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参数资料
型号： TAS5162DDVR
厂商： TEXAS INSTRUMENTS INC
元件分类： 音频／视频放大
英文描述： 210 W, 2 CHANNEL, AUDIO AMPLIFIER, PDSO44
封装： GREEN, PLASTIC, HTSSOP-44
文件页数： 14/32页
文件大小： 974K
代理商： TAS5162DDVR
www.ti.com
Mid Z Sequence Compatibility
DEVICE PROTECTION SYSTEM
ERROR REPORTING
TAS5162
SLES194D – OCTOBER 2006 – REVISED JULY 2007
Characteristics section of this data sheet). Although
being present. TI recommends monitoring the OTW
not specifically required, it is a good practice to hold
signal
using
the
system
microcontroller
and
RESET_AB and RESET_CD low during power down,
responding to an overtemperature warning signal by,
thus preventing audible artifacts including pops or
e.g., turning down the volume to prevent further
clicks.
heating of the device resulting in device shutdown
(OTE).
When the TAS5162 is being used with TI PWM
modulators such as
the
TAS5508,
no
special
To reduce external component count, an internal
attention to the state of RESET_AB and RESET_CD
pullup resistor to 3.3 V is provided on both SD and
is required, provided that the chipset is configured as
OTW outputs. Level compliance for 5-V logic can be
recommended.
obtained by adding external pullup resistors to 5 V
(see the Electrical Characteristics section of this data
sheet for further specifications).
The
TAS5162
is
compatible
with
the
Mid
Z
Sequence from the TAS5086 Modulator. The Mid Z
Sequence is a series of pulses that is generated by
The TAS5162 contains advanced protection circuitry
the modulator that causes the power stage to slowly
carefully designed to facilitate system integration and
enable its outputs as it begins to switch.
ease of use, as well as to safeguard the device from
permanent failure due to a wide range of fault
By slowly starting the PWM switching, the impulse
conditions
such
as
short
circuits,
overload,
response created by the onset of switching is
overtemperature, and undervoltage. The TAS5162
reduced. This impulse response is the acoustic
responds to a fault by immediately setting the power
artifact that is heard in the output transducers
stage in a high-impedance (Hi-Z) state and asserting
(loudspeakers) and is commonly termed a "click" or
the SD pin low. In situations other than overload or
"pop".
over temperature, the device automatically recovers
when the fault condition has been removed or the
The low acoustic artifact noise of TAS5162 will be
gate supply voltage has increased. For highest
further decreased when used in combination with a
possible
reliability,
recovering
from
an
TAS5086 modulator and the Mid Z sequence is
overload/over-temperature
fault
requires
external
enabled.
reset of the device (see the Device Reset section of
The Mid Z Sequence is primarily used for the
this data sheet) no sooner than 1 second after the
single-ended mode of operation. It facilitates a
shutdown.
"softer" PWM output start after the split cap output
The TAS5162 contains circuitry associated with its
configuration is charged.
PWM inputs that will detect the condition when a
PWM input is continuously high or low. Without this
protection circuitry, if a PWM input is not correct, the
The
SD
and
OTW
pins
are
both
active-low,
PVDD power supply could appear on the associated
open-drain
outputs.
Their
function
is
for
output pin. This condition could damage either the
protection-mode signaling to a PWM controller or
output load (loudspeaker) or the device. If a PWM
other system-control device.
input remains either high or low over 15
μS, the
device's outputs will be set into a Hi-Z state. If this
Any fault resulting in device shutdown is signaled by
error condition occurs, SD will not be asserted low.
the SD pin going low. Likewise, OTW goes low when
the device junction temperature exceeds 125
°C (see
The above mentioned operation is used for all of the
the following table).
BTL output modes except for Mode 0,0,1 and the
Single-ended Mode 1,0,1 those are the Latching
SD
OTW
DESCRIPTION
Shutdown Modes. In the Latching Shutdown Mode,
0
Overtemperature (OTE) or overload (OLP) or
the over current error recovery circuitry is disabled
undervoltage (UVP)
and an over current condition will cause the device to
0
1
Overload (OLP) or undervoltage (UVP)
shutdown immediately. After shutdown, RESET_AB
1
0
Junction temperature higher than 125
°C
and/or RESET_CD must be asserted to restore
(overtemperature warning)
normal operation after the over current condition is
1
Junction temperature lower than 125
°C and no
removed.
OLP or UVP faults (normal operation)
Note that asserting either RESET_AB or RESET_CD
low forces the SD signal high, independent of faults
21
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TAS5162DKD 功能描述:音频放大器 2x210W St Dig Pwr RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
TAS5162DKD6EVM 功能描述:音频 IC 开发工具 TAS5162DKD6 Eval Mod RoHS:否 制造商:Texas Instruments 产品:Evaluation Kits 类型:Audio Amplifiers 工具用于评估:TAS5614L 工作电源电压:12 V to 38 V
TAS5162DKDG4 功能描述:音频放大器 2x210 W Stereo Dig Amp Power Stage RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
TAS5162DKDR 功能描述:音频放大器 2x210W St Dig Pwr RoHS:否 制造商:STMicroelectronics 产品:General Purpose Audio Amplifiers 输出类型:Digital 输出功率: THD + 噪声: 工作电源电压:3.3 V 电源电流: 最大功率耗散: 最大工作温度: 安装风格:SMD/SMT 封装 / 箱体:TQFP-64 封装:Reel
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