LT1222CN8

LT1222 500MHz, 3nV/√Hz, AV ≥ 10 Operational Amplifier FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO Gain-Bandwidth: 500MHz Gain of 10 Stable Uncompensated Slew Rate: 200V/μs Input Noise Voltage: 3nV/√Hz C-LoadTM Op Amp Drives Capacitive Loads External Compensation Pin Maximum Input Offset Voltage: 300μV Maximum Input Bias Current: 300nA Maximum Input Offset Current: 300nA Minimum Output Swing Into 500Ω: ± 12V Minimum DC Gain: 100V/mV, RL = 500Ω Settling Time to 0.1%: 75ns, 10V Step Settling Time to 0.01%: 120ns, 10V Step Differential Gain: 0.4%, AV = 2, RL = 150Ω Differential Phase: 0.1°, AV = 2, RL = 150Ω The LT®1222 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. LT, LTC and LTM are registered trademarks of Linear Technology Corporation. C-Load is a trademark of Linear Technology Corporation. APPLICATIO S ■ ■ ■ ■ ■ ■ Wideband Amplifiers Buffers Active Filters Video and RF Amplification Cable Drivers 8-, 10-, 12-Bit Data Acquisition Systems TYPICAL APPLICATIO AV = 10 with Output Clamping 15V 3k AV = – 1, CC = 30pF Pulse Response 1N5711 3 5 6 1N5711 1N4148 0.1μF VIN + – LT1222 2 ⎥ VOUT⎥ ≤ 0.5V 909Ω 100Ω LT1222 • TA01 RF = RG = 1k VS = ±15V VIN = 100mV f = 5MHz U LT1222 • TA02 U U 1222fc 1 LT1222 ABSOLUTE AXI U RATI GS (Note 1) Operating Temperature Range LT1222C ........................................... – 40°C TO 85°C LT1222I ...............................................–40°C to 85°C LT1222M (OBSOLETE) ............... – 55°C to 125°C Maximum Junction Temperature (See Below) Plastic Package ............................................... 150°C Ceramic Package (OBSOLETE) .................. 175°C Storage Temperature Range ................ – 65°C to 150°C Lead Temperature (Soldering, 10 sec)................. 300°C Total Supply Voltage (V + to V –) ............................. 36V Differential Input Voltage ........................................ ± 6V Input Voltage .......................................................... ± VS Output Short-Circuit Duration (Note 2) ........... Indefinite Specified Temperature Range LT1222C (Note 3) ................................... 0°C to 70°C LT1222I ...............................................–40°C to 85°C LT1222M (OBSOLETE) ............... – 55°C to 125°C PACKAGE/ORDER I FOR ATIO TOP VIEW NULL 8 NULL 1 –IN 2 +IN 3 7 V+ 6 VOUT 5 COMP 4 ORDER PART NUMBER SPECIAL ORDER CONSULT FACTORY V– H PACKAGE 8-LEAD TO-5 METAL CAN TJMAX = 175°C, θJA = 150°C/W OBSOLETE PACKAGE Consider the N8 or S8 Packages for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. ELECTRICAL CHARACTERISTICS TA = 25°C, VS = ±15V, VCM = 0V, unless otherwise specified. 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 Input 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 CONDITIONS (Note 4) 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 μV nA nA nV/√Hz pA/√Hz MΩ kΩ pF V V dB dB V/mV ±V mA V/μs MHz MHz 1222fc f = 10kHz f = 10kHz VCM = ± 12V Differential CMRR PSRR AVOL VOUT IOUT SR GBW VCM = ± 12V VS = ± 5V to ± 15V VOUT = ± 10V, RL = 500Ω RL = 500Ω VOUT = ± 12V (Note 5) 10V Peak (Note 6) f = 1MHz 2 U U W WW U W TOP VIEW NULL 1 –IN 2 +IN 3 V– 4 8 7 6 5 NULL V+ VOUT COMP S8 PACKAGE N8 PACKAGE 8-LEAD PLASTIC