PCM2707C datasheet(9/53 Pages) TI2

9 / 53 page

PCM2704C, PCM2705C, PCM2706C, PCM2707C

www.ti.com

SBFS036B – MAY 2015 – REVISED AUGUST 2015

7.6 Electrical Characteristics: PCM2704CDB, PCM2705CDB, PCM2706CPJT, PCM2707CPJT

All specifications at TA = 25°C, VBUS = 5 V, ƒS = 44.1 kHz, ƒIN = 1 kHz, and 16-bit data (unless otherwise noted). For the Host

interface, apply USB revision 1.1, full-speed. For audio data format, use USB isochronous data format.

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

INPUT LOGIC

Input logic high level

3.3

VIH

VDC

Input logic high level(1)

5.5

Input logic low level

–0.3

0.8

VIL

VDC

Input logic low level(1)

–0.3

0.8

Input logic high current(2)

VIN = 3.3 V

±10

IIH

μA

Input logic high current

VIN = 3.3 V

100

Input logic low current(2)

VIN = 0 V

±10

IIL

μA

Input logic low current

VIN = 0 V

±10

OUTPUT LOGIC

Output logic high level(3)

IOH = –2 mA

2.8

VOH

VDC

Output logic high level

IOH = –2 mA

2.4

Output logic low level(3)

IOL = 2 mA

0.3

VOL

VDC

Output logic low level

IOL = 2 mA

0.4

CLOCK FREQUENCY

Input clock frequency, XTI

11.994

12.006

MHz

ƒS

Sampling frequency

44.1

kHz

DAC CHARACTERISTICS

Resolution

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)

THD +

Total harmonic

RL > 10 kΩ, bus-powered,

0.012%

0.02%

distortion + noise

VOUT = 0 dB

RL = 32 Ω, self- or bus-

Headphone

0.025%

powered, VOUT = 0 dB

THD +

Total harmonic distortion + noise

VOUT = –60 dB

Dynamic range

EIAJ, A-weighted

SNR

Signal-to-noise ratio

EIAJ, A-weighted

Channel separation

(1)

HOST pin.

(2)

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

(3)

FUNC0, FUNC1, and FUNC2 pins.

(4)

ƒIN = 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 and R8 in Figure 35.

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