Datasheet Texas Instruments PCM1748 — Datenblatt

Hersteller	Texas Instruments
Serie	PCM1748

106 dB SNR Stereo DAC

Datenblätter

PDF, 1.3 Mb, Revision: B, Datei veröffentlicht: Apr 19, 2005

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	PCM1748E	PCM1748E/2K	PCM1748EG/2K	PCM1748EG4	PCM1748KE	PCM1748KE/2K	PCM1748KE/2KG4	PCM1748KEG4
Lifecycle Status	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)	Active (Recommended for new designs)
Manufacture's Sample Availability	No	No	Yes	No	No	Yes	No	No

	PCM1748E	PCM1748E/2K	PCM1748EG/2K	PCM1748EG4	PCM1748KE	PCM1748KE/2K	PCM1748KE/2KG4	PCM1748KEG4
N	1	2	3	4	5	6	7	8
Pin	16	16	16	16	16	16	16	16
Package Type	DBQ	DBQ	DBQ	DBQ	DBQ	DBQ	DBQ	DBQ
Industry STD Term	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP	SSOP
JEDEC Code	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G	R-PDSO-G
Package QTY	75	2000		75	75	2000	2000	75
Carrier	TUBE	LARGE T&R		TUBE	TUBE	LARGE T&R	LARGE T&R	TUBE
Device Marking	PCM	PCM		PCM	1748KE	1748KE	1748KE	1748KE
Width (mm)	3.9	3.9	3.9	3.9	3.9	3.9	3.9	3.9
Length (mm)	4.9	4.9	4.9	4.9	4.9	4.9	4.9	4.9
Thickness (mm)	1.5	1.5	1.5	1.5	1.5	1.5	1.5	1.5
Pitch (mm)	.64	.64	.64	.64	.64	.64	.64	.64
Max Height (mm)	1.75	1.75	1.75	1.75	1.75	1.75	1.75	1.75
Mechanical Data	Herunterladen	Herunterladen	Herunterladen	Herunterladen	Herunterladen	Herunterladen	Herunterladen	Herunterladen

Parameters / Models	PCM1748E	PCM1748E/2K	PCM1748EG/2K	PCM1748EG4	PCM1748KE	PCM1748KE/2K	PCM1748KE/2KG4	PCM1748KEG4
Analog Outputs	2	2		2	2	2	2	2
Approx. Price (US$)			1.35 \| 1ku
Architecture	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma	Delta-Sigma
Control Interface	SPI	SPI	SPI	SPI	SPI	SPI	SPI	SPI
DAC Channels	2	2		2	2	2	2	2
DAC SNR(Typ), dB	100	100		100	100	100	100	100
DAC SNR(Typ)(dB)			100
DACs(#)			2
Operating Temperature Range(C)			-25 to 85
Package Group			SSOP
Package Size: mm2:W x L, PKG	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)		16SSOP: 19 mm2: 3.9 x 4.9(SSOP)	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)	16SSOP: 19 mm2: 3.9 x 4.9(SSOP)
Package Size: mm2:W x L (PKG)			16SSOP: 19 mm2: 3.9 x 4.9(SSOP)
Power Consumption(Typ)(mW)			62
Rating			Catalog
Resolution, Bits	24	24		24	24	24	24	24
Resolution(Bits)			24
Sampling Rate(Max), kHz	96	96		96	96	96	96	96
Sampling Rate(Max)(kHz)			96
THD+N(Typ)(%)			0.002

	PCM1748E	PCM1748E/2K	PCM1748EG/2K	PCM1748EG4	PCM1748KE	PCM1748KE/2K	PCM1748KE/2KG4	PCM1748KEG4
RoHS	Compliant	Compliant	Not Compliant	Compliant	Compliant	Compliant	Compliant	Compliant
Pb Free	No

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A Low Noise, Low Distortion Design for Antialiasing and Anti-Imaging Filters
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In any digitizing system, antialiasing and anti-imaging filters are used to prevent the signal frequencies from folding back around the sample frequency and causing false (or alias) signals from appearing in the signal we are attempting to digitize. Very often, these filters must be very complex, high order analog filters in order to do their job effectively.
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This application bulletin will provide the reader with an understanding of test methods for audio digital-to-analog converters (DACs). In particular, delta-sigma DACs require a special understanding due to the nature of their architecture.
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The following application bulletin describes the theory and actual performance of THD+N versus frequency characteristics for the PCM1717 series which include on-chip digital filters. The contents of this article apply to the PCM1717 and other devices which use the same digital filter architecture and delta-sigma DAC, such as PCM1718, PCM1719, PCM1720, PCM1723, and PCM1727.

Serie: PCM1748 (8)