DIP 8-LEAD PLASTIC SOIC TJMAX = 150°C, θJA = 130°C/W (N) TJMAX = 150°C, θJA = 190°C/W (S) J8 PACKAGE 8-LEAD CERAMIC DIP TJMAX = 175°C, θJA = 100°C/W (J) ORDER PART NUMBER LT1222CN8 LT1222CS8 LT1222IS8 S8 PART MARKING 1222 1222I ORDER PART NUMBER LT1222MJ8 Consider the N8 or S8 Packages for Alternate Source OBSOLETE PACKAGE 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 = 25°C, VCM = 0V, unless otherwise specified. MIN TYP 2.4 43 5.2 75 120 0.40 0.15 0.10 0.01 0.1 8 MAX UNITS ns % ns ns ns % % DEG DEG Ω 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 = 150Ω (Note 7) AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 7) AV = 2, CC = 50pF, f = 3.58MHz, RL = 150Ω (Note 7) AV = 10, CC = 0pF, f = 3.58MHz, RL = 1k (Note 7) AV = 10, f = 1MHz 10.5 The ● denotes the specifications which apply over the temperature range 0°C ≤ TA ≤ 70°C, otherwise specifications are at TA = 25°C. VS = ± 15V, 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 4) MIN ● ● ● ● VCM = ± 12V VS = ± 5V to ± 15V VOUT = ± 10V, RL = 500Ω RL = 500Ω VOUT = ± 12V (Note 5) ● ● ● ● ● ● ● 100 98 100 12 24 150 TYP 100 5 100 100 120 110 200 13 26 200 8 MAX 600 400 400 11 UNITS μV μV/°C nA nA dB dB V/mV ±V mA V/μs mA The ● denotes the specifications which apply over the temperature range – 55°C ≤ TA ≤ 125°C for LT1222M, –40°C ≤ TA ≤ 85°C for LT1222I, otherwise specifications are at TA = 25°C. VS = ± 15V, 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 4) MIN ● ● ● ● VCM = ± 12V VS = ± 5V to ± 15V VOUT = ± 10V, RL = 500Ω RL = 500Ω RL = 1k VOUT = ± 10V VOUT = ± 12V (Note 5) ● ● ● ● ● ● ● ● ● 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 11 UNITS μV μV/°C nA nA dB dB V/mV ±V ±V mA mA V/μs mA Note 1: Stresses beyond those listed under Absolute Maximum Ratings may cause permanent damage to the device. Exposure to any Absolute Maximum Rating condition for extended periods may affect device reliability and lifetime. Note 2: A heat sink may be required when the output is shorted indefinitely. Note 3: The LT1222C is guaranteed to meet specified performance from 0°C to 70°C and is designed, characterized and expected to meet these extended temperature limits, but is not tested at –40°C and 85°C. The LT1222I is guaranteed to meet the extended temperature limits. Note 4: Input offset voltage is pulse tested and is exclusive of warm-up drift. Note 5: Slew rate is measured between ± 10V on an output swing of ± 12V. Note 6: FPBW = SR/2πVP. Note 7: Differential Gain and Phase are tested with five amps in series. Attenuators of 1/Gain are used as loads. 1222fc 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 = 25°C ΔVOS = 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 TA = 25°C ΔVOS = 30mV INPUT BIAS CURRENT (nA) OPEN-LOOP GAIN (dB) ±15V SUPPLIES ± 5V SUPPLIES 10 100 1k LOAD RESISTANCE (Ω) Output Short-Circuit Current vs Temperature 50 OUTPUT SHORT-CIRCUIT CURRENT (mA) VS = ± 5V 45 40 35 30 25 20 – 50 – 25 INPUT VOLTAGE NOISE (nV/√Hz) POWER SUPPLY REJECTION RATIO (dB) 0 25 75 50 TEMPERATURE (°C) 4 UW LT1222 • TPC01 Supply Current vs Supply Voltage and Temperature 20 Output Voltage Swing vs Supply Voltage TA = 25°C RL = 500Ω ΔVOS = 30mV 15 +VSW 10 – VSW 5 T = 125°C 9 8 7 6 