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Summary of Contents for Semtech GS3440
- Page 1 GS3440 EB-GS3440 Evaluation Board User Guide www.semtech.com EB-GS3440 1 of 10 Evaluation Board User Guide 57964 - 0 June 2012...
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Page 2: Table Of Contents
1.5 Potentiometer Settings ........................6 1.5.1 OP_CTL Potentiometer Settings..................6 1.5.2 Squelch Adjust (SQ_ADJ) Potentiometer Settings .............6 1.6 LED Indicator .............................6 2. Schematic.................................7 3. Board Layout..............................8 4. Bill of Materials...............................9 EB-GS3440 2 of 10 Evaluation Board User Guide 57964 - 0 June 2012... - Page 3 General Description The GS3440 evaluation package is designed to accelerate the evaluation process of the GS3440 Adaptive Cable Equalizer. It is strongly recommended to read the GS3440 Data Sheet (Doc ID: 56482) before using this evaluation kit. Evaluation Kit Contents •...
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Page 4: Evaluation Board User Guide
1.1 SDI Inputs and Outputs The GS3440 is a high-speed BiCMOS integrated circuit designed to equalize and restore signals received over 75Ω co-axial cables. The EB-GS3440 is the evaluation board for the GS3440. The EB-GS3440 features one 75Ω single-ended input through a BNC connector (SDI/J1), and one pairs of 100Ω... -
Page 5: Switch Settings
1.3 Switch Settings A two-point dip switch (SW1) provides the GS3440’s input selection. The switch positions are marked on the silkscreen, and are described in Table 1-1 below: Table 1-1: SW1 Settings Switch Label Switch OFF Description Switch ON Description... -
Page 6: Potentiometer Settings
GS3440 Data Sheet for more details on carrier detect and squelch adjust. 1.6 LED Indicator D1 is the Carrier Detect LED for the GS3440. D1 is on when no carrier is detected and stays off otherwise. There is one LED_EN jumper which when disconnected, it disables the LED. -
Page 7: Schematic
75Ω 1μF GS3440 4.7μF SQ_ADJ VCC_A_94 OP_CTL GAIN_SEL LED DISABLE JUMPER VCC_A_94 VCC_A_94 CDB_94 SLEEP WHITE WHITE 14kΩ AUTO-SLEEP MMBT3904 VCC_DIG_94 BYPASS_94 SWDIP2 Figure 2-1: GS3440 Schematic EB-GS3440 7 of 10 Evaluation Board User Guide 57964 - 0 June 2012... -
Page 8: Board Layout
3. Board Layout Figure 3-1: Layer 1 (Top Layer) and Top Silkscreen Figure 3-2: Layer 2 (Ground) Figure 3-3: Layer 3 (Power) Figure 3-4: Layer 4 (Bottom) EB-GS3440 8 of 10 Evaluation Board User Guide 57964 - 0 June 2012... -
Page 9: Bill Of Materials
TP1, TP2 Test Point, PC multi-purpose (white) Test Point, PC multi-purpose (yellow) Test Point, PC multi-purpose (red) Test Point, PC multi-purpose (black) Gennum GS3440 3Gb/s Adaptive Cable Equalizer, QFN16-4X4X1MM-0P65MM EB-GS3440 9 of 10 Evaluation Board User Guide 57964 - 0... -
Page 10: Evaluation Board User Guide 57964 - 0 June
PRODUCTS IN SUCH APPLICATIONS IS UNDERSTOOD TO BE UNDERTAKEN SOLELY AT THE CUSTOMER’S OWN RISK. Should a customer purchase or use Semtech products for any such unauthorized application, the customer shall indemnify and hold Semtech and its officers, employees, subsidiaries, affiliates, and distributors harmless against all claims, costs damages and attorney fees which could arise.
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