NXP Semiconductors TFA9812 - Manual (Page 45)

TFA9812_2 © NXP B.V. 2009. All rights reserved.
Preliminary data sheet Rev. 02 — 22 January 2009 45 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplifier with I 2 S input
V
OH
HIGH-level output
voltage At I
OH
=
−
0.4 mA V
DDD(3V3)
−
0.4 V - - V
V
OL
LOW-level output
voltage At I
OL
= 4 mA - - 400 mV
C
L
load capacitance - - 50 pF
SDA/MS, SCL/SFOR pin
V
IH
HIGH-level input
voltage With respect to V
SS2
0.7
×
V
DDD(3V3)
- 5.5 V
V
IL
LOW-level input
voltage With respect to V
SS2
−
0.3 - 0.3
×
V
DDD(3V3)
V
V
hys(i)
input hysteresis
voltage With respect to V
SS2
0.1
×
V
DDD(3V3)
- - V
C
i
input capacitance - - 2.5 pF
V
OL
LOW-level output
voltage At I
OL
= 3 mA - - 400 mV
ENABLE, GAIN, CSEL, ADSEL2/PLIM2, ASEL1/PLIM1 pin
V
IH
HIGH-level input
voltage With respect to V
SS2
0.7
×
V
DDD(3V3)
- - V
V
IL
LOW-level input
voltage With respect to V
SS2
- 0.3
×
V
DDD(3V3)
V
V
hys(i)
input hysteresis
voltage With respect to V
SS2
0.1
×
V
DDD(3V3)
- - V
I
I
input current - 50 93
µ
A
Regulators
V
o
output voltage STAB1
−
V
SS1
10 11 12 V
STAB2
−
V
SS1
10 11 12 V
STABA
−
REFA 1.65 1.8 1.95 V
STABD
−
REFD 1.65 1.8 1.95 V
CDELAY pin
V
CDELAY
voltage on pin
CDELAY Relative to positive
analog power supply - V
DDA
−
1 - V
Crystal pins
V
o(xtal)(p-p)
peak-to-peak crystal
oscillator output
voltage With respect to V
SS2
- 1.8 - V
AVOL pin
V
i
input voltage Mute level, with respect
to V
SS2
0.77 0.8 0.83 V
0 dB level with respect
to V
SS2
2.74 2.8 2.86 V
I
I
input current - - 1
µ
A
Table 55. DC characteristics …continued
Unless specified otherwise, V
DDA
= V
DDP
= 12 V, V
SSP1
= V
SSP2
= 0 V, 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 Condition Min Typ Max Unit