TDF8590TH 데이터 시트보기 (PDF) - NXP Semiconductors.
부품명
상세내역
제조사
TDF8590TH Datasheet PDF : 30 Pages
| |||
NXP Semiconductors
TDF8590TH
2 × 80 W SE (4 Ω) or 1 × 160 W BTL (8 Ω) class-D amplifier
[3] Only complete shut down of amplifier in case of a short-circuit. In all other cases current limiting resulting in
clipping output signal.
[4] Fault condition detected during (every) transition between standby-to-mute and during restart after
activation of OCP (short to one of the supply lines).
6.5 Diagnostic output
Pin DIAG is pulled LOW when the OCP is triggered. With a continuous shorted load a
switching pattern in the voltage on pin DIAG is observed (see Figure 6). A permanent
LOW on pin DIAG indicates a short to the supply lines whereas a shorted load causes a
switching DIAG pin (see Section 6.4.3).
The pin DIAG reference voltage is VSSA. Pin DIAG should not be connected to an external
pull-up. An example of a circuit to read out and level shift the diagnostic data is given in
Figure 7. V5V represents a logic supply that is used in the application by the
microprocessor that reads out the DIAG data.
VDDA
V5V
5.6 V
100 kΩ 10 kΩ
DIAG
out
M2
DIAG
100 kΩ
VSSA
Fig 7. DIAG readout circuit with level shift
SGND
M1
27 kΩ
001aad840
6.6 Differential inputs
For a high Common Mode Rejection Ratio (CMRR) and a maximum of flexibility in the
application, the audio inputs are fully differential. By connecting the inputs anti-parallel the
phase of one of the channels can be inverted, so that a load can be connected between
the two output filters. In this case the system operates as a mono BTL amplifier.
The input configuration for a mono BTL application is illustrated in Figure 8.
In the stereo SE configuration it is also recommended to connect the two differential
inputs in anti-phase. This has advantages for the current handling of the power supply at
low signal frequencies (supply pumping).
TDF8590TH_2
Product data sheet
Rev. 02 — 23 April 2007
© NXP B.V. 2007. All rights reserved.
9 of 30
Share Link: 