AK8186B

AK8186B Datasheet


AK8186B

Part Datasheet
AK8186B AK8186B AK8186B (pdf)
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AK8186B

Multi Output Clock Generator with Integrated 2.0GHz VCO AK8186B

Low phase noise PLL RMS Jitter < 300fs On-chip VCO tunes from 1.75GHz to 2.25GHz External VCO/VCXO to 500MHz optional 1 differential or 2 single-ended Inputs Reference Switchover/Holdover modes Lock Detect 3 pairs of 1GHz LVPECL outputs 2 pairs of 800MHz LVDS outputs 8 250MHz CMOS outputs two per LVDS Serial control register interface 3.3V+/-5% Operating Voltage 2.5V-3.3V LVPECL Drive Voltage Operating Temperature -40 to +85°C Package 64-pin Leadless QFN Pb free Pin compatible with AD9516-3

The AK8186B is a multi-output clock generator with sub-ps jitter performance. The on-chip VCO tunes from 1.75GHz to 2.25GHz.

The distribution section has three pairs of LVPECL buffers 6 outputs and two pairs of LVDS buffers 4 outputs /eight CMOS buffers two per LVDS outputs . The LVPECL outputs operate up to 1GHz, the LVDS outputs operate up to 800MHz and the CMOS outputs operate up to 250MHz.

Each pair of the outputs has a divider. The LVPECL outputs have the division range of 1 to The LVDS and CMOS outputs have the 1 to

The AK8186B operates at 3.3V and the LVPECL outputs are supplied independently from 2.375V to 3.6V. The operating temperature range is from -40 to +85°C. The part is available in a 9mm 9 mm 64-pin Leadless-QFN Pb free package.
ORDERING INFORMATION

Part Number AK8186B

Marking AK8186B

Shipping Packaging

Tape and Reel

Package
64-pin Leadless QFN

Temperature Range
-40 to 85 ℃
draft-E-02

Sep-2012

AK8186B

BLOCK DIAGRAM

REF_SEL

RSET

REFMON

REFIN/REF1 REFIN/REF2

REF1 REF2

REFERENCE SWITCHOVER

STATUS

BYPASS

DISTRIBUTION REFERENCE

R DIVIDER

P,P+1 PRESCALER

N DIVIDER

A/B COUNTER

VCO STATUS

VCO Divider

DIVIDE by 2 to 6

Divider 0 DIVIDE by
1 to 32

Divider 1 DIVIDE by
1 to 32

CPRSET

PLL REFERENCE

LOCK DETECT

PHASE FREQUENCY DETECTOR

HOLD

CHARGE PUMP

LVPECL

PD SYNC RESET
ORDERING 1 -

BLOCK 2 -

PIN DESCRIPTION 4 -

PIN - 4 PIN FUNCTION - 5 -

ABSOLUTE MAXIMUM 7 -

RECOMMENDED OPERATING CONDITIONS...................- 7 -

ELECTRICAL 7 -

POWER DISSIPATION - 7 -

PLL CHARACTERISTICS - 8 -

CLOCK INPUT CHARACTERISTICS - 9 -

CLOCK OUTPUT CHARACTERISTICS - 10 -

TIMING - 11 -

CLOCK OUTPUT ADDITIVE PHASE NOISE DISTRIBUTION ONLY VCO

DIVIDER NOT 12 -

CLOCK OUTPUT PHASE NOISE INTERNAL VCO USED - 13 -

CLOCK OUTPUT ABSOLUTE TIME JITTER CLOCK GENERATION USING

INTERNAL VCO - 14 -

CLOCK OUTPUT ABSOLUTE TIME JITTER CLOCK GENERATION USING

EXTERNAL VCXO - 14 -

CLOCK OUTPUT ADDITIVE TIME JITTER VCO DIVIDER NOT USED -

CLOCK OUTPUT ADDITIVE TIME JITTER VCO DIVIDER USED - 15 -

SERIAL CONTROL PORT - 16 -
- 17 -

LD, STATUS AND REFMON - 17 -

TIMING 18 -

THEORY OF OPERATION 19 -

OPERATIONAL CONFIGURATIONS - 19 -

Internal VCO and Clock Distribution - 19 -

External VCO and Clock Distribution.................... - 20 -

PLL - 21 -

REFERENCE INPUT - 21 -

REFERENCE - 22 -

R DIVIDER REFERENCE DIVIDER ......................... - 22 -

PHASE FREQUENCY DETECTOR PFD - 23 -

CHARGE PUMP CP - 23 -

On-Chip VCO - 23 -

External VCO/VCXO - 24 -

PLL EXTERNAL LOOP FILTER................................. - 24 -

Figure 12 Example of External Loop Filter for the

Internal VCO

Figure 13 Example of External
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Datasheet ID: AK8186B 515923