Low Noise Preamplifier ICs

1580 Low-Noise Differential Audio Preamplifier The THAT1580 is a versatile, high performance current-feedback amplifier suitable for differential microphone preamps and bus summing. The IC comes in a small QFN package, saving PCB space over discrete and other integrated solutions.

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

Audio Preamplifier Selector
	1510	1512		1580	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 %		0.005 %	0.006 %
Bandwidth -3dB  (small signal) 60 dB	3 MHz	1.6 MHz		0.4 MHz	0.19 MHz
Slew Rate	19 V/µs	19 V/µs		53 V/µs	50 V/µs
Supply Voltage Min 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 Digital Audio Preamplifier Selector.

Digitally Programmable Preamplifier 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 THAT1580 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 1580 (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 THAT1580 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 1580 (without an external input pad).

5263 2-Channel Digitally Programmable Gain Controller IC
The THAT5263 is a 2-channel digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT1580 or THAT1583. When used in conjunction with an appropriate analog gain block, the 5263 can set gain from 0 to 60dB in 3dB steps, while preserving low noise and distortion. It supports input signal levels as high as +27.5 dBu (at 0dB gain, ±17V supplies, and 1580) without an external input pad.

Digitally Programmable Preamplifiers

626x Dual Programmable-Gain Preamplifier and ADC Driver IC
The THAT 626x is a family of two-channel “all-in-one” digitally controlled preamplifiers with integrated ADC drivers. Gain is programmable from -8 to +34 dB. These low-power (60 mW) devices can be powered from unipolar (+10 V and +5 V) or bipolar (±5 V) supplies. The 626x family includes three products distinguished primarily by step size.

Digitally-Controlled Preamplifier Chip Sets									All-In-One Digitally-Controlled Preamplifiers
	1580/ 5171	1580/ 5173	1583/ 5173			1580/ 5263	1583/ 5263		6261 (per channel)	6263 (per channel)	6266 (per channel)
Gain Range	5.6, 13.6 - 68.6 dB (0, 8-63dB with/ 5.6 dB attenuation)	0 - 60 dB				0 - 51 dB			42 dB	42 dB	42 dB
Step Size	1 dB	3 dB				6261			1 dB	3 dB	6 dB
Max Gain Error Typ Max	0.15 dB 0.5 dB	0.2 dB 0.5 dB	0.2 dB 0.5 dB		0-39 42-51	±0.5 dB ±1.0 dB	±0.5 dB ±1.0 dB	-38 30-34	±0.2 dB ±0.3 dB	±0.2 dB ±0.3 dB	±0.2 dB ±0.3 dB
EIN, Rs=150Ω 0dB 30dB 60dB	-108 dBu -124 dBu -128 dBu	-106 dBu -122 dBu -127 dBu	-100 dBu -118 dBu -125 dBu		0dB 21dB 51dB	-102.3 dBu -119.5 dBu -128.5 dBu	-95.5 dBu -116 dBu -126.2 dBu		-127 dBu (max gain)	-127 dBu (max gain)	-127 dBu (max gain)
THD+N 21dB	0.0003%	0.0005%	0.0006%		24dB	0.003 %	0.003 %	10 dB -8 dB	0.0015 % 0.05 %	0.0015 % 0.05 %	0.0015 % 0.05 %
Max Input 0dB 30dB 60dB	21 dBu -3 dBu -33 dBu	26 dBu -3 dBu -33 dBu	26.4 dBu -3 dBu -33 dBu		0dB 21dB 51dB	+27.5 dBu -2.3 dBu -23.3 dBu	26.4 dBu -2.3 dBu -23.3 dBu	-8 dB	16.5 dBu	16.5 dBu	16.5 dBu
Supply Voltage	± 5 V to ± 17 V	± 5 V to ± 17 V				± 5 V to ± 17 V			±5V, +5V or +10V	±5V, +5V or +10V	±5V, +5V or +10V
Supply Current	7.9mA (1580) 8.3mA (5171) 16.2mA (Total)	7.9mA (1580) 7.6mA (5173) 15.5mA (Total)	7.0mA (1583) 7.6mA (5173) 14.6mA (Total)			7.9mA (1580) 0.8mA (5263) 8.7mA (Total)	7.0mA (1583) 0.8mA (5263) 7.8mA (Total)		3 mA	3 mA	3 mA
Packages	QFN-16 (1580) QFN-32 (5171)	QFN-16 (1580/1583) QFN-24 (5173)				QFN-16 (1580/1583) QFN-24 (5263)			QFN-48	QFN-48	QFN-48

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