Features
• Versatile two-chip solution:
– 1580 Programmable analog gain block
– 5171 Digital gain controller
• Accommodates full pro audio levels
+21 dBu max input @ min gain and ±15V supplies
• Programmable gain:
+5.6 dB, +13.6 ~ 68.6 dB in 1dB steps
• Low Noise: -128 dBu EIN, 68.8 dB gain, Rs = 150 Ω
• Low THD+N: 0.0003% @ 21.6 dB gain
• Integrated servo minimizes dc offset
• Integrated zero crossing detector minimizes zipper noise
• Addressable SPI control interface with
read-back Operates up to 10MHz
• Four general purpose outputs (GPOs)
• Small footprint:
4 x 4 mm QFN16 (1580)
7 x 7 mm QFN32 (5171)
Datasheet Download
| Datasheet Download 5171 Datasheet (362 kB) High Performance Digital Preamplifier Controller 1580 Datasheet (168 kB) Differential Audio Preamplifier |
Demo Board Datasheet & Software Download 5171-DEMO Datasheet ( 2.5 MB PDF file) THAT Mic Pre Demo Software (23 kB ZIP file) |
Description
The THAT1580 and THAT5171 ICs enable digitally controlled microphone preamplifier applications with unprecedented performance. Operating on maximum ±17V supplies, the chipset accepts pro audio input levels (+22dBu max) without an input pad. Gain is adjustable to 5.6dB, and from 13.6dB to 68.6dB in 1dB increments. The 5171’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 1.5 mV.
Four general purpose outputs on the 5171 can be connected to a variety of peripheral functions, e.g. input pad, phantom power switches, signal routing switches, LED indicators, etc. The addressable SPI interface on the 5171 supports read-back, enabling fault-tolerant control software to verify proper operation. Separating the analog mic pre front end (THAT1580) from the digital functions and switched resistor ladder (THAT5171) allows each IC to be optimized for high performance.
Key Specifications(see 5171 datasheet for complete specifications)
| Parameter | Conditions | 1570/5171 Combination |
Units |
| Analog Supply Voltage | Referenced to AGND | 5 – 17 | V |
| Digital Supply Voltage | Referenced to DGND | 3.0 – 3.6 | V |
| Analog Supply Current | No Signal | 15.8 | mA |
| Digital Supply Current | No Signal | 2 | uA |
| Max Differential Input Level | — | 21 | dB |
| Max Differential Output Level | — | 27 | dB |
| Equivalent Input Noise, Rs = 150 Ω | 0 dB gain 30 dB gain 60 dB gain |
-108 -124 -128 |
dBu |
| THD + N | 0 dB gain 30 dB gain 60 dB gain |
0.0006 0.0005 0.006 |
% |
| Bandwidth (small signal) | 0 dB gain 30 dB gain 60 dB gain |
6 1.7 170 |
MHz MHz kHz |
| Slew Rate | — | 53 | V/µs |
| Dynamic Range | Power supply voltage: ±17V 0 dB gain 30 dB gain 60 dB gain |
127 121 95 |
dB |
Gain settings include 5.6 dB output attenuator
| Model | Package | Order Number | Pricing (1000) | Min Order Quantity | Reference |
| 1580 | 16 pin QFN | 1570N16-U | $10.68* | 92 | Request Samples |
| 16 pin QFN Tape & Reel** | 1570N16-UR | 2000 | |||
| 5171 | 32 pin QFN | 5171N32-U | 50 | ||
| 32 pin QFN Tape & Reel** | 5171N32-UR | 2000 | |||
| 1580/5171 Demo Board | — | 1580/5171DEMO | $250.00 | 1 | |
|
All 1570 and 5171 parts are RoHS compliant. Minimum order quantity (MOQ) is one tube or one reel per part. Parts must be ordered in multiples of the MOQ. Samples are available to qualified applicants. Pricing is subject to change. * Price when 1580 and 5171 are purchased as a pair. Pricing varies when purchased separately. 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)
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.
1570/5171 Digitally-Controlled Mic Preamp Demo Board – The THAT 1570/5171 Digitally-Controlled Mic Preamp Demo Board (US$250) allows developers to evaluate the performance of the THAT1570 / THAT5171 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 5171 chip via USB. A prototyping area is available for adding or modifying circuitry. See the 1570/5171 DEMO User’s Guide for more information.
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.
5171 Material Data Declaration Sheet
Material Data Declaration Sheets (MDDS) disclose the hazardous materials in our integrated circuits as required by the European RoHS directive.