AD807A-155BRZ Analog Devices Inc, AD807A-155BRZ Datasheet

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AD807A-155BRZ

Manufacturer Part Number
AD807A-155BRZ
Description
IC,ATM/SONET Receiver,BIPOLAR,SOP,16PIN,PLASTIC
Manufacturer
Analog Devices Inc
Type
Receiverr
Datasheet

Specifications of AD807A-155BRZ

Number Of Drivers/receivers
0/1
Protocol
SDHj Sonet
Voltage - Supply
4.5 V ~ 5.5 V
Mounting Type
Surface Mount
Package / Case
16-SOIC (3.9mm Width)
Lead Free Status / RoHS Status
Lead free / RoHS Compliant

Available stocks

Company
Part Number
Manufacturer
Quantity
Price
Part Number:
AD807A-155BRZ
Manufacturer:
ADI/亚德诺
Quantity:
20 000
Part Number:
AD807A-155BRZRL
Manufacturer:
ADI/亚德诺
Quantity:
20 000
a
PRODUCT DESCRIPTION
The AD807 provides the receiver functions of data quantization,
signal level detect, clock recovery and data retiming for 155 Mbps
NRZ data. The device, together with a PIN diode/preamplifier
combination, can be used for a highly integrated, low cost, low
power SONET OC-3 or SDH STM-1 fiber optic receiver.
The receiver front end signal level detect circuit indicates when
the input signal level has fallen below a user adjustable thresh-
old. The threshold is set with a single external resistor. The
signal level detect circuit 3 dB optical hysteresis prevents chatter
at the signal level detect output.
The PLL has a factory-trimmed VCO center frequency and a
frequency acquisition control loop that combine to guarantee
frequency acquisition without false lock. This eliminates a
THRADJ
NIN
PIN
COMPARATOR/
DETECT
BUFFER
LEVEL
QUANTIZER
DETECTOR
SIGNAL
LEVEL
FUNCTIONAL BLOCK DIAGRAM
+
+
Fiber Optic Receiver with Quantizer and
SDOUT
F
AD807
DET
DET
Clock Recovery and Data Retiming
PHASE-LOCKED LOOP
COMPENSATING
reliance on external components such as a crystal or a SAW
filter, to aid frequency acquisition.
The AD807 acquires frequency and phase lock on input data
using two control loops that work without requiring external
control. The frequency acquisition control loop initially acquires
the frequency of the input data, acquiring frequency lock on
random or scrambled data without the need for a preamble. At
frequency lock, the frequency error is zero and the frequency
detector has no further effect. The phase acquisition control
loop then works to ensure that the output phase tracks the input
phase. A patented phase detector has virtually eliminated pattern
jitter throughout the AD807.
The device VCO uses a ring oscillator architecture and patented
low noise design techniques. Jitter is 2.0 degrees rms. This low
jitter results from using a fully differential signal architecture,
Power Supply Rejection Ratio circuitry and a dielectrically
isolated process that provides immunity from extraneous signals
on the IC. The device can withstand hundreds of millivolts of
power supply noise without an effect on jitter performance.
The user sets the jitter peaking and acquisition time of the PLL
by choosing a damping factor capacitor whose value determines
loop damping. CCITT G.958 Type A jitter transfer require-
ments can easily be met with a damping factor of 5 or greater.
Device design guarantees that the clock output frequency will
drift by less than 20% in the absence of input data transitions.
Shorting the damping factor capacitor, C
output frequency to the VCO center frequency.
The AD807 consumes 170 mW and operates from a single
power supply at either +5 V or –5.2 V.
ZERO
RETIMING
DEVICE
CF1 CF2
FILTER
LOOP
VCO
CLKOUTP
CLKOUTN
DATAOUTP
DATAOUTN
D
, brings the clock
AD807

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AD807A-155BRZ Summary of contents

Page 1

PRODUCT DESCRIPTION The AD807 provides the receiver functions of data quantization, signal level detect, clock recovery and data retiming for 155 Mbps NRZ data. The device, together with a PIN diode/preamplifier combination, can be used for a highly integrated, ...

Page 2

AD807–SPECIFICATIONS Parameter QUANTIZER–DC CHARACTERISTICS Input Voltage Range Input Sensitivity, V SENSE Input Overdrive Input Offset Voltage Input Current Input RMS Noise Input Peak-to-Peak Noise QUANTIZER–AC CHARACTERISTICS Upper –3 dB Bandwidth Input Resistance Input Capacitance Pulsewidth Distortion LEVEL DETECT ...

Page 3

... Temperature Range AD807A-155BR – +85 C AD807A-155BRRL7 – +85 C AD807A-155BRRL – +85 C CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection. Although the AD807 features proprietary ESD protection circuitry, permanent damage may occur on devices subjected to high-energy electrostatic discharges ...

Page 4

AD807 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 5

Bandwidth This describes the frequency at which the AD807 attenuates sinusoidal input jitter by 3 dB. Peaking This describes the maximum jitter gain of the AD807 in dB. Damping Factor, Damping factor, describes the compensation of the second order PLL. ...

Page 6

AD807 –Typical Performance Characteristics 200.0E+3 180.0E+3 160.0E+3 140.0E+3 120.0E+3 100.0E+3 80.0E+3 60.0E+3 40.0E+3 20.0E+3 0.0E+0 0.0 5.0 10.0 15.0 20.0 SIGNAL DETECT LEVEL – mV 35.0E– THRESH 30.0E–3 25.0E–3 20.0E–3 15.0E–3 10.0E– 49.9k THRESH 5.0E–3 ...

Page 7

TEST CONDITIONS WORST-CASE: – 1.4 1.5 1.6 1.7 1.8 1.9 RMS JITTER – Degrees 1E+3 100E+0 10E+0 AD807 1E+0 SONET MASK 100E–3 10E+0 100E+0 1E+3 10E+3 FREQUENCY – Hz 3.0 PSR ...

Page 8

AD807 THRESHOLD AD807 PIN COMPARATOR STAGES AND CLOCK RECOVERY NIN PLL ITHR POSITIVE LEVEL- PEAK DETECTOR NEGATIVE LEVEL- PEAK DETECTOR Phase-Locked Loop The phase-locked loop recovers clock and retimes data from NRZ data. The architecture uses a frequency detector to ...

Page 9

C1 0 100 100 R9 J1 154 C3 0 100 DATAOUTN R6 100 DATAOUTP 100 CLKOUTN R8 100 CLKOUTP C6 0 100 ...

Page 10

AD807 C1 0 100 100 J1 C2 0.1 F DATAOUTN DATAOUTP C3 0 0.1 F CLKOUTN CLKOUTP 100 100 C2 0.1 F NOTES: 1. ALL CAPACITORS ARE ...

Page 11

C1 0 100 100 R9 154 C2 0 100 J1 R6 100 100 C7 0 100 0.1 ...

Page 12

AD807 USING THE AD807 Ground Planes Use of one ground plane for connections to both analog and digital grounds is recommended. Power Supply Connections Use capacitor between V and ground is recom- CC mended. Care should ...

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