Features
• Ideal mate for THAT 1580 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
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 recordersDatasheet Download
5173 Datasheet (751 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 1580, 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 1580 — 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 1580 or 1583 Differential Audio Preamplifier ICs. Together, the 1580/5173 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.
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 |
| Model | Package | Order Number | Pricing (1000) | Min Order Quantity | Reference |
| 5173 | 24 pin QFN | 5173N24-U | $5.09 | 73 | Request Samples |
| 24 pin QFN Tape & Reel | 5173N24-UR | Contact us | 2000 | ||
| 1580/5173 Demo Board | — | 1580/5173DEMO | $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. ICs designated -UR are available on tape and reel for a modest increase in price and require an extended lead time. Please contact our sales department for pricing and current lead time. |
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Design Notes (as PDF files)
Design Note 140 Input and Output Circuits for THAT Preamplifier ICs (244k)
| Differential Audio Preamplifiers | ||
| THAT 1580 | Low Noise Differential Audio Preamplifier | 1580 Datasheet |
| THAT 1583 | Low Noise Differential Audio Preamplifier | 1583 Datasheet |
| Gain Controllers | ||
| THAT 5171 | Digital Preamplifier Controller | 5171 Datasheet |
| THAT 5173 | Low-Cost Digital Preamplifier Controller | 5173 Datasheet |
| THAT 5263 | 2 Channel Digital Preamplifier Controller | 5263 Datasheet |
| Digitally Controlled Microphone Preamplifiers | ||
| THAT 1580/5171 | 5171 Digital Microphone Preamplifier Chip Set | |
| THAT 1580/5173 | 5173 Digital Microphone Preamplifier Chip Set | |
| THAT 1583/5173 | 5173 Digital Microphone Preamplifier Chip Set | |
| THAT 1580/5263 | 5263 Digital Microphone Preamplifier Chip Set | |
| THAT 1583/5263 | 5263 Digital Microphone Preamplifier Chip Set | |
| THAT 626X | 626x Dual Programmable-Gain Preamplifier/ADC Driver | 626x Datasheet |
| Audio Preamplifiers | ||
| THAT 1510/1512 | Low Noise Single Ended Output Audio Preamplifiers | 1510/1512 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.
1580/5173 and 1583/5173 Digitally-Controlled Mic Preamp Demo Boards – These 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.