TAS2521

SLAS687A – FEBRUARY 2013 – REVISED FEBRUARY 2013

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Electrical Characteristics (continued)

PLL = Off

PARAMETER

TEST CONDITIONS

MIN

TYP

MAX

UNIT

ANALOG BYPASS TO CLASS-D SPEAKER AMPLIFIER

BTL measurement, DRIVER GAIN = 6 dB, LOAD

Device Setup

= 4

Ω (DIFFERENTIAL), 50 pF, input signal

frequency fi = 1 KHz

Voltage Gain

Input common-mode = 0.9 V

4

V/V

Gain Error

-1dBFS (446mVrms), 1-kHz input signal

±0.7

dB

Idle channel, IN1L and IN1R ac-shorted to ground,

ICN

Idle channel noise

32.6

μVms

THD+N

Total harmonic distortion + noise

-1 dBFS (446mVrms), 1-kHz input signal

-73.7

dB

LOW DROPOUT REGULATOR (AVDD)

AVDD Output Voltage 1.8V

1.79

V

50mA

1.79

V

50mA

1.79

V

50mA

Output Voltage Accuracy

SPVDD = 2.7V

±2

%

Load Regulation

SPVDD = 2.7V, 0A to 50mA

7

mV

Line Regulation

Input Supply Range 2.7V to 5.5V

0.6

mV

Decoupling Capacitor

1.0

uF

Bias Current

55

uA

Noise @0A Load

A-weighted, 20Hz to 20kHz bandwidth

166

uV

Noise @50mA Load

A-weighted, 20Hz to 20kHz bandwidth

174

uV

SHUTDOWN POWER CONSUMPTION

Power down POR, /RST held low, AVDD = 1.8V,

Device Setup

IOVDD = 1.8 V, SPKVDD = 4.2 V, DVDD = 1.8 V

I(AVDD)

1.32

µA

I(DVDD)

0.04

µA

I(IOVDD)

0.68

µA

I(SPKVDD)

2.24

µA

DIGITAL INPUT/OUTPUT

Logic family

CMOS

0.7 ×

IOVDD

V

IOVDD

0.3 ×

–0.3

IOVDD

Logic level

V

0

0.8 ×

V

IOVDD

0.25

V

Capacitive load

10

pF

(1)

Ratio of output level with 1-kHz full-scale sine-wave input, to the output level with the inputs short-circuited, measured A-weighted over a

20-Hz to 20-kHz bandwidth using an audio analyzer.

(2)

All performance measurements done with 20-kHz low-pass filter and, where noted, A-weighted filter. Failure to use such a filter may

result in higher THD+N and lower SNR and dynamic range readings than shown in the Electrical Characteristics. The low-pass filter

removes out-of-band noise, which, although not audible, may affect dynamic specification values.

8

ELECTRICAL SPECIFICATIONS

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