SY87701LHGTR(2006) 查看數據表（PDF） - Micrel

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SY87701LHGTR
(Rev.:2006)

3.3V 32-1250Mbps AnyRate® CLOCK AND DATA RECOVERY

Micrel 

Micrel, Inc.

28-PIN APPLICATION EXAMPLE

SY87701L

123456

VCC

(R17 - R22)

5kΩ x 6

R8

130Ω

LED

D2

GND

Capacitor Pads

VCC

(1206 format)

R1

R2

C1

RDIN

C2

R3

R4

See Table 1

GND

1 VCCA

2 LFIN

3 DIVSEL1

4 RDINP

5 RDINN

6 FREQSEL1

7 REFCLK

8 FREQSEL2

9 FREQSEL3

LOOP FILTER

NETWORK

REFCLK

(TTL)

NC

80Ω R5

C3

1.5µF

10 N/C

11 PLLSP

12 PLLSN

13 GND

14 GND

GND

XTAL

Oscillator

14

1

0.1µF C13

8

7

VCC

120Ω

R21

VCC 28

CD 27

DIVSEL2 26

RDOUTP 25

RDOUTN 24

VCCO 23

RCLKP 22

RCLKN 21

VCCO 20

TCLKP 19

TCLKN 18

CLKSEL 17

PLLRP 16

PLLRN 15

Ferrite Bead

BLM21A102

VCC

Stand Off

0.1µF FB1 22µF 0.1µF 22µF

C9

C8

C7

C6

0.1µF

0.1µF

C14

C15

J1

VCC

R7 Diode D1

1kΩ 1N4148

0.1µF

0.1µF

C16

C17

0.1µF

0.1µF

C18

C19

R6 50Ω

C4

1.0µF

If VCC = +3.3V:

R9 through R14 = 220Ω

VCC

C5

Pin 1 (VCCA)

0.1µF

C10

Pin 28 (VCC)

0.1µF

C11

Pin 23 (VCCO)

0.1µF

C12

Pin 20 (VCCO)

0.1µF

For AC-Coupling Only

C1 = C2 = 0.1µF

R1 = R2 = 680Ω

R3 = R4 = 1kΩ

For DC Mode Only

C1 = C2 = Shorted

R1 = R2 = 130Ω

R3 = R4 = 82Ω

Note:

1. C5 and C10-C12 are decoupling capacitors and should be kept as close

to the power pins as possible.

M9999-111506

hbwhelp@micrel.com or (408) 955-1690

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