PCM1789 datasheet(4/39 Pages) TI

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ELECTRICAL CHARACTERISTICS: DAC

PCM1789

SBAS451 – OCTOBER 2008.............................................................................................................................................................................................. www.ti.com

All specifications at TA = +25°C, VCC1 = VCC2 = 5 V, VDD = 3.3 V, fS = 48 kHz, SCKI = 512 fS, 24-bit data, and Sampling

mode = Auto, unless otherwise noted.

PCM1789

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

RESOLUTION

Bits

DC ACCURACY

Gain mismatch channel-to-channel

±2.0

±6.0

% of FSR

Gain error

±2.0

±6.0

% of FSR

Bipolar zero error

±1.0

% of FSR

DYNAMIC PERFORMANCE(1)(2)

fS = 48 kHz

–94

–88

Total harmonic distortion + noise

THD+N

VOUT = 0 dB

fS = 96 kHz

–94

fS = 192 kHz

–94

fS = 48 kHz, EIAJ, A-weighted

106

113

Dynamic range

fS = 96 kHz, EIAJ, A-weighted

113

fS = 192 kHz, EIAJ, A-weighted

113

fS = 48 kHz, EIAJ, A-weighted

106

113

Signal-to-noise ratio

SNR

fS = 96 kHz, EIAJ, A-weighted

113

fS = 192 kHz, EIAJ, A-weighted

113

fS = 48 kHz

103

109

Channel separation

fS = 96 kHz

109

fS = 192 kHz

108

ANALOG OUTPUT

Output voltage

Differential

1.6 × VCC1

VPP

Center voltage

0.5 × VCC1

To ac-coupled GND(3)

Ω

Load impedance

To dc-coupled GND(3)

Ω

f = 20 kHz

–0.04

LPF frequency response

f = 44 kHz

–0.18

DIGITAL FILTER PERFORMANCE WITH SHARP ROLL-OFF

Except SCKI = 128 fS and 192 fS

0.454 × fS

Passband (single, dual)

SCKI = 128 fS and 192 fS

0.432 × fS

Passband (quad)

0.432 × fS

Except SCKI = 128 fS and 192 fS

0.546 × fS

Stop band (single, dual)

SCKI = 128 fS and 192 fS

0.569 × fS

Stop band (quad)

0.569 × fS

Passband ripple

< 0.454 × fS, 0.432 × fS

±0.0018

Stop band attenuation

> 0.546 × fS, 0.569 × fS

–75

(1)

In differential mode at VOUTx± pin, fOUT = 1 kHz, using Audio Precision System II, Average mode with 20-kHz LPF and 400-Hz HPF.

(2)

fS = 48 kHz: SCKI = 512 fS (single), fS = 96 kHz : SCKI = 256 fS (dual), fS = 192 kHz : SCKI = 128 fS (quad).

(3)

Allowable minimum input resistance of differential-to-single-ended converter with D-to-S gain = G is calculated as (1 + 2G)/(1 + G) × 5k

for ac-coupled, and (1+ 0.9G)/(1 + G) × 15k for dc-coupled connection; refer to Figure 38 and Figure 39.

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