CXD2555 Application Datasheet

CXD2555 Datasheet, PDF, Equivalent


Part Number

CXD2555

Description

AD/DA Converter For Audio Application

Manufacture

Intersil Corporation

Total Page 11 Pages
Datasheet
Download CXD2555 Datasheet


CXD2555
® HI2555, CXD2555
September 1997
NOT RECOMMENDED FOR NEW DESIGNS
1-Bit, AD/DA Converter
For Audio Application
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
• Distortion (Typ)
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01%
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.008% (-3dB)
• S/N Ratio (Typ)
- ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86dB
- DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96dB
• Ripple in the Digital Filter Pass Band . . . . . . . ±0.05dB
• Attenuation in the Digital Filter Stop Band . . . . . . . .-45dB
Ordering Information
PART
NUMBER
HI2555JCQ
CXD2555Q
TEMP.
RANGE (oC)
PACKAGE
-20 to 75 48 Ld MPQF
-20 to 75 48 Ld MPQF
PKG. NO.
Q48.12x12-S
Q48.12x12-S
Functions
• Data Can Be Input/Output at Rate of 1 x fS with a Built-
In Digital Filter
• Simple Connection of Multiple HI2555, CXD2555s
Enable Multi-Channel System
• The 32-Slot Serial Data Interface Enables Independent
Selection of Data Frontward Packing/Rearward
Packing and MSB First/LSB First
• The Master Clock is Applicable to Four Sources
• 256fS, 512fS, 768fS, and 1024fS
• The Sampling Frequency May be Adjusted to Low fS
Frequencies Such as 16kHz or 8kHz, in Addition to
Normal Ones of 48kHz, 44.1kHz, and 32Hz
• Various Frequency Divider Clocks Can Be Output for
LSIs Chips Connected
Pinout
HI2555, CXD2555 (48 LEAD MQFP)
TOP VIEW
AVDD3
AOUT1-
AVSS3
UCLK
XCLK
XVDD
XTLI
XTLO
XVSS
AVSS4
AOUT2-
AVDD4
48 47 46 45 44 43 42 41 40 39 38 37
1 36
2 35
3 34
4 33
5 32
6 31
7 30
8 29
9 28
10 27
11 26
1213
14
15
16
17
18
19
20
21
22
23
25
24
XSL2
XSL1
XSL0
MLSL
MASL
DVSS
SOUT
SIN
BCK
LRCK
MS
DVDD
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 © Intersil Americas Inc. 2002. All Rights Reserved
4-301
File Number 4121.1

CXD2555
Block Diagram
HI2555, CXD2555
36 35 34 8
7 54
SOUT 30
LRCK 27
BCK 28
SIN 29
CLOCK GENERATOR/ TIMING CIRCUIT
S P
S P
16
DIGITAL FILTER
(OVER SAMPLING
DECIMATION)
32 33
16
RAM
10
ROM
16
MAF1
16
MAF2
16
DAC1
16
DAC2
ADC1
ADC2
45 AIN1
16 AIN2
2 AOUT1(-)
48 AOUT1(+)
11 AOUT2(-)
13 AOUT2(+)
Pin Descriptions
PIN NO.
1
2
3
4
SYMBOL
AVDD 3
AOUT1(–)
AVSS 3
UCLK
5 XCLK
6 XVDD
7 XTLI
8 XTLO
9 XVSS
10 AVSS 4
11 AOUT2(-)
12 AVDD 4
12 AOUT2 (+)
14 AVSS 4
15 AVSS 2
16 AIN2
I/O DESCRIPTION
- Analog power supply for Channel-1 DA converter.
O Analog opposite-phase output of Channel-1 DA converter
- Analog GND for Channel-1 DA converter.
O Outputs a 1/2 frequency divider of the clock input form the oscillator pin XTLI (Pin 7). User
clock output for externally connected ICs.
O 256 fS clock output. this provides the master clock for ICs operating in the slave mode when
multiple CXD255Qs are connected. (When XSL2 = Low)
- Digital power supply for the master clock.
I Crystal oscillator circuit input. Connects the crystal oscillator selected by the crystal selection
pins XSLO to 2 (Pins 34, 35, and 36). Used to input the master clock from external.
O Crystal oscillator circuit output. Connects the crystal oscillator selected by the crystal selection
pins XSLO to 2 (Pins 34, 35, and 36).
- Digital GND for the master clock.
- Analog GND for Channel-2 DA converter.
O Analog opposite-phase output for Channel-2 DA converter.
- Analog power supply for Channel-2 DA converter.
O Analog in-phase output for Channel-2 DA converter.
- Analog GND for Channel-2 DA converter.
- Analog GND for Channel-2 AD converter.
I Analog input for Channel-2 AD converter.
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Features ® HI2555, CXD2555 NE W DED FOR N E M M O C NOT RE DESIGNS September 1997 1- Bit, AD/DA Converter For Audio Applicat ion Features • Two-Channel AD/DA Con verters and Their Respective Digital Fi lters for Decimation and Oversampling I nto a Single Chip • Peripheral Analog Circuits for AD Converter Greatly Redu ces External Elements • Distortion (T yp) - ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.01% - DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . 0.008% ( -3dB) • S/N Ratio (Typ) - ADC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .86dB - DAC . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .96dB • R ipple in the Digital Filter Pass Band . . . . . . . ±0.05dB • Attenuation i n the Digital Filter Stop Band . . . . . . . .-45dB Description The HI2555, C XD2555 is a 1-bit stereo AD/DA converte r featuring a 2nd-order DA system noise shaper. This LSI has also built-in digital filters and provides good cost pe.
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