ADN2811ACPZ-CML Analog Devices Inc, ADN2811ACPZ-CML Datasheet

S/Rate 2.5/2.7Gbps CDR/ PA Low Power I.C

ADN2811ACPZ-CML

Manufacturer Part Number
ADN2811ACPZ-CML
Description
S/Rate 2.5/2.7Gbps CDR/ PA Low Power I.C
Manufacturer
Analog Devices Inc
Type
Clock and Data Recovery (CDR)r
Datasheet

Specifications of ADN2811ACPZ-CML

Output
CML
Frequency - Max
2.7GHz
Voltage - Supply
3 V ~ 3.6 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
48-LFCSP
Frequency-max
2.7GHz
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Input
-
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
FEATURES
Meets SONET requirements for jitter transfer/generation/
Quantizer sensitivity: 4 mV typical
Adjustable slice level: ±100 mV
Loss of signal detect range: 3 mV to 15 mV
Single reference clock frequency for both native SONET and
Choice of 19.44 MHz, 38.88 MHz, 77.76 MHz, or 155.52 MHz
LVPECL/LVDS/LVCMOS/LVTTL compatible inputs
19.44 MHz on-chip oscillator to be used with external crystal
Loss of lock indicator
Loopback mode for high speed test data
Output squelch and bypass features
Single-supply operation: 3.3 V
Low power: 540 mW typical
7 mm × 7 mm, 48-lead LFCSP
APPLICATIONS
SONET OC-48, SDH STM-16, and 15/14 FEC
WDM transponders
Regenerators/repeaters
Test equipment
Backplane applications
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable.
However, no responsibility is assumed by Analog Devices for its use, nor for any
infringements of patents or other rights of third parties that may result from its use.
Specifications subject to change without notice. No license is granted by implication
or otherwise under any patent or patent rights of Analog Devices. Trademarks and
registered trademarks are the property of their respective owners.
tolerance
1.9 GHz minimum bandwidth
Patented clock recovery architecture
15/14 (7%) wrapper rate
REFCLK
(LVPECL/LVDS only at 155.52 MHz)
VREF
NIN
PIN
THRADJ
QUANTIZER
SLICEP/N
DETECT
LEVEL
SDOUT
2
ADN2811
DATAOUTP/N
RETIMING
SHIFTER
VCC
PHASE
DATA
2
VEE
PHASE
OC-48/OC-48 FEC Clock and Data Recovery
FUNCTIONAL BLOCK DIAGRAM
DET.
CLKOUTP/N
FILTER
LOOP
2
Figure 1.
CF1
IC with Integrated Limiting Amp
PRODUCT DESCRIPTION
The ADN2811 provides the receiver functions of quantization,
signal level detect, and clock and data recovery at OC-48 and
OC-48 FEC rates. All SONET jitter requirements are met,
including jitter transfer, jitter generation, and jitter tolerance. All
specifications are quoted for −40°C to +85°C ambient
temperature, unless otherwise noted.
The device is intended for WDM system applications and can
be used with either an external reference clock or an on-chip
oscillator with external crystal. Both the 2.48 Gb/s and
2.66 Gb/s digital wrapper rates are supported by the ADN2811,
without any change of reference clock.
This device, together with a PIN diode and a TIA preamplifier,
can implement a highly integrated, low cost, low power, fiber
optic receiver.
The receiver front end signal detect circuit indicates when the
input signal level has fallen below a user-adjustable threshold.
The signal detect circuit has hysteresis to prevent chatter at the
output.
The ADN2811 is available in a compact, 7 mm × 7 mm, 48-lead
chip scale package.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.326.8703
FILTER
LOOP
VCO
CF2
FRACTIONAL
FREQUENCY
DETECTOR
DIVIDER
LOCK
RATE
LOL
© 2004 Analog Devices, Inc. All rights reserved.
XTAL
OSC
/n
2
2
XO1
XO2
REFSEL[0..1]
REFCLKP/N
REFSEL
ADN2811
www.analog.com

Related parts for ADN2811ACPZ-CML

ADN2811ACPZ-CML Summary of contents

Page 1

FEATURES Meets SONET requirements for jitter transfer/generation/ tolerance Quantizer sensitivity typical Adjustable slice level: ±100 mV 1.9 GHz minimum bandwidth Patented clock recovery architecture Loss of signal detect range Single reference clock frequency ...

Page 2

ADN2811 TABLE OF CONTENTS Specifications..................................................................................... 3 Absolute Maximum Ratings............................................................ 5 Thermal Characteristics .............................................................. 5 ESD Caution.................................................................................. 5 Pin Configuration and Functional Descriptions.......................... 6 Definition of Terms .......................................................................... 8 Maximum, Minimum, and Typical Specifications ................... 8 Input Sensitivity and Input Overdrive....................................... ...

Page 3

SPECIFICATIONS Table VCC = V A MIN MAX, MIN Parameter QUANTIZER—DC CHARACTERISTICS Input Voltage Range Peak-to-Peak Differential Input Input Common-Mode Level Differential Input Sensitivity Input Overdrive Input Offset Input rms Noise QUANTIZER—AC CHARACTERISTICS Upper ...

