AS3340-HYB ALFA | Alldatasheet
Document overview
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- PDF pages: 4
Technical content
AS “АLFA RPAR” Joint Stock Company ALFA Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv 2018 v.3 1 AS3340-HYB 470 10nF TOP VIEW 4 5 6 7 8 910111213141516 +15V 2 3 FREQ. CNTL. INPUTS LINEAR FM INPUT SOFT SYNC. INPUT0V +5V+15V+15V RR 1.5M1M 10nF 100nF RS 1.8K 470 360K 100K 100K 100K PRECISION MULTIPLIER CF 1nF Q1 A2 - + CM CM + -V+ 4X1X 14.4K 14.4K 1nF -1.3V6.3K BUF - + + - 14.4K 7.2K TRI. TO SAW CONV. HIGH FREQ. TRACK 1nF 20K HARD SYNC. INPUT P .W.M. CNTL. INPUT +12V +10V -5V 51K RT RZ 10K 24K 5.6K 7.4V V+ - TEMPCO GEN AS3340-HYB Voltage Controlled Oscillator (VCO) FEATURES AS3340-HYB - DIP-16 footprint РDIP-16 (300 mil) footprint - Pin-to-pin compatible with AS3340 - Minimum influence of PWM on oscillator
APPLICATIONS
-for electronic synth General Description AS3340-HYB – voltage controlled oscillator proposed for circuits where requirements on influence of PWM signal on frequency are strict. AS3340-HYB is based on AS3345F in QFN-24 with addition of PWM comparator based on similar schematics as internal comparator of AS3340. Such solution greatly minimize frequency modulation by PWM control circuit but allows PWM output be compatible with AS3340. Current consumption from negative and positive source is increased on 1 mA and these issue must be taken into account . All other electrical parameters - according to datasheet AS3340.pdf. For improved stability of frequency Vee= -5 - -6V recommended. AS3340-HYB Pin Information AS3340-HYB Circuit Block and Connection Diagram РDIP-16, Pin No Pin Name Description
1 Scale 1 Scale Adjust 1
2 Scale 2 Scale Adjust 2
3 VEE Negative supply
4 VP Pulse Output
5 VPWM PWM Control Input
6 VHSI Hard Synchronization
7 VHFT High Frequency
8 VSO Sawtooth Output
9 VSSI Soft Synchronization
10 VTO Triangle Output
11 Cap Capacitor
12 GND Ground
13 VLFI Linear FM Input
14 VS Scale
15 VFCI Frequency Control
16 VCC Positive supply
AS “АLFA RPAR” Joint Stock Company ALFA Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv 2018 v.3 2 AS3340-HYB General Description AS3340-HYB – voltage controlled oscillator proposed for circuits where requirements on influence of PWM signal on frequency are strict. AS3340-HYB is based on AS3345F in QFN-24 with addition of PWM comparator based on similar schematics as internal comparator of AS3340. Such solution greatly minimize frequency modulation by PWM control circuit but allows PWM output be compatible with AS3340. Current consumption from negative and positive source is increased on 1 mA and these issue must be taken into account . All other electrical parameters - according to datasheet AS3340.pdf. For improved stability of frequency Vee= -5 - -6V recommended. Absolute Maximum Ratings Voltage Between VCC and VEE Pins +24V, -0,5V Voltage Between VCC and GND Pins +18V, -0,5V Voltage Between VEE and GND Pins -6V, +0,5V Current through Any Pin ±40mA Voltage Between Frequency Control Pin or ±6V Reference Current Pin and GND Pin Voltage Between Multiplier Output Pin and GND Pin +6V, -1V Storage Temperature Range - 55°C to 150°C Operating Temperature Range - 25°C to 75°C Schematic Diagram AS3340-HYB
AS “АLFA RPAR” Joint Stock Company ALFA Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv 2018 v.3 3 AS3340-HYB Stability of Frequency vs PWM Stability of VCO (in percents) is measured on three samples in dependence from Upwm from 0 till 5V. (Ucc=+15 V, Uee=-5 V, Upwm 0 ~ 5 V)
AS “АLFA RPAR” Joint Stock Company ALFA Riga, Latvia www.alfarzpp.lv; alfa@alfarzpp.lv 2018 v.3 4 AS3340-HYB
Package Information
DIMENSIONS (DIP-16 300 Mil footprint) 20,32 10,11 1,27 2,54 0,74 1,5 7,62 1,5 0,5
Revision history
29-Aug-2018 1 Preliminary version 1 04-Sep-2018 2 Preliminary version 2 12-Feb-2019 3 Stability of frequency vs PWM graphs added Device type Package AS3340-HYB DIP-16 300 Mil footprint