SY87729LHG Micrel Inc, SY87729LHG Datasheet - Page 2

• Manufacturer Part Number: SY87729LHG
• Description: IC SYNTHESIZER FRACT 3.3V 32TQFP
• Manufacturer: Micrel Inc
• Type: Fractional Synthesizerr

Specifications of SY87729LHG

• Input: PECL
• Output: PECL
• Frequency - Max: 365MHz
• Voltage - Supply: 3.15 V ~ 3.45 V
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 32-TQFP Exposed Pad, 32-eTQFP, 32-HTQFP, 32-VQFP
• Frequency-max: 365MHz
• For Use With: 576-1404 - BOARD EVAL N SY87729 EXPERIMENT
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant
• Other names: 576-1405

Micrel, Inc.
M9999-062807
[e-mail] or [phone]
CLKOUT± – Differential PECL Output
generated from REFCLK±. It can be used to supply a
reference clock to a data recovery device, such as Micrel’s
SY87721L.
LOCKED – TTL Output
blocks in the clock synthesis chain. Logic high indicates
that SY87729L is generating the expected frequency at the
CLKOUT± output. Logic low indicates that one or more PLL
in the clock synthesis chain has yet to achieve proper lock.
REFCLK± – Differential PECL Input
oscillator or other sufficiently accurate frequency source.
The frequency provided at this input determines, along with
the programming, what the output frequency at REFOUT±
will be. Micrel recommends using a 27.000MHz frequency
source.
PROGCS – TTL Input
the MicroWire interface. When active high, this signal permits
the acquisition of serial data. A falling edge on this input
causes SY87729L to re-acquire lock to a new frequency,
based on the program downloaded to it.
REFCLK+
REFCLK–
PROGCS
PROGSK
PROGDI
PACKAGE/ORDERING INFORMATION
PIN NAMES
VCCA
Reference Clock Output. This is the synthesized clock
Lock Output. This indicates proper operation of all the
Reference Clock Input. This is a clock derived from an
Program Interface Chip Select. This signal forms part of
NC
NC
32-pin EPAD-TQFP (H32-2)
1
2
3
4
5
6
7
8
32 31 30 29 28 27 26 25
9
10 11 12 13 14 15 16
EPAD-TQFP
Top View
H32-1
24
23
22
21
20
19
18
17
VCCA
NC
CLKOUT+
CLKOUT–
NC
NC
VCCO
VCC
Ordering Information
Notes:
1. Contact factory for die availability. Dice are guaranteed at T
2. Tape and Reel.
3. Pb-Free package is recommended for new designs.
Part Number
SY87729LHI
SY87729LHITR
SY87729LHY
SY87729LHYTR
(3)
(2)
(2, 3)
2
PROGSK – TTL Input
data is read in each clock cycle.
PROGDI – TTL Input
each rising edge of PRGSK, while PROGCS is active high.
FNVCF± – Analog I/O
the fractional-N synthesizer charge pump, as well as the
input to the corresponding Voltage Controlled Oscillator
(VCO). A filter network, as described below, converts the
charge pump current to a voltage, and adjusts loop
bandwidth.
WRVCF± – Analog I/O
the wrapper synthesizer charge pump, as well as the input
to the corresponding VCO. A filter network, as described
below, converts the charge pump current to a voltage, and
adjusts loop bandwidth.
VCC
VCCA
VCCO
GND
GNDA
NC
Program Interface Serial Clock. One bit of configuration
Program Interface Data In. One data bit is sampled on
Fractional-N Filter. These pins connect to the output from
Wrapper Filter. These pins connect to the output from
Package
H32-2
H32-2
H32-2
H32-2
Type
(1)
Analog Supply Voltage
Output Supply Voltage
Analog Ground
Supply Voltage
Ground
These pins are to be left unconnected
Operating
Industrial
Industrial
Industrial
Industrial
Range
Pb-Free bar line indicator
Pb-Free bar line indicator
SY87729LHY with
SY87729LHY with
A
SY87729LHI
SY87729LHI
= 25°C, DC Electricals only.
Package
Marking
AnyClock
SY87729L
Matte-Sn
Matte-Sn
Pb-Free
Pb-Free
Finish
Sn-Pb
Sn-Pb
Lead
®