resonant crystal or LVCMOS/LVTTL single-ended reference
input
• Supports the following output frequencies:
Bank A/Bank B: 33.33MHz, 50MHz, 66.67MHz, 83.33MHz,
100MHz, 125MHz, 133.33MHz, and 166.67MHz
• VCO: 2GHz
• Slew rate control
• RMS period jitter: 10ps (typical)
• Output supply modes:
Core/Output
3.3V/3.3V
3.3V/2.5V
• -40°C to 85°C ambient operating temperature
• Available in both standard (RoHS 5) and lead-free (RoHS 6)
packages
B
LOCK
D
IAGRAM
F_SELA[0, 2]
Pullup
F_SELA1
Pulldown
25MHz
2
P
IN
A
SSIGNMENT
F_SELA2
F_SELA1
F_SELA0
SLEW1
SLEW0
GND
V
DD
nc
32 31 30 29 28 27 26 25
QA0
÷NA
0
QA1
V
DDA
V
DD
XTAL_OUT
XTAL_IN
GND
REF_SEL
REF_IN
1
2
3
4
5
6
7
8
9 10 11 12 13 14 15 16
nREF_OE
V
DDO
_
REF
REF_OUT
nc
GND
F_SELB1
MR/nOE
F_SELB0
24
23
22
21
20
19
18
17
GND
QA0
QA1
V
DDO
_
A
GND
QB0
QB1
V
DDO
_
B
XTAL_IN
OSC
XTAL_OUT
PLL
VCO
2GHz
QB0
÷NB
1
QB1
REF_IN
Pulldown
REF_SEL
Pulldown
2
F_SELB2
M =
÷
80
SLEW[1:0]
Pulldown
MR/nOE
Pulldown
F_SELB[2:0]
Pulldown
nREF_OE
Pullup
3
REF_OUT
ICS840S05I
32-Lead TQFP, E-Pad
7mm x 7mm x 1.0mm package body
Y package
Top View
The Preliminary Information presented herein represents a product in pre-production. The noted characteristics are based on initial product characterization
and/or qualification. Integrated Device Technology, Incorporated (IDT) reserves the right to change any circuitry or specifications without notice.
IDT
™
/ ICS
™
LVCMOS/LVTTL FREQUENCY SYNTHESIZER
1
ICS840S05AYI REV. A JULY 19, 2007
ICS840S05I
CRYSTAL-TO-LVCMOS/LVTTL FREQUENCY SYNTHESIZER
PRELIMINARY
T
ABLE
1. P
IN
D
ESCRIPTIONS
Number
1
2, 25
3,
4
5, 13, 20,
24, 27
6
7
8,
14,
16
9
10
11
12, 26
15
17
18, 19
21
22, 23
Name
V
DDA
V
DD
XTAL_OUT,
XTAL_IN
GND
REF_SEL
REF_IN
F_SELB2,
F_SELB1,
F_SELB0
nREF_OE
V
DDO_REF
REF_OUT
nc
MR/nOE
V
DDO_B
QB1, QB0
V
DDO_A
QA1, QA0
Power
Power
Input
Power
Input
Input
Input
Input
Power
Output
Unused
Input
Power
Output
Power
Output
Pulldown
Type
Description
Analog supply pin.
Core supply pin.
Crystal oscillator interface. XTAL_OUT is the output.
XTAL_IN is the input.
Power supply ground.
Reference select pin. When HIGH selects REF_IN. When LOW,
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