参数资料
型号: TFA9812HN
厂商: NXP SEMICONDUCTORS
元件分类: 音频/视频放大
英文描述: 15 W, 2 CHANNEL, AUDIO AMPLIFIER, PQCC48
封装: 7 X 7 MM, 0.85 MM HEIGHT, PLASTIC, MO-220, SOT619-8, HVQFN-48
文件页数: 43/66页
文件大小: 386K
代理商: TFA9812HN
TFA9812_2
NXP B.V. 2009. All rights reserved.
Preliminary data sheet
Rev. 02 — 22 January 2009
48 of 66
NXP Semiconductors
TFA9812
BTL stereo Class-D audio amplier with I2S input
[1]
Rs is the series resistance of inductor of low-pass LC lter in the application.
[2]
Output power measured across the loudspeaker load. This is based on indirect measurement of RDSon.
13.3 Timing
tPD
propagation delay
fs =
8 kHz
-
3.6
-
ms
11.025 kHz
-
2.58
-
ms
12 kHz
-
2.39
-
ms
16 kHz
-
1.78
-
ms
22.05 kHz
-
1.3
-
ms
24 kHz
-
1.18
-
ms
32 kHz
-
892
-
s
44.1 kHz
-
664
-
s
48 kHz
-
600
-
s
64 kHz
-
458
-
s
88.2 kHz
-
320
-
s
96 kHz
-
306
-
s
128 kHz
-
67.2
-
s
176.4 kHz
-
48
-
s
192 kHz
-
40.8
-
s
PWM output
tr
rise time
IO = 0 A
-
10
-
ns
tf
fall time
IO = 0 A
-
10
-
ns
tw(min)
minimum pulse width
IO = 0 A
-
40
-
ns
RDSon
drain-source on-state resistance
per output MOSFET, for low and high
side
-
0.28
0.35
δmax
maximum duty factor
-
0.96
-
Table 56.
AC characteristics …continued
Unless specied otherwise, VDDA =VDDP = 12 V, VDDA(3V3) =VDDD(3V3) = 3.3 V, Tamb =25 °C, Rs < 0.1 [1], RL =8 ,
fi = 1 kHz, fs = 44.1 kHz, fsw = 400 kHz, 24-bit I2S input data, MCLK clock mode, typical application diagram (Figure 13).
Symbol
Parameter
Condition
Min.
Typ.
Max. Unit
Table 57.
Characteristics I2C bus interface; see Figure 10
VDDD(3V3) =VDDA(3V3) = 2.7 V to 3.6 V; VDDA =VDDP = 8 V to 20 V;Tamb = 20 °C to +85 °C; all voltages referenced to ground;
unless otherwise specied.
Symbol
Parameter
Conditions
Min
Typ
Max
Unit
fSCL
SCL clock frequency
-
400
kHz
tLOW
LOW period of the SCL clock
1.3
-
s
tHIGH
HIGH period of the SCL clock
0.6
-
s
tr
rise time
SDA and SCL signals
[1] 20 + 0.1 Cb
--
ns
tf
fall time
SDA and SCL signals
[1] 20 + 0.1 Cb
--
ns
tHD;STA
hold time (repeated) START
condition
[2] 0.6
-
s
tSU;STA
set-up time for a repeated START
condition
0.6
-
s
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