View SE1230Q_45120.PDF datasheet online --- IC-ON-LINE

Datasheet File OCR Text:

SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Applications
SONET/SDH-based transmission systems, test equipment and modules OC-48 fibre optic modules Gigabit Ethernet Fibre Channel Wideband RF gain block
Product Description
SiGe Semiconductor offers a portfolio of optical networking ICs for use in high-performance optical transmitter and receiver functions, from 155 Mb/s up to 12.5 Gb/s. SiGe Semiconductor's SE1230 is a fully integrated AGC amplifier aimed primarily at SONET OC-48 and SDH STM-16 systems. The device may also be used in any datacom application with input data rates up to 2.5 Gb/s. The device is designed with differential I/Os and signal levels compatible with SiGe Semiconductor's SE1030 and SE1031 transimpedance amplifiers. A system block diagram is shown after the functional description, on page 4. Optimum performance is provided by differential connections but with appropriate terminations, the device can also be used in single-ended mode if required by the application.
Features
Single +3.3 V supply Power dissipation = 230 mW (typ) Noise figure < 12 dB Small signal gain = 23.5 dB differential Fully integrated AGC function On-chip 50 input and output terminations Wide bandwidth (-3 dB) > 2.0 GHz Maximum input level of 200 mVpk AGC output level of 370 mVpk differential Loss of signal functionality Single-ended or differential operation Minimal external components Operating ambient temperature range = -40C to +85C Equivalent to Nortel Networks AC10
Ordering Information
Type SE1230Q Package 5 mm, 32 pin LQFP Remark None
Functional Block Diagram
INP INN
Variable Gain
Output Buffer
OUTP OUTN
SE1230 AGC Amp 2.5 Gb/s
OUTP OUTN Integrator
Rectifier
LOS
Rectifier/ Comparator
Vref2 LOS_INIT
Bandgap Ref
Vref1
AGC_ADJ
49-DST-01
Rev 1.4
Apr 29/02
1 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Pin Out Diagram
AGC_ADJ
27
DNC
DNC
DNC
VCC
VCC
26
32 31
VCC
30
29
28
GND GND INP GND INN GND VCC VCC
25
VCC
1 2 3 4 5 6 7 8
24 23 22
GND GND OUTP GND OUTN GND VCC VCC
Top View
21 20 19 18 17
10
11
12
13
14
GND
GND
GND
15
9
Pin Out Description
Pin No. 1 2 3 4 5 6 7 8 9 10 11 12 13 14 Name GND GND INP GND INN GND VCC VCC GND GND LOS VCC VCC LOS_INIT Negative supply (0 V) Negative supply (0 V) Non-inverting input (50 impedance) Negative supply (0 V) Inverting input (50 impedance) Negative supply (0 V) Positive supply (3.3 V) Positive supply (3.3 V) Negative supply (0 V) Negative supply (0 V) Loss of signal output (open collector) Positive supply (3.3 V) Positive supply (3.3 V) Sets initial state of LOS output Description
49-DST-01
Rev 1.4
Apr 29/02
LOS_INIT
GND
LOS
VCC
VCC
16
2 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final
Pin No. 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Name GND GND VCC VCC GND OUTN GND OUTP GND GND VCC VCC AGC_ADJ DNC DNC DNC VCC VCC Negative supply (0 V) Negative supply (0 V) Positive supply (3.3 V) Positive supply (3.3 V) Negative supply (0 V) Inverted output (50 impedance) Negative supply (0 V)
Description
Non-inverted output (50 impedance) Negative supply (0 V) Negative supply (0 V) Positive supply (3.3 V) Positive supply (3.3 V) AGC output level adjust Do not connect Do not connect Do not connect Positive supply (3.3 V) Positive supply (3.3 V)
49-DST-01
Rev 1.4
Apr 29/02
3 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Functional Description
The SE1230 is configured as a variable gain amplifier, with automatic gain control. It comprises a variablegain block driving a 50 output driver (see the functional block diagram on page 1). The device requires a single +3.3 V power supply.
Automatic Gain Control (AGC)
A rectifier compares the output signal voltage with a reference level to invoke gain control. When operating in the controlled gain region, the fully integrated long time-constant integrator provides filtered control voltages to the variable gain stages to maintain a fixed output level. This output level may be varied by injecting current into AGC_ADJ (leave unconnected if adjustment is not required).
