(China (Mainland))
Product Summary
The STEL-2040B is a Convolutional Encoder Viterbi Decoder. It is used to provide forward error correction (FEC) which improves digital communication performance over a noisy link. In satellite communication systems where transmitter power is limited, FEC techniques can reduce the required transmission power. The STEL-2040B is a specialized product designed to perform this specific communications related function. The STEL-2040B incorporates all the memories required to perform these functions.
Parametrics
STEL-2040B absolute maximum ratings: (1)Tstg Storage Temperature: –40 to +125 ℃; (2)VDDmax Supply voltage on VDD: –0.3 to + 7 volts; (3)VI(max) Input voltage: –0.3 to VDD+0.3 volts; (4)Ii DC input current: ± 10 mA.
Features
STEL-2040B features: (1)Constraint Length 7; (2)Built in BER Monitor; (3)Programmable Scrambler: V.35 (CCITT or IESS); (4)Differential Encoder and Decoder; (5)Three Bit Soft Decision Inputs in Signed Magnitude or 2’s Complement Formats; (6)Up to 256 Kbps Data Rate (0 to 70℃); (7)Industry Standard Polynomials G1=1718, G2=1338, G3=1458,; (8)Microprocessor Interface; (9)Low Power Consumption; (10)68-pin PLCC and CLDCC Packages; (11)Commercial and Military Temperature Ranges Available.
Diagrams
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