TAS2553_15 datasheet(5/58 Pages) TI

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TAS2553

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SLAS978B – SEPTEMBER 2013 – REVISED FEBRUARY 2014

6.5 Electrical Characteristics

VBAT = 3.6 V, AVDD = IOVDD = 1.8 V, EN = IOVDD, SWS = 0, Gain = 15 dB, ERC = 14 ns, RL = 8 Ω + 33 µH, 48 kHz

sample rate for digital input (unless otherwise noted)

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

BOOST CONVERTER

Average voltage (w/o including ripple).

Boost Output Voltage

Includes load regulation (0-0.6A) and line

7.5

regulation (VBAT = 3.0 – 4.8V).

Boost Converter Switching Frequency

1.8

MHz

CLASS-D CHANNEL

Max Analog Input

For THD+N < 1%

VRMS

Full-Scale DAC Output

All digital interface modes

VRMS

Load Resistance (Load Spec

Reisistance)

Class-D Frequency

764

kHz

VBAT = 3.0 – 4.8 V, Pout = 1 W

Class-D + Boost Efficiency

67%

(sinewave)

Class-D Output Current Limit (Short

VBOOST = 7.5 V, OUT– shorted to VBAT

3.7

Circuit Protection)

or VBOOST

VBAT = 3.6 V, AV = 15 dB, RL = 8

Ω,

Class-D Output Offset Voltage in

input shorted to ground through single

-7.4

4.6

Analog Input Mode

capacitor

Class-D Output Offset Voltage in

VBAT = 3.6 V, AV = 15 dB, RL =8

Ω, 0's

-9.8

5.6

Digital Input Mode

data

Programmable Channel Gain Range

Typical value, analog and digital input

-7

(PGA + class-D), minimum

Programmable Channel Gain Range

Typical value, analog and digital input

(PGA + class-D), maximum

Programmable Channel Gain Step

Typical value, analog and digital input

(PGA + class-D)

Mute Attenuation

Device in shutdown, digital input only

103

Ripple of 200mVpp @ 217 Hz, Gain = 15

dB, analog and digital input

VBAT Power Supply Rejection Ratio

Ripple of 200mVpp @ 1 kHz, Gain = 15

(PSRR)

dB, analog and digital input

Ripple of 200mVpp @ 4 kHz, Gain = 15

dB, analog and digital input

Ripple of 200mVpp @ 217 Hz, Gain = 15

dB, analog and digital input

AVDD Power Supply Rejection Ratio

Ripple of 200mVpp @ 1 kHz, Gain = 15

(PSRR)

dB, analog and digital input

Ripple of 200mVpp @ 4 kHz, Gain = 15

dB, analog and digital input

Ripple of 200mVpp @ 217 Hz, Gain = 15

Common Mode Rejection Ratio

dB, analog input

1 kHz, Po = 0.1W, VBAT = 3.6 V,

0.6%

RL = 8

1 kHz, Po = 0.5W, VBAT = 3.6 V,

0.7%

THD+N

RL = 8

1 kHz, Po = 1 W, VBAT = 3.6 V, RL = 8

0.9%

1 kHz, Po = 2 W, VBAT = 3.6 V, RL = 8

1.3%

A-wt Filter, Gain = 15 dB, DAC modulator

131%

switching

Output Integrated Noise (20Hz-20kHz)

µV

- 8

A-wt Filter, Gain = 15 dB, Analog In,

173%

Inputs shorted

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