PCM1770

PCM1771

SLES011C – SEPTEMBER 2001 – REVISED MAY 2004

www.ti.com

3

ELECTRICAL CHARACTERISTICS

all specifications at TA = 25°C, VCC = VHP = 2.4 V, fS = 44.1 kHz, system clock = 256 fS and 24-bit data, RL = 16 Ω, unless otherwise noted

PARAMETER

TEST CONDITIONS

PCM1770PW, PCM1771PW,

PCM1770RGA, PCM1771RGA

UNIT

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

Resolution

24

Bits

OPERATING FREQUENCY

Sampling frequency (fS)

5

50

kHz

System clock frequency

128f S, 192 fS, 256 fS, 384 fS

DIGITAL INPUT/OUTPUT(1)(2)

VIH

Input logic level

0.7 VCC

Vdc

VIL

Input logic level

0.3 VCC

Vdc

IIH

Input logic current

VIN = VCC

10

µA

IIL

Input logic current

VIN = 0 V

–10

µA

VOH

Output logic level(3)

IOH = –2 mA

0.7 VCC

Vdc

VOL

Output logic level(3)

IOL = 2 mA

0.3 VCC

Vdc

DYNAMIC PERFORMANCE (HEADPHONE OUTPUT)

Full scale output voltage

0 dB

0.55 VHP

VP-P

Dynamic range

EIAJ, A-weighted

90

98

dB

Signal-to-noise ratio

EIAJ, A-weighted

90

98

dB

THD+N

0 dB (13 mW)

0.1%

THD+N

−20 dB (0.1 mW)

0.04%

0.1%

Output power

Stereo

10

13

mWrms

Output power

Monaural

20

26

mWrms

Channel separation

64

72

dB

Load resistance

14

16

Ω

DC ACCURACY

Gain error

±2

±8 % of FSR

Gain mismatch,

channel-to-channel

±2

±8 % of FSR

Bipolar zero error

VOUT = 0.5 VCC at BPZ

±30

±75

mV

ANALOG LINE INPUT (MIXING CIRCUIT)

Analog input voltage range

0.584 VHP

VP-P

Gain (analog input to headphone

output)

0.67

Analog input impedance

10

k

Ω

THD+N

AIN = 0.56 VHP (peak-to-peak)

0.1%

DIGITAL FILTER PERFORMANCE

Pass band

0.454 fS

Stop band

0.546 fS

Pass-band ripple

±0.04

dB

Stop-band attenuation

–50

dB

Group delay

20/fS

44.1-kHz de-emphasis error

±0.1

dB

(1) Digital inputs and outputs are CMOS compatible.

(2) All logic inputs are 3.3-V tolerant and not terminated internally.

(3) LRCK and BCK terminals