參數(shù)資料
型號(hào)： MC14LC5480ENR2
廠(chǎng)商： Freescale Semiconductor
文件頁(yè)數(shù)： 20/24頁(yè)
文件大?。?/td> 0K
描述： IC CODEC-FILTER PCM 5V 20-SSOP
標(biāo)準(zhǔn)包裝： 1,500
類(lèi)型： PCM 編解碼器/濾波器
數(shù)據(jù)接口： PCM 音頻接口
分辨率（位）： 13 b
ADC / DAC 數(shù)量： 1 / 1
三角積分調(diào)變： 無(wú)
電壓 - 電源，數(shù)字： 4.5 V ~ 5.5 V
工作溫度： -40°C ~ 85°C
安裝類(lèi)型： 表面貼裝
封裝/外殼： 20-SSOP（0.209"，5.30mm 寬）
供應(yīng)商設(shè)備封裝： 20-SSOP
包裝： 帶卷 (TR)
version algorithm. All of the analog circuitry involved in the
data conversion (the voltage reference, RDAC, CDAC, and
comparator) are implemented with a differential architecture.
The receive section includes the DAC described above, a
sample and hold amplifier, a 5–pole, 3400 Hz switched ca-
pacitor low–pass filter with sinX/X correction, and a 2–pole
active smoothing filter to reduce the spectral components of
the switched capacitor filter. The output of the smoothing fil-
ter is buffered by an amplifier, which is output at the RO+ and
RO– pins. These outputs are capable of driving a 4 k
load
differentially or a 2 k
load to the VAG pin. The MC14LC5480
also has a pair of power amplifiers that are connected in a
push–pull configuration. The PI pin is the inverting input to
the PO– power amplifier. The non–inverting input is internally
tied to the VAG pin. This allows this amplifier to be used in an
inverting gain circuit with two external resistors. The PO+
amplifier has a gain of minus one, and is internally con-
nected to the PO– output. This complete power amplifier cir-
cuit is a differential (push–pull) amplifier with adjustable gain
that is capable of driving a 300
load to +12 dBm. The
power amplifier may be powered down independently of the
rest of the chip by connecting the PI pin to VDD.
POWER–DOWN
There are two methods of putting this device into a low
power consumption mode, which makes the device nonfunc-
tional and consumes virtually no power. PDI is the power–
down input pin which, when taken low, powers down the
device. Another way to power the device down is to hold both
the FST and FSR pins low. When the chip is powered down,
the VAG, TG, RO+, RO–, PO+, PO–, and DT outputs are high
impedance. To return the chip to the power–up state, PDI
must be high and the FST frame sync pulse must be present.
The DT output will remain in a high–impedance state for at
least two FST pulses after power–up.
MASTER CLOCK
Since this codec–filter design has a single DAC architec-
ture, the MCLK pin is used as the master clock for all analog
signal processing including analog–to–digital conversion,
digital–to–analog conversion, and for transmit and receive fil-
tering functions of this device. The clock frequency applied to
the MCLK pin may be 256 kHz, 512 kHz, 1.536 MHz,
1.544 MHz, 2.048 MHz, 2.56 MHz, or 4.096 MHz. This de-
vice has a prescaler that automatically determines the proper
divide ratio to use for the MCLK input, which achieves the re-
quired 256 kHz internal sequencing clock. The clocking re-
quirements of the MCLK input are independent of the PCM
data transfer mode (i.e., Long Frame Sync, Short Frame
Sync, IDL mode, or GCI mode).
DIGITAL I/O
The MC14LC5480 is pin selectable for Mu–Law or A–Law.
Table 1 shows the 8–bit data word format for positive and
