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Models 458 and 460 are high performance, differential input, voltage to frequency modular converters designed for analog to digital applications requiring accuracy and fast data conversion. Model 458 offers a l00kHz full scale frequency, guaranteed nonlinearity of ±0.01% maximum over five decades (1Hz to 100kHz) of operation and guaranteed low maximum gain drift in three model selections; model 458L: 5ppm/°C max; model 458K: 10ppm/°C max; and model 458J: 20ppm/°C max. Model 460 offers a 1MHz full scale frequency, guaranteed maximum nonlinearity of ±0.015% over six decades (1Hz to 1MHz) of operation and guaranteed low maximum gain drift in three selections; model 460L: 15ppm/°C max; model 460K: 25ppm/°C max; and model 460J: 50ppm/°C max. Model 460L is the industry's first 1MHz V/F converter to offer 15ppm/°C maximum gain drift.
The differential input stage of models 458 and 460 provide the versatility of either direct interface to off-ground 0 to +11V input signals with common mode voltages (CMV) to ±10V, as well as ground referenced positive, 0 to +11V or negative, 0 to -11V signals. Both models also accept positive current signals: 0 to +0.5mA, model 458; 0 to +1mA, model 460 for current to frequency (I/F) applications.
460J Features
High Stability: 5ppm/°C max, Model 458L 15ppm/°C max, Model 460L Low Nonlinearity: 100ppm max, Model 458 150ppm max, Model 460 Versatility: Differential Input Stage Voltage and Current Inputs Floating Inputs: ±10V CMV Wide Dynamic Range: 6 Decades, Model 460 TTL/DTL Compatible Output APPLICATIONS Fast Analog-to-Digital Converter High Resolution Optical Data Link Ratiometric Measurements 2-Wire High Noise Immunity Digital Transmission Long Term Precision Integrator