PLL1705
PLL1706
SLES046A − AUGUST 2002 − REVISED SEPTEMBER 2002
3.3ĆV DUAL PLL MULTICLOCK GENERATOR
FEATURES
D 27-MHz Master Clock Input
D Generated Audio System Clock:
− SCKO0: 768 fS (fS = 44.1 kHz)
− SCKO1: 384 fS, 768 fS (fS = 44.1 kHz)
− SCKO2: 256 fS (fS = 32, 44.1, 48, 64, 88.2,
96 kHz)
− SCKO3: 384 fS (fS = 32, 44.1, 48, 64, 88.2,
96 kHz)
D Zero PPM Error Output Clocks
D Low Clock Jitter: 50 ps (Typical)
D Multiple Sampling Frequencies:
− fS = 32, 44.1, 48, 64, 88.2, 96 kHz
D 3.3-V Single Power Supply
D PLL1705: Parallel Control
PLL1706: Serial Control
D Package: 20-Pin SSOP (150 mil), Lead-Free
Product
APPLICATIONS
D DVD Players
D DVD Add-On Cards for Multimedia PCs
D Digital HDTV Systems
D Set-Top Boxes
DESCRIPTION
The PLL1705† and PLL1706† are low cost, phase-locked
loop (PLL) multiclock generators. The PLL1705 and
PLL1706 can generate four system clocks from a 27-MHz
reference input frequency. The clock outputs of the
PLL1705 can be controlled by sampling frequency-control
pins and those of the PLL1706 can be controlled through
serial-mode control pins. The device gives customers both
cost and space savings by eliminating external
components and enables customers to achieve the very
low-jitter performance needed for high performance audio
DACs and/or ADCs. The PLL1705 and PLL1706 are ideal
for MPEG-2 applications which use a 27-MHz master
clock such as DVD players, DVD add-on cards for
multimedia PCs, digital HDTV systems, and set-top
boxes.
FUNCTIONAL BLOCK DIAGRAM
(ML)
SR
(MC)
FS2
(MD)
FS1
CSEL
Mode Control Interface
VCC AGND VDD1−3 DGND1−3
Power Supply
Reset
PLL2
XT1
OSC
PLL1
XT2
Divider
( ): PLL1706
MCKO1
MCKO2
SCKO0
Divider
Divider
SCKO1
SCKO2
SCKO3
Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of Texas Instruments
semiconductor products and disclaimers thereto appears at the end of this data sheet.
†The PLL1705 and PLL1706 use the same die and they are electrically identical except for mode control.
PRODUCTION DATA information is current as of publication date. Products
conform to specifications per the terms of Texas Instruments standard warranty.
Production processing does not necessarily include testing of all parameters.
Copyright 2002, Texas Instruments Incorporated
