TS4604 datasheet(7/31 Pages) STMICROELECTRONICS

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TS4604

Electrical characteristics

Doc ID 17913 Rev 1

7/31

Table 5.

Headset driver part: VCC = +3.3 V, GND = 0 V,

ENHP = VCC, ENLD = GND, CPhp = CPld = 1 µF, Av = 1 (R1 = R2 = 10 kΩ),

Tamb = 25°C (unless otherwise specified)

Symbol

Parameters and test conditions

Min.

Typ.

Max.

Unit

Icc

Supply current (no input signal, no load)

6.5

IENHP

Headset overall standby current (no input signal):

VENHP = GND

VENHP = 38% VCC

100

µA

Vio

Input offset voltage

-7

Headphone output power:

THD + N = 1% max, f = 1 kHz, BW = 22 kHz, RL = 16 Ω

Headphone output power:

THD + N = 1% max, f = 1 kHz, BW = 22 kHz, RL = 32 Ω

THD + N

Total harmonic distortion + noise:

RL = 16 Ω, Po = 60 mW, f = 20 Hz to 20 kHz, BW = 22 kHz

0.05

PSRR

Headphone power supply rejection ratio with AC inputs

grounded: f = 217 Hz,Vripple = 200 mVpp

tWU

Total wake-up time

tSTBY

Standby time

µs

Xtalk

Crosstalk headphone to line:

Pout = 50 mW, RL = 16 Ω, f = 20 Hz to 20 kHz

-100

SNR

Signal-to-noise ratio (A-weighting): RL = 16 Ω, Po = 60 mW

102

CMRR

Common-mode rejection ratio:

f = 20 Hz to 20 kHz, Vic = 200 mVpp

-70

Output voltage noise: f = 20 Hz to 20 kHz, A-weighted

7.6

µVRMS

CL(1)

Capacitive load:

RL = 16 Ω to 100 Ω

RL > 100 Ω

400

100

Higher capacitive loads are possible by adding a serial resistor of 47

Ωin the line driver output.

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