The following specifications apply for VDD = 3.0 VDC to 3.6 VDC, and all analog source impedance RS = 50Ω unless otherwise specified in the conditions. Boldface limits apply for TA = TMIN to TMAX; all other limits TA= +25°C.Symbol | Parameter | Conditions | Typical (1) | Limits (2) | Units (Limit) |
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TACHOMETER ACCURACY |
| Fan Control Accuracy | | | ±10 | % (max) |
| Fan Full-Scale Count | | | 65535 | (max) |
| Fan Counter Clock Frequency | | 90 | | kHz |
| Fan Count Update Frequency | | 1.0 | | Hz |
FAN PWM OUTPUT |
| Frequency Accuracy | | | ±10 | % (max) |
(1) “Typicals” are at TA = 25°C and represent most likely parametric norm. They are to be used as general reference values not for critical design calculations.
(2) Limits are guaranteed to TI's AOQL (Average Outgoing Quality Level).