PLL1705
PLL1706
SLES046A – AUGUST 2002 – REVISED SEPTEMBER 2002
3.3-V DUAL PLL MULTICLOCK GENERATOR
FEATURES
APPLICATIONS
D
D
D
D
DVD Players
D
D
27-MHz Master Clock Input
Generated Audio System Clock:
DVD Add-On Cards for Multimedia PCs
Digital HDTV Systems
Set-Top Boxes
– SCKO0: 768 f (f = 44.1 kHz)
S
S
– SCKO1: 384 f , 768 f (f = 44.1 kHz)
S
S
S
– SCKO2: 256 f (f = 32, 44.1, 48, 64, 88.2,
S
S
DESCRIPTION
96 kHz)
– SCKO3: 384 f (f = 32, 44.1, 48, 64, 88.2,
†
†
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
PLL1705can be controlled by sampling frequency-control
pins and those of the PLL1706 can be controlled through
serial-modecontrolpins. Thedevicegivescustomersboth
cost and space savings by eliminating external
components and enables customers to achieve the very
low-jitterperformance 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.
S
S
96 kHz)
D
D
D
Zero PPM Error Output Clocks
Low Clock Jitter: 50 ps (Typical)
Multiple Sampling Frequencies:
– f = 32, 44.1, 48, 64, 88.2, 96 kHz
S
D
D
3.3-V Single Power Supply
PLL1705: Parallel Control
PLL1706: Serial Control
D
Package: 20-Pin SSOP (150 mil), Lead-Free
Product
FUNCTIONAL BLOCK DIAGRAM
(ML)
SR
(MC) (MD)
FS2
FS1
CSEL
V
CC
AGND
V 1–3 DGND1–3
DD
ModeControl Interface
Power Supply
Reset
PLL2
XT1
OSC
XT2
PLL1
Divider
Divider
SCKO2
Divider
SCKO3
MCKO1 MCKO2
( ): PLL1706
SCKO0
SCKO1
Pleasebe 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