Features
• Versatile two-chip solution:
– 1570 Programmable analog gain block
– 5173 Digital gain controller
• Accommodates full pro audio levels
+27 dBu max input with ±17V supplies
• Programmable gain: 0 to 60 dB in 3 dB steps
• Low Noise: -127 dBu EIN, 60 dB gain, Rs=150 Ω
• Low THD+N: < 0.001% @ 1kHz, Up to 42 dB gain
• Integrated servo minimizes output offset
• Integrated zero crossing detector minimizes switching noise
• Daisy Chainable SPI control interface
• Four general purpose outputs (GPOs)
• Small footprint:
4 x 4 mm QFN16 (1570)
5 x 5 mm QFN24 (5173)
Datasheet Download
Product Datasheets Download
5173 Datasheet (350 kB)
Digital Mic Preamp Controller
1570 Datasheet (142kB)
Differential Audio Preamplifier
Demo Board Datasheet & Software
5173-DEMO Datasheet
(940 kB PDF file)
5173-DEMO Software
(3 MB ZIP file)
Description
The THAT1570 and THAT5173 ICs enable digitally controlled microphone preamplifier applications with unprecedented performance. Operating on maximum ±17V supplies, the chipset accepts pro audio input levels (+27dBu max) without an input pad. Gain is adjustable from 0dB to 60dB in 3dB increments. The 5173’s built-in zero-crossing detector and other patent-pending techniques for reducing zipper noise enable very smooth and silent gain changes. A differential servo reduces output offsets to less than 1.75 mV.
Four general purpose outputs on the 5173 can be connected to a variety of peripheral functions, e.g. input pad, phantom power switches, signal routing switches, LED indicators, etc. Separating the analog mic pre front end (THAT1570) from the digital functions and switched resistor ladder (THAT5173) allows each IC to be optimized for high performance.
Key Specifications (see 5173 datasheet for complete specifications)
| Parameter | Conditions | 1570/5173Combination | Units |
| Analog Supply Voltage | Referenced to AGND | ±5 to ±17 | V |
| Digital Supply Voltage | Referenced to DGND | 3.3 | V |
| Analog Supply Current | No Signal | 15.1 | mA |
| Digital Supply Current | No Signal | 2 | uA |
| Max Differential Input Level | ±17 volt supplies, 0 dB gain | 27 | dBu |
| Max Differential Output Level | ±17 volt supplies | 27 | dBu |
| Equivalent Input Noise, Rs = 150 Ω | 0 dB gain 30 dB gain 60 dB gain | -106 -122 -127 | dBu |
| THD + N | 0 dB gain 30 dB gain 60 dB gain | 0.001 0.001 0.005 | % |
| Bandwidth (small signal) | 0 dB gain 30 dB gain 60 dB gain | 8 2 200 | MHz MHz kHz |
| Slew Rate | — | 53 | V/µs |
| Dynamic Range | Power supply voltage: ±17V 0 dB gain 30 dB gain 60 dB gain | 133 119 94 | dB |
| Model | Package | Order Number | Pricing (1000) | Min Order Quantity | Reference |
| 1570 | 16 pin QFN | 1570N16-U | $7.86* | 92 | Request Samples |
| 16 pin QFN Tape & Reel** | 1570N16-UR | 2000 | |||
| 5173 | 24 pin QFN | 5173N24-U | 46 | ||
| 24 pin QFN Tape & Reel** | 5173N24-UR | 2000 | |||
| 1570/5173 Demo Board | — | 1570/5173DEMO | $250.00 | 1 | |
| All 1570 and 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.* Price when 1570 and 5173 are purchased as a pair. Pricing varies when purchased separately.**There is a small additional charge for tape and reel packaging. | |||||
Design Notes (as PDF files)
Design Note 140 Input and Output Circuits for THAT Preamplifier ICs (244k)
More Analog Secrets Your Mother Never Told You (915k)
At the 127th AES Convention attendees were invited to attend a THAT exhibitor seminar — “More Analog Secrets Your Mother Never Told You”. A sequel to our popular first “Analog Secrets” seminar, this new presentation exposes more design secrets including “extreme performance” microphone preamps, protecting audio inputs/outputs during phantom power faults, and maintaining high dynamic range in low cost applications.
| 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.
1570/5173 Digitally-Controlled Mic Preamp Demo Board – The THAT 1570/5173 Digitally-Controlled Mic Preamp Demo Board (US$250) allows developers to evaluate the performance of the THAT1570 / THAT5173 chipset. 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.
1570 and 5173 Surface Mount Adapter Boards – 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.
1570 Material Data Declaration Sheet
Material Data Declaration Sheets (MDDS) disclose the hazardous materials in our integrated circuits as required by the European RoHS directive.
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.