negative zero and full scale for both companding schemes
(see Tables 3 and 4 at the end of this document for a com-
plete PCM word conversion table). Table 2 shows the series
of eight PCM words for both Mu–Law and A–Law that corre-
spond to a digital milliwatt. The digital mW is the 1 kHz cal-
ibration signal reconstructed by the DAC that defines the
absolute gain or 0 dBm0 Transmission Level Point (TLP) of
the DAC. The 0 dBm0 level for Mu–Law is 3.17 dB below the
maximum level for an unclipped tone signal. The 0 dBm0
level for A–Law is 3.14 dB below the maximum level for an
unclipped tone signal. The timing for the PCM data transfer is
independent of the companding scheme selected. Refer to
Figure 2 for a summary and comparison of the four PCM
data interface modes of this device.
Table 1. PCM Codes for Zero and Full Scale
Ll
Mu–Law
A–Law
Level
Sign Bit
Chord Bits
Step Bits
Sign Bit
Chord Bits
Step Bits
+ Full Scale
1
0 0 0
0 0 0 0
1
0 1 0
1 0 1 0
+ Zero
1
1 1 1
1 1 1 1
1
1 0 1
0 1 0 1
– Zero
0
1 1 1
1 1 1 1
0
1 0 1
0 1 0 1
– Full Scale
0
0 0 0
0 0 0 0
0
0 1 0
1 0 1 0
Table 2. PCM Codes for Digital mW
Ph
Mu–Law
A–Law
Phase
Sign Bit
Chord Bits
Step Bits
Sign Bit
Chord Bits
Step Bits
π/8
0
0 0 1
1 1 1 0
0
0 1 1
0 1 0 0
3
π/8
0
0 0 0
1 0 1 1
0
0 1 0
0 0 0 1
5
π/8
0
0 0 0
1 0 1 1
0
0 1 0
0 0 0 1
7
π/8
0
0 0 1
1 1 1 0
0
0 1 1
0 1 0 0
9
π/8
1
0 0 1
1 1 1 0
1
0 1 1
0 1 0 0
11
π/8
1
0 0 0
1 0 1 1
1
0 1 0
0 0 0 1
13
π/8
1
0 0 0
1 0 1 1
1
0 1 0
0 0 0 1
15
π/8
1
0 0 1
1 1 1 0
1
0 1 1
0 1 0 0
F
re
e
sc
a
le
S
e
m
ic
o
n
d
u
c
to
r,
I
Freescale Semiconductor, Inc.
For More Information On This Product,
Go to: www.freescale.com
n
c
..
.
相關(guān)PDF資料
PDF描述
MC14LC5540DW IC CODEC ADPCM 28-SOIC W
MC33199DR2 IC DRVR SER INK ISO9141 14-SOIC
MC33215BE IC SPEAKERPHONE CIRCUIT 42-SDIP
MC33990DR2 IC TRANSCEIVER J-1850 BUS 8-SOIC
MC34017A-3P IC PHONE TONE RINGER 500HZ 8-DIP
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
MC14LC5480SD 制造商:Rochester Electronics LLC 功能描述:- Bulk
MC14LC5480SDR2 功能描述:IC 5V PCM CODEC-FILTER 20-SSOP RoHS:否 類(lèi)別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
MC14LC5540DW 功能描述:IC CODEC ADPCM 28-SOIC W RoHS:否 類(lèi)別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類(lèi)型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類(lèi)型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
MC14N-S-10230AC 制造商:IMO 功能描述:Contactor 3 Pole Open 5.5kW 14A AC3, 1 Normally Open Auxiliary, 230V AC Coil Ove
MC14-S-10110 制造商:IMO Precision Controls Ltd 功能描述:CONTACTOR 5.5KW 110VAC 制造商:IMO Precision Controls Ltd 功能描述:CONTACTOR 1NO 110VAC 14A D 制造商:IMO PRECISION CONTROLS 功能描述:CONTACTOR, 5.5KW, 110VAC 制造商:IMO Precision Controls Ltd 功能描述:CONTACTOR, 1NO, 110VAC, 14A, DIN RAIL; Operating Voltage:690VAC; Switching Power AC1:4kW; Switching Power AC3:7.5kW; Switching Current AC1:25A; Switching Current AC3:14A; Load Current Inductive:14A; Load Current Resistive:25A ;RoHS Compliant: Yes
發(fā)布緊急采購(gòu)，3分鐘左右您將得到回復(fù)。

采購(gòu)需求

(若只采購(gòu)一條型號(hào)，填寫(xiě)一行即可)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

發(fā)布成功！您可以繼續(xù)發(fā)布采購(gòu)。也可以進(jìn)入我的后臺(tái)，查看報(bào)價(jià)

*型號(hào) *數(shù)量 廠(chǎng)商 批號(hào) 封裝
添加更多采購(gòu)

我的聯(lián)系方式

*
*
*