Low Noise Preamplifier ICs

THAT Corporation offers a family of self-contained low noise amplifiers intended primarily for use in professional audio applications. These parts offer great performance at a price that makes them an attractive, space-saving alternative to conventional op-amps. These ICs live up to THAT's usual high performance standards with very low noise, very wide bandwidth and low current requirements.

1510/1512 High Performance Audio Preamplifiers
The THAT 1510 and 1512 are high performance current-feedback instrumentation amplifiers designed for low source-impedance preamp and bus summing applications. The ICs are available in a variety of packages and pin configurations, making them pin compatible with the Analog Devices SSM2019 and SSM2017 (discontinued), and the Texas Instruments INA217 and INA163.

1570 Low-Noise Differential Audio Preamplifier
The THAT1570 is a versatile, high performance current-feedback amplifier suitable for differential microphone preamp and bus summing applications. The IC comes in a small QFN package, which saves PCB space over discrete and other integrated solutions.

1583 Low-Noise Differential Audio Preamplifier
The THAT1583 is a current-feedback amplifier with very good performance suitable for differential microphone preamp and bus summing applications. The IC comes in a small QFN package, which saves PCB space over discrete and other integrated solutions.

Audio Preamplifier Selector
	1510	1512	1570	1583
Industry Std Pinout	Yes	Yes	No	No
Feedback Configuration	Fixed	Fixed	Flexible	Flexible
Output Configuration	Single-ended	Single-ended	Differential	Differential
EIN0dB,Rs=0Ω 60dB,Rs=0Ω 60dB,Rs=150Ω	-99.7 dBu -134.8 dBu -128.9 dBu	-104.1 dBu -134.8 dBu -128.9 dBu	-109.4 dBu -134.8 dBu -128.9 dBu	-102.8 dBu -128.9 dBu -126.5 dBu
THD+N60 dB	0.005 %	0.008 %	0.006 %	0.006 %
Bandwidth -3dB60 dB  (small signal)	3 MHz	1.6 MHz	0.6 MHz	0.19 MHz
Slew Rate	19 V/µs	19 V/µs	53 V/µs	50 V/µs
Supply VoltageMin Max	± 5 V ± 20 V	± 5 V ± 20 V	± 5 V ± 18 V	± 5 V ± 18 V
Packages	SO-8, DIP-8 SO-14, SO16-Wide	SO-8, DIP-8 SO-14	QFN-16	QFN-16

For a printable PDF version of the chart above click here: THAT Audio Preamplifier Selector.

Digitally Programmable Preamp Controllers

5171 Digitally Programmable Gain Controller IC
The THAT5171 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT1570 or THAT1583. When used in conjunction with an appropriate analog gain block, the 5171 can set gain to 5.6dB, or any gain from 13.6dB to 68.6dB in 1dB steps, while preserving low noise and distortion. It supports input signal levels as high as +22 dBu (at 5.6dB gain, and ±17V supplies) in combination with the 1570 (without an external input pad).

5173 Low-Cost Digitally Programmable Gain Controller IC
The THAT5173 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT1570 or THAT1583. When used in conjunction with an appropriate analog gain block, the 5173 can set gain from 0 to 60dB in 3dB steps, while preserving low noise and distortion. It supports input signal levels as high as +27 dBu (±17V supplies) in combination with the 1570 (without an external input pad).

Digitally Controlled Microphone Preamplifier Chip Sets
	1570/ 5171	1570/ 5173	1583/ 5171	1583/ 5173
Gain Range	5.6, 13.6 - 68.6 dB (0, 8-63dB with/ 5.6dB attenuation)	0 - 60 dB	5.6, 13.6 - 68.6 dB (0, 8-63dB with/ 5.6dB attenuation)	0 - 60 dB
Step Size	1 dB	3 dB	1 dB	3 dB
Max Gain ErrorTyp Max	0.15 dB 0.5 dB	0.2 dB 0.5 dB	0.15 dB 0.5 dB	0.2 dB 0.5 dB
EIN0dB, Rs=150Ω 30dB,Rs=150Ω 60dB,Rs=150Ω	-108 dBu -124 dBu -128 dBu	-106 dBu -122 dBu -127 dBu	-102 dBu -120 dBu -125 dBu	-100 dBu -118 dBu -125 dBu
THD+N21 dB	0.0003 %	0.0005 %	0.0007 %	0.0006 %
Max Input0 dB 30dB 60dB	21 dBu -3 dBu -33 dBu	27 dBu -3 dBu -33 dBu	21 dBu -3 dBu -33 dBu	26.4 dBu -3 dBu -33 dBu
Supply Voltage	± 17 V	± 17 V	± 17 V	± 17 V
Supply Current	7.5 mA (1570) 8.3 mA (5171) 15.8 mA (Total)	7.5 mA (1570) 7.6 mA (5173) 15.1 mA (Total)	7.0 mA (1583) 8.3 mA (5171) 15.3 mA (Total)	7.0 mA (1583) 7.6 mA (5173) 14.6 mA (Total)
Packages	QFN-16 (1570) QFN-32 (5171)	QFN-16 (1570) QFN-24 (5173)	QFN-16 (1583) QFN-32 (5171)	QFN-16 (1583) QFN-24 (5173)

For a printable PDF version of the chart above click here: THAT Audio Preamplifier Selector.