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PDF LC78833V Data sheet ( Hoja de datos )
| Número de pieza | LC78833V | |
| Descripción | Digital Audio 16-Bit D/A Converter with Built-In Digital Filters | |
| Fabricantes | Sanyo Semicon Device | |
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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  
Pin Functions
Pin No.
LC78833M
LC78833V
11
22
—3
34
45
56
67
78
89
— 10
9 11
10 12
11 13
12 14
— 15
13 16
14 17
15 18
16 19
17 20
18 21
— 22
19 23
20 24
LC78833M, 78833V
Pin
CH1OUT
REFH
NC
Vref H
AVDD
LRCK
DATA
BCLK
SYSCLK
NC
CKOUT
DVDD
TSTOUT
TST
NC
EMP
INITB
DGND
REFL
AGND
Vref L
NC
NC
CH2OUT
Description
Channel 1 analog output
High-level reference voltage
Normally connected to AGND through a capacitor.
No connection
High-level reference voltage input
Analog system power supply
LR clock input
A high level specifies channel 1 and a low level channel 2.
Digital audio data input
Accepts data in a two’s complement MSB first format.
Bit clock input
System clock input (384fs)
No connection
System clock output (384fs)
Digital system power supply
Test output
Test output
This pin must be connected to DGND in normal operation.
No connection
De-emphasis filter on/off control input
A high level specifies on and a low level off.
This function supports a sampling frequency fs of 44.1 kHz.
Initialization input. A low level input to this pin initializes the IC.
Digital system ground
Low-level reference voltage
Normally connected to AGND through a capacitor.
Analog system power supply
Low-level reference voltage input
No connection
No connection
Channel 2 analog output
No. 5212-5/11
5 Page 
LC78833M, 78833V
Power On Timing
1. The analog power supply (AVDD) and the digital power supply (DVDD) should be applied (or removed) at the same
time.
2. If a time difference between application of the analog and digital power supplies cannot be avoided, the timing must
meet the following conditions:
• The power supply power up (and power down) time differences must be under 3 ms. (See Figure 1.)
• If the time difference exceeds 3 ms, the rise (fall) time of the power supply that rises (falls) first must be at least
5 ms, and the time difference must be under 50 ms. (See Figure 2.)
Figure 1
Figure 2
s No products described or contained herein are intended for use in surgical implants, life-support systems, aerospace
equipment, nuclear power control systems, vehicles, disaster/crime-prevention equipment and the like, the failure of
which may directly or indirectly cause injury, death or property loss.
s Anyone purchasing any products described or contained herein for an above-mentioned use shall:
Accept full responsibility and indemnify and defend SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and
distributors and all their officers and employees, jointly and severally, against any and all claims and litigation and all
damages, cost and expenses associated with such use:
Not impose any responsibility for any fault or negligence which may be cited in any such claim or litigation on
SANYO ELECTRIC CO., LTD., its affiliates, subsidiaries and distributors or any of their officers and employees
jointly or severally.
s Information (including circuit diagrams and circuit parameters) herein is for example only; it is not guaranteed for
volume production. SANYO believes information herein is accurate and reliable, but no guarantees are made or implied
regarding its use or any infringements of intellectual property rights or other rights of third parties.
This catalog provides information as of February, 1997. Specifications and information herein are subject to
change without notice.
No. 5212-11/11
11 Page | ||
| Páginas | Total 11 Páginas | |
| PDF Descargar | [ Datasheet LC78833V.PDF ] | |
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