®
HI2555, CXD2555
1-Bit, AD/DA Converter
For Audio Application
September 1997
Features
Description
• Two-Channel AD/DA Converters and Their Respective
Digital Filters for Decimation and Oversampling Into a
Single Chip
The HI2555, CXD2555 is a 1-bit stereo AD/DA converter
featuring a 2nd-order DA system noise shaper. This LSI has
also built-in digital filters and provides good cost performance.
• Peripheral Analog Circuits for AD Converter Greatly
Reduces External Elements
Functions
• Data Can Be Input/Output at Rate of 1 x f with a Built-
S
In Digital Filter
• Distortion (Typ)
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01%
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.008% (-3dB) • Simple Connection of Multiple HI2555, CXD2555s
Enable Multi-Channel System
• S/N Ratio (Typ)
• The 32-Slot Serial Data Interface Enables Independent
Selection of Data Frontward Packing/Rearward
Packing and MSB First/LSB First
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86dB
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96dB
• Ripple in the Digital Filter Pass Band . . . . . . . ±0.05dB
• The Master Clock is Applicable to Four Sources
• Attenuation in the Digital Filter Stop Band . . . . . . . .-45dB
• 256f , 512f , 768f , and 1024f
S
S
S
S
Ordering Information
• The Sampling Frequency May be Adjusted to Low f
Frequencies Such as 16kHz or 8kHz, in Addition to
Normal Ones of 48kHz, 44.1kHz, and 32Hz
S
PART
NUMBER
TEMP.
RANGE ( C)
o
PACKAGE
48 Ld MPQF
48 Ld MPQF
PKG. NO.
Q48.12x12-S
Q48.12x12-S
• Various Frequency Divider Clocks Can Be Output for
LSIs Chips Connected
HI2555JCQ
CXD2555Q
-20 to 75
-20 to 75
Pinout
HI2555, CXD2555 (48 LEAD MQFP)
TOP VIEW
48 47 46 45 44 43 42 41 40 39 38 37
XSL2
XSL1
XSL0
36
1
AV
DD
3
35
34
33
32
31
30
29
28
27
26
25
AOUT1-
AV
2
3
3
SS
MLSL
MASL
DV
SS
UCLK
XCLK
4
5
XV
DD
XTLI
6
7
SOUT
SIN
BCK
XTLO
8
XV
SS
9
LRCK
MS
AV
4
10
SS
AOUT2-
AV
11
12
DV
DD
4
DD
13 14 15 16 17 18 19 20 21 22 23 24
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.
File Number 4121.1
Copyright © Intersil Americas Inc. 2002. All Rights Reserved
4-301