LT1800 Linear Technology, LT1800 Datasheet
LT1800
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LT1800 Summary of contents
Page 1
... The LT1800 is available in the 8-pin SO package with the standard op amp pinout and in the 5-pin SOT-23 package. For dual and quad versions of the LT1800, see the LT1801/ LT1802 data sheet. The LT1800 can be used as a plug-in replacement for many op amps to improve input/output range and performance ...
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... 2.5V to 10V ORDER PART NUMBER TOP VIEW + LT1800CS5 LT1800IS5 + – 4 –IN S5 PART MARKING S5 PACKAGE LTRN = 150 C, = 250 LTRP MIN TYP MAX 75 350 300 750 0.5 3 0.7 3.5 20 180 25 250 500 ...
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... No Load I = 5mA SINK I = 20mA SINK No Load I = 5mA SOURCE I = 20mA SOURCE Frequency = 2MHz – 1k P-P LT1800 MIN TYP MAX 160 225 450 16 60 120 250 450 750 1 –75 250 0.35 0 5V, 0V ...
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... LT1800 ELECTRICAL CHARACTERISTICS of – 5V, 0V 3V, 0V SYMBOL PARAMETER V Input Offset Voltage OS V Input Offset Shift Input Offset Voltage Drift (Note Input Bias Current B I Input Offset Current OS A Large-Signal Voltage Gain VOL CMRR Common Mode Rejection Ratio ...
Page 5
... R = 100 O L – 3. – 2.5V to 10V Load I = 5mA SINK I = 20mA SINK No Load I = 5mA SOURCE I = 20mA SOURCE LT1800 MIN TYP MAX 109 – 170 225 450 17 70 130 260 450 750 ...
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... L O Note 5: The LT1800C is guaranteed to meet specified performance from The LT1800C is designed, characterized and expected to meet specified performance from – but is not tested or QA sampled at these temperatures. The LT1800I is guaranteed to meet specified performance from – ...
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... 0.5 0.4 0.3 0.2 PNP ACTIVE V = 5V –0.1 6 –60 –40 – TEMPERATURE ( C) LT1800 V Distribution (SOT-23, PNP Stage 5V 2000 –1250 –750 –250 250 INPUT OFFSET VOLTAGE ( V) 1800 G02 ...
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... L 1200 800 400 –400 –800 R = 100 L –1200 –1600 –2000 3 0 0.5 1 1.5 2 2.5 3 3.5 4 OUTPUT VOLTAGE (V) Warm-Up Drift vs Time (LT1800S8) 120 110 100 2. 1. TYPICAL PART 100 TIME AFTER POWER-UP (SECONDS) Output Short-Circuit Current ...
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... Output Impedance vs Frequency 600 V = 2.5V S 100 0.1 0.01 0.001 100 300 0 FREQUENCY (MHz) 1800 G24 LT1800 1800 G19 100 –20 –40 –60 –80 –100 100 300 1800 G22 100 ...
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... LT1800 W U TYPICAL PERFOR A CE CHARACTERISTICS Common Mode Rejection Ratio vs Frequency 120 100 0.01 0 100 FREQUENCY (MHz) 1800 G26 Series Output Resistor vs Capacitive Load 5V ...
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... U U APPLICATIO S I FOR ATIO Circuit Description The LT1800 has an input and output signal range that covers from the negative power supply to the positive power supply. Figure 1 depicts a simplified schematic of the amplifier. The input stage is comprised of two differ- ential amplifiers, a PNP stage Q1/Q2 and an NPN stage Q3/ Q4 that are active over the different ranges of common mode input voltage ...
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... LT1800 provide the precision performance especially for high source imped- ance applications. Output . So there JA The LT1800 can deliver a large output current, so the short-circuit current limit is set around 50mA to prevent is J damage to the device. Attention must be paid to keep the , power dissi- ...
Page 13
... The circuit in the front page of this data sheet shows the LT1800 used laser driver application. One of the reasons the LT1800 is well suited to this control task is that its 2.3V operation ensures that it will be awake during power-up and operated before the circuit can otherwise cause significant current to flow in the 2 ...
Page 14
... Single 3V Supply, 1MHz, 4th Order Butterworth Filter The circuit shown in Figure 4 makes use of the low voltage operation and the wide bandwidth of the LT1800 to create a DC accurate 1MHz 4th order lowpass filter powered from a 3V supply. The amplifiers are configured in the inverting mode for the lowest distortion and the output can swing rail-to-rail for maximum dynamic range ...
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... LTC DWG # 05-08-1610) 0.053 – 0.069 (1.346 – 1.752) 0.004 – 0.010 (0.101 – 0.254) 0.014 – 0.019 0.050 (1.270) (0.355 – 0.483) TYP BSC LT1800 2.90 BSC (NOTE 4) 0.30 – 0.45 TYP 5 PLCS (NOTE 3) 0.01 – 0.10 1.90 BSC S5 TSOT-23 0302 0.189 – 0.197* (4.801 – 5.004) 8 ...
Page 16
... R4 and R5. When a transient signal arrives amp output moves and causes the current change depending on the signal polarity. The current, limited by the clipping of the LT1800 output and the 3k of total emitter degeneration, is mirrored to the output devices to drive the capacitive load. The LT1800 output then returns to near mid-supply, providing the precise DC output voltage to the load ...