LT1195 Low Power, High Speed Operational Amplifier U FEATURES ■ ■ ■ ■ ■ ■ ■ ■ ■ ■ DESCRIPTIO The LT®1195 is a video operational amplifier optimized for operation on single 5V and ±5V supplies. Unlike many high speed amplifiers, the LT1195 features high openloop gain, over 75dB, and the ability to drive heavy loads to a full power bandwidth of 8.5 MHz at 6VP-P. The LT1195 has a unity-gain stable bandwidth of 50MHz, a 60° phase margin and consumes only 12mA of supply current, making it extremely easy to use. Gain-Bandwidth Product: 50MHz Unity-Gain Stable Slew Rate: 165V/µs Output Current: ±20mA Low Supply Current: 12mA High Open-Loop Gain: 7.5V/mV Low Cost Single Supply 5V Operation Industry Standard Pinout Output Shutdown Because the LT1195 is a true operational amplifier, it is an ideal choice for wideband signal conditioning, fast integrators, peak detectors, active filters, and applications requiring speed, accuracy, and low cost. U APPLICATIO S ■ ■ ■ ■ ■ The LT1195 is a low power version of the popular LT1190, and is available in 8-pin miniDIPs and SO packages with standard pinouts. The normally unused Pin 5 is used for a shutdown feature that shuts off the output and reduces power dissipation to a mere 15mW. Video Cable Drivers Video Signal Processing Fast Peak Detectors Fast Integrators Video Cable Drivers Pulse Amplifiers , LTC and LT are registered trademarks of Linear Technology Corporation U ■ TYPICAL APPLICATIO Fast Pulse Detector 5V RI 1k VIN RS 50Ω Pulse Detector Response 3 CI 60pF + LT1195 2 – D1 1N5712 7 6 RL 10k 4 CL 1000pF OUTPUT –5V –5V RB 10k –5V D2 1N5712 1195 TA01 INPUT 1195TAO2 1195fa 1 LT1195 W W W AXI U U ABSOLUTE RATI GS U U W PACKAGE/ORDER I FOR ATIO (Note 1) Total Supply Voltage (V+ to V – ) ............................... 18V Differential Input Voltage ......................................... ±6V Input Voltage ........................................................... ±VS Output Short-Circuit Duration (Note 2) ......... Continuous Operating Temperature Range LT1195M (OBSOLETE) ................... –55°C to 125°C LT1195C ................................................ 0°C to 70°C Junction Temperature (Note 3) Plastic Package (CN8, CS8) ............................ 150°C Ceramic Package (CJ8, MJ8) (OBSOLETE) ..... 175°C Storage Temperature Range ................. –65°C to 150°C Lead Temperature (Soldering, 10 sec).................. 300°C ORDER PART NUMBER TOP VIEW BAL 1 8 BAL –IN 2 7 V+ +IN 3 6 OUT V– 4 5 S/D LT1195CN8 LT1195CS8 S8 PART MARKING S8 PACKAGE N8 PACKAGE 8-LEAD PLASTIC SO 8-LEAD PDIP TJMAX = 150°C, θJA = 100°C/ W (N8) TJMAX = 150°C, θJA = 150°C/ W (S8) 1195 ORDER PART NUMBER J8 PACKAGE 8-LEAD CERDIP LT1195MJ8 LT1195CJ8 TJMAX = 150°C, θJA = 100°C/ W (J8) OBSOLETE PACKAGE Consider the N8 or S8 Package for Alternate Source Consult LTC Marketing for parts specified with wider operating temperature ranges. + – 5V ELECTRICAL CHARACTERISTICS V = ±5V, C ≤ 10pF, Pin 5 open circuit, unless otherwise noted. S L SYMBOL VOS PARAMETER Input Offset Voltage IOS IB en in RIN CMRR PSRR AVOL Input Offset Current