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ADN2820 Schematic ( PDF Datasheet ) - Analog Devices

Teilenummer ADN2820
Beschreibung 10.7 Gbps / 3.3V / Low Noise / TIA with Average Power Moniter
Hersteller Analog Devices
Logo Analog Devices Logo 




Gesamt 12 Seiten
ADN2820 Datasheet, Funktion
FEATURES
Technology: high performance SiGe
Bandwidth: 9 GHz
Input noise current density: 1.0 µA
Optical sensitivity: –19.3 dBm
Differential transimpedance: 5000 V/A
Power dissipation: 200 mW
Input current overload: 2.8 mA p-p
Linear input range: 0.15 mA p-p
Output resistance: 50 Ω/side
Output offset adjustment range: 240 mV
Average input power monitor: 1 V/mA
Die size: 0.87 mm × 1.06 mm
APPLICATIONS
10.7 Gbps optical modules
SONET/SDH OC-192/STM-64 and 10 GbE
receivers, transceivers, and transponders
10.7 Gbps, 3.3 V, Low Noise,
TIA with Average Power Monitor
ADN2820
PRODUCT DESCRIPTION
The ADN2820 is a compact, high performance, 3.3 V power
supply SiGe transimpedance amplifier (TIA) optimized for
10 Gbps Metro-Access and Ethernet systems. It is a single chip
solution for detecting photodiode current with a differential
output voltage. The ADN2820 features low input referred noise
current and high output transimpedance gain, capable of
driving a typical CDR or transceiver directly. A POWMON
output is provided for input average power monitoring and
alarm generation. Low nominal output offset enables dc output
coupling to 3.3 V circuits. The OFFSET control input enables
output slice level adjustment for asymmetric input signals. The
ADN2820 operates with a 3.3 V power supply and is available in
die form.
FUNCTIONAL BLOCK DIAGRAM
3.3V
VCC (1,2,3)
RF
RF = 500
50
50
hυ
IN (13)'
CB
CF
0.85V
AV = 20dB
20mA
OUT (5)
OUTB (6)
OFFSET (14)
POWMON (8)
GND (10, 11)
GND (4,7)
CLF (9)
CLF
Figure 1. Functional Block Diagram/Typical Operating Circuit
03194-0-001
Rev. 0
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.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.326.8703 © 2003 Analog Devices, Inc. All rights reserved.






ADN2820 Datasheet, Funktion
ADN2820
TYPICAL PERFORMANCE CHARACTERISTICS
0.25
0.20
0.15
0.10
0.05
0
–0.05
–0.10
–0.15
–0.20
–0.25
0
0.3 0.6 0.9 1.2 1.5 1.8 2.1 2.4 2.7 3.0 3.3
OFFSET CONTROL INPUT (V)
Figure 3. VOUT Differential vs. OFFSET Adjust
10
1
0.1
0.001
1
10 100
1k
IIN (µA)
Figure 4. VPOWMON vs. IIN
10k
CH1 S21 LOG 5dB/REF 0dB
2:11.571dB 8.156 326 057GHz
CH1 MARKERS
1:14.563 dB
100.000 MHz
1
2
START .050 000 000GHz
STOP 20.000 000 000GHz
Figure 5. ADN2820 S21
–10
–15
–20
–25
–30
–35
–40
–45
–50
0.01
0.1
FREQUENCY (GHz)
Figure 6. Differential S22 vs. Frequency
1
1200
1000
800
600
400
200
0
0
0.5 1.0 1.5 2.0 2.5
INPUT CURRENT (mA p-p)
Figure 7. Output Voltage vs. Input Current
3.0
80
75
70
65
60
55
50
0
0.5 1.0 1.5 2.0 2.5
INPUT CURRENT (mA p-p)
3.0
Figure 8. Transimpedance Gain vs. Input Current
Rev. 0 | Page 6 of 12

6 Page









ADN2820 pdf, datenblatt
ADN2820
OUTLINE DIMENSIONS
1 23
14 4
13 ADN2820
5
SINGLE PAD SIZE: 0.080 mm x 0.080 mm
(pads 1, 2, 3, 5, 6, 8, 9, 12, 13, 14)
12
DOUBLE PAD SIZE: 0.120 mm x 0.080 mm
(pads 4, 7, 10, 11)
6
11 7
1.060 mm
10 9
8
0.875 mm
0.30 mm
Figure 20. 14-Pad Bare Die
Dimensions shown in millimeters
ORDERING GUIDE
Model
ADN2820ACHIPS
Temperature Range
–25°C to +85°C
Package Description
Die Form
© 2003 Analog Devices, Inc. All rights reserved. Trademarks and
registered trademarks are the property of their respective owners.
C03194–0–10/03(0)
Rev. 0 | Page 12 of 12

12 Page





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