廬
HI2570, CXD2570
ESIGNS
R NEW D
E D FO
M ME N D
September 1997
O
NOT REC
1-Bit AD/DA
Converter For Audio Application
Features
鈥?Two-Channel AD/DA Converters and Their Each Deci-
mation and Oversampling Digital Filter in a Single Chip
鈥?Simplified External Parts with a Built-In Analog Circuit
Around AD Converter
鈥?Distortion
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.015%
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.009% (-3dB)
鈥?S/N Ratio (Typical Values when F
S
= 16kHz)
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .80dB
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .90dB
鈥?Ripple in the Digital Filter Pass Band
. . . . . . . 鹵0.05dB<
鈥?Attenuation in the Digital Filter Rejection Band. . . 45dB>
Description
The HI2570, CXD2570 is a 1-bit stereo AD/DA converter
which uses a 2nd-order
鈭?/div>
system noise shaper. This LSI is
especially suited for sampling frequency between 8kHz and
32kHz.
Function
鈥?Data Can Be Input/Output at Rate of 1xF
S
with a Built-
In Digital Filter
鈥?Multi-Channel Systems can be Connected Using Several
HI2570, CXD2570Qs
鈥?The 32-Slot Serial Data Interface Enables Independent
Selection of Data Frontward Truncation/Rearward
Truncation and MSB First/LSB First
鈥?512F
S
/1024F
S
(when F
S
= 8 to 16kHz) or 256F
S
/512F
S
/
768F
S
/1024F
S
(When F
S
= 16 to 32kHz) Can be Used
as the Master Clock
鈥?The Sampling Frequency of Not Only 8kHz or 16kHz, but
32kHz or 44.1kHz Can Be Used for Audio Equipment
鈥?Various Frequency Divided Clocks are Output for LSIs
Connected
Applications
- Telephones, TV Conference Systems, Language Lab-
oratory Equipment, TV Game Equipment and Elec-
tronic Musical Instrument
Ordering Information
PART
NUMBER
HI2570JCQ
CXD2570Q
TEMP.
RANGE (
o
C)
-20 to 55
-20 to 55
PACKAGE
48 Ld MPQF
48 Ld MPQF
PKG. NO.
Q48.12x12-S
Q48.12x12-S
Pinout
HI2570, CXD2570 (48 LEAD MQFP)
TOP VIEW
AOUT1+
AV
SS
3
WO
DASL1
DV
DD
DASL0
AIN1
AV
DD
1
AV
SS
1
SUB
AV
DD
3
AOUT1-
AV
SS
3
UCLK
XCLK
XV
DD
XTLI
XTLO
XV
SS
AV
SS
4
AOUT2-
AV
DD
4
1
2
3
4
5
6
7
8
9
10
48 47 46 45 44 43 42 41 40 39 38 37
36
35
34
33
32
31
30
29
28
27
NC
NC
XSL2
XSL1
XSL0
MLSL
MASL
DV
SS
SOUT
SIN
BCK
LRCK
MS
DV
DD
26
11
25
12
13 14 15 16 17 18 19 20 21 22 23 24
AV
SS
4
AV
SS
2
AIN2
AV
DD
2
DV
SS
XMCK2
SUB
NC
AOUT2+
TEST
CLR
NC
CAUTION: These devices are sensitive to electrostatic discharge; follow proper IC Handling Procedures.
1-888-INTERSIL or 321-724-7143
|
Intersil (and design) is a registered trademark of Intersil Americas Inc.
Copyright 漏 Intersil Americas Inc. 2002. All Rights Reserved
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