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Burr-Brown Corporation

PCM1721 Datasheet Preview

PCM1721 Datasheet

DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL

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® PCM1F479P2%O1
PCM1721
TM Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
WITH PROGRAMMABLE PLL
FEATURES
q ACCEPTS 16-, 20-, OR 24-BIT INPUT DATA
q COMPLETE STEREO DAC: Includes Digital
Filter and Output Amp
q DYNAMIC RANGE: 94dB
q MULTIPLE SAMPLING FREQUENCIES:
16kHz, 22.05kHz, 24kHz
32kHz, 44.1kHz, 48kHz
64kHz, 88.2kHz, 96kHz
q PROGRAMMABLE PLL CIRCUIT:
256fS/384fS from 27MHz Master Clock
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 PCM1721 is a complete low cost stereo audio
digital-to-analog converter (DAC) with a phase-locked
loop (PLL) circuit included. The PLL derives either
256fS or 384fS system clock from an external 27MHz
reference frequency. The DAC contains a 3rd-order ∆Σ
modulator, a digital interpolation filter, and an analog
output amplifier. The PCM1721 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 PLL
can be programmed for sampling at standard digital
audio frequencies as well as one-half and double
sampling frequencies.
The PCM1721 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
Multi-level
Delta-Sigma
Modulator
256fS/384fS
BPZ-Cont.
Clock/OSC Manager and PLL
DAC
DAC
Low-pass
Filter
Low-pass
Filter
Open Drain
Power Supply
VOUTL
CAP
VOUTR
ZERO
SCKI
MCKI
SCKO
VCP PGND 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-11319A
PPCrintMed 1in 7U.2S.A1. August, 1996
®




Burr-Brown Corporation

PCM1721 Datasheet Preview

PCM1721 Datasheet

DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL

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.
PCM1721
PARAMETER
CONDITIONS
MIN
TYP
MAX
UNITS
RESOLUTION
DATA FORMAT
Audio Data Format
Data Bit Length
Sampling Frequency (fS)
PLL PERFORMANCE
Master Clock Input Frequency
Generated Sysclk Frequency
Generated Sysclk Jitter
Generated Sysclk Transient(1)
Generated Sysclk Duty Cycle
DIGITAL INPUT/OUTPUT LOGIC LEVEL
DYNAMIC PERFORMANCE(2)
THD+N at fS (0dB)
THD+N at –60dB
Dynamic Range (EIAJ Method)
Signal-to-Noise Ratio(3)
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 + ICP
ICC + IDD + ICP
TEMPERATURE RANGE
Operation
Storage
Standard fS
One-half fS
Double fS
fM = 27MHz
fM = 27MHz
fM = 27MHz, CL = 15pF
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
VCC = VDD = VCP
fS = 44.1kHz
fS = 96kHz
16
32
16
64
40
90
90
88
5
0.555
–35
–0.2
4.5
0
–55
Standard/I2S
16/20/24
Selectable
44.1
22.05
88.2
27
256fS/384fS
50
TTL
–89
–87
–31
–29
94
91
94
92
92
±1.0
±1.0
±30
0.62 x VCC
VCC/2
11.125/fS
100
–0.16
5
36
49
24
48
24
96
±250
20
60
–80
±5.0
±5.0
0.445
±0.17
+0.55
5.5
43
58
+70
+100
Bits
kHz
kHz
kHz
MHz
ps
ms
%
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) Sysclk transient is the maximum frequency lock time when the PLL frequency is changed. (2) Dynamic performance specs are tested with 20kHz low
pass filter and THD+N specs are tested with 30kHz LPF, 400Hz HPF, Average-Mode. (3) SNR is tested at 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.
®
PCM1721
2


Part Number PCM1721
Description DIGITAL-TO-ANALOG CONVERTER WITH PROGRAMMABLE PLL
Maker Burr-Brown Corporation
Total Page 16 Pages
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