SY87739LHI Micrel Inc, SY87739LHI Datasheet - Page 2

• Manufacturer Part Number: SY87739LHI
• Description: IC SYNTHESIZER FRACT 3.3V 32TQFP
• Manufacturer: Micrel Inc
• Type: Fractional Synthesizerr

Specifications of SY87739LHI

• Input: PECL
• Output: PECL
• Frequency - Max: 729MHz
• 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: 729MHz
• For Use With: 576-1406 - BOARD EVAL N SY87739 EXPERIMENT
• Lead Free Status / RoHS Status: Contains lead / RoHS non-compliant

Micrel, Inc.
M9999-062807
[e-mail] or [phone]
REFCLK+
REFCLK-
PROGCS
PROGSK
PROGDI
2, 5, 11, 12, 13,
PACKAGE/ORDERING INFORMATION
15, 16, 19, 20
VCCA
PIN DESCRIPTION
Pin Number
23, 28, 29
NC
NC
21, 22
25, 32
26, 27
30, 31
9, 17,
1, 24
3, 4
10
14
18
6
7
8
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
CLKOUT±
Pin Name
REFCLK±
PROGCS
PROGSK
WRVCF±
LOCKED
PROGDI
FNVCF±
VCCO
GNDA
VCCA
GND
VCC
NC
24
23
22
21
20
19
18
17
VCCA
NC
CLKOUT+
CLKOUT-
NC
NC
VCCO
VCC
Pin Function
Analog Supply (Power). Set to same voltage as V
No Connect. These pins are to be left unconnected.
Reference Clock Input (Differential PECL Input): This is a clock derived from an oscillator or
other sufficiently accurate frequency source. The frequency provided at this input determines,
along with the programming, the output frequency at REFOUT±. Micrel recommends using a
27.000MHz frequency source.
Program Interface Chip Select (TTL Input): This signal forms part of the MicroWire™ interface.
When active high, this signal permits the acquisition of serial data. A falling edge on this input
causes SY87739L to re-acquire lock to a new frequency, based on the program downloaded to it.
Program Interface Data In (TTL Input): One data bit is sampled on each rising edge of PRGSK,
while PROGCS is active high.
Program Interface Serial Clock (TTL Input): One bit of configuration data is read in each clock
cycle.
Supply (Power): +3.15V to +3.45V.
Ground.
Lock Output (TTL Output): This indicates proper operation of all the blocks in the clock synthesis
chain. Logic high indicates that SY87739L 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.
Output Supply (Power). Set to same voltage as V
Reference Clock Output (Differential PECL Output): This is the synthesized clock generated from
REFCLK±. It can be used to supply a reference clock to a data recovery device, such as Micrel’s
SY87721L.
Analog Ground.
Wrapper Filter (Analog I/O): These pins connect to the output from 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.
Fractional-N Filter (Analog I/O): These pins connect to the output from 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.
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
SY87739LHI
SY87739LHITR
SY87739LHY
SY87739LHYTR
(2)
(2, 3)
2
Package
H32-2
H32-2
H32-2
H32-2
Type
(1)
Operating
Industrial
Industrial
Industrial
Industrial
CC
CC
Range
.
.
Pb-Free bar line indicator
Pb-Free bar line indicator
SY87739LHY with
SY87739LHY with
A
SY87739LHI
SY87739LHI
= 25°C, DC Electricals only.
Package
Marking
SY87739L
Matte-Sn
Matte-Sn
Pb-Free
Pb-Free
Finish
Sn-Pb
Sn-Pb
Lead