System Inputs
The inputs INP and INN are differential and are each internally terminated to 50 . To avoid problems with offset or common-mode voltage, use AC-coupling for differential or single-ended connection (for the latter, AC-couple the unused input to ground via 50 ). The maximum input level is 200 mVpk, applied singleended or differentially.
Loss of Signal
A two-level comparator block is used to detect the input signal level. If it drops below the lower threshold, LOS goes low. This output is an open collector to allow wired-OR connection to other system alarm signals; it requires an external pull-up resistor. It goes high only when the input level exceeds the upper comparator threshold level. If this function is not required, LOS may be left unconnected. By connecting an external series-RC to the LOS_INIT pin, LOS can be forced low on first power up if the signal level is between the upper and lower comparator thresholds. If this function is not required, leave LOS_INIT unconnected.
System Outputs
The outputs OUTP and OUTN are differential and are each internally terminated to 50 . To avoid problems with offset or common-mode voltage, use AC-coupling for differential or single-ended connection (for the latter, AC-couple the unused output to ground via 50 ). The default output level (under AGC) is 370 mVpk differential.
System Block Diagram
Receiver Module 2.5 GHz 2 Clock Clock & Data Recovery Data 2
2.5 Gb/s
2
SE1230Q
AGC Amplifier
2
SE1030/31 TZ Amplifier
PIN
49-DST-01
Rev 1.4
Apr 29/02
4 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Absolute Maximum Ratings
These are stress ratings only. Exposure to stresses beyond these maximum ratings may cause permanent damage to, or affect the reliability of the device. Avoid operating the device outside the recommended operating conditions defined below. Symbol VCC VIO IIO IIO VESD Tstg Supply Voltage Voltage at any input or output Current sourced into any input or output, except OUTP and OUTN Current sourced into pins OUTP and OUTN Electrostatic Discharge (100 pF, 1.5 k), all pins Storage Temperature Parameter Min -0.5 -0.5 -20 -40 -2 -65 Max 5.0 VCC+0.5 20 40 2 150 Unit V V mA mA kV C
Recommended Operating Conditions
Symbol VCC ILOS RLOSI CLOSI IAGC_ADJ Ta Supply Voltage LOS Output Load Current LOS_INIT Resistor LOS_INIT Capacitor (increase value for slow power supply rise time) AGC Threshold Adjust Input Current (on AGC_ADJ pin) - note 1 Operating Ambient Temperature 0 -40 1 1 150 85 Parameter Min 3.1 Typ 3.3 Max 3.5 5 Unit V mA k F A C
Note 1: This current can be produced by connecting a suitable resistor between VCC and AGC_ADJ.
DC Electrical Characteristics
Symbol ICC PD VAGC_ADJ VLOS RT Supply current Power Dissipation Open-circuit AGC_ADJ Voltage Output Low Voltage on LOS, with ILOS = 1 mA Input/Output Termination Resistance 50 Parameter Min Typ 70 230 0.37 0.4 Max 100 350 Unit mA mW V V
49-DST-01
Rev 1.4
Apr 29/02
5 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final AC Electrical Characteristics
Symbol BW (3dB) Gain Parameter Small Signal Bandwidth at -3dB point Small Signal Gain (f = 100 MHz), differential input / output Maximum Input Signal Level Vin Input Signal Level at AGC Threshold 0 A) - note 2 Lower LOS Threshold (LOS = low) Upper LOS Threshold (LOS = high) Output AGC Signal Level (IAGC_ADJ = 0 A) - note 3 Vout S11 S22 NF t R / tF Output AGC Signal Level (IAGC_ADJ = 150 A) - note 3 Input Reflection Coefficient (< 1.3 GHz) Output Reflection Coefficient (< 1.3 GHz) Noise Figure (diff. in / diff. out) Output Rise / Fall Time (Input rise / fall time = 20 ps) 120 250 80 (IAGC_ADJ = 5 25 8 12 370 170 18 500 300 -10 -10 12 mV pk (differential) dB dB dB ps Min 2.0 21 23.5 26 200 mV pk (differential) Typ Max Unit GHz dB
