LT1993-4 Linear Technology, LT1993-4 Datasheet
LT1993-4
Related parts for LT1993-4
LT1993-4 Summary of contents
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... It can be used as a differential ADC driver, a general-purpose differential gain block any other application requir- ing differential drive. The LT1993-4 can be used in data acquisition systems required to function at frequencies down to DC. The LT1993-4 operates supply and consumes 100mA. It comes in a compact 16-lead 3 × ...
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... LT1993 ABSOLUTE AXI U RATI GS (Note 1) Total Supply Voltage ( CCA CCB ...................................................5.5V EEA EEB EEC Input Current (+INA, –INA, +INB, –INB ENABLE) ................................................±10mA OCM Output Current (Continuous) (Note 6) +OUT, –OUT (DC) ..........................................±100mA (AC) ..........................................±100mA +OUTFILTERED, –OUTFILTERED (DC) .............±15mA Output Short Circuit Duration (Note 2) ............ Indefi nite Operating Temperature Range (Note 3) ... – ...
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... OCM CONDITIONS 200mV Differential (+OUT, –OUT) P-P 200mV Differential (+OUT, –OUT) P-P 200mV Differential (+OUT, –OUT) P-P 3.2V Differential (+OUT, –OUT) P-P 1% Settling for a 1V Differential Step P-P (+OUT, –OUT) LT1993-4 www.DataSheet4U.com = 0V, ENABLE = 0.8V, +INA EEA EEB EEC unless otherwise noted. LOAD MIN TYP MAX ● 0.3 0.8 ...
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... LT1993-4 AC ELECTRICAL CHARACTERISTICS ENABLE = 0.8V, +INA shorted to +INB (+IN), –INA shorted to –INB (–IN), V unless otherwise noted. SYMBOL PARAMETER Common Mode Voltage Control (V Pin) OCM –3dBBW Common Mode Small-Signal –3dB CM Bandwidth SRCM Common Mode Slew Rate Noise/Harmonic Performance Input/output Characteristics 1kHz Signal Second/Third Harmonic Distortion ...
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... QA sampled at these temperatures. The LT1993I-4 is guaranteed to meet specifi ed performance from –40°C to 85°C. Note 5: This parameter is pulse tested. Note 6: This parameter is guaranteed to meet specifi ed performance through design and characterization. It has not been tested. LT1993-4 www.DataSheet4U.com = 5V ...
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... LT1993 TYPICAL PERFOR A CE CHARACTERISTICS Frequency Response R = 400Ω LOAD 18 15 UNFILTERED OUTPUTS 12 FILTERED 9 OUTPUTS 50mV IN P-P 0 UNFILTERED 400Ω LOAD FILTERED 350Ω LOAD –3 (EXTERNAL) + 50Ω (INTERNAL FILTERED OUTPUTS) – 100 1000 10000 FREQUENCY (MHz) 19934 G01 ...
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... IMPEDANCE MAGNITUDE IMPEDANCE PHASE –25 –50 –75 –100 1 10 100 1000 FREQUENCY (MHz) ''!" LT1993-4 www.DataSheet4U.com Distortion vs Output Amplitude 70MHz Differential Input No R LOAD –50 –55 –60 HD3 UNFILTERED –65 OUTPUTS –70 HD3 FILTERED –75 OUTPUTS –80 –85 ...
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... R = 100Ω PER OUTPUT LOAD 2.26 2.24 2.22 2.20 2.18 2.16 2.14 2. TIME (ns) 19934 G22 Distortion vs Output Common Mode Voltage, LT1993-4 Driving LTC2249 14-Bit ADC –64 FILTERED OUTPUTS LOAD V = 70MHz 2V OUT P-P –66 –68 –70 HD3 –72 HD2 –74 –76 1.2 1.4 1.6 1.8 2.0 2.2 2.4 OUTPUT COMMON MODE VOLTAGE (V) ...
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... Tied to 5V). All three pins must be tied to the same voltage. Bypass each pin with 1000pF and 0.1µF capacitors as close to the package as possible. Split supplies are possible as long as the voltage between V and V is 5V. EE 50MHz 8192 Point FFT, LT1993-4 Driving LTC2249 14-Bit ADC 0 8192 POINT FFT – 50MHz, –1dBFS IN – ...
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... Block Diagram). This fi lter has a –3dB bandwidth of 175MHz. ENABLE (Pin 11): This pin is a TTL logic input referenced to the V pin. If low, the LT1993-4 is enabled and draws EEC typically 100mA of supply current. If high, the LT1993-4 is disabled and draws typically 250µA. W BLOCK DIAGRA –INA 100Ω ...
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... Low output impedance • Built-in, user adjustable output fi ltering • Requires minimal support circuitry Referring to the block diagram, the LT1993-4 uses a closed- loop topology which incorporates 3 internal amplifi ers. Two of the amplifi ers (A and B) are identical and drive the differential outputs. The third amplifi ...
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... Figure 4. Adding Small Series R at LT1993-4 Output Filtered Applications (Using the +OUTFILTERED and –OUTFILTERED Pins) Filtering at the output of the LT1993-4 is often desired to provide either anti-aliasing or improved signal to noise ratio. To simplify this fi ltering, the LT1993-4 includes an additional pair of differential outputs (+OUTFILTERED and – ...
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... F06 Figure 8. LT1993-4 Output Filter Topology Modifi ed for Bandpass Filtering (1 External Inductor, 1 External Capacitor) Output Common Mode Adjustment The LT1993-4’s output common mode voltage is set by the V pin high-impedance input, capable of setting OCM the output common mode voltage anywhere in a range from 1 ...
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... SNR 4dB. Typical performance curves and AC specifi cations have been included for these applications. Input Bias Voltage and Bias Current The input pins of the LT1993-4 are internally biased to pin. No external biasing the voltage applied to the V OCM resistors are needed, even for AC-coupled operation. The PACKAGE DESCRIPTIO 3.50 ± ...
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... U TYPICAL APPLICATIO 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 represen- tation that the interconnection of its circuits as described herein will not infringe on existing patent rights. LT1993-4 www.DataSheet4U.com 19934fa 15 ...
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... R16 1000pF 0. R10 V ENABLE V V EEC CCB EEB 24 –INB –OUT R8 [ –INA –OUTFILTERED L1 R7 LT1993-4 [1] [ +INB +OUTFILTERED R9 24 +INA +OUT CCC OCM CCA EEA C12 C13 ...