THAT1570 Low-Noise, Differential Audio Preamplifier IC
●Gain is adjusted via three external resistors (RA, RB, and RG), making it possible to optimize noise over a wide range of gains. The 1570 supports the tradi- tional approach to gain control (viz., THAT's 1510 or 1512) by fixing RA and RB, and varying RG to control gain. However, the 1570 also supports varying all three resistors simultaneously with a dual-gang potentiometer or a switched resistor network. This flexible approach enables the designer to optimize noise over a wider range of gains than is possible with fixed RA and RB.
●The 1570's differential output simplifies connec- tion to differential input devices such as A/D convert- ers. The part operates from as little as ±5V up through ±18V supplies. Running on ±18V supplies, at unity gain, the part accepts >+28dBu input signals.
●The 1570 is designed to mate perfectly with THAT’s 5171 Digital Preamplifier Controller IC. The part-pair comprises an optimized, digitally controlled audio preamplifier.
●Designed from the ground up in THAT's comple- mentary bipolar dielectric-isolation process and including laser-trimmed Si-Chrome thin-film resistors, the 1570 improves on existing integrated microphone preamps by offering more versatile gain configuration, lower noise at low gains, higher slew rate, and lower distortion.
●FEATURES
■ Low Noise: 1 nV/√Hz input noise (60 dB gain)
■ Low THD+N: 0.0003% ≤ 30 dB gain 0.0008% @ 40 dB gain
■ Low Current: 7.5 mA typ
■ Wide Bandwidth: 4.2MHz @40dB gain
■ High Slew Rate: 53 V/μs
■ Wide Signal Swing: >28.7dBu (±18V supplies)
■ Gain adjustable from 0 to >60 dB
■ Differential output
■ Small 4 x 4mm QFN16 package
■ Mates with THAT5171 Digital Preamplifier Controller IC
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Low-Noise, Differential Audio Preamplifier IC 、 versatile, high performance current-feedback amplifier |
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Datasheet |
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Please see the document for details |
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QFN16;QFN |
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English Chinese Chinese and English Japanese |
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01/12/15 |
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Rev 03 |
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600132 |
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140 KB |
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