0.305 - 0.335 (7.747 - 8.509) 0.040 (1.016) MAX 0.050 (1.270) MAX GAUGE PLANE 0.165 - 0.185 (4.191 - 4.699) REFERENCE PLANE 0.500 - 0.750 (12.700 - 19.050)
SEATING PLANE 0.010 - 0.045 (0.254 - 1.143) 0.016 - 0.021 (0.406 - 0.533)
CORNER LEADS OPTION (4 PLCS)
0.045 - 0.068 (1.143 - 1.727) FULL LEAD OPTION 0.300 BSC (0.762 BSC)
0.008 - 0.018 (0.203 - 0.457) 0.385 0.025 (9.779 0.635)
NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS.
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Dimensions in inches (millimeters) unless otherwise noted. H8 Package 8-Lead TO-5 Metal Can
45TYP 0.027 - 0.034 (0.686 - 0.864)
0.027 - 0.045 (0.686 - 1.143)
0.200 - 0.230 (5.080 - 5.842) BSC
NOTE: LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND SEATING PLANE.
0.110 - 0.160 (2.794 - 4.064) INSULATING STANDOFF
H8(5) 0592
J8 Package 8-Lead Ceramic Dip
0.405 (10.287) MAX 8 7 6 5
0.005 (0.127) MIN
0.023 - 0.045 (0.584 - 1.143) HALF LEAD OPTION
0.025 (0.635) RAD TYP 1 2 3
0.220 - 0.310 (5.588 - 7.874)
4 0.200 (5.080) MAX 0.015 - 0.060 (0.381 - 1.524)
0 - 15
0.045 - 0.068 (1.143 - 1.727) 0.014 - 0.026 (0.360 - 0.660)
0.125 3.175 0.100 0.010 MIN (2.540 0.254)
J8 0694
9
LT1222
PACKAGE DESCRIPTION
0.300 - 0.325 (7.620 - 8.255)
0.009 - 0.015 (0.229 - 0.381)
(
+0.025 0.325 -0.015 +0.635 8.255 -0.381
)
*THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTURSIONS SHALL NOT EXCEED 0.010 INCH (0.254mm).
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Dimensions in inches (millimeters) unless otherwise noted. N8 Package 8-Lead Plastic Dip
0.400* (10.160) MAX 8 7 6 5
0.255 0.015* (6.477 0.381)
1
2
3
4
0.045 - 0.065 (1.143 - 1.651)
0.130 0.005 (3.302 0.127)
0.065 (1.651) TYP 0.125 (3.175) MIN 0.015 (0.380) MIN
0.045 0.015 (1.143 0.381) 0.100 0.010 (2.540 0.254)
0.018 0.003 (0.457 0.076)
N8 0694
LT1222
PACKAGE DESCRIPTION
0.010 - 0.020 x 45 (0.254 - 0.508) 0.008 - 0.010 (0.203 - 0.254) 0- 8 TYP
0.016 - 0.050 0.406 - 1.270
*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.
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Dimensions in inches (millimeters) unless otherwise noted. S8 Package 8-Lead Plastic SOIC
0.189 - 0.197* (4.801 - 5.004) 8 7 6 5
0.228 - 0.244 (5.791 - 6.197)
0.150 - 0.157* (3.810 - 3.988)
1
2
3
4
0.053 - 0.069 (1.346 - 1.752)
0.004 - 0.010 (0.101 - 0.254)
0.014 - 0.019 (0.355 - 0.483)
0.050 (1.270) BSC
SO8 0294
11
LT1222
U.S. Area Sales Offices
NORTHEAST REGION Linear Technology Corporation 3220 Tillman Drive, Suite 120 Bensalem, PA 19020 Phone: (215) 638-9667 FAX: (215) 638-9764 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-85386 Eching Germany Phone: 49-89-3197410 FAX: 49-89-3194821 JAPAN Linear Technology KK 5F YZ Bldg. 4-4-12 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. 507 Yishun Industrial Park A Singapore 2776 Phone: 65-753-2692 FAX: 65-754-4113 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
0794
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 0894 5K REV A * PRINTED IN USA
(c) LINEAR TECHNOLOGY CORPORATION 1992

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