Datasheet LT1055, LT1056 (Analog Devices) - 12

LT1055/LT1056
TYPICAL APPLICATIONS
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Exponential Voltage-to-Frequency Converter for Music Synthesizers
INPUT 0V TO 10V EXPONENT TRIM 11.3k* 500pF 2N3906 2500Ω* POLYSTYRENE 5 15V 6 4 2 7 2N3904 – 6 500Ω* 3.57k* LT1055 500k ZERO TRIM 3 + SAWTOOTH OUTPUT –15V 4.7k 1.1k 1k* 562Ω* 15V LM329 4.7k 10k* 10k* 15V 2 15V – 7 3k 9 6 LM301A 8 1k* 3 13 + 8 14 7 1 1N148 1 2 3 4 0.01µF 15 33Ω 2.2k SCALE FACTOR –15V 1V IN OCTAVE OUT †For ten additional applications utilizing the *1% METAL FILM RESISTOR TEMPERATURE CONTROL LOOP LT1055 and LT1056, please see the LTC1043 PIN NUMBERED TRANSISTORS = CA3096 ARRAY data sheet and Application Note 3. LT1055/56 TA03
12-Bit Charge Balance A/D Converter
74C00 28k 14k 0.003µF 0.01µF CLK OUTPUT (B) 2 15V – 10k 7 OUTPUT 1N4148 CLK Q (A) 6 LT1055 D 74C74 Q 3 + P CL 4 10k –15V 2N3904 1N4148 1N4148 249k* 15V 0V TO 10V INPUT 33k LM329 10k 15V COUPLE 15V THERMALLY 7 – 2 6 CIRCUIT OUTPUT LT1001 f RATIO OUT (A) 4 + 3 fCLK (B) 33k –15V 1N4148 LT1055/56 TA04 10556fd 12 For more information www.linear.com/LT1055 Document Outline Features Applications Typical Application Description Absolute Maximum Ratings Pin Configuration Order Information Electrical Characteristics Typical Performance Characteristics Applications Information Typical Applications Simplified schematic Package Description Revision History Typical Application Related Parts