THAT Corporation 5173 Digital Preamplifier Controller IC

THAT 5173 Digitally Programmable Gain Controller IC				STATUS Active RoHS Compatible
THAT 5173 Digitally Programmable Gain Controller IC
Key Specifications	Packaging/Pricing/ Samples	Design Notes	Related Products	Additional Resources
Features / Applications / Description

FEATURES
• Ideal mate for THAT 1570 and 1583 preamplifiers

• Wide gain range: 0 to 60 dB in 3 dB steps

• Wide supply range: ±5V to ±17V

• Wide output swing: +27dBu (±17V sup.)

• Wide input swing: +27dBu (±17V sup.)

• Low THD+N: < 0.001% @ 1 kHz; Up to 42 dB gain

• Integrated differential servo minimizes output offset

• Zero-crossing detector minimizes switching noise

• Daisy Chainable SPI interface

• Four general-purpose digital outputs

• Small 5mm x 5mm QFN24 package

Datasheet Download
5173 Datasheet (350 kB)
Audio Preamplifier Digital Controller

DESCRIPTION

The THAT5173 is a digital gain controller for low-noise, analog, differential, current-feedback audio preamplifiers such as the THAT 1570 and 1583. When used in conjunction with an appropriate analog gain block, the 5173 supports digitally control gain from 0dB to 60dB in 3dB steps, while preserving low noise and distortion. It operates from ±5V to ±17V analog supplies, supporting input signal levels as high as +27 dBu (at 0dB gain and ±17V supplies) in combination with the 1570 -- without an input pad. The 5173 includes a differential servo and zero-crossing detector to minimize dc offsets and glitches (zipper noise) during gain adjustments.

The 5173 is controlled via an industry standard serial-peripheral interface (SPI) port. Four General Purpose Outputs (GPOs) can be controlled via this interface. The GPOs may be used to control auxillary functions such as input selectors, filters, mutes, LEDs, relays, etc.

The 5173 was designed to mate perfectly with the THAT 1570 or 1583 Differential Audio Preamplifier ICs. Together, the 1570/5173 or 1583/5173 combination provides a high performance solution for digitally-controllable audio preamplifier applications. However, the 5173 may also be used to control a discrete preamplifier.

APPLICATIONS

• Digitally controlled microphone preamplifiers

• Digitally-controlled instrumentation amplifiers

• Digitally-controlled differential amplifiers

• Audio mixing consoles

• PC audio breakout boxes

• Audio distribution systems

• Digital audio snakes

• Portable audio recorders

Key Specifications (see 5173 datasheet for complete specifications)

Parameter	Conditions	5173 Typical	Units
Analog Supply Voltage	Referenced to AGND	4.75 - 17	V
Digital Supply Voltage	—	3.0 - 3.6	V
Analog Supply Current	No signal	7.6	mA
Digital Supply Current	—	2	µA
Max Differential Input Level	±17 volt supplies, 0 dB gain	27	dBu
Max Differential Output Level	±17 volt supplies	27	dBu
Gain Range Step Size	0 dB < Gain > 60 dB	3	dB
Gain Range Error	All gain settings	±0.2	dB

Packaging / Pricing / Samples

Model	Package	Order Number	Pricing (1000)	Min Order Quantity	Reference
5173	24 pin QFN	5173N24-U	$3.94	46	Request Samples
5173	24 pin QFN Tape & Reel	5173N24-UR	Contact us	2000
1570/5173 Demo Board	—	1570/5173DEMO	$250.00	1
1583/5173 Demo Board	—	1583/5173DEMO	$250.00	1
All 5173 parts are RoHS compliant. Minimum order quantity (MOQ) is one tube or one reel. Parts must be ordered in multiples of the MOQ. Samples are available to qualified applicants. Pricing is subject to change.

Design Notes (as PDF files)

Design Note 140 Input and Output Circuits for THAT Preamplifier ICs (244k)

Related Products

Matching Audio Preamplifiers
THAT 1570	Low Noise Differential Audio Preamplifier	1570 Datasheet
THAT 1583	Low Noise Differential Audio Preamplifier	1583 Datasheet
Other Gain Controllers
THAT 5171	Digital Preamplifier Controller	5171 Datasheet
Digitally Controlled Microphone Preampifiers
THAT 1570/5173	Digital Microphone Preamplifier Chip Set
THAT 1570-5171	Digital Microphone Preamplifier Chip Set
THAT 1583/5173	Digital Microphone Preamplifier Chip Set
THAT 1583/5171	Digital Microphone Preamplifier Chip Set
Audio Preampifiers
THAT 1510/1512	Low Noise Single Ended Output Audio Preamplifiers	1510/1512 Datasheet
Balanced Line Receivers
THAT 1200 Series	InGenius® High CMRR Balanced Line Receivers	1200 Series Datasheet
THAT 1240 Series	Single Channel Balanced Line Receivers	1240 Series Datasheet
THAT 1250 Series	Low-Cost Single Channel Balanced Line Receivers	1250 Series Datasheet
THAT 1280 Series	Dual Channel Balanced Line Receivers	1280 Series Datasheet
THAT 1290 Series	Low-Cost Dual Channel Balanced Line Receivers	1290 Series Datasheet
Balanced Line Drivers
THAT 1606/1646	OutSmarts® Balanced Line Driver	1606/1646 Datasheet

Additional Resources

Digitally Controlled Microphone Preamplifier Selector
A side by side comparison of the features and specifications of our digitally controlled microphone preamplifier chip sets.

1570/5173 and 1583/5173 Digitally-Controlled Mic Preamp Demo Boards - The THAT Digitally-Controlled Mic Preamp Demo Boards (US$250) allow developers to evaluate the performance of the THAT5173 IC. The demo board provides a balanced audio input on a Neutrik "combo" connector with 48V phantom power, and a balanced audio output on XLR and ¼" TRS connectors. The supplied graphical user interface (GUI) controls all functions in the 5173 chip via USB. A prototyping area is available for adding or modifying circuitry. See the 5173 DEMO Datasheet for more information.

5173 Surface Mount Adapter Board - For our integrated circuits which are only available in surface mount packages THAT Corporation offers adapter boards which allow one of these surface-mount ICs to interface to a circuit board via traditional thru-hole mounting. These adapters make it easy for a design engineer to evaluate our surface-mount products on a prototype board without having to employ SMT technology. Adapter boards are available to qualified applicants.

5173 Material Data Declaration Sheet
Material Data Declaration Sheets (MDDS) disclose the hazardous materials in our integrated circuits as required by the European RoHS directive.

THAT 5173 Digitally Programmable Gain Controller IC

THAT 5173
Digitally Programmable Gain Controller IC