AMT8412
2.5 Gb/s 1310/1550nm PIN-TIA
FEATURES
2.5 Gb/s differential output TIA
DC-1.9 GHz bandwidth
+3.3V Operation
-23dBm Typical sensitivity
1250-1620nm PIN Photodetector
Automatic Gain Control (AGC)
2dBm Optical Overload
APPLICATIONS
SONET OC-48 / SDH STM-16
TO-46 4 pin Ball
Lens Package
TO-46 5 pin Ball
Lens Package
Product Description
The ANADIGICS AMT8412, packaged in a 4 or 5
pin TO-46 lens can, is a 3.3V integrated
photodetector and transimpedance amplifier
(TIA) used to convert a long wavelength (1250 to
1620nm) optical input signal into a differential
output voltage. The AMT8412 has a typical
bandwidth of 1.9GHz and a dynamic range of
over 25dB. The 5 pin package allows separate
biasing and current monitoring of the photodiode.
These devices are readily designed into
receivers, transceivers and transponders for
SONET OC-48 and SDH STM-16 applications.
AGC
OUT
OUTQ
GND
VCC
VPD
(For the 4 pin header VPD and VCC are connected to the same pin)
Figure 1: Functional Block Diagram
AMT8412
Rev 0.1
2
ELECTRICAL CHARACTERISTICS
Table 1: Absolute Maximum Ratings
PARAMETER
MIN
MAX
UNIT
Supply Voltage
-0.5
+3.8
V
Optical Input Power
-
+ 5
dBm
Storage Temperature
- 40
+ 125
oC
Stresses in excess of the absolute ratings may cause permanent damage. Functional
operation is not implied under these conditions. Exposure to absolute ratings for extended
periods of time may adversely affect reliability.
Table 2: Electrical Specifications
PARAMETER
MIN
TYP
MAX
UNIT
Wavelength 1250
-
1620
nm
Detector Active Area
-
70
-
um
Sensitivity
(1)
-23 - dBm
Overload
2
-
dBm
Responsivity 1550nm
0.95
A/W
Responsivity 1310nm
0.85
A/W
Vpd
resistance
240 270 340
Small signal transimpedance gain (50
)
1.8 3.5 5.0 K
Small signal transimpedance gain (
)
3.6 7 10 K
Small signal 3dB bandwidth
1.7
1.9
MHz
Output resistance
40
53
65
Output voltage swing (differential 50
)
90 220 400
mV
P-P
Rise/Fall times 20% / 80%
-
200
-
ps
TIA supply voltage
3.0
3.3
3.6
V
TIA supply current
-
26
38
mA
Power consumption (3.3V)
-
86
134
mW
Operating temperature -40
25
+85
oC
2.5Gb/s PRBS 2
31
-1, 1550nm, ER >12dB, BER 10
-10
Figure 2: Pin location (4-pin)
OUTQ
OUT
VCC
GND
(Bottom View)
Figure 3: Pin location (5-pin)
VCC
OUTQ
GND
OUT
VPD
(Bottom View)
Table 3: Pin description
NAME
DESCRIPTION
OUT
TIA Output (Non-Inverted)
VCC
Supply Voltage (+3.3V)
OUTQ
TIA Output (Inverted)
GND Ground
AMT8412
Rev 0.1
3
PACKAGE DIMENSIONS 4 Pin TO-46
AMT8412
Rev 0.1
4
PACKAGE DIMENSIONS
ORDERING INFORMATION
Part Number
PACKAGE DESCRIPTION
AMT8412T46L4
4 pin TO-46 Lens Package
AMT8412T46L5
5 pin TO-46 Lens Package
ANADIGICS, Inc.
829 Flynn Road
Camarillo, California 93012, U.S.A.
Tel: +1 (805) 445-4500
Fax: +1 (805) 445-4502
URL:
http://www.anadigics.com
E-mail: Mktg@anadigics.com
IMPORTANT NOTICE
ANADIGICS, Inc. reserves the right to make changes to its products or discontinue any product at any
time without notice. The product specifications contained in Advanced Product Information sheets and
Preliminary Data sheets are subject to change prior to a product's formal introduction. Information in
Data Sheets have been carefully checked and are assumed to be reliable; however, ANADIGICS
assumes no responsibility for inaccuracies. ANADIGICS strongly urges customers to verify that the
information they are using is current before placing orders.
WARNING
ANADIGICS products are not intended for use in life support appliances, devices, or systems. Use of
an ANADIGICS product in any such application without written consent is prohibited.
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