- 您現(xiàn)在的位置：買賣IC網(wǎng) > PDF目錄10362 > D2-45157-QR-T (Intersil)IC DGTL AMP PWM CTRLR 68QFN PDF資料下載
參數(shù)資料
| 型號： | D2-45157-QR-T |
| 廠商： | Intersil |
| 文件頁數(shù)： | 15/31頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL AMP PWM CTRLR 68QFN |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 系列： | D2Audio™ |
| 類型： | D 類 |
| 輸出類型： | 2 通道（立體聲） |
| 在某負(fù)載時最大輸出功率 x 通道數(shù)量： | 30W x 2 @ 8 歐姆 |
| 電源電壓： | 9 V ~ 26 V |
| 安裝類型： | 表面貼裝 |
| 供應(yīng)商設(shè)備封裝： | 68-QFN 裸露焊盤（10x10） |
| 封裝/外殼： | 68-VFQFN 裸露焊盤 |
| 包裝： | 帶卷 (TR) |
第1頁第2頁第3頁第4頁第5頁第6頁第7頁第8頁第9頁第10頁第11頁第12頁第13頁第14頁當(dāng)前第15頁第16頁第17頁第18頁第19頁第20頁第21頁第22頁第23頁第24頁第25頁第26頁第27頁第28頁第29頁第30頁第31頁
D2-45057, D2-45157
22
FN6785.0
July 29, 2010
completion of reset and when the device firmware begins
operating, this pin becomes the PSSYNC output.
Power Sequence Requirements
Voltage sensors and brownout detectors monitor supply
voltages to the device. The logic and built-in protection of
this voltage monitoring prevents operation until all
supply voltages are within their specified limits. However,
during application of power, the CVDD and RVDD
(including PWMVDD) voltages should be brought up
together to avoid high current transients that could fold
back a power supply regulator.
During application of power to the system and while the
CVDD voltage (nominal +1.8V) is below its minimum
specified limit, the RVDD and PWMVDD supplies (nominal
+3.3V) must not exceed the voltage that is present at
CVDD. (i.e., if VCVDD < minimum-specified, then
VRVDD/PWMVDD must be < VCVDD.) After CVDD has
reached its minimum limit, RVDD/PWMVDD can then
continue to increase to its normal design (3.3V) value.
(PLLVDD may be brought up separately.)
Best practice would be for all supplies to feed from
regulators using a common power source. Typically this
can be achieved by using a single low-voltage supply
power source and regulating the 3.3V and 1.8V supplies
from that source. Also, as noted in the pin specifications
of this document, all voltages of the same names must
be tied together at the board level.
REG5V
The output stage internal drivers require their own
+5VDC supply voltage. An on-chip regulator operates
from the VDDHV voltage to produce this +5V voltage.
The REG5V pin is used for external capacitor connection
to filter this regulated voltage. A 1.0F and 0.1F
capacitor should be connected to this pin, and the
connection should be made as close as practical to the
pin. This internal +5V is used only by the output stage
drivers. No other connection is to be made to this pin.
Pin and Control Block Functions
I/O Control Pins
Several device pins are used as specific-function inputs
and outputs to control amplifier and device operation.
These pins are implemented within the device hardware
as general purpose inputs/outputs. However, their
operation is not programmable, and their specific
function is totally defined by the D2-45057, D2-45157
internal firmware. Functions of these pins are defined in
the pin definition list, and additional detail is included
within the descriptions of the functional blocks where
these pins are used.
Some pins are multiple-purpose, where their functions
are defined accordingly by the operational state (e.g.,
reset, initializing, booting, running) of the D2-45057,
D2-45157 device. These multiple-purpose pins and their
descriptions and uses are described in more detail in
nPDN Input Pin
The nPDN pin is a control input that is used to
power-down the outputs. When this input is pulled low,
all audio outputs turn off and become inactive, internal
PWM drive to output stages is turned off, and all output
stages float. Internal logic and other references remain
active during this power-down state. Asserting nPDN also
causes all four nERROR[0:3] outputs to pull (active) low.
Each of the four output stages incorporate their own
latching overcurrent hardware shutdown logic, in
addition to the separate protection events that occur
through firmware control from an overcurrent condition.
Firmware protection control will perform other steps to
clear this hardware latched shutdown, although asserting
nPDN will also reset the hardware-latched state.
The nPDN pin is active low, and inactive when at logic
high level. In normal operation, it is held high with
pull-up to the RVDD supply.
nERROR[0-3] Output Pins
Each of the four output stages includes a two-level
overload and overcurrent monitor. An overcurrent or
overload condition asserts the nERROR output for that
channel.
Also, an undervoltage condition for the voltages used by
the output stages (HVDD[A:D]/VDDHV, REG5V,
PWMVDD), or assertion of nPDN, will cause all four
nERROR outputs to assert.
The nERROR pins are open drain, active-low, and can be
wire-or connected together. Depending on the output
mode configuration where more than one output stage
may be used for an audio channel, nERROR pins
associated with that audio channel are connected
together to provide monitoring status.
In applications where multiple power stage outputs are
defined for an audio channel, the nERROR pins for these
power stages would be tied together, and also tied to the
PROTECT input pin associated with that audio channel.
connections for the different configuration modes.
IREF Pin
The IREF pin is used to set the overcurrent and overload
monitoring threshold. The design requires a 100kΩ
resistor to connect from this pin to ground.
Configuration Assignment Pin Differences
There are two pairs of pins used for configuration
assignments. Both pin pairs are used for the assignment,
and their settings must both match their requirements
for the configuration mode. These pin pairs are:
OCFG0, OCFG1: define the output stage topology
and operation of the output configuration.
nERROR/CFG0, PSSYNC/CFG1: define the audio
processing and amplifier control supporting the
output configuration.
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| D38999/26WB5BN | CONN HSG PLUG 5POS STRGHT SCKT |
| D2-45057-QR-T | IC DGTL AMP PWM CTRLR 68QFN |
| D38999/26WD5BN | CONN HSG PLUG 5POS STRGHT SCKT |
| D38999/24WD97SNLC | CONN HSG RCPT 12POS JAM NUT SCKT |
| VI-B6P-IV-F2 | CONVERTER MOD DC/DC 13.8V 150W |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| D245-5 | 制造商:KLEIN TOOLS 功能描述:Plier, Diagonal-Cutting; Tapered; 5-1/16 in.; 11/16 in.; 9/16 in.; 3/8 in.; Red 制造商:Klein Tools Inc 功能描述:TOOLS PLIERS 制造商:KLEIN TOOLS 功能描述:TOOLS, PLIERS; Plier Style:Diagonal Cutting; Jaw Length:18mm; Overall Length:129mm; Features:Tapered nose gets in confined areas; ideal for close-tip cutting; Handle Color:Red ;RoHS Compliant: NA 制造商:Klein Tools Inc 功能描述:Standard Diagonal Cutting Pliers |
| D245-5C | 制造商:Klein Tools Inc 功能描述: |
| D246 | 制造商:PETERMANN 制造商全稱:PETERMANN 功能描述:HIGH RELIABILITY FOR LOW COST |
| D24-6 | 制造商:RICHARD MANNO 功能描述: |
| D24683-000 | 制造商:TE Connectivity 功能描述:Heat Shrink Molded Boot 制造商:TE Connectivity 功能描述:222K121-25-CS-2101-0 - Bulk |
發(fā)布緊急采購，3分鐘左右您將得到回復(fù)。