submodules

Introduction to ARP submodules A brief tutorial on submodule types and encapsulation schemes. Submodule listing Listed below are submodules used in ARP synthesisers. A brief descritpion of each module is given, as well as information about which synthesiser model(s) the submodule was used in. Some of the more common modules are presented in greater detail by means of downloadable documents.

Designator	Description	Usage	Documents
4001	Exponential Converter Voltage input, dual current output (sink) Temperature compensated	2500 oscillators	N/A
4002	Exponential Converter Voltage input, current output (source) Temperature compensated	2500 oscillators	N/A
4005-1P	Variable Transconductance Cell Differential input (PNP) Linear control current input (sink)	1047 Multimode Filter (2500)	N/A
4005-2N	Variable Transconductance Cell Differential input (NPN) Linear control current input (source) Temperature compensated exponential control voltage input	1047 Multimode Filter (2500)	N/A
4005-3P	Variable Transconductance Cell Differential input (PNP) Linear control current input (sink) Temperature compensated exponential control voltage input	1047 Multimode Filter (2500)	N/A
4010	Voltage Controlled Amplifier Replaced by 4019 module	Early 2600 synthesisers	PDF (11K) Example Application
Designator	Description	Usage	Documents
4011	Voltage Controlled Oscillator Replaced by 4017 module	Early 2600 synthesisers	N/A
4012	Voltage Controlled Filter 4-pole low-pass transistor ladder Temperature compensated exponential control Cut-off frequency range approx. 0 - 35 kHz DC-coupled signal path Replaced by 4072 module	2600 (1970-1976), Soloist	PDF (71K) Schematic, Example Application
4013	Voltage Controlled Filter Similar to 4012 module	Soloist	N/A
4014	Balanced Modulator Dual complementary transconductance cells yield 4-quadrant multiplication DC-coupled signal path	2500 and 2600 synthesisers	PDF (41K) Schematic, Example Application
4015	Sample and Hold	2600 synthesiser	PDF (87K) Schematic, Example Application, Component Layout
4016	White Noise Generator Replaced by 4022 module	Early 2600 synthesisers	N/A
Designator	Description	Usage	Documents
4017	Voltage Controlled Oscillator Temperature compensated exponential control 10 Vpp sawtooth output External HF-tracking trim required Replaced by 4027 module	Early 2600 synthesisers	PDF (18K) Example Application
4018	Waveform Converter Converts sawtooth wave to triangle, sine, and pulse waves	Only sold separately	N/A
4019	Voltage Controlled Amplifier Linear and exponential control inputs DC-coupled signal path Replaces 4010 module	2600 synthesiser	PDF (95K) Schematic, Example Application, Component Layout
4020	Envelope Generator Attack, Decay, Sustain, Release segments RC-exponential slope shapes	2600 synthesiser	PDF (20K) Schematic and Example Application
4022	White Noise Generator 8 Vrms output Replaces 4016 module	2600 synthesiser	PDF (16K) Schematic and Component Layout
4023	Voltage Controlled Filter 2-pole bi-quad design with low-pass output Temperature compensated exponential control	2800 Odyssey ("white-face" and early grey/gold)	PDF (43K) Schematic, Example Application
Designator	Description	Usage	Documents
4027	Voltage Controlled Oscillator Temperature compensated exponential control 10 Vpp sawtooth output Replaces 4017 module, superseded by 4027-1	2600, Soloist	N/A
4027-1	Voltage Controlled Oscillator Temperature compensated exponential control 10 Vpp sawtooth output No HF-track trimming required Replaces 4027 module	2600 synthesiser	PDF (47K) Schematic, Example Application
4030	Fixed Filter Complex filter for "Violin" preset voice	Soloist	N/A
4031	Fixed Filter Complex filter for "Cello" preset voice	Soloist	N/A
4032	Fixed Filter Complex filter bank for "English Horn", "Oboe", "Banjo", preset voices	Soloist	N/A
4033	Fixed Filter Complex filter bank for "Bassoon", "Elec. Bass", "Elec. Piano", preset voices	Soloist	N/A
Designator	Description	Usage	Documents
4034	Voltage Controlled Filter 4-pole low-pass transistor ladder Temperature compensated exponential control	Pro Soloist, Explorer 1	PDF (37K) Schematic
4035	Voltage Controlled Filter 4-pole low-pass transistor ladder Temperature compensated exponential control	2810 Odyssey	PDF (54K) Schematic, Example Application
4072	Voltage Controlled Filter 4-pole low-pass integrator cascade Temperature compensated exponential control Replaces 4012 module Cut-off range limited to approx 12 kHz due to design miscalculation	2600 (1976-1981)	PDF (57K) Schematic, 4012 to 4072 conversion PDF (436K) "Dynamic Filter" patent
4075	Voltage Controlled Filter 4-pole low-pass integrator cascade Temperature compensated exponential control Became the "standard" ARP VCF in 1976-77 Directly replaces 4035 module Cut-off range limited to approx 12 kHz due to design miscalculation	2810-2823 Odyssey, 2310-2323 Axxe, Omni, Omni-2, Pro DGX, Avatar, Quadra	PDF (52K) Schematic, Example Application PDF (436K) "Dynamic Filter" patent

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