Input Bias Current Input Noise Voltage Input Noise Current Input Resistance Differential Mode Common Mode Input Capacitance Input Voltage Range Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain VOUT Output Voltage Swing SR FPBW GBW tr1, tf1 tr2, tf2 tPD Slew Rate Full Power Bandwidth Gain-Bandwidth Product Rise Time, Fall Time Rise Time, Fall Time Propagation Delay Overshoot Settling Time Differential Gain Differential Phase CIN tS Diff AV Diff Ph TA = 25°C CONDITIONS J8, N8 Package S8 Package MIN fO = 10kHz fO = 10kHz AV = 1 (Note 4) VCM = –2.5 to 3.5V VS = ±2.375V to ±8V RL = 1k, VOUT = ±3V RL = 150Ω, VOUT = ±3V VS = ±8V, RL = 1k, VOUT = ±5V VS = ±5V, RL = 1k VS = ±8V, RL = 1k AV = –1, RL = 1k (Note 5, 10) VOUT = 6VP-P (Note 6) AV = 50, VOUT = ±1.5V, 20% to 80% (Note 10) AV = 1, VOUT = ±125mV, 10% to 90% AV = 1, VOUT = ±125mV, 50% to 50% AV = 1, VOUT = ±125mV 3V Step, 0.1% (Note 7) RL = 150Ω, AV = 2 (Note 8) RL = 150Ω, AV = 2 (Note 8) LT1195M/C TYP 3.0 3.0 0.2 ±0.5 70 2 230 20 2.2 –2.5 60 60 2.0 0.5 ±3.8 ±6.7 110 125 MAX 8.0 10.0 1.0 ±2.0 3.5 85 85 7.5 1.5 11.0 ±4.0 ±7.0 165 8.75 50 170 3.4 2.5 22 220 1.25 0.86 285 UNITS mV mV µA µA nV√Hz pA√Hz kΩ MΩ pF V dB dB V/mV V/mV V/mV V V V/µs MHz MHz ns ns ns % ns % DEGP-P 1195fa 2 LT1195 + – 5V ELECTRICAL CHARACTERISTICS TA = 25°C VS = ±5V, CL ≤ 10pF, Pin 5 open circuit, unless otherwise noted. SYMBOL IS IS/D tON tOFF PARAMETER Supply Current Shutdown Supply Current Shutdown Pin Current Turn-On Time Turn-Off Time CONDITIONS MIN Pin 5 at V – Pin 5 at V – Pin 5 from V – to Ground, RL = 1k Pin 5 from Ground to V –, RL = 1k LT1195M/C TYP MAX 12 16 0.8 1.5 5 25 160 700 UNITS mA mA µA ns ns LT1195M/C TYP MAX UNITS 5V ELECTRICAL CHARACTERISTICS TA = 25°C + – VS = 5V, VS , = OV, VCM = 2.5V, CL ≤ 10pF, Pin 5 open circuit, unless otherwise noted. SYMBOL PARAMETER CONDITIONS MIN VOS Input Offset Voltage J8, N8 Package S8 Package IOS Input Offset Current IB Input Bias Current Input Voltage Range (Note 4) 2.0 CMRR AVOL Common Mode Rejection Ratio Large-Signal Voltage Gain VCM = 2V to 3.5V RL = 150Ω to Ground, VOUT = 1V to 3V 60 0.5 85 3.0 VOUT Output Voltage Swing RL = 150Ω to Ground 3.5 3.8 0.25 VOUT High VOUT Low 9.0 11.0 1.0 mV mV µA ±0.5 ±2.0 3.5 µA V dB V/mV 0.4 Slew Rate Gain-Bandwidth Product IS Supply Current Shutdown Supply Current Pin 5 at V – 11 0.8 15 1.5 mA mA Shutdown Pin Current Pin 5 at V – 5 25 µA MAX 15.0 UNITS mV µV/°C µA µA dB dB V/mV V/mV V mA mA µA + – 5V ELECTRICAL CHARACTERISTICS 140 45 V V SR GBW IS/D AV = –1, VOUT = 1V to 3V 3.0 3.0 0.2 V/µs MHz –55°C ≤ TA ≤ 125°C, (Note 11) VS = ±5V, Pin 5 open circuit, unless otherwise noted. SYMBOL VOS ∆VOS /∆T IOS IB CMRR PSRR AVOL 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 VOUT IS Output Voltage Swing Supply Current Shutdown Supply Current Shutdown Pin Current IS/D CONDITIONS VCM = –2.5V to 3.5V VS = ±2.375V to ±8V RL = 1k, VOUT = ±3V RL = 150Ω, VOUT = ±3V RL = 1k Pin 5 at V –, (Note 9) Pin 5 at V – MIN 55 55 1.50 0.25 ±3.7 LT1195M TYP 3.0 17 0.2 ±0.5 85 80 5.0 0.8 ±3.9 12 0.8 5 2.0 ±2.5 18 2.5 25 1195fa 3 LT1195 + – 