2 x 1.5W, Stereo Class D Audio Subsystem

with DirectDrive Headphone Amplifier

4

_______________________________________________________________________________________

ELECTRICAL CHARACTERISTICS (continued)

(VDD = PVDD = CPVDD = 3.3V, VGND = VPGND = VCPGND = 0V, SHDN = VDD, I2C settings (INA gain = +20dB, INB gain = INC gain =

0dB, volume setting = 0dB, mono path gain = 0dB, SHDN = 1, SSM = 1). Speaker load resistors (RLSP) are terminated between

OUT_+ and OUT_-, headphone load resistors are terminated to GND, unless otherwise noted. C1 = C2 = C3 = 1µF. TA = TMIN to

TMAX, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)

PARAMETER

SYMBOL

CONDITIONS

MIN

TYP

MAX

UNITS

RECEIVER AMPLIFIER

Output Offset Voltage

VOS

TA = +25°C

±1.8

±5.5

mV

Into shutdown

-62

Into mute

-67

Out of shutdown

-63

Click-and-Pop Level

KCP

Peak voltage, TA =

+25°C, A-weighted,

32 samples per

second (Notes 3, 6)

Out of mute

-66

dB

VDD = 2.7V to 5.5V

58

80

f = 217Hz,

100mVP-P ripple

80

f = 1kHz,

100mVP-P ripple

70

Power-Supply Rejection Ratio

(Note 3)

PSRR

TA = +25°C

f = 20kHz,

100mVP-P ripple

62

dB

RL = 16

Ω

60

Output Power

POUT

TA = +25°C,

THD+N = 1%

RL = 32

Ω

50

mW

Gain

AV

3dB

RL = 16

Ω (VOUT = 800mVRMS, f = 1kHz)

0.03

Total Harmonic Distortion Plus

Noise

THD+N

RL = 32

Ω (VOUT = 800mVRMS, f = 1kHz)

0.024

%

BW = 20Hz to 20kHz

87

Signal-to-Noise Ratio

SNR

RL = 16

Ω, VOUT =

800mVRMS (Note 3)

A-weighted

89

dB

Slew Rate

SR

0.3

V/µs

Capacitive Drive

CL

300

pF

HEADPHONE AMPLIFIERS

Output Offset Voltage

VOS

TA = +25°C

±1.8

±5.5

mV

Into shutdown

-61

Into mute

-65

Out of shutdown

-60

Click-and-Pop Level

KCP

Peak voltage, TA =

+25°C, A-weighted,

32 samples per

second (Notes 2, 4)

Out of mute

-64

dB

Contact

±4

ESD Protection

HP_

Air

±8

kV

VDD = 2.7V to 5.5V

58

80

f = 217Hz,

100mVP-P ripple

80

f = 1kHz,

100mVP-P ripple

70

Power-Supply Rejection Ratio

(Note 3)

PSRR

TA = +25°C

f = 20kHz,

100mVP-P ripple

62

dB