THAT2181CL08-U THAT Corporation, THAT2181CL08-U Datasheet
THAT2181CL08-U
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THAT2181CL08-U Summary of contents
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... COMPENSATION Input 1 6 Gnd Figure 1. 2181 Series Equivalent Circuit Diagram THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Copyright © 2008, THAT Corporation Blackmer Voltage Controlled Amplifiers THAT 2181A, 2181B, 2181C APPLICATIONS • ...
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... Exposure to absolute maximum rating condi- tions for extended periods may affect device reliability. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com ...
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... Series VCA IN 20k 10u Power Supplies Vcc = +15 V Vee = -15 V Figure 3. 2181 Series Frequency Response vs. Gain THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page 2181A Conditions Min Typ Max Min 1 kHz — ...
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... Figure 5. Simplified Internal Circuit Diagram 4. For more details about the internal workings of the 2181 Series of VCAs, see An Improved Monolithic Voltage-Controlled Amplifier, by Gary K. Hebert (Chief Technology Officer, for THAT Corporation), presented at the 99th convention of the Audio Engineering Society, New York, Preprint number 4055. ...
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... CELL er split in two parts: about 20 μA biases the core transistors (Q1 through Q4), the rest is available for input and output signal current. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Trimming The 2181-Series VCAs are intended to be adjusted for minimum distortion by applying a small variable offset voltage to pin 4, the SYM pin ...
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... Figure 10. 1 kHz THD+Noise vs. Input Level, 0dB Gain Figure 11. 1 kHz THD+Noise vs. Input Level, +15dB Gain Figure 12. 1 kHz THD+Noise vs. Input Level, -15dB Gain THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Figure 13 ...
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... ICs can even operate with signal levels far exceeding the 2181's supply rails, provided appropriately large resistors are used. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Applications ...
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... V supplies. Higher bias levels are of limited value, largely because the core transistors become ineffective at logging and antilogging at currents over 1 mA. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Mathematically, this can be expressed as I ≥ ...
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... IN 10u Power Supplies Vcc = +15 V Vee = -15 V THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page output impedance of an opamp typically rises at high frequencies because open loop gain falls off as frequency increases. A typical opamp's output imped- ance is therefore inductive at high frequencies ...
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... Because the signal levels involved are very small, this problem can be difficult to diagnose. One clue to the presence of this problem is that the symmetry THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page null for minimum THD varies with frequency ...
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... N 17.78 ±0.3 0.700 ±0.012 Figure 16. -L (SIP) Version Package Outline Drawing THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Package Information makes it possible to solder these devices using lead- free and lead-bearing solders ...
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... Document 600030 Rev 02 THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Page Notes Copyright © 2008, THAT Corporation THAT 2181 Series Blackmer® Trimmable IC VCAs ...