that4320 THAT Corporation, that4320 Datasheet
that4320
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that4320 Summary of contents
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... Low supply current: 3.7mA typ. (5V) · Four opamps · One low-noise opamp (<5nV/rt-Hz) · On board PTAT reference · Wide dynamic range: 120dB as compander The THAT4320 is a single-chip Analog En- gine ® optimized for low-voltage, low-power oper- ation. Incorporating a high-performance voltage- controlled amplifier (VCA), RMS-level sensor, ...
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... Reference is to output offset with -80dB VCA 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 THAT4320 Pre-trimmed Low-voltage Low-power SPECIFICATIONS +18V Power Dissipation (P 30mA Input Voltage -40 to +85 º ...
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... N(IN) Equivalent Input Noise Current i N(IN) Gain Bandwidth Product GBW Slew Rate SR THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Conditions -20 dB < VCA gain < + μa< i < 100 μA IN(RMS) ±7.5mA DC ...
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... VOL 5 Note - OA and the V /2 buffer require a capacitve load for stability THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power Conditions kΩ L Output ...
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... Thermal Resistance JC θ Thermal Resistance JA Soldering Reflow Profile 6 Compressor circuit is as shown in Figure 12, Expander circuit is as shown in Figure 13. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Conditions Output ...
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... REPRESENTATIVE DATA Figure 3. VCA THD vs. Level gain (BW=22KHz) Figure 5. VCA THD vs. Level at -12dB Gain (BW=22KHz) THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power DUTB K4A 4320 OA1 AC/DC IN ...
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... This process produces very high-quality bi- polar transistors (both NPNs and PNPs) with unusu- ally low collector-substrate capacitances. The 4320 THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com Figure 8. VCA Noise vs. Gain (BW=22KHz) Figure 10 ...
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... THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power Finally, as gain approaches 30dB, output noise be- gins to increase directly with gain. ...
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... THAT has applied for patent coverage on this novel approach. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com via an external control. The 4320 will typically bal- ...
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... MHz opamp with moderately low input noise of 10.5 nv/ÖHz. This noise floor complements that of the VCA. THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power and Like OA , because it handles audio signals di- CC ...
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... IC as its VCA and RMS detector, Room tem- temperature tracking between these three compo- nents is excellent. The No Connection Pins Six pins on the THAT4320 (5, 10, 12, 19, 22, and 24) are labeled "No Connection" (N/C). These There is no pins are not internally connected to the 4320 die acceptable to leave these pins unconnected or to connect these pins to some external circuit nodes ...
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... THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power within the headroom limits of the noisy channel. The expander increases the signal back to its origi- nal level ...
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... This requirement applies to the decoder and 10 14 other applications of the THAT4320 as well. The output of the RMS detector is zero volts when the RMS input current is equal to the timing current (internally set to ~7.5 μA). A low-frequency voltage level of -26 dBu was chosen as the desired ...
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... THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power The decoder Figure 13 shows the THAT4320 configured as a 2:1 expander, an arrangement intended to comple- ment the encoder in Figure 12. This circuit is opti- mized for low-voltage operation, as might be the case for a decoder in an in-ear monitoring system which will run from battery power ...
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... This is even more so when the application must run from battery power. The 4320 is versatile enough to be used as the heart of a THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com compressor, expander, noise gate, AGC, de-esser, frequency-sensitive compressor, and many other dy- namics processors ...
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... OA1 V EE Table 1. THAT 4320 pin assignments Model Package 4320 28 Pin QSOP Table 2. Ordering information THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200; Fax: +1 508 478 0990; Web: www.thatcorp.com THAT4320 Pre-trimmed Low-voltage Low-power Package Information ...