5 0 5 10 15 SUPPLY VOLTAGE (±V) 20 T = 25°C T = – 55°C 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 IB+ IB– VS = ± 15V TA = 25°C Open-Loop Gain vs Resistive Load 120 TA = 25°C 110 VS = ±15V 100 VS = ±5V 90 80 10k LT1222 • TPC04 –500 –15 0 5 –10 –5 10 INPUT COMMON MODE VOLTAGE (V) 15 70 10 100 1k LOAD RESISTANCE (Ω) 10k LT1222 • TPC06 LT1222 • TPC05 Input Noise Spectral Density 1000 VS = ±15V TA = 25°C AV = 101 RS = 100k 100 in 10 100 INPUT CURRENT NOISE (pA/√Hz) 120 100 Power Supply Rejection Ratio vs Frequency VS = ±15V TA = 25°C +PSRR 80 –PSRR 60 40 20 0 100 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 1222fc LT1222 TYPICAL PERFORMANCE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 120 COMMON MODE REJECTION RATIO (dB) 10 100 80 60 40 20 0 1k 10k 1M 100k FREQUENCY (Hz) VS = ±15V TA = 25°C OUTPUT SWING (V) OUTPUT SWING (V) Voltage Gain and Phase vs Frequency 120 VS = ±15V 100 VOLTAGE MAGNITUDE (dB) OUTPUT IMPEDANCE (Ω) VS = ±15V VS = ±5V VS = ±5V VOLTAGE GAIN (dB) 80 60 40 20 TA = 25°C 0 100k 100 10k 1M 1k FREQUENCY (Hz) Gain-Bandwidth vs Temperature 550 VS = ±15V 525 275 250 TOTAL HARMONIC DISTORTION AND NOISE (%) GAIN-BANDWIDTH (MHz) 500 475 450 425 400 – 50 – 25 SLEW RATE (V/μs) 0 75 25 50 TEMPERATURE (°C) UW 10M LT1222 • TPC10 Output Swing and Error vs Settling Time (Noninverting) 10 VS = ±15V TA = 25°C 10mV 1mV 8 6 4 2 0 –2 –4 –6 –8 –10 10mV 1mV Output Swing and Error vs Settling Time (Inverting) 8 6 4 2 0 –2 –4 –6 –8 10mV 1mV VS = ±15V TA = 25°C 10mV 1mV 100M 0 25 75 100 50 SETTLING TIME (ns) –10 125 0 25 75 100 50 SETTLING TIME (ns) 125 LT1222 • TPC11 LT1222 • TPC12 Frequency Response vs Capacitive Load 100 80 30 28 26 24 22 20 18 16 14 12 10M – 20 100M 10 1 10 FREQUENCY (MHz) 100 LT1222 • TPC14 Closed-Loop Output Impedance vs Frequency 10 VS = ±15V TA = 25°C AV = 10 1 VS = ±15V TA = 25°C AV = –10 C = 100pF C = 50pF PHASE MARGIN (DEG) 60 40 20 0 C=0 C = 500pF C = 1000pF 0.1 0.01 0.001 10k 100k 1M 10M FREQUENCY (Hz) 100M LT1222 • TPC15 LT1222 • TPC13 Slew Rate vs Temperature 0.01 VS = ±15V AV = –10 CC = 0 (SR +) + (SR –) SR = 2 Total Harmonic Distortion vs Frequency VS = ±15V VO = 3VRMS RL = 500Ω 225 200 175 150 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 1222fc 5 LT1222 TYPICAL PERFORMANCE CHARACTERISTICS Small Signal, AV = 10 Large Signal, AV = 10 Large Signal, AV = 10, CL = 10,000pF RF = 909Ω VS = ±15V f = 5MHz RG = 100Ω VIN = 20mV Small Signal, AV = – 10 VS = ±15V f = 5MHz RF = 1k RG = 100Ω (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 0.1μF 8 7 4 0.1μF V– LT1222 • AI01 + – LT1222 2 6 6 U W UW LT1222 • TPC19 LT1222 • TPC22 RF = 909Ω VS = ±15V f = 2MHz RG = 100Ω VIN = 2V LT1222 • TPC20 RF = 909Ω VS = ±15V f = 20kHz RG = 100Ω VIN = 2V LT1222 • TPC21 Large Signal, AV = – 10 Small Signal, AV = – 10, CL = 1,000pF VS = ±15V f = 2MHz RF = 1k RG = 100Ω (75) VIN = 2V LT1222 • TPC23 VS = ±15V f = 500kHz RF = 1k RG = 100Ω (75) VIN = 15mV LT1222 • TPC24 U U 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 (0.01μF to 0.1μF). For high drive current applications use low ESR bypass capacitors (1μF to 10μF 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. 