NXP Semiconductors TFA9812 4. Quick reference data

TFA9812_2 © NXP B.V. 2009. All rights reserved.
Preliminary data sheet Rev. 02 — 22 January 2009 3 of 66
NXP Semiconductors TFA9812
BTL stereo Class-D audio amplifier with I2S input
4. Quick reference data
[1] IPis the current through the analog supply voltage (VDDA) pin added to the current through the power supply
voltage (VDDP) pin.
Table 1. Quick reference table
Unless specified otherwise, V
DDA
=V
DDP
=12V,V
SSP1
=V
SSP2
=0V,V
DDA(3V3)
=V
DDD(3V3)
= 3.3 V,
V
SS1
=V
SS2
= REFD = REFA = 0 V, T
amb
=25 ° C, R
L
=8 Ω ,f
i
= 1 kHz, f
s
= 44.1 kHz, f
sw
= 400 kHz,
24-bit I
2
S input data, MCLK clock mode, typical application diagram (Figure 13).
Symbol Parameter Conditions Min Typ Max Unit
General
VDDA analog supply
voltage 81220V
VDDP power supply
voltage 81220V
VDDA(3V3) analog supply
voltage (3.3 V) 3.0 3.3 3.6 V
VDDD(3V3) digital supply
voltage (3.3 V) 3.0 3.3 3.6 V
IPsupply current soft mute mode, with load,
filter and snubbers
connected
[1] -3845mA
sleep mode [1] - 160 270 µA
IDDA(3V3) analog supply
current (3.3 V) operating mode
I2S slave mode - 2 4 mA
I2S master mode - 4 6 mA
sleep mode
VDDA =V
DDP = 12 V - 120 - µA
VDDA =V
DDP = 1 V - 40 70 µA
IDDD(3V3) digital supply
current (3.3 V) operating mode
I2S slave mode - 15 25 mA
I2S master mode - 25 40 mA
sleep mode;
DATA = WS = BCK =
MCLK = 0 V
-430µA
Po(RMS) RMS output power Continuous time output power per channel; THD = 10 %;
RL=8Ω
VDDA = VDDP = 12 V - 8.3 - W
VDDA = VDDP = 13.5 V - 10 - W
VDDA = VDDP = 15 V - 12 - W
Short time (≤10 s) output power per channel; THD = 10 %;
RL=8Ω
VDDA = VDDP = 17 V - 15 - W
ηpo output power
efficiency RL=8Ω; Po(RMS) = 8.3 W - 88 - %