®
PCM
171
8
®
PCM1718E
Stereo Audio
DIGITAL-TO-ANALOG CONVERTER
TM
FEATURES
q
ACCEPTS 16- or 18-BIT I
2
S, OR 18-BIT
NORMAL INPUT DATA
q
COMPLETE STEREO DAC:
8X Oversampling Digital Filter
Multi-Level Delta-Sigma DAC
Analog Low Pass Filter
Output Amplifier
q
HIGH PERFORMANCE:
–90dB THD+N
96dB Dynamic Range
100dB SNR
q
SYSTEM CLOCK: 256fs or 384fs
q
WIDE POWER SUPPLY: +2.7V to +5.5V
q
SELECTABLE FUNCTIONS:
Soft Mute
Digital De-emphasis
q
SMALL 20-PIN SSOP PACKAGE
DESCRIPTION
The PCM1718 is a complete low cost stereo, audio
digital-to-analog converter, including digital interpo-
lation filter, 3rd-order delta-sigma DAC, and analog
output amplifiers. PCM1718 is fabricated on a highly
advanced 0.6µ CMOS process. PCM1718 accepts 18-
bit normal input data format, or 16- or 18-bit I
2
S data
format.
The digital filter performs an 8X interpolation func-
tion, as well as special functions such as soft mute and
digital de-emphasis.
PCM1718 is suitable for a wide variety of cost-sensitive
consumer applications where good performance is re-
quired. Its low cost, small size, and single power supply
make it ideal for BS tuners, keyboards, MPEG audio,
PCMCIA audio cards (ZV port), MIDI applications,
and set-top boxes.
BCKIN
LRCIN
DIN
Serial
Input
I/F
8X Oversampling
Digital Filter with
Multi Function
Control
Multi-level
Delta-Sigma
Modulator
DAC
Output Amp
and
Low-pass
Filter
V
OUT
L
D/C_L
MUTE
DM0
DM1
FORMAT
Mode
Control
I/F
Multi-level
Delta-Sigma
Modulator
DAC
Output Amp
and
Low-pass
Filter
V
OUT
R
D/C_R
ZERO
Open Drain
RSTB
Reset
Clock/OSC Manager
Power Supply
XTI XTO
CLKO
V
CC
AGND
V
DD
DGND
InternationalAirportIndustrialPark • MailingAddress:POBox11400,Tucson,AZ85734 • StreetAddress:6730S.TucsonBlvd.,Tucson,AZ 85706 • Tel:(520)746-1111 • Twx:910-952-1111
Internet:http://www.burr-brown.com/ • FAXLine:(800)548-6133(US/CanadaOnly) • Cable:BBRCORP • Telex:066-6491 • FAX:(520)889-1510 • ImmediateProductInfo:(800)548-6132
®
© 1996 Burr-Brown Corporation
PDS-1325A
1
Printed in U.S.A.
PCM1718E
June, 1996
BURR-BROWN [ BURR-BROWN CORPORATION ]