5V ELECTRICAL CHARACTERISTICS 0°C ≤ TA ≤ 70°C VS = ±5V, Pin 5 open circuit, unless otherwise noted. SYMBOL VOS PARAMETER Input Offset Voltage ∆VOS /∆T IOS IB CMRR PSRR AVOL Input VOS Drift Input Offset Current Input Bias Current Common Mode Rejection Ratio Power Supply Rejection Ratio Large-Signal Voltage Gain VOUT IS Output Voltage Swing Supply Current Shutdown Supply Current Shutdown Pin Current IS/D CONDITIONS J8, N8 Package S8 Package MIN VCM = –2.5V to 3.5V VS = ±2.375V to ±5V RL = 1k, VOUT = ±3V RL = 150Ω, VOUT = ±3V RL = 1k 60 60 2.0 0.3 ±3.7 Pin 5 at V – (Note 9) Pin 5 at V – 5V ELECTRICAL CHARACTERISTICS LT1195C TYP 3.0 3.0 12 0.2 ±0.5 85 90 7.5 1.5 ±3.9 12 0.9 5 MAX 10.0 15.0 17 2.0 25 UNITS mV mV µV/°C µA µA dB dB V/mV V/mV V mA mA µA MAX UNITS 10.0 15.0 mV mV µV/°C µA µA V dB V V mA mA µA 1.7 ±2.5 0°C ≤ TA ≤ 70°C VS+ = 5V, VS– = OV, Pin 5 open circuit, unless otherwise noted. SYMBOL PARAMETER CONDITIONS VOS Input Offset Voltage J8, N8 Package S8 Package ∆VOS /∆T IOS IB Input VOS Drift Input Offset Current Input Bias Current Input Voltage Range Common Mode Rejection Ratio Output Voltage Swing CMRR VOUT IS IS/D Supply Current Shutdown Supply Current Shutdown Pin Current (Note 4) VCM = 2V to 3.5V RL = 150Ω to Ground Pin 5 at V – (Note 9) Pin 5 at V – Note 1: Absolute Maximum Ratings are those values beyond which the life of a device may be impaired. Note 2: A heat sink may be required to keep the junction temperature below absolute maximum when the output is shorted continuously. Note 3: TJ is calculated from the ambient temperature TA and power dissipation PD according to the following formats: LT1195MJ8/LT1195CJ8: TJ = TA + (PD • 100°C/ W) LT1195N: TJ = TA + (PD • 100°C/ W) LT1195CS: TJ = TA + (PD • 150°C/ W) Note 4: Exceeding the input common mode range may cause the output to invert. Note 5: Slew rate is measured between ±1V on the output, with ±3V input step. MIN LT1195C TYP 1.0 1.0 15 0.2 ±0.5 VOUT High VOUT Low 2.0 60 3.5 85 3.75 0.15 12 0.9 5 1.7 ±2.5 3.5 0.4 16 2.0 25 Note 6: Full power bandwidth is calculated from the slew rate measurement: FPBW = SR/2πVP. Note 7: Settling time measurement techniques are shown in “Take the Guesswork Out of Settling Time Measurements,” EDN, September 19, 1985. Note 8: NTSC (3.58MHz). For RL = 1k, Diff AV = 0.3%, Diff Ph = 0.35°. Note 9: See Applications Information section for shutdown at elevated temperatures. Do not operate the shutdown above TJ > 125°C. Note 10: AC parameters are 100% tested on the ceramic and plastic DIP packaged parts (J8 and N8 suffix) and are sample tested on every lot of the SO packaged parts (S8 suffix). Note 11: Do not operate at AV < 2 for TA < 0°C. 1195fa 4 LT1195 U W TYPICAL PERFOR A CE CHARACTERISTICS Input Bias Current vs Common Mode Voltage 3.0 V+ 100 VS = ±5V VS = ±5V –0.5 2.0 1.5 1.0 –55°C 0.5 25°C 0 +IB 0 COMMON MODE RANGE (V) INPUT BIAS CURRENT (nA) 2.5 –100 –IB –200 IOS –300 125°C –5 –4 –3 –2 –1 0 1 2 3 COMMON MODE VOLTAGE (V) 4 5 –400 –50 0 25 75 50 TEMPERATURE (°C) –25 400 300 200 100 0 1k 10k FREQUENCY (Hz) 8 6 2 10 100 1k 10k FREQUENCY (Hz) 0 25 75 50 TEMPERATURE (°C) 125°C 10 100 125 1195 G07 0 2 8 4 6 ±SUPPLY VOLTAGE (V) 1195 G06 TA = –55°C VS = ±5V VO = ±3V 1 –1 TA = 25°C TA = 125°C 10 6k 4k 2k RL = 150Ω TA = –55°C 100 LOAD RESISTANCE (Ω) RL = 1k 8k TA = 25°C TA = 125°C –3 10 Open-Loop Gain vs Temperature –5 –25 12 8 100k 3 VS/D = –VEE 0 –50 25°C 10k VS = ±5V OUTPUT VOLTAGE SWING (V) SHUTDOWN SUPPLY CURRENT (mA) 1 125 –55°C 1195 G05 VS/D = –VEE + 0.6V 2 100 4 5 VS/D = –VEE + 0.2V 0 25 50 75 TEMPERATURE (°C) 14 Output Voltage Swing vs Load Resistance VS/D = –VEE + 0.4V –25 VS = ±5V TA = 25°C RS = 100k 10 100k 6 3 V + = –1.8V TO –9V 1.0 16 12 Shutdown Supply Current vs Temperature 4 1.5 Supply Current vs Supply Voltage 14 1195 G04 5 2.0 1195 G03 SUPPLY CURRENT (mA) EQUIVALENT INPUT NOISE CURRENT (pA/√Hz) EQUIVALENT INPUT NOISE VOLTAGE (nV/√Hz) VS = ±5V TA = 25°C RS = 0Ω VS = ±5V –2.0 Equivalent Input Noise Current vs Frequency 600 100 –1.5 1195 G02 Equivalent Input Noise Voltage vs Frequency 10 V + = 1.8V TO 9V V– –50 125 100 1195 G01 500 –1.0 0.5 –0.5 OPEN-LOOP GAIN (V/V) INPUT BIAS CURRENT (µA) Common Mode Voltage vs Temperature Input Bias Current vs Temperature 1k 1195 G08 0 –50 –25 0 25 75 50 TEMPERATURE (°C) 100 125 1195 G09 1195fa 5 LT1195 U W TYPICAL PERFOR A CE CHARACTERISTICS 100 20k 60 VOLTAGE GAIN (dB) 40 GAIN 20 20 VS = ±5V TA = 25°C RL = 1k 0 PHASE MARGIN (DEG) 60 60 0 OPEN-LOOP VOLTAGE GAIN (V/V) 80 80 –20 –20 100k 1M 10M FREQUENCY (Hz) 16k 12k 8k 4k 0 100 100M AV = 20dB VS = ±5V VO = ±3V TA = 25°C PHASE GAIN-BANDWIDTH PRODUCT (MHz) 100 40 Gain-Bandwidth Product vs Supply Voltage Open-Loop Voltage Gain vs Load Resistance Gain and Phase vs Frequency 1k LOAD RESISTANCE (Ω) 70 60 60 50 50 40 40 30 30 –50 –25 50 25 75 0 TEMPERATURE (°C) 20 125 100 AV = 10 1 AV = 1 0.1 0.01 1k 10k 1M 100k FREQUENCY (Hz) 0 –20 1k 10k 100k 1M FREQUENCY (Hz) 10M 100M 1195 G16 20 10 V+ –0.7 VS = ±5V OUTPUT SATURATION VOLTAGE (V) 20 OUTPUT SHORT-CIRCUIT CURRENT (mA) POWER SUPPLY REJECTION RATIO (dB) +PSRR –PSRR 30 1M 10M FREQUENCY (Hz) 100M 1195 G15 36 VS = ±5V TA = 25°C VRIPPLE = ±300mV 40 0 100k 100M 10M Output Short-Circuit Current vs Temperature 80 10 VS = ±5V TA = 25°C RL = 1k 50 1195 G14 Power Supply Rejection Ratio vs Frequency 40 8 4 6 ±SUPPLY VOLTAGE (V) Common Mode Rejection Ratio vs Frequency 10 1195 G13 60 2 1195 G12 COMMON MODE REJECTION RATIO (dB) 70 0 60 80 UNITY-GAIN PHASE MARGIN 20 VS = ±5V TA = 25°C OUTPUT IMPEDANCE (Ω) 80 30 100 PHASE MARGIN (DEG) UNITY-GAIN FREQUENCY (MHz) 90 40 Output Impedance vs Frequency 90 VS = ±5V RL = 1k TA = 125°C 1195 G11 Unity-Gain Frequency and Phase Margin vs Temperature UNITY-GAIN FREQUENCY TA = 25°C 50 10k 1195 G10 100 TA = –55°C 35 34 33 32 31 30 –50 –25 50 0 25 75 TEMPERATURE (°C) 100 125 1195 G17 ±Output Swing vs Supply Voltage –0.8 125°C –0.9 25°C –1.0 –55°C –1.1 0.5 RL = RFB ±1.8V ≤ VS ≤ ±9V 0.4 125°C 25°C 0.3 –55°C 0.2 0.1 V– 0 2 6 4 SUPPLY VOLTAGE (V) 8 10 1195 G18 1195fa 6 LT1195 U W TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Step vs Settling Time, AV = –1 Slew Rate vs Temperature 4 OUTPUT VOLTAGE STEP (V) SLEW RATE (V/µs) VS = ±5V RFB = 1k VO = ±2V AV = –1 –SLEW RATE 200 +SLEW RATE 4 VS = ±5V TA = 25°C RL = 1k 2 10mV OUTPUT VOLTAGE STEP (V) 250 150 –50 Output Voltage Step vs Settling Time, AV = 1 1mV 0 –2 10mV 1mV –4 –25 50 0 25 75 TEMPERATURE (°C) 100 125 VS = ±5V TA = 25°C RL = 1k 2 10mV 1mV 0 10mV 1mV –2 –4 200 100 300 SETTLING TIME (ns) 0 400 200 100 300 SETTLING TIME (ns) 0 400 1195 G20 1195 G19 Large-Signal Transient Response 1195 G21 Large-Signal Transient Response AV = 1, RL = 1k AV = –1, RL = 1k 1195 G23 1195 G22 Overload Recovery 5V 3 + 7 LT1195 2 – 6 4 8 1 INPUT OFFSET VOLTAGE CAN BE ADJUSTED OVER A ±150mV RANGE WITH A 1k to 10k POTENTIOMETER. 1195 G25 AV = 1, VIN = 11VP-P 1195 G24 1195fa 7 LT1195 U W U U APPLICATIO S I FOR ATIO Power Supply Bypassing The LT1195 is quite tolerant of power supply bypassing. In some applications a 0.1µF ceramic disc capacitor placed 0.5 inches from the ampifier is all that is required. In applications requiring good settling time, it is important to use multiple bypass capacitors. A 0.1µF ceramic disc in parallel with a 4.7µF tantalum is recommended. Cable Terminations The LT1195 operational amplifier has been optimized as a low cost video cable driver. The ±20mA guaranteed output current enables the LT1195 to easily deliver 6VP-P into 150Ω, while operating on ±5V supplies. Double-Terminated Cable Driver 5V 3 7 + LT1195 2 – RG 4 75Ω 6 RFB CABLE 75Ω –5V 1195 AI01 Cable Driver Voltage Gain vs Frequency 8 receiving end (75Ω to ground) to absorb unwanted energy. The best performance can be obtained by double termination (75Ω in series with the output of the amplifier, and 75Ω to ground at the other end of the cable). This termination is preferred because reflected energy is absorbed at each end of the cable. When using the double termination technique it is important to note that the signal is attenuated by a factor of 2, or 6dB. This can be compensated for by taking a gain of 2, or 6dB in the amplifier. Using the Shutdown Feature The LT1195 has a unique feature that allows the amplifier to be shut down for conserving power, or for multiplexing several amplifiers onto a common cable. The amplifier will shutdown by taking Pin 5 to V –. In shutdown, the amplifier dissipates 15mW while maintaining a true high impedance output state of 15k in parallel with the feedback resistors. The amplifiers must be used in a noninverting configuration for MUX applications. In inverting configurations the input signal is fed to the output through the feedback components. The following scope photos show that with very high RL, the output is truly high impedance; the output slowly decays toward ground. Additionally, when the output is loaded with as little as 1k the amplifier shuts off in 700ns. This shutoff can be under the control of HC CMOS operating between 0V and –5V. 6 VOLTAGE GAIN (dB) 4 AV = 2 RFB = 1k RG = 330Ω 2 0 Output Shutdown AV = 1 RFB = 1k RG = 1k –2 –4 –6 –8 –10 VS = ±5V TA = 25°C –12 100k 1M 10M FREQUENCY (Hz) 100M 1195 AI02 When driving a cable it is important to terminate the cable to avoid