The STM LPR410AL chip is the "best" analog gyro chip in my opinion. "Best" means a reasonable balance of these key criteria: price, operating voltage & current, noise, and other. Essentially, there are only two producers of analog gyros in-stock at digikey - Analog Devices Inc. (ADI) and ST Microelectronics (STM). This table compares two comparable range chips vs. key criteria:
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Criteria ADI STM Winner
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Model ADXR623 LPR410AL
Price per 1000 $27.24 $3.57 STM
Supply voltage 5.0 V 3.0 V draw
Supply current 3.5 mA 6.8 mA ADI
Range (deg/sec) 150 100 & 400 STM
Noise 0.040 0.014 STM
Frequency Range 3000 hz 140 hz ADI
No. of Axii 1 2 STM
STM LPR410AL clearly beats the ADXR623 on price (ADX higher by factor of 7.6!), number of axii, noise, and range. For each axis, the STM chip provides two ranges (100 & 400 deg/sec) that should apply widely to most diy projects in my opinion. The only minor drawback to STM is supply current, but that is manageable.
Adafruit.com and Pololu.com are my main goto suppliers, so I brought up this issue at Pololu too:http://forum.pololu.com/viewtopic.php?f=14&t=7091
The Pololu president wrote that STM has "... newer (L3G...) analog parts coming out ...", but they are in the "evaluation" stage, and their range may be too high (625 deg/sec) for most diy projects.