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PDF PCM67 Data sheet ( Hoja de datos )
| Número de pieza | PCM67 | |
| Descripción | Advanced 1-Bit BiCMOS Dual 18-Bit DIGITAL-TO-ANALOG CONVERTER | |
| Fabricantes | Burr-Brown Corporation | |
| Logotipo |  |
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Hay una vista previa y un enlace de descarga de PCM67 (archivo pdf) en la parte inferior de esta página. Total 13 Páginas | ||
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® PCM67P/U
PCM69AP/AU
SBAS024
Advanced 1-Bit BiCMOS Dual 18-Bit
DIGITAL-TO-ANALOG CONVERTER
FEATURES
q 18-BIT RESOLUTION DUAL AUDIO DAC
q EXCELLENT THD PERFORMANCE:
0.0025% (–92dB) at F/S, K Grade
1.0% (–40dB) at –60dB, K Grade
q HIGH S/N RATIO: 110dB typ (IHF-A)
q DUAL, CO-PHASE
q SINGLE SUPPLY +5V OPERATION
q LOW POWER: 75mW typical
q CAPABLE OF 16X OVERSAMPLING
q AVAILABLE IN SPACE SAVING
16-PIN DIP OR 20-PIN SOIC
q OPERATING TEMP RANGE:
–25°C to +85°C
q EXTREMELY LOW GLITCH ENERGY
DESCRIPTION
The PCM67 and PCM69A dual 18-bit DAC are low
cost, dual output 18-bit BiCMOS digital-to-analog con-
verters utilizing a novel architecture to achieve excel-
lent low level performance.
By combining a conventional thin-film R-2R ladder
DAC, a digital offset technique with analog correction
and an advanced one-bit DAC using first order noise
shaping technique, the PCM67 and PCM69A achieve
high resolution, minimal glitch, and low zero-crossing
distortion.
PCM67 digital offset occurs at bit 9, making it ideal for
high-performance CD players. PCM69A digital offset
occurs at bit 4, making it an excellent choice for digital
musical instruments and audio DSP.
Both PCM67 and PCM69A operate from a single +5V
supply. The low power consumption and small size (16-
pin PDIP or 20-pin SOIC) make these converters ideal
for a variety of digital audio applications.
Reference
Servo
Digital Signal In
Input
Interface
10-Bit DAC plus
Analog Correction
Advanced 1-Bit
DAC
10-Bit DAC plus
Analog Correction
Advanced 1-Bit
DAC
Analog Output Lch
Buffer
VCOM
Lch
Buffer
VCOM
Rch
Analog Output Rch
International Airport Industrial Park • Mailing Address: PO Box 11400 • Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd. • Tucson, AZ 85706
Tel: (520) 746-1111 • Twx: 910-952-1111 • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1992 Burr-Brown Corporation
PDS-1168A
Printed in U.S.A. August, 1993
1 page  
TYPICAL PERFORMANCE CURVES
All specifications at +25°C and VCC = +5.0V unless otherwise noted.
0.01%
0.005%
0.002%
THD vs POWER SUPPLY VOLTAGE
–60dB
F/S
1.0%
0.5%
0.2%
0.001%
4.75
5.0
VCC (V)
0.1%
5.25
3
2
1
0
–1
–2
–3
4.75
GAIN ERROR / VCOM vs POWER SUPPLY
3.70
Gain Error
3.60
VCOM
5.0
VCC (V)
3.50
3.40
5.25
0.01%
0.005%
0.002%
THD vs TEMPERATURE
–60dB
F/S
1.0%
0.5%
0.2%
0.001%
0.1%
–25 0 25 50 85 100
Temperature (°C)
3
2
1
0
–1
–2
–3
–25
GAIN ERROR / VCOM vs TEMPERATURE
3.70
3.60
3.50
3.40
0 25 50 75 85 100
Temperature (%)
0.01%
0.005%
THD vs SYSTEM CLOCK FREQUENCY
fs = 44.1kHz
–60dB
1.0%
0.5%
0.002%
0.001%
384
F/S
192 96
fs (Hz)
0.2%
0.1%
48
CHANNEL SEPARATION vs SIGNAL FREQUENCY
115
110
105
100
95
100
500 1k 2k 4k 8k 16k … 128k
f (Hz)
®
5 PCM67/69A
5 Page 
Use 400Hz High-Pass
Filter and 30kHz
Low-Pass Filter
Meter Settings
Distortion
Analyzer
(Shiba Soku Model
725 or Equivalent)
Binary
Counter
Digital Code
(EPROM)
Programmable
Gain Amp
0dB to 60dB
Parallel-to-Serial
Conversion
Low-Pass
Filter
40kHz 3rd-Order
GIC Type
DUT
(PCM67/69A)
Timing
Logic
System Clock
Bit Clock
Word Clock
Sampling Rate = 44.1kHz x 8 (352.8kHz)
Output Frequency = 991Hz
I-to-V
Converter
OPA627
FIGURE 12. PCM67/69A THD+N Production Test.
Digital
In
11 10
12 9
13 8
14 7
PCM67
15 or 6
PCM69A
16 5
17 4
18 3
19 2
20 1
+ C1
0.1µF
VCC
(+5V)
C5
10µF
10µF
C4
+ C2
100µF
C10
1000pF
R5
2kΩ
+5V
+ C6
100µF
R4
680Ω
R3
680Ω
C8
10µF
A2
C9
1000pF
R6
2kΩ
+ C3
100µF
R2
680Ω
C7
10µF
A1
R7
200Ω
+ C12
2200pF
OUT R-ch
2.5V ± 1.2V
R8
200Ω
OUT L-ch
2.5V ± 1.2V
+ C11
2200pF
R1
680Ω
A1, A2; NJM2100 or LM833
FIGURE 13. Single +5V Power Supply, with LPF, I/V Amp Application Circuit for Portable Digital Audio.
11 PCM67/69A
®
11 Page | ||
| Páginas | Total 13 Páginas | |
| PDF Descargar | [ Datasheet PCM67.PDF ] | |
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