Page 4

ADN2811 Parameter Setup Time Hold Time REFCLK DC INPUT CHARACTERISTICS Input Voltage Range Peak-to-Peak Differential Input Common-Mode Level TEST DATA DC INPUT CHARACTERISTICS Peak-to-Peak Differential Input Voltage LVTTL DC INPUT CHARACTERISTICS Input High Voltage Input Low Voltage Input Current LVTTL ...

Page 5

ABSOLUTE MAXIMUM RATINGS Table 2. Parameter Supply Voltage (VCC) Minimum Input Voltage (All Inputs) Maximum Input Voltage (All Inputs) Maximum Junction Temperature Storage Temperature Lead Temperature (Soldering 10 Sec) Stresses above those listed under Absolute Maximum Ratings may cause permanent ...

Page 6

ADN2811 PIN CONFIGURATION AND FUNCTIONAL DESCRIPTIONS Table 3. Pin Function Descriptions Pin No. Mnemonic Type 1 THRADJ AI 2, 26, 28, Pad VCC 16, 19, 22, 27, VEE P 29, 33, 34, 42, 43 VREF ...

Page 7

CLKOUTP T S DATAOUTP/N Figure 3. Output Timing 18 THRADJ RESISTOR VS. LOS TRIP POINT Figure 4. LOS Comparator Trip Point Programming OUTP V CML OUTN OUTP–OUTN ...

Page 8

ADN2811 DEFINITION OF TERMS MAXIMUM, MINIMUM, AND TYPICAL SPECIFICATIONS Specifications for every parameter are derived from statistical analyses of data taken on multiple devices from multiple wafer lots. Typical specifications are the mean of the distribution of the data for ...

Page 9

LOS RESPONSE TIME The LOS response time is the delay between the removal of the input signal and the indication of loss of signal (LOS) at SDOUT. The LOS response time of the ADN2811 is 300 ns typ when the ...

Page 10

ADN2811 THEORY OF OPERATION The ADN2811 is a delay-locked and phase-locked loop circuit for clock recovery and data retiming from an NRZ encoded data stream. The phase of the input data signal is tracked by two separate feedback loops that ...

Page 11

The gain of the loop integrator is small for high jitter frequencies, so larger phase differences are needed to make the loop control voltage big enough to tune the range of the phase shifter. Large phase errors at high jitter ...

Page 12

ADN2811 FUNCTIONAL DESCRIPTION CLOCK AND DATA RECOVERY The ADN2811 recovers clock and data from serial bit streams at OC-48 as well as the 15/14 FEC rates. The data rate is selected by the RATE input (see Table 4). Table 4. ...

Page 13

The ADN2811 can accept any of the following reference clock frequencies: 19.44 MHz, 38.88 MHz, 77.76 MHz at LVTTL/ LVCMOS/LVPECL/LVDS levels, or 155.52 MHz at LVPECL/ LVDS levels via the REFCLKN/P inputs, independent of data rate. The input buffer accepts ...

Page 14

ADN2811 ADN2811 PIN NIN 50Ω VREF SQUELCH MODE When the squelch input is driven to a TTL high state, both the clock and data outputs are set to the zero state to suppress downstream processing. If desired, this pin can ...

Page 15

APPLICATIONS INFORMATION PCB DESIGN GUIDELINES Proper RF PCB design techniques must be used for optimal performance. Power Supply Connections and Ground Planes Use of one low impedance ground plane to both analog and digital grounds is recommended. The VEE pins ...

Page 16

ADN2811 VCC 10µF VCC 0.1µF 50Ω TIA C 50Ω IN VCC µC 19.44MHz VCC VCC 100Ω 100Ω 100Ω 100Ω 0.1µ F 0.1µ F ADN2811 Figure 20. AC-Coupled Output Configuration 4 × 100Ω µC 0.1µF 1nF ...

Page 17

CHOOSING AC-COUPLING CAPACITORS The choice of ac-coupling capacitors at the input (PIN, NIN) and output (DATAOUTP, DATAOUTN) of the ADN2811 must be chosen carefully. When choosing the capacitors, the time constant formed with the two 50 Ω resistors in the ...

Page 18

ADN2811 DC-COUPLED APPLICATION The inputs to the ADN2811 can also be dc-coupled. This may be necessary in burst mode applications where there are long periods of CIDs and baseline wander cannot be tolerated. If the inputs to the ADN2811 are ...

Page 19

OUTLINE DIMENSIONS PIN 1 INDICATOR 1.00 12° MAX 0.85 0.80 SEATING PLANE ORDERING GUIDE Model Temperature Range ADN2811ACP-CML −40°C to +85°C ADN2811ACP-CML-RL −40°C to +85°C EVAL-ADN2811-CML 7.00 BSC SQ 0.60 MAX 37 36 TOP 6.75 VIEW BSC SQ 0.50 0.40 ...

Page 20

ADN2811 NOTES © 2004 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. C03019–0–5/04(B) Rev Page ...

Related keywords