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AL1101 PDF даташит
| Спецификация AL1101 изготовлена «Wavefront» и имеет функцию, называемую «24-Bit Analog-to-Digital Converter». |
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Детали детали
| Номер произв | AL1101 |
| Описание | 24-Bit Analog-to-Digital Converter |
| Производители | Wavefront |
| логотип |  |
8 Pages
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AL1101
24-Bit Analog-to-Digital Converter
General Description
The AL1101 is a 24-bit sigma-delta
stereo analog-to-digital audio converter
using Wavefront’s ClockEZ™ technology.
With dynamic range of 107dB, simplified
interface, and low power consumption,
the AL1101 (and its companion AL1201
DAC) is a best-in-class solution for
44.1kHz and 48kHz operation.
Applications
Digital Mixing Boards
Signal Processors
Digital Effects Boxes
Digital Recorders
Computer Sound Boards
Karaoke Systems
Car Audio Systems
Features
24-bit conversion
107dB dynamic range (A-wt)
0.002% THD (input = -1dBFS)
ClockEZ™ circuitry: internal PLL derives all
necessary timing signals from one external
Fs clock
64X oversampling, 5th order 1-bit -
¡
modulator
64:1 linear-phase digital decimation filter
Sample rate: 24kHz to 55kHz
Digital high-pass filter
Low power: 110mW (Fs = 48kHz)
Serial output selectable: 32/24 bits/frame
Full scale differential input = ±4V
5V operation
Architecture Block diagram and Package
INL+
INR+
INL-
INR-
AGND
MID
REF+
VA
REF-
AGND
VD DGND
DGND
DOUT
FORMAT
WDCLK
16 pin SOIC
150 mils wide
Wavefront Semiconductor ∴ 200 Scenic View Drive ∴ Cumberland, RI 02864 ∴ U.S.A.
Tel: +1 401 658-3670 ∴ Fax: +1 401 658-3680 ∴ Email: info@wavefrontsemi.com
On the web at www.wavefrontsemi.com
1
AL1101-0305
Free Datasheet http://www.Datasheet4U.com
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Table of Contents
General Description ………….……………………………….............………….. 1
Features …………………………………………………………..…………….......... 1
Applications ……………………………………….........................……………... 1
Architecture Block Diagram and Package …..………………………………. 1
Table of Contents ………………..……………………………………….............. 2
Pin Descriptions …………………………………………………………………….. 2
Electrical Characteristics ………………………………............…...……….… 3
Recommended Operating Conditions ……..…………….……………... 3
Analog Characteristics …….............………………………………........ 3
Digital Filter Characteristics ...........………………………………........ 3
Digital Inputs ……………………….............……..….......................... 3
Output ……………………………….............……..….......................... 3
Architecture Details …..........…………………………………………………….. 4
Differential Analog Inputs .……............…..……………………...……. 4
Single Ended Input Conditioning Circuit ……...........……… 4
Unbalanced Input Conditioning Circuit ……...........………. 4
Serial Output Interface …….............………………………………....... 5
Serial Output Interface Formats ……………............…………5
Serial Output Interface Timing ……………............……..……5
Digital Highpass Output Filter …..…………............…..…………...... 6
Clock Generator and PLL ……………………............…..…………...... 6
Reference and MID ……………………............…..……..........……...... 6
Power Supplies and Ground ……………………............…..………..... 6
Suggested Connections ………………………………………….………………… 7
Package Dimensions ………………………………………….………………….....7
Notice and Contact Information ………………………………………………...8
Pin Descriptions
Pin#
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
Name
INL+
INL-
AGND
REF+
REF-
VD
DGND
FORMAT
WDCLK
DOUT
DGND
AGND
VA
MID
INR-
INR+
Pin Type
In
In
Ground
Power
Ground
Power
Ground
In
In
Out
Ground
Ground
Power
I/O
In
In
Description
Positive analog input, left channel.
Negative analog input, left channel.
Analog ground.
Positive reference, connect to VDD thru 1kΩ resistor,
connect 0.1µF bypass capacitor to REF-.
Negative reference, connect to GND
Digital supply, connect 0.1µF bypass capacitor to GND.
Digital ground
Format select: 0=32 bits/frame, 1=24bits/frame.
Sample frequency wordclock, 24kHz<Fs<55kHz.
Serial data output.
Digital ground.
Analog ground.
Analog supply, connect 0.1µF bypass capacitor to GND.
Mid reference, connect 0.1µF bypass capacitor to GND.
Negative analog input, right channel.
Positive analog input, right channel.
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Electrical Characteristics
Parameter
Description/Condition
Recommended Operating Conditions
VA Analog supply voltage
VD Digital supply voltage
IA Analog supply current
ID Digital supply current
AGND
Analog ground
DGND
Digital ground
Fs Sample rate
Temp
Temperature
CLOAD
DOUT load capacitance
Analog Characteristics 1
Dynamic Range
Input = -60dBFS (A-weighted)
Input = -1dBFS
THD+N
-20dBFS
-60dBFS
Crosstalk
Input = -1dBFS
[IN+]-[IN-] fullscale 2
Input Voltage
Interchannel match
Common mode DC bias
Input Impedance
Differential
REF Current
IREF 3
Power Consumption
Gain Error
CMRR
Common mode rejection ratio
PSRR
Power supply rejection ratio
Digital Filter Characteristics 4
Passband
-3dB bandwidth 5,6
Ripple (20Hz – 21.77kHz)
Stopband
Frequency 5
Attenuation
Group Delay
Group Delay Distortion
Highpass Filter
Fc 5
-0.1dB frequency
Min Typ Max Units
4.5 5.0 5.5
V
4.5 5.0 5.5
V
16 mA
6 mA
- 0.0 -
V
- 0.0 -
V
24 48 50 kHz
0 25 70 °C
30 pF
±4.0
107
-95
-84
-44
-130
0.01
2.5
160k
130
110
75
70
±4.2
±0.34
dB
dB
dB
V
dB
V
Ω
µA
mW
%
dB
dB
2.5
26.23k
-76
37.9
0
2.5
16.4
21.77k
±0.025
Hz
dB
Hz
dB
1/Fs
µs
Hz
Hz
Digital Inputs (WDCLK, FORMAT)
VIH Logical “1” input voltage
VIL Logical “0” input voltage
IIN Input leakage current
CIN Input capacitance
0.55VD
5
0.1VD
1
V
V
µA
pF
Output (DOUT)
VOH
VOL
IOH
IOL
Logical “1” output voltage
Logical “0” output voltage
Logical “1” output current
Logical “0” output current
0.9VD
-0.5
0.5
0.1VD
V
V
mA
mA
Note 1: Temp = 25°C, VA = VD = REF+ = 5V, Fs = 48kHz, FINPUT = 1kHz, Bandwidth = 20Hz-20kHz.
Note 2: Full scale input scales linearly with REF potential ([REF+]-[REF-]).
Note 3: REF current scales linearly with Fs.
Note 4: Temp = 25°C, VA = VD = REF+ = 5V, Fs = 48kHz, FINPUT = 1kHz.
Note 5: Passband, stopband, and highpass frequencies scale with Fs.
Note 6: Passband is compensated for an external single-pole 80kHz lowpass filter at analog inputs (0.26dB
at 20kHz). Compensation scales with Fs.
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