AK8151A

AK8151A
1.8V/3.3V Single-PLL
Clock Generator
AK8151A
Features




Description
The AK8151A is a single-PLL clock generator IC with
two outputs. The high performance PLL locks to the
master clock input, generating a low jitter, highly
accurate clock output without an external crystal.
Input Frequency:
27 MHz (1.8V or 3.3V)
PLL Output Frequency:
Selectable by SEL pin setting
60 MHz or 72 MHz (1.8V or 3.3V)
Low Jitter Performance:
Period (1): 25 ps typ.
Low Current Consumption:
The integrated PLL generates 60MHz or 72MHz with
27 MHz input clock. The output frequency is
selectable by SEL pin.
The AK8151A has two kinds of voltage supply pins.
One is for the core and the other is for each of the
two output buffers. The core requires 1.8V supply
and the output buffers require 1.7V - 1.9V or 2.7V 3.6V supply. Not only the output but also the input
accepts 1.8V or 3.3V input clock from Crystal
Oscillator.
VDDO1 = 3.3V, VDDO2=1.8V, No load




11 mW Typ. (CLKOUT=60MHz)
13 mW Typ. (CLKOUT=72MHz)
Output Load:
15 pF Max
Supply Voltage:
VDD
: 1.7-1.9 V
VDDO1, 2:1.7-1.9 V or 2.7V-3.6V
Operating Temperature Range:
-20 to +85℃
Package:
8-pin USON (2.0mm x 2.0mm)
Applications


Digital Still Camera
Digital Video Camera
Block Diagram
VDD
ICLK
INPUT
Buffer
PLL
SEL
GND
VDDO1
OUTPUT
Buffer1
CLKOUT1
OUTPUT
Buffer2
CLKOUT2
VDDO2
AK8151A Single PLL with Two Outputs Clock Generator
MS1092-E-00
Jun-2011
1
AK8151A
PIN DESCRIPTION
1:CLKOUT1
8:VDD
2:ICLK
7:GND
3:SEL
6:VDDO2
4:VDDO1
5: CLKOUT2
Package: 8-Pin USON ( Top View)
Pin No.
Pin Name
Pin
Type
1
CLKOUT1
OUT
2
ICLK
IN
3
SEL
IN
4
VDDO2
--
5
CLKOUT2
6
7
8
VDDO1
VSS
VDD
OUT
----
Description
60MHz or 72MHz output.
One of which is selected by SEL pin.
27 MHz input. 1.8V or 3.3V available.
Select pin for Output Frequency (CLKOUT1 and CLKOUT2).
1.8V or 3.3V available.
“L” : 60MHz “H” : 72MHz
Power supply of Output Buffer for CLKOUT2.
60MHz or 72MHz output.
One of which is selected by SEL pin.
Power supply of Output Buffer for CLKOUT1.
Ground
Power supply
(1)
(1) Internal pull down 200k(Typ.)
Ordering Information
Part Number
Marking
Shipping Packaging
Package
Temperature
Range
AK8151AU
151A
Tape and Reel
8-pin USON
-20 to 85 ℃
Jun-2011
MS1092-E-00
-2-
AK8151A
Absolute Maximum Rating
Over operating free-air temperature range unless otherwise noted (1)
Items
Symbol
Ratings
Unit
VDD
-0.3 to 4.6
V
Input Voltage
Vin
VSS-0.3 to 3.6
V
Input Current (any pins except supplies)
IIN
±10
mA
Tstg
-55 to 130
C
Supply Voltage
Storage Temperature
Note
(1) Stress beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device.
These are stress ratings only. Functional operation of the device at these or any other conditions beyond those
indicated under “Recommended Operating Conditions” is not implied. Exposure to absolute-maximum-rating
conditions for extended periods may affect device reliability. Electrical parameters are guaranteed only over the
recommended operating temperature range.
ESD Sensitive Device
This device is manufactured on a CMOS process, therefore, generically susceptible
to damage by excessive static voltage. Failure to observe proper handling and
installation procedures can cause damage. AKM recommends that this device is handled with
appropriate precautions.
Recommended Operation Conditions
Parameter
Operating Temperature
Symbol
Conditions
Min
Typ
Max
Unit
85
C
V
Ta
-20
Supply Voltage 1
VDD
1.7
1.8
1.9
Supply Voltage 2
VDDO1
VDDO2
1.8V output
1.7
1.8
1.9
3.3V output
2.7
3.3
3.6
Input Clock Frequency
Fin
Output Load Capacitance
30
Cp
MHz
27.0
Input Clock Duty Cycle
Pin: CLKOUT1,2
MS1092-E-00
V
70
%
15
pF
Jun-2011
-3-
AK8151A
DC Characteristics
All specifications at VDD: 1.7 to 1.9V, VDDO1,2: 1.7 to 1.9V or 2.7 to 3.6V, Ta: -20 to +85℃, unless otherwise noted
Parameter
Conditions
Symbol
High level input voltage
VIH
Min
Pin: ICLK
VDDI: 1.7-1.9V or 2.7-3.6V
0.7*VDDI
0.7*VDDI
Typ
Max
Unit
V
Low level input voltage
VIL
High level input voltage
VIH
Low level input voltage
VIL
Pin: SEL
VDDI: 1.7-1.9V or 2.7-3.6V
Input leakage current 1
IL 1
Pin: ICLK
-10
+10
µA
Input leakage current 2
IL 2
Pin: SEL
-10
+40
µA
High level output voltage
VOH
12M
IOH= -5mA
Low level output voltage
VOL
12M
IOH= +5mA
VDDO2=1.8V,
Power Consumption
0.2*VDDI
0.8*VDDO1
0.8*VDDO2
V
0.2*VDDO1
0.2*VDDO2
V
VDD=1.8V, VDDO1 = 3.3V, No load
W1
60MHz output
11
W2
72MHz output
13
VDDO2=3.3V, VDD=1.8V, VDDO1 = 3.3V, No load
60MHz output
W3
72MHz output
W4
V
0.3*VDDI
mW
16
mW
19
VDDI: Power Supply for Input clock generator such as Crystal Oscillator.
AC Characteristics
All specifications at VDD: 1.7 to 1.9V, VDDO1,2: 1.7 to 1.9V or 2.7 to 3.6V, Ta: -20 to +85℃, unless otherwise noted
Parameter
Symbol
Output Clock Frequency
Output Clock Duty Cycle
Output Clock Rise Time
Period Jitter
(2) (3)
Output Lock Time
(2) (3)
TYP
MAX
Unit
Pin: CLKOUT1, 2
SEL=L
60
MHz
Pin: CLKOUT1, 2
SEL=H
72
MHz
(2) (3)
Pin: CLKOUT1, 2
trise
tfall
Jit
(1)(3)
MIN
fo
(2) (3)
Output Clock Fall Time
Conditions
tlock
45
Pin: CLKOUT1, 2
0.2VDD to 0.8VDD
Pin: CLKOUT1, 2
0.2VDD to 0.8VDD
Pin: CLKOUT1, 2
1
Pin: CLKOUT1, 2
Power-up
50
55
%
3.0
ns
3.0
ns
25
ps
3
ms
(1) The time that output reaches the target frequency within accuracy of ±0.1% from the point that the power
supply reaches VDD
(2) With the load capacitance specified by the recommended operation conditions
(3) Design value
Jun-2011
MS1092-E-00
-4-
AK8151A
Package Information

