PCM2704C datasheet(3/41 Pages) TI1

Part #	PCM2704C

Description	Stereo Audio DAC with USB Interface Single-Ended Headphone Output and S/PDIF Output

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Manufacturer	TI1 [Texas Instruments]

Direct Link	http://www.ti.com

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PCM2704C, PCM2705C

PCM2706C, PCM2707C

www.ti.com

SBFS036A – AUGUST 2011 – REVISED JULY 2012

ELECTRICAL CHARACTERISTICS

All specifications at TA = +25°C, VBUS = 5 V, fS = 44.1 kHz, fIN = 1 kHz, and 16-bit data (unless otherwise noted).

PCM2704CDB, PCM2705CDB

PCM2706CPJT, PCM2707CPJT

PARAMETER

TEST CONDITIONS

UNIT

MIN

TYP

MAX

DIGITAL INPUT/OUTPUT

Host interface

Apply USB revision 1.1, full-speed

Audio data format

USB isochronous data format

INPUT LOGIC

VIH

2

3.3

VIL

–0.3

0.8

Input logic level

VDC

VIH

(1)

2

5.5

VIL

(1)

–0.3

0.8

IIH

(2)

VIN = 3.3 V

±10

IIL

(2)

VIN = 0 V

±10

Input logic current

μA

IIH

VIN = 3.3 V

65

100

IIL

VIN = 0 V

±10

OUTPUT LOGIC

VOH

(3)

IOH = –2 mA

2.8

VOL

(3)

IOL = 2 mA

0.3

Output logic level

VDC

VOH

IOH = –2 mA

2.4

VOL

IOL = 2 mA

0.4

CLOCK FREQUENCY

Input clock frequency, XTI

11.994

12

12.006

MHz

fS

Sampling frequency

32, 44.1, 48

kHz

DAC CHARACTERISTICS

Resolution

16

Bits

Audio data channel

1, 2

Channel

DC ACCURACY

Gain mismatch, channel-to-channel

±2

±8

% of FSR

Gain error

±2

±8

% of FSR

Bipolar zero error

±3

±6

% of FSR

DYNAMIC PERFORMANCE (4)

RL > 10 kΩ, self-powered,

0.006

0.01

%

VOUT = 0 dB

Line (5)

Total harmonic

RL > 10 kΩ, bus-powered,

THD+N

0.012

0.02

%

distortion + noise

VOUT = 0 dB

RL = 32 Ω, self-/

Headphone

0.025

%

bus-powered, VOUT = 0 dB

THD+N

Total harmonic distortion + noise

VOUT = –60 dB

2

%

Dynamic range

EIAJ, A-weighted

90

98

dB

SNR

Signal-to-noise ratio

EIAJ, A-weighted

90

98

dB

Channel separation

60

70

dB

(1)

HOST pin.

(2)

D+, D–, HOST, TEST, TEST0, TEST1, DT, PSEL, FSEL, XTI pins.

(3)

FUNC0, FUNC1, FUNC2 pins.

(4)

fIN = 1 kHz, using the System Two™ Cascade audio measurement system by Audio Precision™ in RMS mode with a 20-kHz low-pass

filter (LPF) and 400-Hz high-pass filter (HPF).

(5)

THD+N performance varies slightly, depending on the effective output load, including dummy load R7, R8 in Figure 34.

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Product Folder Link(s): PCM2704C PCM2705C PCM2706C PCM2707C

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