THAT Corporation 1583-5171 Digital Microphone Preamplifier Chip Set

THAT 1583/5171 Digitally Controlled Microphone Preamplifier				STATUS Active RoHS Compatible
THAT 1583/5171 Digitally Controlled Microphone Preamplifier
Key Specifications	Packaging/Pricing/ Samples	Design Notes	Related Products	Additional Resources
Features / Applications / Description

FEATURES
• Versatile two-chip solution:
- 1583 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: -125 dBu EIN, 68.8 dB gain, Rs = 150 Ω

• Low THD+N: 0.0007% @ 21 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 (1583)
   7 x 7 mm QFN32 (5171)

Datasheet Download

5171 Datasheet (364 kB)
High Performance Digital Preamplifier Controller

1583 Datasheet (186kB)
Differential Audio Preamplifier

THAT 1583/5171 Digital Microphone Preamp Circuit

DESCRIPTION

The THAT1583 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 (THAT1583) from the digital functions and switched resistor ladder (THAT5171) allows each IC to be optimized for high performance.

Key Specifications (see the 5171 and 1583 datasheets for complete specifications)

Parameter	Conditions	1583/5171 Combination	Units
Supply Voltage		± 17	V
Supply Current	No Signal	7.0 (1583) 8.3 (5171) 15.3 (Total)	mA
Power	@ +/- 5V	153	mW
THD + N	21 dB gain	0.0007	%
Equivalent Input Noise, Rs = 150 Ω	0 dB gain 30 dB gain 60 dB gain	-102 -120 -125	dBu
Max Differential Input	0 dB gain 30 dB gain 60 dB gain	21 -3 -33	dBu
Gain Range		5.6, 13.6 - 68.6 (0, 8 - 63 w/ 5.6 dB attenuation)	dB
Step Size		1	dB
Max Gain Error		Typ: 0.15 Max: 0.5	dB

Packaging / Pricing / Samples

Model	Package	Order Number	Pricing (1000)	Min Order Quantity	Reference
1583	16 pin QFN	1583N16-U	$7.65*	92	Request Samples
1583	16 pin QFN Tape & Reel**	1583N16-UR		2000
5171	32 pin QFN	5171N32-U		52
5171	32 pin QFN Tape & Reel**	5171N32-UR		2000
All 1583 and 5171 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 1583 and 5171 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.

Related Products

Differential Audio Preamplifiers
THAT 1570	Low Noise Differential Audio Preamplifier	1570 Datasheet
THAT 1583	Low Noise Differential Audio Preamplifier	1583 Datasheet
Gain Controllers
THAT 5171	Digital Preamplifier Controller	5171 Datasheet
THAT 5173	Digital Preamplifier Controller	5173 Datasheet
Other Digital Microphone Preamps
THAT 1570-5171	Digitally Controlled Microphone Preamplifier Chip Set
THAT 1570/5173	Digitally Controlled Microphone Preamplifier Chip Set
THAT 1583/5173	Digitally Controlled Microphone Preamplifier Chip Set
Single Ended 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.

1583 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.

THAT 1583/5171 Digitally Controlled Microphone Preamplifier

THAT 1583/5171
Digitally Controlled Microphone Preamplifier