8T49NS010 PDF 데이터시트 ( Data ) - Integrated Device Technology

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8T49NS010 기능

기능

Clock Synthesizer and Fanout Buffer/Divider

제조업체

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Clock Synthesizer

and Fanout Buffer/Divider

8T49NS010

DATA SHEET

General Description

The 8T49NS010 is a Clock Synthesizer and Fanout Buffer/Divider.

When used with an external crystal, the 8T49NS010 generates high

performance timing geared towards the communications and data-

com markets, especially for applications demanding extremely low

phase noise jitter, such as 10, 40 and 100GE.

The 8T49NS010 provides versatile frequency configurations and

output formats and is optimized to deliver excellent phase noise

performance. The device delivers an optimum combination of high

clock frequency and low phase noise performance, combined with

high power supply noise rejection.

The 8T49NS010 supports two types of output levels. FORMAT #1

Outputs provide an output level with 750mV typical swing, and

requires external DC termination. FORMAT #2 Outputs provide a

similar swing level which does not require DC termination.

The device can be configured through an I2C serial interface and is

offered in a lead-free (RoHS6) 56-pin VFQFN package.

The extended temperature range supports telecommunication and

networking end equipment requirements.

Features

• Ten differential outputs

• The input operates in full differential mode (LVDS, LVPECL) or

single-ended LVCMOS mode

• Can be driven from a crystal or differential clock

• Support of output power-down

• Excellent clock output phase noise

Offset Output Frequency Single-side Band Phase Noise

100kHz

156.25MHz

-144 dBc/Hz

• Phase Noise RMS, 12kHz to 20MHz integration range: 

84fs (typical)

• LVCMOS compatible I2C serial interface

• I2C control inputs are 3.3V tolerant

• Full 3.3V supply voltage

• Lead-free (RoHS 6) 56-pin VFQFN packaging

• -40°C to 85°C ambient operating temperature

Additional Ordering Information

Part/Order Number

Package

8T49NS010-156NLGI

56-pin VFQFN

Output Frequency (MHz)

156.25, 312.5, 625, 1250

8T49NS010 REVISION 1 11/19/14

8T49NS010 DATA SHEET

Table 1. Pin Descriptions1 (Continued)

Number

Name

Type

Input

Pullup

Input

Pullup

VDD_CP

Power

16 CP Output

VSS_CP

Power

VDD_FB

Power

VSS_FB

Power

VDD_LC_IN

Power

VSS_A2

Power

VDD_A2

Power

23 BIAS_CAP

24 BIAS_CAPR

25 Loop_Filter_R

26 Loop_Filter

VEE_A

Power

VDD_A

Power

29 NC Unused

30 NC Unused

nQCLK5

Output

QCLK5

Output

nQCLK6

Output

QCLK6

Output

VDD_CLK

Power

nQCLK7

Output

QCLK7

Output

nQCLK8

Output

QCLK8

Output

VDD_CLK

Power

nQCLK9

Output

QCLK9

Output

VSS_I2C

Power

SCLK

Input

Pullup

45 SDATA I/O Pullup

Description

Output Divider. Refer to Table 4C.

Power Supply Voltage to Charge Pump (3.3V).

Charge Pump.

Power Supply Ground for Charge Pump - Return for VDD_CP.

Power Supply Voltage to Feedback Divider (3.3V).

Power Supply Ground to Feedback Divider (3.3V). Return for VDD_FB.

Power Supply Voltage for LC Interface. (3.3V).

Power Supply Ground for VCO.

Power Supply Voltage for VCO.

Bias Capacitor.

Bias Capacitor Return.

Loop Filter Return.

Loop Filter Capacitor.

Power Supply ground for VCO. Return for VDD_A pin 28.

Power Supply for VCO.

No internal connection.

Differential clock output pair. FORMAT #1 or FORMAT #2 output levels.

Power Supply Voltage (3.3V).

Differential clock output pair. FORMAT #1 or FORMAT #2 output levels.

Power Supply Voltage (3.3V).

Differential clock output pair. FORMAT #1 or FORMAT #2 output levels.

Power Supply Ground for I2C. Return for Pin 48 VDD_I2C.

I2C clock input. LVCMOS interface levels.

I2C data Input/Output: LVCMOS interface levels. Open Drain Pin.

CLOCK SYNTHESIZER AND FANOUT BUFFER/DIVIDER

REVISION 1 11/19/14

4페이지

8T49NS010 DATA SHEET

Table 5A. Register Bits

Defaults

0 0011 0010

1 0000 0010

2 0000 0010

3 0000 0010

4 0000 0010

5 0000 0010

6 0000 0011

7 0000 0000

8 0000 0000

9 0000 0000

10 XXXX XXXX

11 0000 0000

12 0000 1111

13 1000 0001

14 0000 0000

15 0000 0000

16 0000 0010

17 0000 0010

18 0000 1001

19 0000 0000

20 0000 0000

21 0000 0000

22 0000 0000

23 0000 0010

24 0000 0010

25 0000 0010

26 0000 0000

27 0000 0000

28 0000 0000

29 0000 0000

30 0000 0000

31 0000 0000

MDIV[7]

Reserved

MDIV[6]

Reserved

MDIV[5]

Reserved

MDIV[4]

Reserved

MDIV[3]

Reserved

N[3]

Reserved

MDIV[2]

PWD_QCLK0

PWD_QCLK1

PWD_QCLK2

PWD_QCLK3

PWD_QCLK4

Reserved

MDIV[1]

OE_QCLK0

OE_QCLK1

OE_QCLK2

OE_QCLK3

OE_QCLK4

CP_CUR_C[1]

Reserved

MDIV[0]

PWD_EF_QCLK0

PWD_EF_QCLK1

PWD_EF_QCLK2

PWD_EF_QCLK3

PWD_EF_QCLK4

CP_CUR_C[0]

Reserved

PWD_QCLK5

PWD_QCLK6

N[2]

Reserved

HF_XTAL

Reserved

PWD_QCLK7

PWD_QCLK8

PWD_QCLK9

Reserved

OE_QCLK5

OE_QCLK6

N[1]

Reserved

PDIV[1]

SEL_VREG2P5

Reserved

OE_QCLK7

OE_QCLK8

OE_QCLK9

Reserved

PWD_EF_QCLK5

PWD_EF_QCLK6

N[0]

Reserved

PDIV[0]

REF_SEL

RELOCK

PWD_EF_QCLK7

PWD_EF_QCLK8

PWD_EF_QCLK9

Reserved

PIN_OVERRIDE

Reserved

REVISION 1 11/19/14

7 CLOCK SYNTHESIZER AND FANOUT BUFFER/DIVIDER

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[ 8T49NS010.PDF 데이터시트 ]

Integrated Device Technology에서 제조한 전자 부품 8T49NS010은 전자 산업 및 응용 분야에서
광범위하게 사용되는 반도체 소자입니다.

8T49NS010의 기능 및 특징 중 하나는 "Clock Synthesizer and Fanout Buffer/Divider" 입니다.

일반적으로, Integrated Device Technology에서 제조되는 전자부품들은 우수한 성능과
품질에 대한 신뢰성을 갖추고 있습니다.

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8T49NS010	Clock Synthesizer and Fanout Buffer/Divider	Integrated Device Technology