Shares of Analog Devices ( ADI) were among technology's winners Friday, rising 4% after the chipmaker posted better-than-expected second-quarter earnings and pegged third-quarter revenue above analysts' target. For the quarter ended April 29, the company earned $145.8 million, or 39 cents a share, on revenue of $643.9 million. Excluding items, Analog Devices earned 41 cents a share. Analysts polled by Thomson First Call expected earnings of 40 cents a share on revenue of $644.3 million. During the year-earlier quarter the company earned $117.6 million, or 31 cents a share, on revenue of $603.7 million. "The second quarter was a good quarter for ADI, led by strong growth in sales to our industrial instrumentation, consumer electronics and wireless infrastructure customers," the company said. Looking ahead, Analog Devices sees third-quarter earnings of 38 cents to 39 cents a share, including stock-based compensation costs and other one-time items of 6 cents a share. The company predicts revenue of $675 million to $685 million. Analysts project earnings, excluding stock-based compensation costs, of 43 cents a share on revenue of $664.6 million. Shares were trading up $1.45 to $36.13. Westell Technologies ( WSTL) fell 10% after the telecom-products company posted in-line fourth-quarter results but issued a disappointing first-quarter guidance. In the quarter ended March 31 the company earned $2.5 million, or 4 cents a share, including an income-tax expense of $3.2 million. Without the expense, the company would have earned 8 cents a share, matching analysts' mean estimate. Westell posted revenue of $73.1 million; one analyst had projected a top line of $71.1 million. During the year-earlier period the company earned $28.4 million, or 40 cents a share, on revenue of $78.2 million. The results in the year-earlier quarter included a $20.1 million tax benefit. For the first quarter Westell expects earnings of 2 cents to 3 cents a share, including an income-tax expense of $1.4 million to $2.2 million. Based on the 71.7 million outstanding shares the company had at the end of March, the tax expense would amount to 2 cents to 3 cents a share. The company predicts revenue of $64 million to $67 million. Analysts, on average, expect earnings of 8 cents a share. One analyst predicts revenue of $70.5 million. Shares were down 39 cents to $3.37.