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Burr-Brown Corporation

PCM1720 Datasheet Preview

PCM1720 Datasheet

Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE

No Preview Available !

® 49%
PCMF1P7O20 ®
PCM1720
TM Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
MPEG2/AC-3 COMPATIBLE
FEATURES
q ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
q COMPLETE STEREO DAC: Includes Digital
Filter and Output Amp
q DYNAMIC RANGE: 96dB
q MULTIPLE SAMPLING FREQUENCIES:
16kHz to 96kHz
8X Oversampling at All Sampling
Frequencies
q SYSTEM CLOCK: 256fS/384fS
q NORMAL OR I2S DATA INPUT FORMATS
q SELECTABLE FUNCTIONS:
Soft Mute
Digital Attenuator (256 Steps)
Digital De-emphasis
q OUTPUT MODE: Left, Right, Mono, Mute
DESCRIPTION
The PCM1720 is a complete low cost stereo audio
digital-to-analog converter (DAC), operating off of a
256fS or 384fS system clock. The DAC contains a 3rd-
order ∆Σ modulator, a digital interpolation filter, and
an analog output amplifier. The PCM1720 can accept
16-, 20-, or 24-bit input data in either normal or I2S
formats.
The digital filter performs an 8X interpolation func-
tion and includes selectable features such as soft mute,
digital attenuation and digital de-emphasis. The
PCM1720 can accept standard digital audio sampling
frequencies as well as one-half and double sampling
frequencies.
The PCM1720 is ideal for applications which combine
compressed audio and video data such as DVD, DVD-
ROM, set-top boxes and MPEG sound cards.
BCKIN
LRCIN
DIN
ML
MC
MD
RSTB
Serial
Input
I/F
Mode
Control
I/F
8X Oversampling
Digital Filter
with Function
Controller
Multi-level
Delta-Sigma
Modulator
DAC
Multi-level
Delta-Sigma
Modulator
DAC
Low-pass
Filter
Low-pass
Filter
BPZ-Cont.
256fS/384fS
Open Drain
Power Supply
VOUTL
CAP
VOUTR
ZERO
SCKI
VCC AGND VDD DGND
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
Internet: http://www.burr-brown.com/ • FAXLine: (800) 548-6133 (US/Canada Only) • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132
© 1996 Burr-Brown Corporation
PDS-1333B
Printed in U.S.A. August, 1996




Burr-Brown Corporation

PCM1720 Datasheet Preview

PCM1720 Datasheet

Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE

No Preview Available !

SPECIFICATIONS
All specifications at +25°C, +VCC = +VDD = +5V, fS = 44.1kHz, and 16-bit input data, SYSCLK = 384fS, unless otherwise noted.
PCM1720
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RESOLUTION
DATA FORMAT
Audio Data Format
Data Bit Length
Sampling Frequency (fS)
Internal System Clock Frequency
DIGITAL INPUT/OUTPUT LOGIC LEVEL
DYNAMIC PERFORMANCE(1)
THD+N at fS (0dB)
THD+N at –60dB
Dynamic Range
Signal-to-Noise Ratio(2)
Channel Separation
DC ACCURACY
Gain Error
Gain Mismatch, Channel-to-Channel
Bipolar Zero Error
ANALOG OUTPUT
Output Voltage
Center Voltage
Load Impedance
DIGITAL FILTER PERFORMANCE
Passband
Stopband
Passband Ripple
Stopband Attenuation
Delay Time
De-emphasis Error
INTERNAL ANALOG FILTER
–3dB Bandwidth
Passband Response
POWER SUPPLY REQUIREMENTS
Voltage Range
Supply Current: ICC + IDD
TEMPERATURE RANGE
Operation
Storage
Standard fS
One-half fS
Double fS
fS = 44.1kHz
fS = 96kHz
fS = 44.1kHz
fS = 96kHz
fS = 44.1kHz
fS = 96kHz
fS = 44.1kHz
fS = 96kHz
fS = 44.1kHz
VOUT = VCC/2 at BPZ
Full Scale (0dB)
AC Load
f = 20kHz
VDD, VCC
VCC = VDD = 5V, fS = 44.1kHz
VCC = VDD = 5V, fS = 96kHz
16
32
16
64
90
92
90
5
0.555
–35
–0.2
4.5
–25
–55
Standard/I2S
16/20/24
Selectable
44.1
22.05
88.2
256fS/384fS
TTL
–90
–88
–34
–31
96
93
100
97
97
±1.0
±1.0
±30
0.62 x VCC
VCC/2
11.125/fS
100
–0.16
5
18
25
24
48
24
96
–80
±5.0
±5.0
0.445
±0.17
+0.55
5.5
25
35
+85
+100
Bits
kHz
kHz
kHz
dB
dB
dB
dB
dB
dB
dB
dB
dB
% of FSR
% of FSR
mV
Vp-p
VDC
k
fS
fS
dB
dB
sec
dB
kHz
dB
VDC
mA
mA
°C
°C
NOTES: (1) Dynamic performance specs are tested with 20kHz low pass filter and THD+N specs are tested with 30kHz LPF, 400Hz HPF, Average-Mode. (2) SNR
is tested with Infinite Zero Detection off.
The information provided herein is believed to be reliable; however, BURR-BROWN assumes no responsibility for inaccuracies or omissions. BURR-BROWN assumes
no responsibility for the use of this information, and all use of such information shall be entirely at the user’s own risk. Prices and specifications are subject to change
without notice. No patent rights or licenses to any of the circuits described herein are implied or granted to any third party. BURR-BROWN does not authorize or warrant
any BURR-BROWN product for use in life support devices and/or systems.
®
PCM1720
2


Part Number PCM1720
Description Stereo Audio DIGITAL-TO-ANALOG CONVERTER MPEG2/AC-3 COMPATIBLE
Maker Burr-Brown Corporation
Total Page 13 Pages
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