CEM3340 ETC

Document overview

  • Manufacturer or author: Provided By www.digicamel.com(FREE DATASHEET DOWNLOAD SITE)
  • PDF pages: 2

Technical content

Features

w yous sy Raed 50,000:1 min. wxd wd voy ial ov YN ANPUT ®@ Fully Temperature BS 88 m Sth Compensated; No Q81 47022 = owe cr I Resistor Required “5v 18 = ™ Four Output Waveforms Tt MF 6 ‘i te ag ay ry aanalry Gaus Available; No waveform oy QO ro i ro) ) fe) trimming required. ly Lb] & Summing Node Inputs for X/ \\7 Frequency Control a High Exponential Scale PRECISION vo PD & op Accuracy ror MULTIPLIER oI wa . viEW )) 2) g @ Low Temperature Drift Voltage Controlled Pulse AW TR Width Ea (a) <q SAW, @ Hard and Soft Sync Inputs rs CONV. ‘ ch ee ™@ Buffered, Short Circuit TO le) re) 10) rie) se) che) Protected Outputs sour | HIGH @ £15 Volt Supplies » wn 412V P.W.M. HARD OV, 10K ” ” 10K CNT. SvNc. =o Ww = “— SCALE ADJ. “sv

Electrical Characteristics

Voc = +15V Vee = Internal Zener Ta = 20°C bcm | Frequency Control Range B0K:1 _500K:1 - || x Exponential Scale Error, Untrimmed? - 02 1 % ad Exponential Scale Error, Trimmed? - 0.05 03 % WA Six wv Multiplier Gain Error2 = 0.0005 0.008 | %/uA “ Tempo Cancellation? -150 ° +150 ppm 7 Oscillator Drift = +50 +200 ppm 22000000 Triangle Buffer Input Curent - 03 3 [na be | Triangle Waveform Upper Level 435 5.0 5.15 v a Triangle Waveform Lower Level 15 0 15 mv Sy Triangle Waveform Symmetry 45 50 55 % ve a re Sawtooth Waveform Upper Level 94 10.0 10.6 v wv > Sawtooth Waveform Lower Level -25 0 +25 mv mK stOuTace Triangle Output Sink Capability 400 550 750 = Ne kevEs Sawtooth Output Sink Capability 640 800 1000 FIGURE 2: CLAMPING PULSE UPPER LEVEL Triangle & Sawtooth Output Impedance 65 100 150 a onnoaooa Pulse Output Source Capability at +10V 28 35 46 mA Squarewave Output Levels8, CEM 3345 A804 -130 08,404 v p PWM Input Pin Current” 5 15 3.5 uA i ih id ~ PWM Input Voltage for 0% Pulse Width -15 ° +15 mv ruse oer PWM Input Voltage for 100% Pulse Width 46 5.0 54 v on wet WY - Input Bias Current at Reference and ve Controi Current Inputs 80 200 400 nA 1 Tempco of Input Bias Currents 1000 ° +1000 ppm ~ Offset Voltage at Reference and Control FIGURE 2: ADDING HYSTERESIS TO PULSE SHAPER Current inputs 5 ° +8 mv oo oo0000 Hard Syne Reference Voltage +23 25 28 v b Hard Syne Input Resistance 5 63 79 ka Max Capacitor Charge/Discharge Current 400 570 zoo | ua | ° rome] mere Positive Supply Current 4 5 65 mA VEE DED Positive Supply Voltage Range +10 +18 v wi wit 1K Negative Supply Voltage Range8 45 -18 Vv rosnive necavve = tv "WARD. MARD iviiwy avin Note 1: This error represents the percentage difference in scale factors (volts per frequency rloune 4 wernoe ron svac on RISING ratio) of the exponential generator anywhere over the exponential generator current OR FALLING eoee range of 50nA to 100uA. Most of this error occurs at the range extremities. Note 2: This error represents the percentage difference in multiplier gains at any two input cur- palm at 10K rents, within the range of 20 vA to 180 uA, per uA difference between the two ourrur oF corresponding outputs. ANOTHER Noe Note 3: This spec represents the difference between the actual tempco of the multiplier output ok ox voltage (expressed relative to the maximum output excursions) and the tempco required rat to precisely cancel the tempco of the exponential scale factor (q/KT) coo wtod Sf Note 4: The multiplier output is grounded. fur Note 5: For exponential generator currents less than 10 uA; above 10 wA, impedance drops to p I 1/3 this value as the highest current is approached. tooo = Note 6: With respect to the hard sync input reference voltage. rioUmes CONVENTIONAL HARD SYNE Note 7: For PWM control inputs between -1 and +6 volts. This current is significantly greater for inputs outside of this range. ~ Note 8: Current limiting resistor required for negative supplies greater than -6 volts. CRS CURTIS ELECTROMUSIC SPECIALTIES Curtis Electromusic Specialties (CES) assumes no responsibility for use of any circuitry described. No circuit licenses are implied. CES reserves the right, at any time without notice, to change said circuitry. Printed U.S.A. © 1980