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LC78833M の電気的特性と機能
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LC78833MのメーカーはSanyo Semicon Deviceです、この部品の機能は「Digital Audio 16-Bit D/A Converter with Built-In Digital Filters」です。 |
製品の詳細 ( Datasheet PDF )
| 部品番号 | LC78833M |
| |
| 部品説明 | Digital Audio 16-Bit D/A Converter with Built-In Digital Filters | ||
| メーカ | Sanyo Semicon Device | ||
| ロゴ |  |
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このページの下部にプレビューとLC78833Mダウンロード（pdfファイル）リンクがあります。 Total 11 pages
Ordering number : EN*5212
Preliminary
CMOS LSI
LC78833M, 78833V
Digital Audio 16-Bit D/A Converter
with Built-In Digital Filters
Overview
The LC78833M and LC78833V are CMOS 16-bit D/A
converters with built-in 4× oversampling digital filters.
Functions and Features
[Digital Filter Block]
• 4× oversampling filters: Two FIR filter stages (33rd and
ninth order)
• De-emphasis filter: Supports a 44.1 kHz sampling
frequency (fs).
[D/A Converter Block]
• Dynamic level shifting conversion 16-bit D/A converter
• D/A converters for two channels (synchronized outputs)
on a single chip
• On-chip output operational amplifiers
• System clock: 384fs
• 5-V single-voltage power supply
• Supports low-voltage operation (3.0 V)
• Implemented in a Si gate CMOS process for low power.
Package Dimensions
unit: mm
3036B-MFP20
[LC78833M]
unit: mm
3175A-SSOP24
[LC78833V]
SANYO: MFP20
Specifications
Absolute Maximum Ratings at Ta = 25°C, VSS = 0 V
Parameter
Maximum supply voltage
Maximum input voltage
Maximum output voltage
Operating temperature
Storage temperature
Symbol
VDD max
VIN max
VOUT max
Topr
Tstg
Conditions
SANYO: SSOP24
Ratings
–0.3 to +7.0
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
–30 to +75
–40 to +125
Unit
V
V
V
°C
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110-8534 JAPAN
D3095HA (OT) No. 5212-1/11
1 Page  
Block Diagram
LC78833M, 78833V
DC characteristics at Ta = –30 to 75°C, VDD = 3.0 to 5.5 V, VSS = 0 V
Parameter
Symbol
Conditions
min typ max Unit
Input high-level voltage (1)
VIH1
Pins 5, 6, 7, 12, 13, and 14 (pins 6, 7, 8, 14, 16, and 17)*
Input low-level voltage (1)
VIL1
Pins 5, 6, 7, 12, 13, and 14 (pins 6, 7, 8, 14, 16, and 17)*
Input high-level voltage (2)
VIH2
Pin 8 (pin 9)*
Input low-level voltage (2)
VIL2
Pin 8 (pin 9)*
Output high-level voltage
VOH
Pin 9 (pin 11)*: IOH = –3 mA
Output low-level voltage
VOL Pin 9 (pin 11)*: IOL = 3 mA
Input leakage current
Pins 5, 6, 7, 8, 12, 13, and 14
IL (pins 6, 7, 8, 9, 14, 16, and 17)*: VI = VSS, VDD
Note: * Pins in parentheses apply to the LC78833V.
2.2
0.7 VDD
2.4
–25
0.8
0.3 VDD
0.4
+25
V
V
V
V
V
V
µA
AC Characteristics at Ta = –30 to 75°C, VDD = 3.0 to 5.5 V, VSS = 0 V
Parameter
Clock pulse width
Clock pulse period
BCLK pulse width
BCLK pulse period
Data setup time
Data hold time
LRCK setup time
LRCK hold time
BCLK rise time
BCLK fall time
SYSCLK rise time
SYSCLK fall time
Symbol
tCW
tCY
tBCW
tBCY
tDS
tDH
tLRS
tLRH
tBr
tBf
tSr
tSf
Conditions
min typ max Unit
25 ns
50
1000
ns
60 ns
120 ns
40 ns
40 ns
40 ns
40 ns
40 ns
40 ns
20 ns
20 ns
No. 5212-3/11
3Pages 
LC78833M, 78833V
LC78833M/V Operation
1. Digital Filters
The LC78833M and LC78833V perform the computations shown in the figure.
• Oversampling
The oversampling circuit in these ICs consists of two 2× interpolation filters (implemented as FIR filters)
connected vertically.
In particular, these ICs implement 4× oversampling by the vertical connection of two FIR filter stages, a 33rd-order
stage and a ninth-order stage. See page 9 for the filter characteristics.
• De-emphasis
A first-order IIR filter is used for de-emphasis. The filter coefficients are optimized for a sampling frequency of
44.1 kHz. See page 9 for the filter characteristics when de-emphasis is applied.
— De-emphasis on/off switching
De-emphasis is on when the EMP pin is high.
De-emphasis is off when the EMP pin is low.
2. Digital Audio Data Input
These ICs handle digital audio data in a 16-bit two’s complement MSB first format. The 16-bit serial data is input to
an internal register from the DATA pin on BCLK rising edges and read in on rising and falling edges of the LRCK
signal.
No. 5212-6/11
6 Page | |||
| ページ | 合計 : 11 ページ | ||
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PDF ダウンロード | [ LC78833M データシート.PDF ] | |
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データシートを活用すると、その部品の主な機能と仕様を詳しく理解できます。 ピン構成、電気的特性、動作パラメータ、性能を確認してください。 |
共有リンク
Link :| 部品番号 | 部品説明 | メーカ |
| LC78833 | Digital Audio 16-Bit D/A Converter with Built-In Digital Filters | Sanyo Semicon Device |
| LC78833M | Digital Audio 16-Bit D/A Converter with Built-In Digital Filters | Sanyo Semicon Device |
| LC78833V | Digital Audio 16-Bit D/A Converter with Built-In Digital Filters | Sanyo Semicon Device |