Note 2: Vin at AGC threshold is calculated by dividing Vout by the small signal gain. Note 3: Measured at Vin = 100 mV pk , f = 100 MHz. For intermediate values of IAGC_ADJ the output amplitude can be estimated by linear interpolation. DC and AC electrical characteristics are specified over the recommended operating conditions, and with load resistor (RL) of 50 , AC coupled via 100 nF, for each output. All characteristics are specified for differential signals on inputs and outputs.
49-DST-01
Rev 1.4
Apr 29/02
6 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Package Information
The device is packaged in a 5 mm, 32 pin plastic low profile quad flat pack (LQFP). Package Outline
Package Dimensions Dimension Lead Count Lead Pitch (E) Body Size (D1) Component Tip-to-Tip (D) Component Height (A) Component Standoff Body Thickness (A2) Lead width (plated) (B) Lead Thickness (plated) (C) 0.05 1.35 0.17 0.09 1.40 0.22 Min (mm) Nom (mm) 32 0.5 5.00 7.00 1.60 0.15 1.45 0.27 0.175 Max (mm)
49-DST-01
Rev 1.4
Apr 29/02
7 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final Applications Information
For optimum performance it is recommended that the device be used in differential mode with the circuit shown in the diagram below. Components connected to LOS, LOS_INIT and AGC_ADJ are optional, depending on whether or not the loss of signal and/or AGC adjust functions are required.
+3.3 V 10 k To system alarm circuits LOS 100 nF OUTP CDR, 50 inputs OUTN GND LOS_INIT RLOSI 1 k CLOSI 1 F 100 nF
100 nF INP TZ Amp, 50 outputs INN 100 nF
VCC
AGC Amp SE1230Q
AGC_ADJ
IAGC_ADJ
0V
49-DST-01
Rev 1.4
Apr 29/02
8 of 9
SE1230Q
LightChargerTM 2.5 Gb/s Automatic Gain Control Amplifier Final
http://www.sige.com Headquarters: Canada
Phone: +1 613 820 9244 Fax: +1 613 820 4933
2680 Queensview Drive Ottawa ON K2B 8J9 Canada sales@sige.com
San Diego Phone: +1 858 668 3541 Fax: +1 858 668 3546 Hong Kong Phone: +1 852 9177 1917
United Kingdom South Building, Walden Court Parsonage Lane, Bishop's Stortford Hertfordshire CM23 5DB Phone: +44 1279 464 200 Fax: +44 1279 464 201
Product Preview The datasheet contains information from the product concept specification. SiGe Semiconductor Inc. reserves the right to change information at any time without notification. Preliminary Information The datasheet contains information from the design target specification. SiGe Semiconductor Inc. reserves the right to change information at any time without notification. Final The datasheet contains information from the final product specification. SiGe Semiconductor Inc. reserves the right to change information at any time without notification. Production testing may not include testing of all parameters. Information furnished is believed to be accurate and reliable and is provided on an "as is" basis. SiGe Semiconductor Inc. assumes no responsibility or liability for the direct or indirect consequences of use of such information nor for any infringement of patents or other rights of third parties, which may result from its use. No license or indemnity is granted by implication or otherwise under any patent or other intellectual property rights of SiGe Semiconductor Inc. or third parties. Specifications mentioned in this publication are subject to change without notice. This publication supersedes and replaces all information previously supplied. SiGe Semiconductor Inc. products are NOT authorized for use in implantation or life support applications or systems without express written approval from SiGe Semiconductor Inc. RangerCharger , StreamCharger , PointCharger , and LightCharger Copyright 2002 SiGe Semiconductor All Rights Reserved
TM TM TM TM
are trademarks owned by SiGe Semiconductor Inc.
49-DST-01
Rev 1.4
Apr 29/02
9 of 9

▲Up To Search▲

Price & Availability of SE1230Q

	To Download SE1230Q Datasheet File
If you can't view the Datasheet, Please click here to try to view without PDF Reader .