unwanted reflections. This can be done in one of two ways: single termination or double termination. With single termination, the cable must be terminated at the 1MHz SINE WAVE GATED OFF WITH SHUTDOWN PIN AV = 1, RL = SCOPE PROBE 1195 AI03 1195fa 8 LT1195 U W U U APPLICATIO S I FOR ATIO Output Shutdown Single 5V Video Amplifier VIN 10µF 5V 1k 3 + 5V 7 LT1195 R1 3k 2 RG 1k – 4 1000µF 6 75Ω RFB 1k 10k R2 2k 100µF 75Ω 1195 AI05 1MHz SINE WAVE GATED OFF WITH SHUTDOWN PIN AV = 1, RL = 1k 1195 AI04 Video Multiburst at Pin 6 of Amplifier Detecting Pulses The front page shows a circuit for detecting very fast pulses. In this open-loop design, the detector diode is D1 and a level shifting or compensating diode is D2. A load resistor RL is connected to –5V, and an identical bias resistor RB is used to bias the compensating diode. Equal value resistors ensure that the diode drops are equal. A very fast pulse will exceed the amplifier slew rate and cause a long overload recovery time. Some amount of dV/dt limiting on the input can help this overload condition, however too much will delay the response. Also shown is the response to a 4VP-P input that is 150ns wide. The maximum output slew rate in the photo is 30V/µs. This rate is set by the 30mA current limit driving 1000pF. 3V 2V 1V 0V 1195 AI06 Vector Plot of Standard Color Burst Operation on Single 5V Supply The LT1195 has been optimized for a single 5V supply. This circuit amplifies standard composite video (1VP-P including sync) by 2 and drives a double-terminated 75Ω cable. Resistors R1 and R2 bias the amplifier at 2V, allowing the sync pulses to stay within the common mode range of the amplifier. Large coupling capacitors are required to pass the low frequency sidebands of the composite signal. A multiburst response and vector plot standard color burst are shown. 1195 AI07 1195fa 9 LT1195 U W U U APPLICATIO S I FOR ATIO 1.5MHz Square Wave Input and Equalized Response Through 1000 Feet of Twisted-Pair Send Color Video Over Twisted-Pair With an LT1195 it is possible to send and receive color composite video signals more than 1000 feet on a low cost twisted-pair. A bidirectional “video bus” consists of the LT1195 op amp and the LT1187 video difference amplifier. A pair of LT1195s at TRANSMIT 1, is used to generate differential signals to drive the line which is back-terminated in its characteristic impedance. The LT1187 twisted-pair receiver, converts signals from differential to single-ended. Topology of the LT1187 provides for cable compensation at the amplifier’s feedback node as shown. In this case, 1000 feet of twisted-pair is compensated with 1000pF and 50Ω to boost the 3dB bandwidth of the system from 750kHz to 4MHz. This bandwidth is adequate to pass a 3.58MHz chrome subcarrier and the 4.5MHz sound subcarrier. Attenuation in the cable can be compensated by lowering the gain set resistor RG. At TRANSMIT 2, another pair of LT1195s serve the dual function to provide cable termination via low output impedance and generate differential signals for TRANSMIT 2. Cable termination is made up of 