1222fc 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/μs 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., 75Ω) 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 U W U U For frequencies < 10MHz the frequency response of the amplifier is approximately: f = 1/[2π • 53Ω • (CC + 6pF) • (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/μs 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. 1222fc 7 LT1222 TYPICAL APPLICATIONS N VOS Null Loop 150k 1 VIN 150k + LT1222 8 25k LT1220 10k 10k 100pF 25Ω – 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 + – + – U Two Op Amp Instrumemtation Amplifier R5 220Ω R1 10k VOUT AV = 1001 R4 10k R2 1k R3 1k LT1222 VOUT W W 1222fc LT1222 PACKAGE DESCRIPTION H Package 8-Lead TO-5 Metal Can (.200 Inch PCD) (Reference LTC DWG # 05-08-1320) 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 0.010 – 0.045* (0.254 – 1.143) 0.016 – 0.021** (0.406 – 0.533) *LEAD DIAMETER IS UNCONTROLLED BETWEEN THE REFERENCE PLANE AND 0.045" BELOW THE REFERENCE PLANE 0.016 – 0.024 **FOR SOLDER DIP LEAD FINISH, LEAD DIAMETER IS (0.406 – 0.610) 0.165 – 0.185 (4.191 – 4.699) REFERENCE PLANE 0.500 – 0.750 (12.700 – 19.050) 0.110 – 0.160 (2.794 – 4.064) INSULATING STANDOFF SEATING PLANE 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) NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS U 45°TYP 0.028 – 0.034 (0.711 – 0.864) 0.027 – 0.045 (0.686 – 1.143) PIN 1 0.200 (5.080) TYP H8(TO-5) 0.200 PCD 1197 J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) 0.005 (0.127) MIN 0.405 (10.287) MAX 8 7 6 5 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 – 0.065 (1.143 – 1.651) 0.014 – 0.026 (0.360 – 0.660) 0.100 (2.54) BSC 0.125 3.175 MIN J8 1298 OBSOLETE PACKAGES 1222fc 9 LT1222 PACKAGE DESCRIPTION U N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .400* (10.160) MAX 8 7 6 5 .255 ± .015* (6.477 ± 0.381) 1 .300 – .325 (7.620 – 8.255) 2 3 4 .130 ± .005 (3.302 ± 0.127) .045 – .065 (1.143 – 1.651) .008 – .015 (0.203 – 0.381) +.035 .325 –.015 8.255 +0.889 –0.381 .065 (1.651) TYP .120 (3.048) .020 MIN (0.508) MIN .018 ± .003 (0.457 ± 0.076) N8 1002 ( ) .100 (2.54) BSC INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) NOTE: 1. DIMENSIONS ARE 1222fc 10 LT1222 PACKAGE DESCRIPTION U S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .045 ±.005 .050 BSC 8 .189 – .197 (4.801 – 5.004) NOTE 3 7 6 5 .245 MIN .160 ±.005 .228 – .244 (5.791 – 6.197) .150 – .157 (3.810 – 3.988) NOTE 3 .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT .010 – .020 × 45° (0.254 – 0.508) .008 – .010 (0.203 – 0.254) 0°– 8° TYP 1 2 3 4 .053 – .069 (1.346 – 1.752) .004 – .010 (0.101 – 0.254) .016 – .050 (0.406 – 1.270) NOTE: 1. DIMENSIONS IN INCHES (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .006" (0.15mm) .014 – .019 (0.355 – 0.483) TYP .050 (1.270) BSC SO8 0303 1222fc 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 LT1222 RELATED PARTS PART NUMBER LT1220 LT1221 DESCRIPTION 45MHz, 250V/μs Amplifier 150MHz, 250V/μs Amplifier COMMENTS Unity Gain Stable Version of the LT1222 AV ≥ 4 Version of the LT1222 1222fc 12 Linear Technology Corporation 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● LT 0507 REV C • PRINTED IN USA www.linear.com © LINEAR TECHNOLOGY CORPORATION 1992