THAT4311 ETC, THAT4311 Datasheet
THAT4311
Related parts for THAT4311
THAT4311 Summary of contents
Page 1
... Dynamic range exceeds 105 dB, and THD is typically 0.09% at 0dB gain. The RMS detector provides accurate RMS to DC conversion over EC- 19 OA1 IN VCA 20 THAT4311 CT 1 RMS IN OUT Figure 1. THAT 4311 equivalent block diagram THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA Tel: +1 508 478 9200 ...
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Page 2 Absolute Maximum Ratings (T Positive Supply Voltage ( Operating Temperature Range ( Max Recommended Operating Conditions Parameter Symbol Positive Supply Voltage V CC Electrical Characteristics Parameter ...
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... R25 18 100k XLR-M 20 OA1 100R U1D 5% + THAT4311 1 2 R18 C18 3 10k0 47u SW1A 2 4 R17 R28 31k6 100R 5% C8 47p SW1B OA2 U1C THAT4311 VREF V+ U1E VREF VCC VREF VREF 8 10u VEE CAP 10 THAT4311 + + C3 C2 22u 10u ...
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Page 4 Representative Data (Stand-alone) Fig 3. VCA Gain vs. Control Voltage (Ec-) at 25°C Fig 5. VCA 1kHz THD+Noise vs. Input, +15 dB Gain Fig 7. VCA THD vs. Frequency gain, 1 Vrms Input Fig 9. Departure ...
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... THAT4311 Vref U1B OUT IN RMS 5 2 Vref 10u TC Iset + THAT4311 C7 R12 10u 261k + C8 22u Page 5 Fig 12. End-to-End THD+N R10 6k19 C9 570p 6 Encoder R31 3 Out _ 7 4k32 OA2 + C10 Vref U1C 4n7 THAT4311 R11A 20k R11B VR1 20k 10k optional ...
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... EC+ and SYM are at VREF . The con- stant of proportionality is -6.1mV/dB (for 5V sup- plies) for the voltage at EC-, and 6.1mV/dB for the voltage at EC+, and SYM Dynamics Processor ® Preliminary Information R7 20k R1 6k04 C1 3n3 R6 24k3 19 _ Decoder Out 18 OA1 20 + U1D 12 THAT4311 + C7 10u ...
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Rev. 08/30/01 Preliminary Information C3 U1B Signal 10k 2 47u Iset THAT 4311 R7 264k + 100n 10 As mentioned, for proper operation, the same voltage must be applied to EC+ and SYM, ...
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Page 8 U1B 4 1 N/C OUT IN N/C RMS 5 2 N/C N/C Iset TC THAT 4311 Control Port Drive Signal 20k 47u +5 U1E C7 Vref 9 11 Vcc Vref 100n 8 10 Cap ...
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... AC input voltage to a current Page 20k 33k 20k R3 C2 51R 47p Vref SYM EC+ U1A R1 Out 17 VCA IN OUT 12 20k OA3 EC- 16 R17 R16 THAT4311 Vref 82k 4k99 C5 100n U1D R15 19 18 OA1 10k 20 THAT4311 Vref + C9 22u ...
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Page 10 within the linear range of the THAT 4311. (Peak VCA input currents should be kept under 250 mA for best distortion performance.) The coupling capacitor (Cl, 47 mF) is strongly recommended to block DC current from preceding stages ...
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Rev. 08/30/01 Preliminary Information this case, OA2's feedback is provided through R9, and the sensitivity at this point is 12.2 mV/dB, since the output of the RMS detector is multiplied by -R9/R8 gain of -2. A threshold control ...
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Page 12 Package Information The THAT 4311 is available in a 20-pin surface mount package. The package dimensions are shown in Fig 20 while the pinout is given in Table ...