15Ω and 33Ω attentuators to reduce the differential input signal to the LT1187. Maximum input signal for the LT1187 is 760mVP-P. 1195 A109 Multiburst Pattern Passed Through 1000 Feet of Twisted-Pair 1.5MHz Square Wave Input and Unequalized Response Through 1000 Feet of Twisted-Pair 1195 A110 Vector Plot of Standard Color Burst Through 1000 Feet of Twisted-Pair 1195 A108 1195 A111 1195fa 10 LT1195 U W U U APPLICATIO S I FOR ATIO Bidirectional Video Bus TRANSMIT 1 3 + 1k 2 75Ω TRANSMIT 2 6 LT1195 6 – 1k 1k – – 6 6 LT1195 + 33Ω S/D 75Ω 6 75Ω 2 1k 1k 1k 3 1k LT1195 – 1k 2 3 + + 5 – LT1187 + RFB – 33Ω 15Ω 3 1000 FT TWISTED-PAIR 15Ω 15Ω 15Ω 2 33Ω LT1195 3 S/D 3 2 1 8 8 + – + – 300Ω 1000pF + 33Ω 1 RG 300Ω 2 5 LT1187 6 75Ω RFB 300Ω 1000pF 50Ω 50Ω RG 300Ω RECEIVE 1 RECEIVE 2 1195 AI12 W W SIWPLIFIED SCHEWATIC 7 V+ VBIAS VBIAS CM + 3 CFF – 2 V+ V+ 6 VOUT * 4 V– 5 1 8 S/D BAL BAL 1195 SS * SUBSTRATE DIODE, DO NOT FORWARD BIAS 1195fa 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 LT1195 U PACKAGE DESCRIPTIO J8 Package 8-Lead CERDIP (Narrow .300 Inch, Hermetic) (Reference LTC DWG # 05-08-1110) .300 BSC (7.62 BSC) CORNER LEADS OPTION (4 PLCS) .008 – .018 (0.203 – 0.457) 0° – 15° .015 – .060 (0.381 – 1.524) .023 – .045 (0.584 – 1.143) HALF LEAD OPTION .045 – .068 (1.143 – 1.650) FULL LEAD OPTION .405 (10.287) MAX .005 (0.127) MIN .200 (5.080) MAX 8 NOTE: LEAD DIMENSIONS APPLY TO SOLDER DIP/PLATE OR TIN PLATE LEADS .014 – .026 (0.360 – 0.660) 5 .025 (0.635) RAD TYP .220 – .310 (5.588 – 7.874) 1 .045 – .065 (1.143 – 1.651) 6 7 2 3 4 .125 3.175 MIN .100 (2.54) BSC J8 0801 OBSOLETE PACKAGE N8 Package 8-Lead PDIP (Narrow .300 Inch) (Reference LTC DWG # 05-08-1510) .300 – .325 (7.620 – 8.255) .009 – .015 (0.229 – 0.381) ( +.035 .325 –.015 +0.889 8.255 –0.381 .130 ± .005 (3.302 ± 0.127) .045 – .065 (1.143 – 1.651) .400* (10.160) MAX .065 (1.651) TYP 7 6 5 1 2 3 4 .255 ± .015* (6.477 ± 0.381) .125 (3.175) .020 MIN (0.508) MIN .018 ± .003 (0.457 ± 0.076) .100 (2.54) BSC ) 8 N8 0502 NOTE: 1. DIMENSIONS ARE INCHES MILLIMETERS *THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. MOLD FLASH OR PROTRUSIONS SHALL NOT EXCEED .010 INCH (0.254mm) S8 Package 8-Lead Plastic Small Outline (Narrow .150 Inch) (Reference LTC DWG # 05-08-1610) .189 – .197 (4.801 – 5.004) NOTE 3 .045 ±.005 .050 BSC N 8 .245 MIN 2 3 N/2 6 5 N .160 ±.005 1 7 .150 – .157 (3.810 – 3.988) NOTE 3 .228 – .244 (5.791 – 6.197) N/2 .030 ±.005 TYP RECOMMENDED SOLDER PAD LAYOUT NOTE: INCHES 1. DIMENSIONS IN (MILLIMETERS) 2. DRAWING NOT TO SCALE 3. THESE DIMENSIONS DO NOT INCLUDE MOLD FLASH OR PROTRUSIONS. .010 – .020 × 45° MOLD FLASH OR PROTRUSIONS SHALL (0.254 – 0.508) NOT EXCEED .006" (0.15mm) .008 – .010 0°– 8° TYP (0.203 – 0.254) .016 – .050 (0.406 – 1.270) 1 .053 – .069 (1.346 – 1.752) .014 – .019 (0.355 – 0.483) TYP 2 3 4 .004 – .010 (0.101 – 0.254) .050 (1.270) BSC SO8 0502 1195fa 12 Linear Technology Corporation LW/TP 1002 1K REV A • PRINTED IN USA 1630 McCarthy Blvd., Milpitas, CA 95035-7417 (408) 432-1900 ● FAX: (408) 434-0507 ● www.linear.com LINEAR TECHNOLOGY CORPORATION 1993