PCM1795DB datasheet(4/58 Pages) TI

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PCM1795

SLES248 – MAY 2009 ........................................................................................................................................................................................................ www.ti.com

ELECTRICAL CHARACTERISTICS (continued)

All specifications at TA = +25°C, VCC1 = VCC2L = VCC2R = 5 V, VDD = 3.3 V, fS = 48 kHz, system clock = 256 fS, and 32-bit

data, unless otherwise noted.

PCM1795 DB

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

DYNAMIC PERFORMANCE (MONO MODE)(3)(4)(5)

fS = 48 kHz

0.0005

THD+N at VOUT = 0 dB

fS = 96 kHz

0.001

fS = 192 kHz

0.0015

EIAJ, A-weighted, fS = 48 kHz

126

Dynamic range

EIAJ, A-weighted, fS = 96 kHz

126

EIAJ, A-weighted, fS = 192 kHz

126

EIAJ, A-weighted, fS = 48 kHz

126

Signal-to-noise ratio

EIAJ, A-weighted, fS = 96 kHz

126

EIAJ, A-weighted, fS = 192 kHz

126

DSD MODE DYNAMIC PERFORMANCE (44.1 kHz, 64 fS)

(3) (6)

THD+N at FS

2 V rms

0.0007

Dynamic range

–60 dB, EIAJ, A-weighted

122

Signal-to-noise ratio

EIAJ, A-weighted

122

ANALOG OUTPUT

Gain error

–7

±2

% of FSR

Gain mismatch, channel-to-channel

–3

±0.5

% of FSR

Bipolar zero error

At BPZ

–2

±0.5

% of FSR

Output current

Full-scale (0 dB)

mAPP

Center current

At BPZ

–3.5

DIGITAL FILTER PERFORMANCE

De-emphasis error

±0.1

FILTER CHARACTERISTICS–1: SHARP ROLL-OFF

±0.0002 dB

0.454

Passband

–3 dB

0.49

Stop band

0.546

Passband ripple

±0.0002

Stop-band attenuation

Stop band = 0.546 fS

–98

Delay time

38/fS

FILTER CHARACTERISTICS–2: SLOW ROLL-OFF

±0.001 dB

0.21

Passband

–3 dB

0.448

Stop band

0.79

Passband ripple

±0.001

Stop-band attenuation

Stop band = 0.732 fS

–80

Delay time

38/fS

(3)

Filter condition:

THD+N: 20-Hz high-pass filter (HPF), 20-kHz AES17 low-pass filter (LPF)

Dynamic range: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted

Signal-to-noise ratio: 20-Hz HPF, 20-kHz AES17 LPF, A-weighted

Channel separation: 20-Hz HPF, 20-kHz AES17 LPF

Analog performance specifications are measured using the System Two™ Cascade audio measurement system by Audio Precision™ in

the averaging mode.

(4)

Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 52.

(5)

Dynamic performance and dc accuracy are specified at the output of the measurement circuit as shown in Figure 54.

(6)

Dynamic performance and dc accuracy are specified at the output of the post-amplifier as shown in Figure 53.

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