Mechanical data (Units:mm)
 Marking
5 1 A
YMA
c
a: #1 Pin Index
b: Part number
c: Date code (3 digits)
b
a
1pin
AKM and the logo -
- are the brand of AKM’s IC’s and identify that AKM
continues to offer the best choice for high performance mixed-signal solution under this
brand.
MS1092-E-00
Jun-2011
-5-
AK8151A
 RoHS Compliance
All integrated circuits form Asahi Kasei Microdevices Corporation (AKM)
assembled in “lead-free” packages* are fully compliant with RoHS.
(*) RoHS compliant products from AKM are identified with “Pb free” letter indication on
product label posted on the anti-shield bag and boxes.
IMPORTANT NOTICE
 These products and their specifications are subject to change without notice.
When you consider any use or application of these products, please make inquiries the sales
office of Asahi Kasei Microdevices Corporation (AKM) or authorized distributors as to current
status of the products.
 Descriptions of external circuits, application circuits, software and other related information
contained in this document are provided only to illustrate the operation and application
examples of the semiconductor products. You are fully responsible for the incorporation of
these external circuits, application circuits, software and other related information in the design
of your equipments. AKM assumes no responsibility for any losses incurred by you or third
parties arising from the use of these information herein. AKM assumes no liability for
infringement of any patent, intellectual property, or other rights in the application or use of such
information contained herein.
 Any export of these products, or devices or systems containing them, may require an export
license or other official approval under the law and regulations of the country of export
pertaining to customs and tariffs, currency exchange, or strategic materials.
 AKM products are neither intended nor authorized for use as critical componentsNote1) in any
safety, life support, or other hazard related device or systemNote2), and AKM assumes no
responsibility for such use, except for the use approved with the express written consent by
Representative Director of AKM. As used here:
Note1) A critical component is one whose failure to function or perform may reasonably be expected to result,
whether directly or indirectly, in the loss of the safety or effectiveness of the device or system containing it, and
which must therefore meet very high standards of performance and reliability.
Note2) A hazard related device or system is one designed or intended for life support or maintenance of safety
or for applications in medicine, aerospace, nuclear energy, or other fields, in which its failure to function or
perform may reasonably be expected to result in loss of life or in significant injury or damage to person or
property.
 It is the responsibility of the buyer or distributor of AKM products, who distributes, disposes of,
or otherwise places the product with a third party, to notify such third party in advance of the
above content and conditions, and the buyer or distributor agrees to assume any and all
responsibility and liability for and hold AKM harmless from any and all claims arising from the
use of said product in the absence of such notification.
Jun-2011
MS1092-E-00
-6-
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