Datasheet LT1193 (Analog Devices) - 7
| Manufacturer | Analog Devices |
| Description | Video Difference Amplifier |
| Pages / Page | 12 / 7 — TYPICAL PERFOR A CE CHARACTERISTICS. Output Voltage Swing. Output Voltage … |
| File Format / Size | PDF / 448 Kb |
| Document Language | English |
TYPICAL PERFOR A CE CHARACTERISTICS. Output Voltage Swing. Output Voltage Step. vs Load Resistance. Slew Rate vs Temperature
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LT1193
W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Swing Output Voltage Step vs Load Resistance Slew Rate vs Temperature vs Settling Time, AV = 2
5 900 4 VS = ±5V VS = ±5V TA = 25°C T 800 RL = 1k 3 A = –55°C – SLEW RATE 2 10mV TA = 25°C µs) 700 1 TA = 125°C TE (V/ 600 TAGE STEP (V) 0 –1 +SLEW RATE SLEW RA 500 V –2 T S = ±5V OUTPUT VOL OUTPUT VOLTAGE SWING (V) –3 A = 125°C 10mV 400 TA = 25°C RL = 1k TA = –55°C, 25°C VO = ±2V –5 300 –4 10 100 1000 –50 –25 0 25 50 75 100 125 40 50 60 70 80 90 100 LOAD RESISTANCE (Ω) TEMPERATURE (°C) SETTLING TIME (ns) LT1193 • TPC19 LT1193 • TPC20 LT1193 • TPC21
Large-Signal Transient Response Small-Signal Transient Response Small-Signal Transient Response
LT1193 • TPC22 LT1193 • TPC23 LT1193 • TPC24 AV = 2, RL = 150Ω, RFB = 300Ω, RG = 300Ω AV = –10, SMALL-SIGNAL RISE TIME = 43ns AV = 2, RFB = 300Ω, RG = 300Ω, OVERSHOOT = 25%, RISE TIME = 4.7ns
U U W U APPLICATIO S I FOR ATIO
The LT1193 is a video difference amplifier which has two and a full-power bandwidth of 40MHz at 4VP-P. Like the uncommitted high input impedance (+) and (–) inputs. single-ended case, the differential voltage gain is set by the The amplifier has one set of inputs that can be used for external resistors: (RFB + RG)/RG. The maximum input reference and feedback. Additionally, this set of inputs differential signal for which the output will respond is give gain adjust and DC control to the differential amplifier. approximately ±1.3V. The voltage gain of the LT1193 is set like a conventional operational amplifier. Feedback is applied to Pin 8 and it is
Power Supply Bypassing
optimized for gains of 2 or greater. The amplifier can be The LT1193 is quite tolerant of power supply bypassing. operated single-ended by connecting either the (+) or (–) In some applications a 0.1µF ceramic disc capacitor inputs to +/REF, Pin 1. The voltage gain is set by the placed 1/2 inch from the amplifier is all that is required. A resistors: (RFB + RG)/RG. scope photo of the amplifier output with no supply by- The primary usefulness of the LT1193 is in converting passing is used to demonstrate this bypassing tolerance, high speed differential signals to a single-ended output. RL = 1k. The amplifier has common mode rejection beyond 50MHz 1193fb 7
W U TYPICAL PERFOR A CE CHARACTERISTICS Output Voltage Swing Output Voltage Step vs Load Resistance Slew Rate vs Temperature vs Settling Time, AV = 2
5 900 4 VS = ±5V VS = ±5V TA = 25°C T 800 RL = 1k 3 A = –55°C – SLEW RATE 2 10mV TA = 25°C µs) 700 1 TA = 125°C TE (V/ 600 TAGE STEP (V) 0 –1 +SLEW RATE SLEW RA 500 V –2 T S = ±5V OUTPUT VOL OUTPUT VOLTAGE SWING (V) –3 A = 125°C 10mV 400 TA = 25°C RL = 1k TA = –55°C, 25°C VO = ±2V –5 300 –4 10 100 1000 –50 –25 0 25 50 75 100 125 40 50 60 70 80 90 100 LOAD RESISTANCE (Ω) TEMPERATURE (°C) SETTLING TIME (ns) LT1193 • TPC19 LT1193 • TPC20 LT1193 • TPC21
Large-Signal Transient Response Small-Signal Transient Response Small-Signal Transient Response
LT1193 • TPC22 LT1193 • TPC23 LT1193 • TPC24 AV = 2, RL = 150Ω, RFB = 300Ω, RG = 300Ω AV = –10, SMALL-SIGNAL RISE TIME = 43ns AV = 2, RFB = 300Ω, RG = 300Ω, OVERSHOOT = 25%, RISE TIME = 4.7ns
U U W U APPLICATIO S I FOR ATIO
The LT1193 is a video difference amplifier which has two and a full-power bandwidth of 40MHz at 4VP-P. Like the uncommitted high input impedance (+) and (–) inputs. single-ended case, the differential voltage gain is set by the The amplifier has one set of inputs that can be used for external resistors: (RFB + RG)/RG. The maximum input reference and feedback. Additionally, this set of inputs differential signal for which the output will respond is give gain adjust and DC control to the differential amplifier. approximately ±1.3V. The voltage gain of the LT1193 is set like a conventional operational amplifier. Feedback is applied to Pin 8 and it is
Power Supply Bypassing
optimized for gains of 2 or greater. The amplifier can be The LT1193 is quite tolerant of power supply bypassing. operated single-ended by connecting either the (+) or (–) In some applications a 0.1µF ceramic disc capacitor inputs to +/REF, Pin 1. The voltage gain is set by the placed 1/2 inch from the amplifier is all that is required. A resistors: (RFB + RG)/RG. scope photo of the amplifier output with no supply by- The primary usefulness of the LT1193 is in converting passing is used to demonstrate this bypassing tolerance, high speed differential signals to a single-ended output. RL = 1k. The amplifier has common mode rejection beyond 50MHz 1193fb 7
